mirror of https://gitee.com/openkylin/linux.git
114125 Commits
Author | SHA1 | Message | Date |
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Linus Torvalds | cf4f493b10 |
A few more tracing fixes:
- Fixed a buffer overflow by checking nr_args correctly in probes - Fixed a warning that is reported by clang - Fixed a possible memory leak in error path of filter processing - Fixed the selftest that checks for failures, but wasn't failing - Minor clean up on call site output of a memory trace event -----BEGIN PGP SIGNATURE----- iIoEABYIADIWIQRRSw7ePDh/lE+zeZMp5XQQmuv6qgUCXZEP5hQccm9zdGVkdEBn b29kbWlzLm9yZwAKCRAp5XQQmuv6qhrSAQDlws8rY/vJN4tKL1YaBTRyS5OW+1B+ LPLOxm9PBuzt0wEArVunv7iMgvRzp5spbmCqmD8Is2vSf+45KSrb10WU2wo= =L37R -----END PGP SIGNATURE----- Merge tag 'trace-v5.4-3' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace Pull tracing fixes from Steven Rostedt: "A few more tracing fixes: - Fix a buffer overflow by checking nr_args correctly in probes - Fix a warning that is reported by clang - Fix a possible memory leak in error path of filter processing - Fix the selftest that checks for failures, but wasn't failing - Minor clean up on call site output of a memory trace event" * tag 'trace-v5.4-3' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace: selftests/ftrace: Fix same probe error test mm, tracing: Print symbol name for call_site in trace events tracing: Have error path in predicate_parse() free its allocated memory tracing: Fix clang -Wint-in-bool-context warnings in IF_ASSIGN macro tracing/probe: Fix to check the difference of nr_args before adding probe |
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Linus Torvalds | a3c0e7b1fe |
libnvdimm fixes v5.4-rc1
- Complete the reworks to interoperate with powerpc dynamic huge page sizes - Fix a crash due to missed accounting for the powerpc 'struct page'-memmap mapping granularity. - Fix badblock initialization for volatile (DRAM emulated) pmem ranges. - Stop triggering request_key() notifications to userspace when NVDIMM-security is disabled / not present. - Miscellaneous small fixups. -----BEGIN PGP SIGNATURE----- iQIcBAABAgAGBQJdkAprAAoJEB7SkWpmfYgCjXoQAIwJE1VzNP1V+ARxfs1rTGVz pbNJiBnj4gxDaCkcKoatiadRkytUxeUNEcPslEKsfoNinXYqkpjMQoWm2VpILOMU nY+SvIudGRnuesq2/Y+CP8zrX6rV4eBDfHK05RN/Zp1IlW7pTDItUx8mJ7glmDwG PW0vkvK7yZ+dRFnpQ7QFjhA0Q3oudO5YcTVBDK5YYtDGlv69xfXqc9LW8SszJ1kU rhCIT1kdoL5of0TIgG5pTfmggPSQ9y1xPsKjllOHNa3m50eGOkkQLELOVzQb1frW cjAsPLjRDSzvdHHSLyu0Is04Q5JU2CucxHl2SXGHiOt5tigH8dk5XFxWt0Pc8EXx acYYiBqUXC3MomSYWeLK4BdO2cRTqcPPXgJYAqXblqr+/0ys+rFepjw+j8JkiLZa 5UCC30l1GXEpw9u6gdCMqvvHN2gHvDB0BV82Sx8wTewJpeL18wCUJoKVuFmpsHko p1cCe7St1TzcK3eO+xfeW1rxNrcXUpKVYXVa/WOJW0vwErqAZ6YCdNuyJHocZzXn vNyIQmVDOlubsgBAI2ExxeZO6xc8UIwLhLg7XEJ0mg3k6UXA8HZxH2B2THJk1BSF RppodkYiMknh11sqgpGp+Hz5XSEg/jvmCdL/qRDGAwhsFhFaxDH37Kg4Qncj2/dg uDvDHXNCjbGpzCo3tyNx =Z6Fa -----END PGP SIGNATURE----- Merge tag 'libnvdimm-fixes-5.4-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/nvdimm/nvdimm More libnvdimm updates from Dan Williams: - Complete the reworks to interoperate with powerpc dynamic huge page sizes - Fix a crash due to missed accounting for the powerpc 'struct page'-memmap mapping granularity - Fix badblock initialization for volatile (DRAM emulated) pmem ranges - Stop triggering request_key() notifications to userspace when NVDIMM-security is disabled / not present - Miscellaneous small fixups * tag 'libnvdimm-fixes-5.4-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/nvdimm/nvdimm: libnvdimm/region: Enable MAP_SYNC for volatile regions libnvdimm: prevent nvdimm from requesting key when security is disabled libnvdimm/region: Initialize bad block for volatile namespaces libnvdimm/nfit_test: Fix acpi_handle redefinition libnvdimm/altmap: Track namespace boundaries in altmap libnvdimm: Fix endian conversion issues libnvdimm/dax: Pick the right alignment default when creating dax devices powerpc/book3s64: Export has_transparent_hugepage() related functions. |
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Linus Torvalds | 939ca9f175 |
Merge branch 'linus' of git://git.kernel.org/pub/scm/linux/kernel/git/evalenti/linux-soc-thermal
Pull thermal SoC updates from Eduardo Valentin: "This is a really small pull in the midst of a lot of pending patches. We are in the middle of restructuring how we are maintaining the thermal subsystem, as per discussion in our last LPC. For now, I am sending just some changes that were pending in my tree. Looking forward to get a more streamlined process in the next merge window" * 'linus' of git://git.kernel.org/pub/scm/linux/kernel/git/evalenti/linux-soc-thermal: thermal: db8500: Rewrite to be a pure OF sensor thermal: db8500: Use dev helper variable thermal: db8500: Finalize device tree conversion thermal: thermal_mmio: remove some dead code |
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Linus Torvalds | 02dc96ef6c |
Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net
Pull networking fixes from David Miller: 1) Sanity check URB networking device parameters to avoid divide by zero, from Oliver Neukum. 2) Disable global multicast filter in NCSI, otherwise LLDP and IPV6 don't work properly. Longer term this needs a better fix tho. From Vijay Khemka. 3) Small fixes to selftests (use ping when ping6 is not present, etc.) from David Ahern. 4) Bring back rt_uses_gateway member of struct rtable, it's semantics were not well understood and trying to remove it broke things. From David Ahern. 5) Move usbnet snaity checking, ignore endpoints with invalid wMaxPacketSize. From Bjørn Mork. 6) Missing Kconfig deps for sja1105 driver, from Mao Wenan. 7) Various small fixes to the mlx5 DR steering code, from Alaa Hleihel, Alex Vesker, and Yevgeny Kliteynik 8) Missing CAP_NET_RAW checks in various places, from Ori Nimron. 9) Fix crash when removing sch_cbs entry while offloading is enabled, from Vinicius Costa Gomes. 10) Signedness bug fixes, generally in looking at the result given by of_get_phy_mode() and friends. From Dan Crapenter. 11) Disable preemption around BPF_PROG_RUN() calls, from Eric Dumazet. 12) Don't create VRF ipv6 rules if ipv6 is disabled, from David Ahern. 13) Fix quantization code in tcp_bbr, from Kevin Yang. * git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net: (127 commits) net: tap: clean up an indentation issue nfp: abm: fix memory leak in nfp_abm_u32_knode_replace tcp: better handle TCP_USER_TIMEOUT in SYN_SENT state sk_buff: drop all skb extensions on free and skb scrubbing tcp_bbr: fix quantization code to not raise cwnd if not probing bandwidth mlxsw: spectrum_flower: Fail in case user specifies multiple mirror actions Documentation: Clarify trap's description mlxsw: spectrum: Clear VLAN filters during port initialization net: ena: clean up indentation issue NFC: st95hf: clean up indentation issue net: phy: micrel: add Asym Pause workaround for KSZ9021 net: socionext: ave: Avoid using netdev_err() before calling register_netdev() ptp: correctly disable flags on old ioctls lib: dimlib: fix help text typos net: dsa: microchip: Always set regmap stride to 1 nfp: flower: fix memory leak in nfp_flower_spawn_vnic_reprs nfp: flower: prevent memory leak in nfp_flower_spawn_phy_reprs net/sched: Set default of CONFIG_NET_TC_SKB_EXT to N vrf: Do not attempt to create IPv6 mcast rule if IPv6 is disabled net: sched: sch_sfb: don't call qdisc_put() while holding tree lock ... |
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Linus Torvalds | edf445ad7c |
Merge branch 'hugepage-fallbacks' (hugepatch patches from David Rientjes)
Merge hugepage allocation updates from David Rientjes: "We (mostly Linus, Andrea, and myself) have been discussing offlist how to implement a sane default allocation strategy for hugepages on NUMA platforms. With these reverts in place, the page allocator will happily allocate a remote hugepage immediately rather than try to make a local hugepage available. This incurs a substantial performance degradation when memory compaction would have otherwise made a local hugepage available. This series reverts those reverts and attempts to propose a more sane default allocation strategy specifically for hugepages. Andrea acknowledges this is likely to fix the swap storms that he originally reported that resulted in the patches that removed __GFP_THISNODE from hugepage allocations. The immediate goal is to return 5.3 to the behavior the kernel has implemented over the past several years so that remote hugepages are not immediately allocated when local hugepages could have been made available because the increased access latency is untenable. The next goal is to introduce a sane default allocation strategy for hugepages allocations in general regardless of the configuration of the system so that we prevent thrashing of local memory when compaction is unlikely to succeed and can prefer remote hugepages over remote native pages when the local node is low on memory." Note on timing: this reverts the hugepage VM behavior changes that got introduced fairly late in the 5.3 cycle, and that fixed a huge performance regression for certain loads that had been around since 4.18. Andrea had this note: "The regression of 4.18 was that it was taking hours to start a VM where 3.10 was only taking a few seconds, I reported all the details on lkml when it was finally tracked down in August 2018. https://lore.kernel.org/linux-mm/20180820032640.9896-2-aarcange@redhat.com/ __GFP_THISNODE in MADV_HUGEPAGE made the above enterprise vfio workload degrade like in the "current upstream" above. And it still would have been that bad as above until 5.3-rc5" where the bad behavior ends up happening as you fill up a local node, and without that change, you'd get into the nasty swap storm behavior due to compaction working overtime to make room for more memory on the nodes. As a result 5.3 got the two performance fix reverts in rc5. However, David Rientjes then noted that those performance fixes in turn regressed performance for other loads - although not quite to the same degree. He suggested reverting the reverts and instead replacing them with two small changes to how hugepage allocations are done (patch descriptions rephrased by me): - "avoid expensive reclaim when compaction may not succeed": just admit that the allocation failed when you're trying to allocate a huge-page and compaction wasn't successful. - "allow hugepage fallback to remote nodes when madvised": when that node-local huge-page allocation failed, retry without forcing the local node. but by then I judged it too late to replace the fixes for a 5.3 release. So 5.3 was released with behavior that harked back to the pre-4.18 logic. But now we're in the merge window for 5.4, and we can see if this alternate model fixes not just the horrendous swap storm behavior, but also restores the performance regression that the late reverts caused. Fingers crossed. * emailed patches from David Rientjes <rientjes@google.com>: mm, page_alloc: allow hugepage fallback to remote nodes when madvised mm, page_alloc: avoid expensive reclaim when compaction may not succeed Revert "Revert "Revert "mm, thp: consolidate THP gfp handling into alloc_hugepage_direct_gfpmask"" Revert "Revert "mm, thp: restore node-local hugepage allocations"" |
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Changbin Du | f7d6316fb4 |
mm, tracing: Print symbol name for call_site in trace events
To improve the readability of raw slab trace points, print the call_site ip using '%pS'. Then we can grep events with function names. [002] .... 808.188897: kmem_cache_free: call_site=putname+0x47/0x50 ptr=00000000cef40c80 [002] .... 808.188898: kfree: call_site=security_cred_free+0x42/0x50 ptr=0000000062400820 [002] .... 808.188904: kmem_cache_free: call_site=put_cred_rcu+0x88/0xa0 ptr=0000000058d74ef8 [002] .... 808.188913: kmem_cache_alloc: call_site=prepare_creds+0x26/0x100 ptr=0000000058d74ef8 bytes_req=168 bytes_alloc=576 gfp_flags=GFP_KERNEL [002] .... 808.188917: kmalloc: call_site=security_prepare_creds+0x77/0xa0 ptr=0000000062400820 bytes_req=8 bytes_alloc=336 gfp_flags=GFP_KERNEL|__GFP_ZERO [002] .... 808.188920: kmem_cache_alloc: call_site=getname_flags+0x4f/0x1e0 ptr=00000000cef40c80 bytes_req=4096 bytes_alloc=4480 gfp_flags=GFP_KERNEL [002] .... 808.188925: kmem_cache_free: call_site=putname+0x47/0x50 ptr=00000000cef40c80 [002] .... 808.188926: kfree: call_site=security_cred_free+0x42/0x50 ptr=0000000062400820 [002] .... 808.188931: kmem_cache_free: call_site=put_cred_rcu+0x88/0xa0 ptr=0000000058d74ef8 Link: http://lkml.kernel.org/r/20190914103215.23301-1-changbin.du@gmail.com Signed-off-by: Changbin Du <changbin.du@gmail.com> Signed-off-by: Steven Rostedt (VMware) <rostedt@goodmis.org> |
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David Rientjes | 19deb7695e |
Revert "Revert "Revert "mm, thp: consolidate THP gfp handling into alloc_hugepage_direct_gfpmask""
This reverts commit |
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David Rientjes | ac79f78dab |
Revert "Revert "mm, thp: restore node-local hugepage allocations""
This reverts commit
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Linus Torvalds | 9c5efe9ae7 |
Merge branch 'sched-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull scheduler fixes from Ingo Molnar: - Apply a number of membarrier related fixes and cleanups, which fixes a use-after-free race in the membarrier code - Introduce proper RCU protection for tasks on the runqueue - to get rid of the subtle task_rcu_dereference() interface that was easy to get wrong - Misc fixes, but also an EAS speedup * 'sched-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: sched/fair: Avoid redundant EAS calculation sched/core: Remove double update_max_interval() call on CPU startup sched/core: Fix preempt_schedule() interrupt return comment sched/fair: Fix -Wunused-but-set-variable warnings sched/core: Fix migration to invalid CPU in __set_cpus_allowed_ptr() sched/membarrier: Return -ENOMEM to userspace on memory allocation failure sched/membarrier: Skip IPIs when mm->mm_users == 1 selftests, sched/membarrier: Add multi-threaded test sched/membarrier: Fix p->mm->membarrier_state racy load sched/membarrier: Call sync_core only before usermode for same mm sched/membarrier: Remove redundant check sched/membarrier: Fix private expedited registration check tasks, sched/core: RCUify the assignment of rq->curr tasks, sched/core: With a grace period after finish_task_switch(), remove unnecessary code tasks, sched/core: Ensure tasks are available for a grace period after leaving the runqueue tasks: Add a count of task RCU users sched/core: Convert vcpu_is_preempted() from macro to an inline function sched/fair: Remove unused cfs_rq_clock_task() function |
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Linus Torvalds | aefcf2f4b5 |
Merge branch 'next-lockdown' of git://git.kernel.org/pub/scm/linux/kernel/git/jmorris/linux-security
Pull kernel lockdown mode from James Morris:
"This is the latest iteration of the kernel lockdown patchset, from
Matthew Garrett, David Howells and others.
From the original description:
This patchset introduces an optional kernel lockdown feature,
intended to strengthen the boundary between UID 0 and the kernel.
When enabled, various pieces of kernel functionality are restricted.
Applications that rely on low-level access to either hardware or the
kernel may cease working as a result - therefore this should not be
enabled without appropriate evaluation beforehand.
The majority of mainstream distributions have been carrying variants
of this patchset for many years now, so there's value in providing a
doesn't meet every distribution requirement, but gets us much closer
to not requiring external patches.
There are two major changes since this was last proposed for mainline:
- Separating lockdown from EFI secure boot. Background discussion is
covered here: https://lwn.net/Articles/751061/
- Implementation as an LSM, with a default stackable lockdown LSM
module. This allows the lockdown feature to be policy-driven,
rather than encoding an implicit policy within the mechanism.
The new locked_down LSM hook is provided to allow LSMs to make a
policy decision around whether kernel functionality that would allow
tampering with or examining the runtime state of the kernel should be
permitted.
The included lockdown LSM provides an implementation with a simple
policy intended for general purpose use. This policy provides a coarse
level of granularity, controllable via the kernel command line:
lockdown={integrity|confidentiality}
Enable the kernel lockdown feature. If set to integrity, kernel features
that allow userland to modify the running kernel are disabled. If set to
confidentiality, kernel features that allow userland to extract
confidential information from the kernel are also disabled.
This may also be controlled via /sys/kernel/security/lockdown and
overriden by kernel configuration.
New or existing LSMs may implement finer-grained controls of the
lockdown features. Refer to the lockdown_reason documentation in
include/linux/security.h for details.
The lockdown feature has had signficant design feedback and review
across many subsystems. This code has been in linux-next for some
weeks, with a few fixes applied along the way.
Stephen Rothwell noted that commit
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Linus Torvalds | f1f2f614d5 |
Merge branch 'next-integrity' of git://git.kernel.org/pub/scm/linux/kernel/git/zohar/linux-integrity
Pull integrity updates from Mimi Zohar: "The major feature in this time is IMA support for measuring and appraising appended file signatures. In addition are a couple of bug fixes and code cleanup to use struct_size(). In addition to the PE/COFF and IMA xattr signatures, the kexec kernel image may be signed with an appended signature, using the same scripts/sign-file tool that is used to sign kernel modules. Similarly, the initramfs may contain an appended signature. This contained a lot of refactoring of the existing appended signature verification code, so that IMA could retain the existing framework of calculating the file hash once, storing it in the IMA measurement list and extending the TPM, verifying the file's integrity based on a file hash or signature (eg. xattrs), and adding an audit record containing the file hash, all based on policy. (The IMA support for appended signatures patch set was posted and reviewed 11 times.) The support for appended signature paves the way for adding other signature verification methods, such as fs-verity, based on a single system-wide policy. The file hash used for verifying the signature and the signature, itself, can be included in the IMA measurement list" * 'next-integrity' of git://git.kernel.org/pub/scm/linux/kernel/git/zohar/linux-integrity: ima: ima_api: Use struct_size() in kzalloc() ima: use struct_size() in kzalloc() sefltest/ima: support appended signatures (modsig) ima: Fix use after free in ima_read_modsig() MODSIGN: make new include file self contained ima: fix freeing ongoing ahash_request ima: always return negative code for error ima: Store the measurement again when appraising a modsig ima: Define ima-modsig template ima: Collect modsig ima: Implement support for module-style appended signatures ima: Factor xattr_verify() out of ima_appraise_measurement() ima: Add modsig appraise_type option for module-style appended signatures integrity: Select CONFIG_KEYS instead of depending on it PKCS#7: Introduce pkcs7_get_digest() PKCS#7: Refactor verify_pkcs7_signature() MODSIGN: Export module signature definitions ima: initialize the "template" field with the default template |
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Linus Torvalds | 298fb76a55 |
Highlights:
- add a new knfsd file cache, so that we don't have to open and close on each (NFSv2/v3) READ or WRITE. This can speed up read and write in some cases. It also replaces our readahead cache. - Prevent silent data loss on write errors, by treating write errors like server reboots for the purposes of write caching, thus forcing clients to resend their writes. - Tweak the code that allocates sessions to be more forgiving, so that NFSv4.1 mounts are less likely to hang when a server already has a lot of clients. - Eliminate an arbitrary limit on NFSv4 ACL sizes; they should now be limited only by the backend filesystem and the maximum RPC size. - Allow the server to enforce use of the correct kerberos credentials when a client reclaims state after a reboot. And some miscellaneous smaller bugfixes and cleanup. -----BEGIN PGP SIGNATURE----- iQJJBAABCAAzFiEEYtFWavXG9hZotryuJ5vNeUKO4b4FAl2OoFcVHGJmaWVsZHNA ZmllbGRzZXMub3JnAAoJECebzXlCjuG+dRoP/3OW1NxPjpjbCQWZL0M+O3AYJJla W8E+uoZKMosFEe/ymokMD0Vn5s47jPaMCifMjHZa2GygW8zHN9X2v0HURx/lob+o /rJXwMn78N/8kdbfDz2FvaCPeT0IuNzRIFBV8/sSXofqwCBwvPo+cl0QGrd4/xLp X35qlupx62TRk+kbdRjvv8kpS5SJ7BvR+FSA1WubNYWw2hpdEsr2OCFdGq2Wvthy DK6AfGBXfJGsOE+HGCSj6ejRV6i0UOJ17P8gRSsx+YT0DOe5E7ROjt+qvvRwk489 wmR8Vjuqr1e40eGAUq3xuLfk5F5NgycY4ekVxk/cTVFNwWcz2DfdjXQUlyPAbrSD SqIyxN1qdKT24gtr7AHOXUWJzBYPWDgObCVBXUGzyL81RiDdhf38HRNjL2TcSDld tzCjQ0wbPw+iT74v6qQRY05oS+h3JOtDjU4pxsBnxVtNn4WhGJtaLfWW8o1C1QwU bc4aX3TlYhDmzU7n7Zjt4rFXGJfyokM+o6tPao1Z60Pmsv1gOk4KQlzLtW/jPHx4 ZwYTwVQUKRDBfC62nmgqDyGI3/Qu11FuIxL2KXUCgkwDxNWN4YkwYjOGw9Lb5qKM wFpxq6CDNZB/IWLEu8Yg85kDPPUJMoI657lZb7Osr/MfBpU0YljcMOIzLBy8uV1u 9COUbPaQipiWGu/0 =diBo -----END PGP SIGNATURE----- Merge tag 'nfsd-5.4' of git://linux-nfs.org/~bfields/linux Pull nfsd updates from Bruce Fields: "Highlights: - Add a new knfsd file cache, so that we don't have to open and close on each (NFSv2/v3) READ or WRITE. This can speed up read and write in some cases. It also replaces our readahead cache. - Prevent silent data loss on write errors, by treating write errors like server reboots for the purposes of write caching, thus forcing clients to resend their writes. - Tweak the code that allocates sessions to be more forgiving, so that NFSv4.1 mounts are less likely to hang when a server already has a lot of clients. - Eliminate an arbitrary limit on NFSv4 ACL sizes; they should now be limited only by the backend filesystem and the maximum RPC size. - Allow the server to enforce use of the correct kerberos credentials when a client reclaims state after a reboot. And some miscellaneous smaller bugfixes and cleanup" * tag 'nfsd-5.4' of git://linux-nfs.org/~bfields/linux: (34 commits) sunrpc: clean up indentation issue nfsd: fix nfs read eof detection nfsd: Make nfsd_reset_boot_verifier_locked static nfsd: degraded slot-count more gracefully as allocation nears exhaustion. nfsd: handle drc over-allocation gracefully. nfsd: add support for upcall version 2 nfsd: add a "GetVersion" upcall for nfsdcld nfsd: Reset the boot verifier on all write I/O errors nfsd: Don't garbage collect files that might contain write errors nfsd: Support the server resetting the boot verifier nfsd: nfsd_file cache entries should be per net namespace nfsd: eliminate an unnecessary acl size limit Deprecate nfsd fault injection nfsd: remove duplicated include from filecache.c nfsd: Fix the documentation for svcxdr_tmpalloc() nfsd: Fix up some unused variable warnings nfsd: close cached files prior to a REMOVE or RENAME that would replace target nfsd: rip out the raparms cache nfsd: have nfsd_test_lock use the nfsd_file cache nfsd: hook up nfs4_preprocess_stateid_op to the nfsd_file cache ... |
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Linus Torvalds | 8f744bdee4 |
add virtio-fs
-----BEGIN PGP SIGNATURE----- iHUEABYIAB0WIQSQHSd0lITzzeNWNm3h3BK/laaZPAUCXYx2zAAKCRDh3BK/laaZ PFpHAQD2G+F8a9e41jFTJg5YpNKMD8/Pl4T6v9chIO9qPXF2IAEAji0P1JterRfv ixiBhv54hSwYbk527nxNWE9tP5gAHAQ= =WCHy -----END PGP SIGNATURE----- Merge tag 'virtio-fs-5.4' of git://git.kernel.org/pub/scm/linux/kernel/git/mszeredi/fuse Pull fuse virtio-fs support from Miklos Szeredi: "Virtio-fs allows exporting directory trees on the host and mounting them in guest(s). This isn't actually a new filesystem, but a glue layer between the fuse filesystem and a virtio based back-end. It's similar in functionality to the existing virtio-9p solution, but significantly faster in benchmarks and has better POSIX compliance. Further permformance improvements can be achieved by sharing the page cache between host and guest, allowing for faster I/O and reduced memory use. Kata Containers have been including the out-of-tree virtio-fs (with the shared page cache patches as well) since version 1.7 as an experimental feature. They have been active in development and plan to switch from virtio-9p to virtio-fs as their default solution. There has been interest from other sources as well. The userspace infrastructure is slated to be merged into qemu once the kernel part hits mainline. This was developed by Vivek Goyal, Dave Gilbert and Stefan Hajnoczi" * tag 'virtio-fs-5.4' of git://git.kernel.org/pub/scm/linux/kernel/git/mszeredi/fuse: virtio-fs: add virtiofs filesystem virtio-fs: add Documentation/filesystems/virtiofs.rst fuse: reserve values for mapping protocol |
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Linus Torvalds | 568d850e3c |
RISC-V additional updates for v5.4-rc1
Some additional RISC-V updates for v5.4-rc1. This includes one significant fix: - Prevent interrupts from being unconditionally re-enabled during exception handling if they were disabled in the context in which the exception occurred Also a few other fixes: - Fix a build error when sparse memory support is manually enabled - Prevent CPUs beyond CONFIG_NR_CPUS from being enabled in early boot And a few minor improvements: - DT improvements: in the FU540 SoC DT files, improve U-Boot compatibility by adding an "ethernet0" alias, drop an unnecessary property from the DT files, and add support for the PWM device - KVM preparation: add a KVM-related macro for future RISC-V KVM support, and export some symbols required to build KVM support as modules - defconfig additions: build more drivers by default for QEMU configurations -----BEGIN PGP SIGNATURE----- iQIzBAABCgAdFiEElRDoIDdEz9/svf2Kx4+xDQu9KksFAl2OUysACgkQx4+xDQu9 Kks5Lg//bVTjarTnzgelTMz99UWiVhFc9X2H/r0zPWAms6if1bQVxIPDzffJnO9n ldnYMLKSo3s7vUNdbs8NqdrgxZ21XSU1x3KllnEPub89e5e12wjMpqFcow0Yx0GF 16QEsHfvUsAfIcXJinf6YnQ1AO3n+DnvhxGE3ey+8AIJk676cnsxU0R5o9defLdk XCC/o7BAt+qBZytJiSeIKQkozQkPbrzoQs2HZpqm/pDllVMFrpYAKaVLWMiqdvjO teMqEgeQLjnHxrAHrfeKG8ssPmnf81TWOFM1fmUy2kqxsGiZSPj2LrpaghQpN/EB 1j0irgzesI0vX90rYwV4WtYoeBKICqcXo+c6wVrKaUrnBX0NiQbt55Ryf2k0JFw7 YlEPjEt46qRMLQ5J5LFALkp1bSCwX4XU3BVKCHLuzTKlg3ntHJGYAA9gPbGIdmYK NkNYqQUowOWI6x9SkPJwStpXyckqCkj9nSp8WV5YqmgrpfZjw0b7yaU1GxfLhVkt ygGyl0EMlL3iwcGHfn+qXg8m2zB9PjcdJZGwkAks0kWroxxg+xnEfA413zaiVNO2 AKFRLQtoZG6mtujoDBNxyc09ewovte7lXil/+rLQEcQhZJPMpK3oiM53NH736Zi5 fpt7YhanIGRswPaNQgwz981R23aDb6NZXUUaI4XStfDxJN5Px6M= =wfz5 -----END PGP SIGNATURE----- Merge tag 'riscv/for-v5.4-rc1-b' of git://git.kernel.org/pub/scm/linux/kernel/git/riscv/linux Pull more RISC-V updates from Paul Walmsley: "Some additional RISC-V updates. This includes one significant fix: - Prevent interrupts from being unconditionally re-enabled during exception handling if they were disabled in the context in which the exception occurred Also a few other fixes: - Fix a build error when sparse memory support is manually enabled - Prevent CPUs beyond CONFIG_NR_CPUS from being enabled in early boot And a few minor improvements: - DT improvements: in the FU540 SoC DT files, improve U-Boot compatibility by adding an "ethernet0" alias, drop an unnecessary property from the DT files, and add support for the PWM device - KVM preparation: add a KVM-related macro for future RISC-V KVM support, and export some symbols required to build KVM support as modules - defconfig additions: build more drivers by default for QEMU configurations" * tag 'riscv/for-v5.4-rc1-b' of git://git.kernel.org/pub/scm/linux/kernel/git/riscv/linux: riscv: Avoid interrupts being erroneously enabled in handle_exception() riscv: dts: sifive: Drop "clock-frequency" property of cpu nodes riscv: dts: sifive: Add ethernet0 to the aliases node RISC-V: Export kernel symbols for kvm KVM: RISC-V: Add KVM_REG_RISCV for ONE_REG interface arch/riscv: disable excess harts before picking main boot hart RISC-V: Enable VIRTIO drivers in RV64 and RV32 defconfig RISC-V: Fix building error when CONFIG_SPARSEMEM_MANUAL=y riscv: dts: Add DT support for SiFive FU540 PWM driver |
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Linus Torvalds | 8bbe0dec38 |
x86 KVM changes:
* The usual accuracy improvements for nested virtualization * The usual round of code cleanups from Sean * Added back optimizations that were prematurely removed in 5.2 (the bare minimum needed to fix the regression was in 5.3-rc8, here comes the rest) * Support for UMWAIT/UMONITOR/TPAUSE * Direct L2->L0 TLB flushing when L0 is Hyper-V and L1 is KVM * Tell Windows guests if SMT is disabled on the host * More accurate detection of vmexit cost * Revert a pvqspinlock pessimization -----BEGIN PGP SIGNATURE----- Version: GnuPG v2.0.22 (GNU/Linux) iQEcBAABAgAGBQJdjfaKAAoJEL/70l94x66D8MAH/2thJnM47tYtMTFA4GBFugeH mAx8OApWFBo8apOip+8ElFLPQ8FQdZCzr9ti8H4JkuzKxgsxCs1iqEg5pHEKxSTi K9kLOZwoFtwgy3XmxC0PIZ9lT2Wx74ruh1HF+QG/YsjKH636UPv2VpmulsTNbm62 2ryzOb3TlGT/cjf+gv9l6IYIxZa2Ff19PF4i//H8u4YRBj358/jr99CK01iE0M9r 4NhEKiQZywzREWtKxymGOM6HEbwbWcIa+loYjj2htq8epep6f9Y1zQ0Jcn5+nPA0 cn1T2gGJAJ0OUahKLwNbz8pzrFDkW+eoQgqCBJZ4RT9Uf8WCESfl14p+/vRkAMg= =tk5S -----END PGP SIGNATURE----- Merge tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm Pull more KVM updates from Paolo Bonzini: "x86 KVM changes: - The usual accuracy improvements for nested virtualization - The usual round of code cleanups from Sean - Added back optimizations that were prematurely removed in 5.2 (the bare minimum needed to fix the regression was in 5.3-rc8, here comes the rest) - Support for UMWAIT/UMONITOR/TPAUSE - Direct L2->L0 TLB flushing when L0 is Hyper-V and L1 is KVM - Tell Windows guests if SMT is disabled on the host - More accurate detection of vmexit cost - Revert a pvqspinlock pessimization" * tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm: (56 commits) KVM: nVMX: cleanup and fix host 64-bit mode checks KVM: vmx: fix build warnings in hv_enable_direct_tlbflush() on i386 KVM: x86: Don't check kvm_rebooting in __kvm_handle_fault_on_reboot() KVM: x86: Drop ____kvm_handle_fault_on_reboot() KVM: VMX: Add error handling to VMREAD helper KVM: VMX: Optimize VMX instruction error and fault handling KVM: x86: Check kvm_rebooting in kvm_spurious_fault() KVM: selftests: fix ucall on x86 Revert "locking/pvqspinlock: Don't wait if vCPU is preempted" kvm: nvmx: limit atomic switch MSRs kvm: svm: Intercept RDPRU kvm: x86: Add "significant index" flag to a few CPUID leaves KVM: x86/mmu: Skip invalid pages during zapping iff root_count is zero KVM: x86/mmu: Explicitly track only a single invalid mmu generation KVM: x86/mmu: Revert "KVM: x86/mmu: Remove is_obsolete() call" KVM: x86/mmu: Revert "Revert "KVM: MMU: reclaim the zapped-obsolete page first"" KVM: x86/mmu: Revert "Revert "KVM: MMU: collapse TLB flushes when zap all pages"" KVM: x86/mmu: Revert "Revert "KVM: MMU: zap pages in batch"" KVM: x86/mmu: Revert "Revert "KVM: MMU: add tracepoint for kvm_mmu_invalidate_all_pages"" KVM: x86/mmu: Revert "Revert "KVM: MMU: show mmu_valid_gen in shadow page related tracepoints"" ... |
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Linus Torvalds | e37e3bc7e2 |
pwm: Changes for v5.4-rc1
Besides one new driver being added for the PWM controller found in various Spreadtrum SoCs, this series of changes brings a slew of, mostly minor, fixes and cleanups for existing drivers, as well as some enhancements to the core code. Lastly, Uwe is added to the PWM subsystem entry of the MAINTAINERS file, making official his role as a reviewer. -----BEGIN PGP SIGNATURE----- iQJNBAABCAA3FiEEiOrDCAFJzPfAjcif3SOs138+s6EFAl2ON5UZHHRoaWVycnku cmVkaW5nQGdtYWlsLmNvbQAKCRDdI6zXfz6zoVg2EAC2QP51EywsDVQd8ZFvXBZB SL2RN9EWY0nHFnjGL2VSEOvsWWoE2HgrzXbWuiKDSkpRMTGtz/R1VznmBegZpVz/ eKP1ebFU+1EQ2A1GB4VLGslGVs0R7uvQap7KMRf+nD6qzstwWlz5nPP8E/4dipAX fYZBU37sTvAXycVosqAOiGaJvwfbo0ExysCD0bWccp52O06osgbZwGDhShDRTQv0 wOLR/rPbYXbVMyETlO8gjHVGU/N6cAq0SDR2VGcXqIe3H86K3R7ec8TEhcLJy6R5 nLX9Wx+gMyiWJGrU+s5i682VUdzQeLE4sH9c47M8qqreM4ytXfdttMeg3hgmalra eVm4uWtJ2+ZDRSl+yqJ8GfuSVGV4S9uQNlJ0OkAizmz+mU2WGeM1v8aOFlGokSi0 mxt+EZFdS7M0rZpWU0Fv01urxdhhVgsFXkD72xldV2vnIP6afhzGgKN3S6zbwzAQ WOgTHgVmcenM4hRcEmV8n7nF6f8BIA5RSNx+jrrkRD4gwHwDAiEK7hWJTCDXisB9 J6HgChqztrNtnyZMOealHxEgTtJqRUVX69mo9NaUeYps2Qg4y1gStLC3b1YnJZcI sTCrKhVjhFn1bNOe1UBSvcehIorL3mFV203TBgJJaMMhoJYE28XqYTNkGVDZ2bLP DdyExtL1Dx7IxEwS7IGOwA== =C9sW -----END PGP SIGNATURE----- Merge tag 'pwm/for-5.4-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/thierry.reding/linux-pwm Pull pwm updates from Thierry Reding: "Besides one new driver being added for the PWM controller found in various Spreadtrum SoCs, this series of changes brings a slew of, mostly minor, fixes and cleanups for existing drivers, as well as some enhancements to the core code. Lastly, Uwe is added to the PWM subsystem entry of the MAINTAINERS file, making official his role as a reviewer" * tag 'pwm/for-5.4-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/thierry.reding/linux-pwm: (34 commits) MAINTAINERS: Add myself as reviewer for the PWM subsystem MAINTAINERS: Add patchwork link for PWM entry MAINTAINERS: Add a selection of PWM related keywords to the PWM entry pwm: mediatek: Add MT7629 compatible string dt-bindings: pwm: Update bindings for MT7629 SoC pwm: mediatek: Update license and switch to SPDX tag pwm: mediatek: Use pwm_mediatek as common prefix pwm: mediatek: Allocate the clks array dynamically pwm: mediatek: Remove the has_clks field pwm: mediatek: Drop the check for of_device_get_match_data() pwm: atmel: Consolidate driver data initialization pwm: atmel: Remove unneeded check for match data pwm: atmel: Remove platform_device_id and use only dt bindings pwm: stm32-lp: Add check in case requested period cannot be achieved pwm: Ensure pwm_apply_state() doesn't modify the state argument pwm: fsl-ftm: Don't update the state for the caller of pwm_apply_state() pwm: sun4i: Don't update the state for the caller of pwm_apply_state() pwm: rockchip: Don't update the state for the caller of pwm_apply_state() pwm: Let pwm_get_state() return the last implemented state pwm: Introduce local struct pwm_chip in pwm_apply_state() ... |
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Florian Westphal | 174e23810c |
sk_buff: drop all skb extensions on free and skb scrubbing
Now that we have a 3rd extension, add a new helper that drops the
extension space and use it when we need to scrub an sk_buff.
At this time, scrubbing clears secpath and bridge netfilter data, but
retains the tc skb extension, after this patch all three get cleared.
NAPI reuse/free assumes we can only have a secpath attached to skb, but
it seems better to clear all extensions there as well.
v2: add unlikely hint (Eric Dumazet)
Fixes:
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Jacob Keller | 2df4de1681 |
ptp: correctly disable flags on old ioctls
Commit
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David S. Miller | c5f095baa8 |
Merge git://git.kernel.org/pub/scm/linux/kernel/git/pablo/nf
Pablo Neira Ayuso says: ==================== Netfilter fixes for net The following patchset contains Netfilter fixes for net: 1) Add NFT_CHAIN_POLICY_UNSET to replace hardcoded -1 to specify that the chain policy is unset. The chain policy field is actually defined as an 8-bit unsigned integer. 2) Remove always true condition reported by smatch in chain policy check. 3) Fix element lookup on dynamic sets, from Florian Westphal. 4) Use __u8 in ebtables uapi header, from Masahiro Yamada. 5) Bogus EBUSY when removing flowtable after chain flush, from Laura Garcia Liebana. ==================== Signed-off-by: David S. Miller <davem@davemloft.net> |
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Linus Torvalds | 289991ce1c |
drm fixes for 5.4-rc1
core: - Some cleanups and fixes in the self-refresh helpers - Some cleanups and fixes in the atomic helpers amdgpu: - Fix a 64 bit divide - Prevent a memory leak in a failure case in dc - Load proper gfx firmware on navi14 variants - Add more navi12 and navi14 PCI ids - Misc fixes for renoir - Fix bandwidth issues with multiple displays on vega20 - Support for Dali - Fix a possible oops with KFD on hawaii - Fix for backlight level after resume on some APUs - Other misc fixes panfrost: - Multiple panfrost fixes for regulator support and page fault handling -----BEGIN PGP SIGNATURE----- iQIcBAABAgAGBQJdjZr6AAoJEAx081l5xIa+nboP+gPWzx45Q3IsbnaZmcdFTFEf +/XgScoFcv5Uhd3aXtrSYDvPnSyNXpGsV5ccE/FtxNd4G75n20tPFxGNhjzyXfdc B2x1IRgc82W1KxYwwDlmd+f/86h6uthFkh1ToKN3hsHWNm8Wu8AgoJnoWvqwluf9 natSFnQPQIvcADpbpyk8FiNcXvMg0qrKQ8aj3uPxqUs4/ftigzez+5vYJOkktoEJ NFtlouVvIZejVo6l4Q5ebXXsol7On02iHUszpdJtb5FxMcBQwAafewCGln2622cA 8ooWmekZNtoHUH3WmUlrs7TqPKtoOqIEkMO8UvCJDwBB4/ft8sJRPDKFgk547E/8 Htv6MZXCSOT+/XxebM/wHijOg3MQVjPzO9s73YSmkytzGZVQ/Fgohl/6W+bN/xAm j/huS5ZozengAldFJHG4wruSk820Vzx736x2pk+9sbpf7PdFDIpuZus8U8wHc411 hu3S2397IxyX4XswLg8BTaIOhCXwT7CluQ9mYD1THPgRzG5YPha8JelTcwwlVsD9 2Cw6mCUAqydHHMboWQnEhRXhuhVfGlPAdJTsdyoI6zdXYqU/ThihJPBgG0wSq0y0 fAsj/9NRqSzg6hk9vm1QdCeOthKOuAZ0PgLcVHI1RNSwEyrN8yOupVwe7+Mn+q2z UNbfr2qXGqKxn6rqUy2W =yCyF -----END PGP SIGNATURE----- Merge tag 'drm-next-2019-09-27' of git://anongit.freedesktop.org/drm/drm Pull drm fixes from Dave Airlie: "Fixes built up over the past 1.5 weeks or so, it's two weeks of amdgpu, some core cleanups and some panfrost fixes. I also finally figured out why my desktop was slow to do a bunch of stuff (someone gave it an IPv6 address which can't reach anything!). core: - Some cleanups and fixes in the self-refresh helpers - Some cleanups and fixes in the atomic helpers amdgpu: - Fix a 64 bit divide - Prevent a memory leak in a failure case in dc - Load proper gfx firmware on navi14 variants - Add more navi12 and navi14 PCI ids - Misc fixes for renoir - Fix bandwidth issues with multiple displays on vega20 - Support for Dali - Fix a possible oops with KFD on hawaii - Fix for backlight level after resume on some APUs - Other misc fixes panfrost: - Multiple panfrost fixes for regulator support and page fault handling" * tag 'drm-next-2019-09-27' of git://anongit.freedesktop.org/drm/drm: (34 commits) drm/amd/display: prevent memory leak drm/amdgpu/gfx10: add support for wks firmware loading drm/amdgpu/display: include slab.h in dcn21_resource.c drm/amdgpu/display: fix 64 bit divide drm/panfrost: Prevent race when handling page fault drm/panfrost: Remove NULL checks for regulator drm/panfrost: Fix regulator_get_optional() misuse drm: Measure Self Refresh Entry/Exit times to avoid thrashing drm: Fix kerneldoc and remove unused struct member in self_refresh helper drm/atomic: Rename crtc_state->pageflip_flags to async_flip drm/atomic: Reject FLIP_ASYNC unconditionally drm/atomic: Take the atomic toys away from X drm/amdgpu: flag navi12 and 14 as experimental for 5.4 drm/kms: Duct-tape for mode object lifetime checks drm/amdgpu: add navi12 pci id drm/amdgpu: add navi14 PCI ID for work station SKU drm/amdkfd: Swap trap temporary registers in gfx10 trap handler drm/amd/powerplay: implement sysfs for getting dpm clock drm/amd/display: Restore backlight brightness after system resume drm/amd/display: Implement voltage limitation for dali ... |
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David S. Miller | 3c30819dc6 |
Merge git://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf
Daniel Borkmann says: ==================== pull-request: bpf 2019-09-27 The following pull-request contains BPF updates for your *net* tree. The main changes are: 1) Fix libbpf's BTF dumper to not skip anonymous enum definitions, from Andrii. 2) Fix BTF verifier issues when handling the BTF of vmlinux, from Alexei. 3) Fix nested calls into bpf_event_output() from TCP sockops BPF programs, from Allan. 4) Fix NULL pointer dereference in AF_XDP's xsk map creation when allocation fails, from Jonathan. 5) Remove unneeded 64 byte alignment requirement of the AF_XDP UMEM headroom, from Bjorn. 6) Remove unused XDP_OPTIONS getsockopt() call which results in an error on older kernels, from Toke. 7) Fix a client/server race in tcp_rtt BPF kselftest case, from Stanislav. 8) Fix indentation issue in BTF's btf_enum_check_kflag_member(), from Colin. ==================== Signed-off-by: David S. Miller <davem@davemloft.net> |
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Eric Dumazet | f6c0f5d209 |
tcp: honor SO_PRIORITY in TIME_WAIT state
ctl packets sent on behalf of TIME_WAIT sockets currently have a zero skb->priority, which can cause various problems. In this patch we : - add a tw_priority field in struct inet_timewait_sock. - populate it from sk->sk_priority when a TIME_WAIT is created. - For IPv4, change ip_send_unicast_reply() and its two callers to propagate tw_priority correctly. ip_send_unicast_reply() no longer changes sk->sk_priority. - For IPv6, make sure TIME_WAIT sockets pass their tw_priority field to tcp_v6_send_response() and tcp_v6_send_ack(). Signed-off-by: Eric Dumazet <edumazet@google.com> Signed-off-by: David S. Miller <davem@davemloft.net> |
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Eric Dumazet | 4f6570d720 |
ipv6: add priority parameter to ip6_xmit()
Currently, ip6_xmit() sets skb->priority based on sk->sk_priority This is not desirable for TCP since TCP shares the same ctl socket for a given netns. We want to be able to send RST or ACK packets with a non zero skb->priority. This patch has no functional change. Signed-off-by: Eric Dumazet <edumazet@google.com> Signed-off-by: David S. Miller <davem@davemloft.net> |
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Eric Dumazet | 159d2c7d81 |
sch_netem: fix rcu splat in netem_enqueue()
qdisc_root() use from netem_enqueue() triggers a lockdep warning. __dev_queue_xmit() uses rcu_read_lock_bh() which is not equivalent to rcu_read_lock() + local_bh_disable_bh as far as lockdep is concerned. WARNING: suspicious RCU usage 5.3.0-rc7+ #0 Not tainted ----------------------------- include/net/sch_generic.h:492 suspicious rcu_dereference_check() usage! other info that might help us debug this: rcu_scheduler_active = 2, debug_locks = 1 3 locks held by syz-executor427/8855: #0: 00000000b5525c01 (rcu_read_lock_bh){....}, at: lwtunnel_xmit_redirect include/net/lwtunnel.h:92 [inline] #0: 00000000b5525c01 (rcu_read_lock_bh){....}, at: ip_finish_output2+0x2dc/0x2570 net/ipv4/ip_output.c:214 #1: 00000000b5525c01 (rcu_read_lock_bh){....}, at: __dev_queue_xmit+0x20a/0x3650 net/core/dev.c:3804 #2: 00000000364bae92 (&(&sch->q.lock)->rlock){+.-.}, at: spin_lock include/linux/spinlock.h:338 [inline] #2: 00000000364bae92 (&(&sch->q.lock)->rlock){+.-.}, at: __dev_xmit_skb net/core/dev.c:3502 [inline] #2: 00000000364bae92 (&(&sch->q.lock)->rlock){+.-.}, at: __dev_queue_xmit+0x14b8/0x3650 net/core/dev.c:3838 stack backtrace: CPU: 0 PID: 8855 Comm: syz-executor427 Not tainted 5.3.0-rc7+ #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Call Trace: __dump_stack lib/dump_stack.c:77 [inline] dump_stack+0x172/0x1f0 lib/dump_stack.c:113 lockdep_rcu_suspicious+0x153/0x15d kernel/locking/lockdep.c:5357 qdisc_root include/net/sch_generic.h:492 [inline] netem_enqueue+0x1cfb/0x2d80 net/sched/sch_netem.c:479 __dev_xmit_skb net/core/dev.c:3527 [inline] __dev_queue_xmit+0x15d2/0x3650 net/core/dev.c:3838 dev_queue_xmit+0x18/0x20 net/core/dev.c:3902 neigh_hh_output include/net/neighbour.h:500 [inline] neigh_output include/net/neighbour.h:509 [inline] ip_finish_output2+0x1726/0x2570 net/ipv4/ip_output.c:228 __ip_finish_output net/ipv4/ip_output.c:308 [inline] __ip_finish_output+0x5fc/0xb90 net/ipv4/ip_output.c:290 ip_finish_output+0x38/0x1f0 net/ipv4/ip_output.c:318 NF_HOOK_COND include/linux/netfilter.h:294 [inline] ip_mc_output+0x292/0xf40 net/ipv4/ip_output.c:417 dst_output include/net/dst.h:436 [inline] ip_local_out+0xbb/0x190 net/ipv4/ip_output.c:125 ip_send_skb+0x42/0xf0 net/ipv4/ip_output.c:1555 udp_send_skb.isra.0+0x6b2/0x1160 net/ipv4/udp.c:887 udp_sendmsg+0x1e96/0x2820 net/ipv4/udp.c:1174 inet_sendmsg+0x9e/0xe0 net/ipv4/af_inet.c:807 sock_sendmsg_nosec net/socket.c:637 [inline] sock_sendmsg+0xd7/0x130 net/socket.c:657 ___sys_sendmsg+0x3e2/0x920 net/socket.c:2311 __sys_sendmmsg+0x1bf/0x4d0 net/socket.c:2413 __do_sys_sendmmsg net/socket.c:2442 [inline] __se_sys_sendmmsg net/socket.c:2439 [inline] __x64_sys_sendmmsg+0x9d/0x100 net/socket.c:2439 do_syscall_64+0xfd/0x6a0 arch/x86/entry/common.c:296 entry_SYSCALL_64_after_hwframe+0x49/0xbe Signed-off-by: Eric Dumazet <edumazet@google.com> Reported-by: syzbot <syzkaller@googlegroups.com> Signed-off-by: David S. Miller <davem@davemloft.net> |
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Linus Torvalds | 972a2bf7df |
NFS Client Updates for Linux 5.3
Stable bugfixes: - Dequeue the request from the receive queue while we're re-encoding # v4.20+ - Fix buffer handling of GSS MIC without slack # 5.1 Features: - Increase xprtrdma maximum transport header and slot table sizes - Add support for nfs4_call_sync() calls using a custom rpc_task_struct - Optimize the default readahead size - Enable pNFS filelayout LAYOUTGET on OPEN Other bugfixes and cleanups: - Fix possible null-pointer dereferences and memory leaks - Various NFS over RDMA cleanups - Various NFS over RDMA comment updates - Don't receive TCP data into a reset request buffer - Don't try to parse incomplete RPC messages - Fix congestion window race with disconnect - Clean up pNFS return-on-close error handling - Fixes for NFS4ERR_OLD_STATEID handling -----BEGIN PGP SIGNATURE----- iQIzBAABCAAdFiEEnZ5MQTpR7cLU7KEp18tUv7ClQOsFAl2NC04ACgkQ18tUv7Cl QOs4Tg//bAlGs+dIKixAmeMKmTd6I34laUnuyV/12yPQDgo6bryLrTngfe2BYvmG 2l+8H7yHfR4/gQE4vhR0c15xFgu6pvjBGR0/nNRaXienIPXO4xsQkcaxVA7SFRY2 HjffZwyoBfjyRps0jL+2sTsKbRtSkf9Dn+BONRgesg51jK1jyWkXqXpmgi4uMO4i ojpTrW81dwo7Yhv08U2A/Q1ifMJ8F9dVYuL5sm+fEbVI/Nxoz766qyB8rs8+b4Xj 3gkfyh/Y1zoMmu6c+r2Q67rhj9WYbDKpa6HH9yX1zM/RLTiU7czMX+kjuQuOHWxY YiEk73NjJ48WJEep3odess1q/6WiAXX7UiJM1SnDFgAa9NZMdfhqMm6XduNO1m60 sy0i8AdxdQciWYexOXMsBuDUCzlcoj4WYs1QGpY3uqO1MznQS/QUfu65fx8CzaT5 snm6ki5ivqXH/js/0Z4MX2n/sd1PGJ5ynMkekxJ8G3gw+GC/oeSeGNawfedifLKK OdzyDdeiel5Me1p4I28j1WYVLHvtFmEWEU9oytdG0D/rjC/pgYgW/NYvAao8lQ4Z 06wdcyAM66ViAPrbYeE7Bx4jy8zYRkiw6Y3kIbLgrlMugu3BhIW5Mi3BsgL4f4am KsqkzUqPZMCOVwDuUILSuPp4uHaR+JTJttywiLniTL6reF5kTiA= =4Ey6 -----END PGP SIGNATURE----- Merge tag 'nfs-for-5.4-1' of git://git.linux-nfs.org/projects/anna/linux-nfs Pull NFS client updates from Anna Schumaker: "Stable bugfixes: - Dequeue the request from the receive queue while we're re-encoding # v4.20+ - Fix buffer handling of GSS MIC without slack # 5.1 Features: - Increase xprtrdma maximum transport header and slot table sizes - Add support for nfs4_call_sync() calls using a custom rpc_task_struct - Optimize the default readahead size - Enable pNFS filelayout LAYOUTGET on OPEN Other bugfixes and cleanups: - Fix possible null-pointer dereferences and memory leaks - Various NFS over RDMA cleanups - Various NFS over RDMA comment updates - Don't receive TCP data into a reset request buffer - Don't try to parse incomplete RPC messages - Fix congestion window race with disconnect - Clean up pNFS return-on-close error handling - Fixes for NFS4ERR_OLD_STATEID handling" * tag 'nfs-for-5.4-1' of git://git.linux-nfs.org/projects/anna/linux-nfs: (53 commits) pNFS/filelayout: enable LAYOUTGET on OPEN NFS: Optimise the default readahead size NFSv4: Handle NFS4ERR_OLD_STATEID in LOCKU NFSv4: Handle NFS4ERR_OLD_STATEID in CLOSE/OPEN_DOWNGRADE NFSv4: Fix OPEN_DOWNGRADE error handling pNFS: Handle NFS4ERR_OLD_STATEID on layoutreturn by bumping the state seqid NFSv4: Add a helper to increment stateid seqids NFSv4: Handle RPC level errors in LAYOUTRETURN NFSv4: Handle NFS4ERR_DELAY correctly in return-on-close NFSv4: Clean up pNFS return-on-close error handling pNFS: Ensure we do clear the return-on-close layout stateid on fatal errors NFS: remove unused check for negative dentry NFSv3: use nfs_add_or_obtain() to create and reference inodes NFS: Refactor nfs_instantiate() for dentry referencing callers SUNRPC: Fix congestion window race with disconnect SUNRPC: Don't try to parse incomplete RPC messages SUNRPC: Rename xdr_buf_read_netobj to xdr_buf_read_mic SUNRPC: Fix buffer handling of GSS MIC without slack SUNRPC: RPC level errors should always set task->tk_rpc_status SUNRPC: Don't receive TCP data into a request buffer that has been reset ... |
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Linus Torvalds | cbafe18c71 |
Merge branch 'akpm' (patches from Andrew)
Merge more updates from Andrew Morton: - almost all of the rest of -mm - various other subsystems Subsystems affected by this patch series: memcg, misc, core-kernel, lib, checkpatch, reiserfs, fat, fork, cpumask, kexec, uaccess, kconfig, kgdb, bug, ipc, lzo, kasan, madvise, cleanups, pagemap * emailed patches from Andrew Morton <akpm@linux-foundation.org>: (77 commits) arch/sparc/include/asm/pgtable_64.h: fix build mm: treewide: clarify pgtable_page_{ctor,dtor}() naming ntfs: remove (un)?likely() from IS_ERR() conditions IB/hfi1: remove unlikely() from IS_ERR*() condition xfs: remove unlikely() from WARN_ON() condition wimax/i2400m: remove unlikely() from WARN*() condition fs: remove unlikely() from WARN_ON() condition xen/events: remove unlikely() from WARN() condition checkpatch: check for nested (un)?likely() calls hexagon: drop empty and unused free_initrd_mem mm: factor out common parts between MADV_COLD and MADV_PAGEOUT mm: introduce MADV_PAGEOUT mm: change PAGEREF_RECLAIM_CLEAN with PAGE_REFRECLAIM mm: introduce MADV_COLD mm: untag user pointers in mmap/munmap/mremap/brk vfio/type1: untag user pointers in vaddr_get_pfn tee/shm: untag user pointers in tee_shm_register media/v4l2-core: untag user pointers in videobuf_dma_contig_user_get drm/radeon: untag user pointers in radeon_gem_userptr_ioctl drm/amdgpu: untag user pointers ... |
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Mark Rutland | b4ed71f557 |
mm: treewide: clarify pgtable_page_{ctor,dtor}() naming
The naming of pgtable_page_{ctor,dtor}() seems to have confused a few people, and until recently arm64 used these erroneously/pointlessly for other levels of page table. To make it incredibly clear that these only apply to the PTE level, and to align with the naming of pgtable_pmd_page_{ctor,dtor}(), let's rename them to pgtable_pte_page_{ctor,dtor}(). These changes were generated with the following shell script: ---- git grep -lw 'pgtable_page_.tor' | while read FILE; do sed -i '{s/pgtable_page_ctor/pgtable_pte_page_ctor/}' $FILE; sed -i '{s/pgtable_page_dtor/pgtable_pte_page_dtor/}' $FILE; done ---- ... with the documentation re-flowed to remain under 80 columns, and whitespace fixed up in macros to keep backslashes aligned. There should be no functional change as a result of this patch. Link: http://lkml.kernel.org/r/20190722141133.3116-1-mark.rutland@arm.com Signed-off-by: Mark Rutland <mark.rutland@arm.com> Reviewed-by: Mike Rapoport <rppt@linux.ibm.com> Acked-by: Geert Uytterhoeven <geert@linux-m68k.org> [m68k] Cc: Anshuman Khandual <anshuman.khandual@arm.com> Cc: Matthew Wilcox <willy@infradead.org> Cc: Michal Hocko <mhocko@suse.com> Cc: Yu Zhao <yuzhao@google.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> |
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Minchan Kim | 1a4e58cce8 |
mm: introduce MADV_PAGEOUT
When a process expects no accesses to a certain memory range for a long time, it could hint kernel that the pages can be reclaimed instantly but data should be preserved for future use. This could reduce workingset eviction so it ends up increasing performance. This patch introduces the new MADV_PAGEOUT hint to madvise(2) syscall. MADV_PAGEOUT can be used by a process to mark a memory range as not expected to be used for a long time so that kernel reclaims *any LRU* pages instantly. The hint can help kernel in deciding which pages to evict proactively. A note: It doesn't apply SWAP_CLUSTER_MAX LRU page isolation limit intentionally because it's automatically bounded by PMD size. If PMD size(e.g., 256) makes some trouble, we could fix it later by limit it to SWAP_CLUSTER_MAX[1]. - man-page material MADV_PAGEOUT (since Linux x.x) Do not expect access in the near future so pages in the specified regions could be reclaimed instantly regardless of memory pressure. Thus, access in the range after successful operation could cause major page fault but never lose the up-to-date contents unlike MADV_DONTNEED. Pages belonging to a shared mapping are only processed if a write access is allowed for the calling process. MADV_PAGEOUT cannot be applied to locked pages, Huge TLB pages, or VM_PFNMAP pages. [1] https://lore.kernel.org/lkml/20190710194719.GS29695@dhcp22.suse.cz/ [minchan@kernel.org: clear PG_active on MADV_PAGEOUT] Link: http://lkml.kernel.org/r/20190802200643.GA181880@google.com [akpm@linux-foundation.org: resolve conflicts with hmm.git] Link: http://lkml.kernel.org/r/20190726023435.214162-5-minchan@kernel.org Signed-off-by: Minchan Kim <minchan@kernel.org> Reported-by: kbuild test robot <lkp@intel.com> Acked-by: Michal Hocko <mhocko@suse.com> Cc: James E.J. Bottomley <James.Bottomley@HansenPartnership.com> Cc: Richard Henderson <rth@twiddle.net> Cc: Ralf Baechle <ralf@linux-mips.org> Cc: Chris Zankel <chris@zankel.net> Cc: Daniel Colascione <dancol@google.com> Cc: Dave Hansen <dave.hansen@intel.com> Cc: Hillf Danton <hdanton@sina.com> Cc: Joel Fernandes (Google) <joel@joelfernandes.org> Cc: Johannes Weiner <hannes@cmpxchg.org> Cc: Kirill A. Shutemov <kirill.shutemov@linux.intel.com> Cc: Oleksandr Natalenko <oleksandr@redhat.com> Cc: Shakeel Butt <shakeelb@google.com> Cc: Sonny Rao <sonnyrao@google.com> Cc: Suren Baghdasaryan <surenb@google.com> Cc: Tim Murray <timmurray@google.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> |
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Minchan Kim | 9c276cc65a |
mm: introduce MADV_COLD
Patch series "Introduce MADV_COLD and MADV_PAGEOUT", v7. - Background The Android terminology used for forking a new process and starting an app from scratch is a cold start, while resuming an existing app is a hot start. While we continually try to improve the performance of cold starts, hot starts will always be significantly less power hungry as well as faster so we are trying to make hot start more likely than cold start. To increase hot start, Android userspace manages the order that apps should be killed in a process called ActivityManagerService. ActivityManagerService tracks every Android app or service that the user could be interacting with at any time and translates that into a ranked list for lmkd(low memory killer daemon). They are likely to be killed by lmkd if the system has to reclaim memory. In that sense they are similar to entries in any other cache. Those apps are kept alive for opportunistic performance improvements but those performance improvements will vary based on the memory requirements of individual workloads. - Problem Naturally, cached apps were dominant consumers of memory on the system. However, they were not significant consumers of swap even though they are good candidate for swap. Under investigation, swapping out only begins once the low zone watermark is hit and kswapd wakes up, but the overall allocation rate in the system might trip lmkd thresholds and cause a cached process to be killed(we measured performance swapping out vs. zapping the memory by killing a process. Unsurprisingly, zapping is 10x times faster even though we use zram which is much faster than real storage) so kill from lmkd will often satisfy the high zone watermark, resulting in very few pages actually being moved to swap. - Approach The approach we chose was to use a new interface to allow userspace to proactively reclaim entire processes by leveraging platform information. This allowed us to bypass the inaccuracy of the kernel’s LRUs for pages that are known to be cold from userspace and to avoid races with lmkd by reclaiming apps as soon as they entered the cached state. Additionally, it could provide many chances for platform to use much information to optimize memory efficiency. To achieve the goal, the patchset introduce two new options for madvise. One is MADV_COLD which will deactivate activated pages and the other is MADV_PAGEOUT which will reclaim private pages instantly. These new options complement MADV_DONTNEED and MADV_FREE by adding non-destructive ways to gain some free memory space. MADV_PAGEOUT is similar to MADV_DONTNEED in a way that it hints the kernel that memory region is not currently needed and should be reclaimed immediately; MADV_COLD is similar to MADV_FREE in a way that it hints the kernel that memory region is not currently needed and should be reclaimed when memory pressure rises. This patch (of 5): When a process expects no accesses to a certain memory range, it could give a hint to kernel that the pages can be reclaimed when memory pressure happens but data should be preserved for future use. This could reduce workingset eviction so it ends up increasing performance. This patch introduces the new MADV_COLD hint to madvise(2) syscall. MADV_COLD can be used by a process to mark a memory range as not expected to be used in the near future. The hint can help kernel in deciding which pages to evict early during memory pressure. It works for every LRU pages like MADV_[DONTNEED|FREE]. IOW, It moves active file page -> inactive file LRU active anon page -> inacdtive anon LRU Unlike MADV_FREE, it doesn't move active anonymous pages to inactive file LRU's head because MADV_COLD is a little bit different symantic. MADV_FREE means it's okay to discard when the memory pressure because the content of the page is *garbage* so freeing such pages is almost zero overhead since we don't need to swap out and access afterward causes just minor fault. Thus, it would make sense to put those freeable pages in inactive file LRU to compete other used-once pages. It makes sense for implmentaion point of view, too because it's not swapbacked memory any longer until it would be re-dirtied. Even, it could give a bonus to make them be reclaimed on swapless system. However, MADV_COLD doesn't mean garbage so reclaiming them requires swap-out/in in the end so it's bigger cost. Since we have designed VM LRU aging based on cost-model, anonymous cold pages would be better to position inactive anon's LRU list, not file LRU. Furthermore, it would help to avoid unnecessary scanning if system doesn't have a swap device. Let's start simpler way without adding complexity at this moment. However, keep in mind, too that it's a caveat that workloads with a lot of pages cache are likely to ignore MADV_COLD on anonymous memory because we rarely age anonymous LRU lists. * man-page material MADV_COLD (since Linux x.x) Pages in the specified regions will be treated as less-recently-accessed compared to pages in the system with similar access frequencies. In contrast to MADV_FREE, the contents of the region are preserved regardless of subsequent writes to pages. MADV_COLD cannot be applied to locked pages, Huge TLB pages, or VM_PFNMAP pages. [akpm@linux-foundation.org: resolve conflicts with hmm.git] Link: http://lkml.kernel.org/r/20190726023435.214162-2-minchan@kernel.org Signed-off-by: Minchan Kim <minchan@kernel.org> Reported-by: kbuild test robot <lkp@intel.com> Acked-by: Michal Hocko <mhocko@suse.com> Acked-by: Johannes Weiner <hannes@cmpxchg.org> Cc: James E.J. Bottomley <James.Bottomley@HansenPartnership.com> Cc: Richard Henderson <rth@twiddle.net> Cc: Ralf Baechle <ralf@linux-mips.org> Cc: Chris Zankel <chris@zankel.net> Cc: Johannes Weiner <hannes@cmpxchg.org> Cc: Daniel Colascione <dancol@google.com> Cc: Dave Hansen <dave.hansen@intel.com> Cc: Hillf Danton <hdanton@sina.com> Cc: Joel Fernandes (Google) <joel@joelfernandes.org> Cc: Kirill A. Shutemov <kirill.shutemov@linux.intel.com> Cc: Oleksandr Natalenko <oleksandr@redhat.com> Cc: Shakeel Butt <shakeelb@google.com> Cc: Sonny Rao <sonnyrao@google.com> Cc: Suren Baghdasaryan <surenb@google.com> Cc: Tim Murray <timmurray@google.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> |
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Kees Cook | a44f71a9ab |
bug: move WARN_ON() "cut here" into exception handler
The original clean up of "cut here" missed the WARN_ON() case (that does
not have a printk message), which was fixed recently by adding an explicit
printk of "cut here". This had the downside of adding a printk() to every
WARN_ON() caller, which reduces the utility of using an instruction
exception to streamline the resulting code. By making this a new BUGFLAG,
all of these can be removed and "cut here" can be handled by the exception
handler.
This was very pronounced on PowerPC, but the effect can be seen on x86 as
well. The resulting text size of a defconfig build shows some small
savings from this patch:
text data bss dec hex filename
19691167 5134320 1646664 26472151 193eed7 vmlinux.before
19676362 5134260 1663048 26473670 193f4c6 vmlinux.after
This change also opens the door for creating something like BUG_MSG(),
where a custom printk() before issuing BUG(), without confusing the "cut
here" line.
Link: http://lkml.kernel.org/r/201908200943.601DD59DCE@keescook
Fixes:
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Kees Cook | 2da1ead4d5 |
bug: consolidate __WARN_FLAGS usage
Instead of having separate tests for __WARN_FLAGS, merge the two #ifdef blocks and replace the synonym WANT_WARN_ON_SLOWPATH macro. Link: http://lkml.kernel.org/r/20190819234111.9019-7-keescook@chromium.org Signed-off-by: Kees Cook <keescook@chromium.org> Cc: Arnd Bergmann <arnd@arndb.de> Cc: Borislav Petkov <bp@suse.de> Cc: Christophe Leroy <christophe.leroy@c-s.fr> Cc: Drew Davenport <ddavenport@chromium.org> Cc: Feng Tang <feng.tang@intel.com> Cc: Mauro Carvalho Chehab <mchehab+samsung@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Petr Mladek <pmladek@suse.com> Cc: "Steven Rostedt (VMware)" <rostedt@goodmis.org> Cc: YueHaibing <yuehaibing@huawei.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> |
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Kees Cook | d4bce140b4 |
bug: clean up helper macros to remove __WARN_TAINT()
In preparation for cleaning up "cut here" even more, this removes the __WARN_*TAINT() helpers, as they limit the ability to add new BUGFLAG_* flags to call sites. They are removed by expanding them into full __WARN_FLAGS() calls. Link: http://lkml.kernel.org/r/20190819234111.9019-6-keescook@chromium.org Signed-off-by: Kees Cook <keescook@chromium.org> Cc: Arnd Bergmann <arnd@arndb.de> Cc: Borislav Petkov <bp@suse.de> Cc: Christophe Leroy <christophe.leroy@c-s.fr> Cc: Drew Davenport <ddavenport@chromium.org> Cc: Feng Tang <feng.tang@intel.com> Cc: Mauro Carvalho Chehab <mchehab+samsung@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Petr Mladek <pmladek@suse.com> Cc: "Steven Rostedt (VMware)" <rostedt@goodmis.org> Cc: YueHaibing <yuehaibing@huawei.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> |
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Kees Cook | f2f84b05e0 |
bug: consolidate warn_slowpath_fmt() usage
Instead of having a separate helper for no printk output, just consolidate the logic into warn_slowpath_fmt(). Link: http://lkml.kernel.org/r/20190819234111.9019-4-keescook@chromium.org Signed-off-by: Kees Cook <keescook@chromium.org> Cc: Arnd Bergmann <arnd@arndb.de> Cc: Borislav Petkov <bp@suse.de> Cc: Christophe Leroy <christophe.leroy@c-s.fr> Cc: Drew Davenport <ddavenport@chromium.org> Cc: Feng Tang <feng.tang@intel.com> Cc: Mauro Carvalho Chehab <mchehab+samsung@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Petr Mladek <pmladek@suse.com> Cc: "Steven Rostedt (VMware)" <rostedt@goodmis.org> Cc: YueHaibing <yuehaibing@huawei.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> |
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Kees Cook | 89348fc314 |
bug: rename __WARN_printf_taint() to __WARN_printf()
This just renames the helper to improve readability. Link: http://lkml.kernel.org/r/20190819234111.9019-3-keescook@chromium.org Signed-off-by: Kees Cook <keescook@chromium.org> Cc: Arnd Bergmann <arnd@arndb.de> Cc: Borislav Petkov <bp@suse.de> Cc: Christophe Leroy <christophe.leroy@c-s.fr> Cc: Drew Davenport <ddavenport@chromium.org> Cc: Feng Tang <feng.tang@intel.com> Cc: Mauro Carvalho Chehab <mchehab+samsung@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Petr Mladek <pmladek@suse.com> Cc: "Steven Rostedt (VMware)" <rostedt@goodmis.org> Cc: YueHaibing <yuehaibing@huawei.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> |
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Kees Cook | ee8711336c |
bug: refactor away warn_slowpath_fmt_taint()
Patch series "Clean up WARN() "cut here" handling", v2. Christophe Leroy noticed that the fix for missing "cut here" in the WARN() case was adding explicit printk() calls instead of teaching the exception handler to add it. This refactors the bug/warn infrastructure to pass this information as a new BUGFLAG. Longer details repeated from the last patch in the series: bug: move WARN_ON() "cut here" into exception handler The original cleanup of "cut here" missed the WARN_ON() case (that does not have a printk message), which was fixed recently by adding an explicit printk of "cut here". This had the downside of adding a printk() to every WARN_ON() caller, which reduces the utility of using an instruction exception to streamline the resulting code. By making this a new BUGFLAG, all of these can be removed and "cut here" can be handled by the exception handler. This was very pronounced on PowerPC, but the effect can be seen on x86 as well. The resulting text size of a defconfig build shows some small savings from this patch: text data bss dec hex filename 19691167 5134320 1646664 26472151 193eed7 vmlinux.before 19676362 5134260 1663048 26473670 193f4c6 vmlinux.after This change also opens the door for creating something like BUG_MSG(), where a custom printk() before issuing BUG(), without confusing the "cut here" line. This patch (of 7): There's no reason to have specialized helpers for passing the warn taint down to __warn(). Consolidate and refactor helper macros, removing __WARN_printf() and warn_slowpath_fmt_taint(). Link: http://lkml.kernel.org/r/20190819234111.9019-2-keescook@chromium.org Signed-off-by: Kees Cook <keescook@chromium.org> Cc: Christophe Leroy <christophe.leroy@c-s.fr> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Christophe Leroy <christophe.leroy@c-s.fr> Cc: Drew Davenport <ddavenport@chromium.org> Cc: Arnd Bergmann <arnd@arndb.de> Cc: "Steven Rostedt (VMware)" <rostedt@goodmis.org> Cc: Feng Tang <feng.tang@intel.com> Cc: Petr Mladek <pmladek@suse.com> Cc: Mauro Carvalho Chehab <mchehab+samsung@kernel.org> Cc: Borislav Petkov <bp@suse.de> Cc: YueHaibing <yuehaibing@huawei.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> |
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Douglas Anderson | 7d92bda271 |
kgdb: don't use a notifier to enter kgdb at panic; call directly
Right now kgdb/kdb hooks up to debug panics by registering for the panic notifier. This works OK except that it means that kgdb/kdb gets called _after_ the CPUs in the system are taken offline. That means that if anything important was happening on those CPUs (like something that might have contributed to the panic) you can't debug them. Specifically I ran into a case where I got a panic because a task was "blocked for more than 120 seconds" which was detected on CPU 2. I nicely got shown stack traces in the kernel log for all CPUs including CPU 0, which was running 'PID: 111 Comm: kworker/0:1H' and was in the middle of __mmc_switch(). I then ended up at the kdb prompt where switched over to kgdb to try to look at local variables of the process on CPU 0. I found that I couldn't. Digging more, I found that I had no info on any tasks running on CPUs other than CPU 2 and that asking kdb for help showed me "Error: no saved data for this cpu". This was because all the CPUs were offline. Let's move the entry of kdb/kgdb to a direct call from panic() and stop using the generic notifier. Putting a direct call in allows us to order things more properly and it also doesn't seem like we're breaking any abstractions by calling into the debugger from the panic function. Daniel said: : This patch changes the way kdump and kgdb interact with each other. : However it would seem rather odd to have both tools simultaneously armed : and, even if they were, the user still has the option to use panic_timeout : to force a kdump to happen. Thus I think the change of order is : acceptable. Link: http://lkml.kernel.org/r/20190703170354.217312-1-dianders@chromium.org Signed-off-by: Douglas Anderson <dianders@chromium.org> Reviewed-by: Daniel Thompson <daniel.thompson@linaro.org> Cc: Jason Wessel <jason.wessel@windriver.com> Cc: Kees Cook <keescook@chromium.org> Cc: Borislav Petkov <bp@suse.de> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Feng Tang <feng.tang@intel.com> Cc: YueHaibing <yuehaibing@huawei.com> Cc: Sergey Senozhatsky <sergey.senozhatsky.work@gmail.com> Cc: "Steven Rostedt (VMware)" <rostedt@goodmis.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> |
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Kees Cook | 9dd819a151 |
uaccess: add missing __must_check attributes
The usercopy implementation comments describe that callers of the copy_*_user() family of functions must always have their return values checked. This can be enforced at compile time with __must_check, so add it where needed. Link: http://lkml.kernel.org/r/201908251609.ADAD5CAAC1@keescook Signed-off-by: Kees Cook <keescook@chromium.org> Cc: Alexander Viro <viro@zeniv.linux.org.uk> Cc: Dan Carpenter <dan.carpenter@oracle.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> |
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Vasily Gorbik | d5372c3913 |
kexec: restore arch_kexec_kernel_image_probe declaration
arch_kexec_kernel_image_probe function declaration has been removed by
commit
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Alexey Dobriyan | 2a4a4082cd |
cpumask: nicer for_each_cpumask_and() signature
Mask arguments can be swapped without changing anything. Make arguments names reflect that: #define for_each_cpu_and(cpu, mask1, mask2) Link: http://lkml.kernel.org/r/20190724183350.GA15041@avx2 Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com> Reviewed-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> |
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Sai Praneeth Prakhya | 8495f7e673 |
fork: improve error message for corrupted page tables
When a user process exits, the kernel cleans up the mm_struct of the user process and during cleanup, check_mm() checks the page tables of the user process for corruption (E.g: unexpected page flags set/cleared). For corrupted page tables, the error message printed by check_mm() isn't very clear as it prints the loop index instead of page table type (E.g: Resident file mapping pages vs Resident shared memory pages). The loop index in check_mm() is used to index rss_stat[] which represents individual memory type stats. Hence, instead of printing index, print memory type, thereby improving error message. Without patch: -------------- [ 204.836425] mm/pgtable-generic.c:29: bad p4d 0000000089eb4e92(800000025f941467) [ 204.836544] BUG: Bad rss-counter state mm:00000000f75895ea idx:0 val:2 [ 204.836615] BUG: Bad rss-counter state mm:00000000f75895ea idx:1 val:5 [ 204.836685] BUG: non-zero pgtables_bytes on freeing mm: 20480 With patch: ----------- [ 69.815453] mm/pgtable-generic.c:29: bad p4d 0000000084653642(800000025ca37467) [ 69.815872] BUG: Bad rss-counter state mm:00000000014a6c03 type:MM_FILEPAGES val:2 [ 69.815962] BUG: Bad rss-counter state mm:00000000014a6c03 type:MM_ANONPAGES val:5 [ 69.816050] BUG: non-zero pgtables_bytes on freeing mm: 20480 Also, change print function (from printk(KERN_ALERT, ..) to pr_alert()) so that it matches the other print statement. Link: http://lkml.kernel.org/r/da75b5153f617f4c5739c08ee6ebeb3d19db0fbc.1565123758.git.sai.praneeth.prakhya@intel.com Signed-off-by: Sai Praneeth Prakhya <sai.praneeth.prakhya@intel.com> Reviewed-by: Anshuman Khandual <anshuman.khandual@arm.com> Suggested-by: Dave Hansen <dave.hansen@intel.com> Acked-by: Michal Hocko <mhocko@suse.com> Acked-by: Vlastimil Babka <vbabka@suse.cz> Acked-by: Dave Hansen <dave.hansen@intel.com> Cc: Ingo Molnar <mingo@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> |
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Stephen Boyd | 091cb0994e |
lib/hexdump: make print_hex_dump_bytes() a nop on !DEBUG builds
I'm seeing a bunch of debug prints from a user of print_hex_dump_bytes() in my kernel logs, but I don't have CONFIG_DYNAMIC_DEBUG enabled nor do I have DEBUG defined in my build. The problem is that print_hex_dump_bytes() calls a wrapper function in lib/hexdump.c that calls print_hex_dump() with KERN_DEBUG level. There are three cases to consider here 1. CONFIG_DYNAMIC_DEBUG=y --> call dynamic_hex_dum() 2. CONFIG_DYNAMIC_DEBUG=n && DEBUG --> call print_hex_dump() 3. CONFIG_DYNAMIC_DEBUG=n && !DEBUG --> stub it out Right now, that last case isn't detected and we still call print_hex_dump() from the stub wrapper. Let's make print_hex_dump_bytes() only call print_hex_dump_debug() so that it works properly in all cases. Case #1, print_hex_dump_debug() calls dynamic_hex_dump() and we get same behavior. Case #2, print_hex_dump_debug() calls print_hex_dump() with KERN_DEBUG and we get the same behavior. Case #3, print_hex_dump_debug() is a nop, changing behavior to what we want, i.e. print nothing. Link: http://lkml.kernel.org/r/20190816235624.115280-1-swboyd@chromium.org Signed-off-by: Stephen Boyd <swboyd@chromium.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> |
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Qian Cai | d1a445d3b8 |
include/trace/events/writeback.h: fix -Wstringop-truncation warnings
There are many of those warnings. In file included from ./arch/powerpc/include/asm/paca.h:15, from ./arch/powerpc/include/asm/current.h:13, from ./include/linux/thread_info.h:21, from ./include/asm-generic/preempt.h:5, from ./arch/powerpc/include/generated/asm/preempt.h:1, from ./include/linux/preempt.h:78, from ./include/linux/spinlock.h:51, from fs/fs-writeback.c:19: In function 'strncpy', inlined from 'perf_trace_writeback_page_template' at ./include/trace/events/writeback.h:56:1: ./include/linux/string.h:260:9: warning: '__builtin_strncpy' specified bound 32 equals destination size [-Wstringop-truncation] return __builtin_strncpy(p, q, size); ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~ Fix it by using the new strscpy_pad() which was introduced in "lib/string: Add strscpy_pad() function" and will always be NUL-terminated instead of strncpy(). Also, change strlcpy() to use strscpy_pad() in this file for consistency. Link: http://lkml.kernel.org/r/1564075099-27750-1-git-send-email-cai@lca.pw Fixes: |
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Joe Perches | 917cda2790 |
kernel-doc: core-api: include string.h into core-api
core-api should show all the various string functions including the newly added stracpy and stracpy_pad. Miscellanea: o Update the Returns: value for strscpy o fix a defect with %NUL) [joe@perches.com: correct return of -E2BIG descriptions] Link: http://lkml.kernel.org/r/29f998b4c1a9d69fbeae70500ba0daa4b340c546.1563889130.git.joe@perches.com Link: http://lkml.kernel.org/r/224a6ebf39955f4107c0c376d66155d970e46733.1563841972.git.joe@perches.com Signed-off-by: Joe Perches <joe@perches.com> Reviewed-by: Kees Cook <keescook@chromium.org> Cc: Jonathan Corbet <corbet@lwn.net> Cc: Stephen Kitt <steve@sk2.org> Cc: Nitin Gote <nitin.r.gote@intel.com> Cc: Rasmus Villemoes <rasmus.villemoes@prevas.dk> Cc: Jann Horn <jannh@google.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> |
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Michel Lespinasse | 6d2052d188 |
augmented rbtree: rework the RB_DECLARE_CALLBACKS macro definition
Change the definition of the RBCOMPUTE function. The propagate callback repeatedly calls RBCOMPUTE as it moves from leaf to root. it wants to stop recomputing once the augmented subtree information doesn't change. This was previously checked using the == operator, but that only works when the augmented subtree information is a scalar field. This commit modifies the RBCOMPUTE function so that it now sets the augmented subtree information instead of returning it, and returns a boolean value indicating if the propagate callback should stop. The motivation for this change is that I want to introduce augmented rbtree uses where the augmented data for the subtree is a struct instead of a scalar. Link: http://lkml.kernel.org/r/20190703040156.56953-4-walken@google.com Signed-off-by: Michel Lespinasse <walken@google.com> Acked-by: Peter Zijlstra (Intel) <peterz@infradead.org> Cc: David Howells <dhowells@redhat.com> Cc: Davidlohr Bueso <dbueso@suse.de> Cc: Uladzislau Rezki <urezki@gmail.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> |
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Michel Lespinasse | 315cc066b8 |
augmented rbtree: add new RB_DECLARE_CALLBACKS_MAX macro
Add RB_DECLARE_CALLBACKS_MAX, which generates augmented rbtree callbacks for the case where the augmented value is a scalar whose definition follows a max(f(node)) pattern. This actually covers all present uses of RB_DECLARE_CALLBACKS, and saves some (source) code duplication in the various RBCOMPUTE function definitions. [walken@google.com: fix mm/vmalloc.c] Link: http://lkml.kernel.org/r/CANN689FXgK13wDYNh1zKxdipeTuALG4eKvKpsdZqKFJ-rvtGiQ@mail.gmail.com [walken@google.com: re-add check to check_augmented()] Link: http://lkml.kernel.org/r/20190727022027.GA86863@google.com Link: http://lkml.kernel.org/r/20190703040156.56953-3-walken@google.com Signed-off-by: Michel Lespinasse <walken@google.com> Acked-by: Peter Zijlstra (Intel) <peterz@infradead.org> Cc: David Howells <dhowells@redhat.com> Cc: Davidlohr Bueso <dbueso@suse.de> Cc: Uladzislau Rezki <urezki@gmail.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> |
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Michel Lespinasse | 444b8a83f1 |
augmented rbtree: add comments for RB_DECLARE_CALLBACKS macro
Patch series "make RB_DECLARE_CALLBACKS more generic", v3. These changes are intended to make the RB_DECLARE_CALLBACKS macro more generic (allowing the aubmented subtree information to be a struct instead of a scalar). I have verified the compiled lib/interval_tree.o and mm/mmap.o files to check that they didn't change. This held as expected for interval_tree.o; mmap.o did have some changes which could be reverted by marking __vma_link_rb as noinline. I did not add such a change to the patchset; I felt it was reasonable enough to leave the inlining decision up to the compiler. This patch (of 3): Add a short comment summarizing the arguments to RB_DECLARE_CALLBACKS. The arguments are also now capitalized. This copies the style of the INTERVAL_TREE_DEFINE macro. No functional changes in this commit, only comments and capitalization. Link: http://lkml.kernel.org/r/20190703040156.56953-2-walken@google.com Signed-off-by: Michel Lespinasse <walken@google.com> Acked-by: Davidlohr Bueso <dbueso@suse.de> Acked-by: Peter Zijlstra (Intel) <peterz@infradead.org> Cc: David Howells <dhowells@redhat.com> Cc: Uladzislau Rezki <urezki@gmail.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> |
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Masahiro Yamada | 541be05095 |
linux/coff.h: add include guard
Add a header include guard just in case. My motivation is to allow Kbuild to detect missing include guard: https://patchwork.kernel.org/patch/11063011/ Before I enable this checker I want to fix as many headers as possible. Link: http://lkml.kernel.org/r/20190728154728.11126-1-yamada.masahiro@socionext.com Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> |
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Linus Torvalds | f41def3971 |
The highlights are:
- automatic recovery of a blacklisted filesystem session (Zheng Yan). This is disabled by default and can be enabled by mounting with the new "recover_session=clean" option. - serialize buffered reads and O_DIRECT writes (Jeff Layton). Care is taken to avoid serializing O_DIRECT reads and writes with each other, this is based on the exclusion scheme from NFS. - handle large osdmaps better in the face of fragmented memory (myself) - don't limit what security.* xattrs can be get or set (Jeff Layton). We were overly restrictive here, unnecessarily preventing things like file capability sets stored in security.capability from working. - allow copy_file_range() within the same inode and across different filesystems within the same cluster (Luis Henriques) -----BEGIN PGP SIGNATURE----- iQFHBAABCAAxFiEEydHwtzie9C7TfviiSn/eOAIR84sFAl2LoD8THGlkcnlvbW92 QGdtYWlsLmNvbQAKCRBKf944AhHzixRYB/9H5S4fif8Pn9eiXkIJiT9UZR/o7S1k ikfQNPeDxlBLKnoZXpDp2HqCu1/YuCcJ0zpZzPGGrKECZb7r+NaayxhmEXAZ+Vsg YwsO3eNHBbb58pe9T4oiHp19sflwcTOeNwg8wlvmvrgfBupFz2pU8Xm72EdFyoYm tP0QNTOCAuQK3pJcgozaptAO1TzBL3LomyVM0YzAKcumgMg47zALpaSLWJLGtDLM 5+5WLvcVfBGLVv60h4B62ldS39eBxqTsFodcRMUaqAsnhLK70HVfKlwR3GgtZggr PDqbsuIfw/O3b65U2XDKZt1P9dyG3OE/ucueduXUxJPYNGmooEE+PpE+ =DRVP -----END PGP SIGNATURE----- Merge tag 'ceph-for-5.4-rc1' of git://github.com/ceph/ceph-client Pull ceph updates from Ilya Dryomov: "The highlights are: - automatic recovery of a blacklisted filesystem session (Zheng Yan). This is disabled by default and can be enabled by mounting with the new "recover_session=clean" option. - serialize buffered reads and O_DIRECT writes (Jeff Layton). Care is taken to avoid serializing O_DIRECT reads and writes with each other, this is based on the exclusion scheme from NFS. - handle large osdmaps better in the face of fragmented memory (myself) - don't limit what security.* xattrs can be get or set (Jeff Layton). We were overly restrictive here, unnecessarily preventing things like file capability sets stored in security.capability from working. - allow copy_file_range() within the same inode and across different filesystems within the same cluster (Luis Henriques)" * tag 'ceph-for-5.4-rc1' of git://github.com/ceph/ceph-client: (41 commits) ceph: call ceph_mdsc_destroy from destroy_fs_client libceph: use ceph_kvmalloc() for osdmap arrays libceph: avoid a __vmalloc() deadlock in ceph_kvmalloc() ceph: allow object copies across different filesystems in the same cluster ceph: include ceph_debug.h in cache.c ceph: move static keyword to the front of declarations rbd: pull rbd_img_request_create() dout out into the callers ceph: reconnect connection if session hang in opening state libceph: drop unused con parameter of calc_target() ceph: use release_pages() directly rbd: fix response length parameter for encoded strings ceph: allow arbitrary security.* xattrs ceph: only set CEPH_I_SEC_INITED if we got a MAC label ceph: turn ceph_security_invalidate_secctx into static inline ceph: add buffered/direct exclusionary locking for reads and writes libceph: handle OSD op ceph_pagelist_append() errors ceph: don't return a value from void function ceph: don't freeze during write page faults ceph: update the mtime when truncating up ceph: fix indentation in __get_snap_name() ... |
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Linus Torvalds | 7b1373dd6e |
fuse update for 5.4
-----BEGIN PGP SIGNATURE----- iHUEABYIAB0WIQSQHSd0lITzzeNWNm3h3BK/laaZPAUCXYod6wAKCRDh3BK/laaZ PG3fAP9WXuvUeYh3X7ThQPa2D33VCIMJRd6t+1TVSSc/H8P3dAD/ehN5HIWjnmzz iZFc3zDtO9UCJUe23IZomblxOQbu6Qk= =I0S2 -----END PGP SIGNATURE----- Merge tag 'fuse-update-5.4' of git://git.kernel.org/pub/scm/linux/kernel/git/mszeredi/fuse Pull fuse updates from Miklos Szeredi: - Continue separating the transport (user/kernel communication) and the filesystem layers of fuse. Getting rid of most layering violations will allow for easier cleanup and optimization later on. - Prepare for the addition of the virtio-fs filesystem. The actual filesystem will be introduced by a separate pull request. - Convert to new mount API. - Various fixes, optimizations and cleanups. * tag 'fuse-update-5.4' of git://git.kernel.org/pub/scm/linux/kernel/git/mszeredi/fuse: (55 commits) fuse: Make fuse_args_to_req static fuse: fix memleak in cuse_channel_open fuse: fix beyond-end-of-page access in fuse_parse_cache() fuse: unexport fuse_put_request fuse: kmemcg account fs data fuse: on 64-bit store time in d_fsdata directly fuse: fix missing unlock_page in fuse_writepage() fuse: reserve byteswapped init opcodes fuse: allow skipping control interface and forced unmount fuse: dissociate DESTROY from fuseblk fuse: delete dentry if timeout is zero fuse: separate fuse device allocation and installation in fuse_conn fuse: add fuse_iqueue_ops callbacks fuse: extract fuse_fill_super_common() fuse: export fuse_dequeue_forget() function fuse: export fuse_get_unique() fuse: export fuse_send_init_request() fuse: export fuse_len_args() fuse: export fuse_end_request() fuse: fix request limit ... |
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Linus Torvalds | 4ef5b13a29 |
New code for 5.4:
- Report both io errors and short io results to the directio endio handler. - Allow directio callers to pass an ops structure to iomap_dio_rw. -----BEGIN PGP SIGNATURE----- iQIzBAABCgAdFiEEUzaAxoMeQq6m2jMV+H93GTRKtOsFAl2EQBwACgkQ+H93GTRK tOvZ0w//R00Dya3pZmO+HQX/Kovo/AOKCct/gPaLvRf4DVvWZ3ZH5lPtDUSKCHBV Pw+potTuabwtp//mZrQ84ZMoQYOmxBmxchquJ2L49qWT/mZ1BDqBA2sxQOCehffO Dlv715eOPVhkVHOEAHv+BsatxlFDkuKgGcwUqxE4LNHWGrvmjm6rBWPCnxQMTwX9 BhGo/0WG6D0leWFSMoUIpcD4Oj302/O43RX4lJsyl0Jd5pKJD/RFtaKqwIeE+pj9 36MnoQYtT5e9BTm1/zzHRVpGgLDDWTY+IClgZNlZprU/Em+TtOGMWitWzob3wWcU QHj5bJ9NiWBT6QJ192i0+I0thSTwW/peOAJrkBOW3YhBkH3UIKSzaPiwCBoSEUKS fuIOJkRHFW7HTjKSw6wUCJJ6ShD+rNPOoaJ9Ivzz7x2HGEqb1al3EIumu6oDJgyq BdnLEecN/JSxPnakpSGAnvlCjZiYbJ95E0JfapzMy7HYpMXfbzZZ4JO9Ld0hQflR sMrGwL82tqE9ish1yRr+2nNEY5PqVJqV0XXU3dZz3HVknNuAvqrqXDXgIZT142zS s9vGAW+2XphyUKHH9pImQKw142n2xiZK+Pd2AuiO4I06E0EkAvN/n9CN7oJ4Cr4F z9rQKNXNx8OSjFtryYe6+IzQ0qQtl2OP7o88K91jYArKP17D8ds= =zkFp -----END PGP SIGNATURE----- Merge tag 'iomap-5.4-merge-6' of git://git.kernel.org/pub/scm/fs/xfs/xfs-linux Pull iomap updates from Darrick Wong: "After last week's failed pull request attempt, I scuttled everything in the branch except for the directio endio api changes, which were trivial. Everything else will simply have to wait for the next cycle. Summary: - Report both io errors and short io results to the directio endio handler. - Allow directio callers to pass an ops structure to iomap_dio_rw" * tag 'iomap-5.4-merge-6' of git://git.kernel.org/pub/scm/fs/xfs/xfs-linux: iomap: move the iomap_dio_rw ->end_io callback into a structure iomap: split size and error for iomap_dio_rw ->end_io |