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Author SHA1 Message Date
Linus Torvalds b7a7d1c1ec DMA mapping updates for 5.1 
- add debugfs support for dumping dma-debug information (Corentin Labbe)
  - Kconfig cleanups (Andy Shevchenko and me)
  - debugfs cleanups (Greg Kroah-Hartman)
  - improve dma_map_resource and use it in the media code
  - arch_setup_dma_ops / arch_teardown_dma_ops cleanups
  - various small cleanups and improvements for the per-device coherent
    allocator
  - make the DMA mask an upper bound and don't fail "too large" dma mask
    in the remaning two architectures - this will allow big driver
    cleanups in the following merge windows
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Merge tag 'dma-mapping-5.1' of git://git.infradead.org/users/hch/dma-mapping

Pull DMA mapping updates from Christoph Hellwig:

 - add debugfs support for dumping dma-debug information (Corentin
   Labbe)

 - Kconfig cleanups (Andy Shevchenko and me)

 - debugfs cleanups (Greg Kroah-Hartman)

 - improve dma_map_resource and use it in the media code

 - arch_setup_dma_ops / arch_teardown_dma_ops cleanups

 - various small cleanups and improvements for the per-device coherent
   allocator

 - make the DMA mask an upper bound and don't fail "too large" dma mask
   in the remaning two architectures - this will allow big driver
   cleanups in the following merge windows

* tag 'dma-mapping-5.1' of git://git.infradead.org/users/hch/dma-mapping: (21 commits)
  Documentation/DMA-API-HOWTO: update dma_mask sections
  sparc64/pci_sun4v: allow large DMA masks
  sparc64/iommu: allow large DMA masks
  sparc64: refactor the ali DMA quirk
  ccio: allow large DMA masks
  dma-mapping: remove the DMA_MEMORY_EXCLUSIVE flag
  dma-mapping: remove dma_mark_declared_memory_occupied
  dma-mapping: move CONFIG_DMA_CMA to kernel/dma/Kconfig
  dma-mapping: improve selection of dma_declare_coherent availability
  dma-mapping: remove an incorrect __iommem annotation
  of: select OF_RESERVED_MEM automatically
  device.h: dma_mem is only needed for HAVE_GENERIC_DMA_COHERENT
  mfd/sm501: depend on HAS_DMA
  dma-mapping: add a kconfig symbol for arch_teardown_dma_ops availability
  dma-mapping: add a kconfig symbol for arch_setup_dma_ops availability
  dma-mapping: move debug configuration options to kernel/dma
  dma-debug: add dumping facility via debugfs
  dma: debug: no need to check return value of debugfs_create functions
  videobuf2: replace a layering violation with dma_map_resource
  dma-mapping: don't BUG when calling dma_map_resource on RAM
  ...
 2019-03-10 11:54:48 -07:00
Darrick J. Wong f51fac6892 xfs: zero initialize highstale and lowstale in xfs_dir2_leaf_addname 
Smatch complains about the following:

fs/xfs/libxfs/xfs_dir2_leaf.c:848 xfs_dir2_leaf_addname() error:
uninitialized symbol 'lowstale'.

fs/xfs/libxfs/xfs_dir2_leaf.c:849 xfs_dir2_leaf_addname() error:
uninitialized symbol 'highstale'.

I don't think there's any incorrect behavior associated with the
uninitialized variable, but as the author of the previous zero-init
patch points out, it's best not to be passing around pointers to
uninitialized stack areas.

Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
Reviewed-by: Nathan Chancellor <natechancellor@gmail.com>
Reviewed-by: Allison Henderson <allison.henderson@oracle.com>
Reviewed-by: Bill O'Donnell <billodo@redhat.com>
 2019-03-10 11:41:31 -07:00
Enrico Weigelt, metux IT consult dc5c37736d drivers: ide: Kconfig: pedantic formatting 
Formatting of Kconfig files doesn't look so pretty, so just
take a damp cloth and clean it up.

Signed-off-by: Enrico Weigelt, metux IT consult <info@metux.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
 2019-03-10 11:12:38 -07:00
Gustavo A. R. Silva fbf68b01a8 ide: mark expected switch fall-through 
In preparation to enabling -Wimplicit-fallthrough, mark switch
cases where we are expecting to fall through.

This patch fixes the following warning:

drivers/ide/ide-floppy.c: In function ‘ide_floppy_get_capacity’:
drivers/ide/ide-floppy.c:424:7: warning: this statement may fall through [-Wimplicit-fallthrough=]
    if (!(drive->atapi_flags & IDE_AFLAG_CLIK_DRIVE))
       ^
drivers/ide/ide-floppy.c:431:3: note: here
   case CAPACITY_CURRENT:
   ^~~~

Warning level 3 was used: -Wimplicit-fallthrough=3

Notice that, in this particular case, the code comment is modified
in accordance with what GCC is expecting to find.

This patch is part of the ongoing efforts to enable
-Wimplicit-fallthrough.

Signed-off-by: Gustavo A. R. Silva <gustavo@embeddedor.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
 2019-03-10 11:12:27 -07:00
Gustavo A. R. Silva 498b58944c ide: hpt366: mark expected switch fall-throughs 
In preparation to enabling -Wimplicit-fallthrough, mark switch cases
where we are expecting to fall through.

Notice that, in this particular case, I removed the "else: "
part from the comment. As we are now using Warning level 3:
-Wimplicit-fallthrough=3, this is what GCC is expecting to
find.

Signed-off-by: Gustavo A. R. Silva <gustavo@embeddedor.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
 2019-03-10 11:12:24 -07:00
Trond Myklebust 4d6c671ace SUNRPC: Take the transport send lock before binding+connecting 
Before trying to bind a port, ensure we grab the send lock to
ensure that we don't change the port while another task is busy
transmitting requests.
The connect code already takes the send lock in xprt_connect(),
but it is harmless to take it before that.

Signed-off-by: Trond Myklebust <trond.myklebust@hammerspace.com>
 2019-03-10 14:08:19 -04:00
Trond Myklebust 009a82f643 SUNRPC: Micro-optimise when the task is known not to be sleeping 
In cases where we know the task is not sleeping, try to optimise
away the indirect call to task->tk_action() by replacing it with
a direct call.
Only change tail calls, to allow gcc to perform tail call
elimination.

Signed-off-by: Trond Myklebust <trond.myklebust@hammerspace.com>
 2019-03-10 14:08:19 -04:00
Eric Dumazet 2a5ff07a0e gro_cells: make sure device is up in gro_cells_receive() 
We keep receiving syzbot reports [1] that show that tunnels do not play
the rcu/IFF_UP rules properly.

At device dismantle phase, gro_cells_destroy() will be called
only after a full rcu grace period is observed after IFF_UP
has been cleared.

This means that IFF_UP needs to be tested before queueing packets
into netif_rx() or gro_cells.

This patch implements the test in gro_cells_receive() because
too many callers do not seem to bother enough.

[1]
BUG: unable to handle kernel paging request at fffff4ca0b9ffffe
PGD 0 P4D 0
Oops: 0000 [#1] PREEMPT SMP KASAN
CPU: 0 PID: 21 Comm: kworker/u4:1 Not tainted 5.0.0+ #97
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Workqueue: netns cleanup_net
RIP: 0010:__skb_unlink include/linux/skbuff.h:1929 [inline]
RIP: 0010:__skb_dequeue include/linux/skbuff.h:1945 [inline]
RIP: 0010:__skb_queue_purge include/linux/skbuff.h:2656 [inline]
RIP: 0010:gro_cells_destroy net/core/gro_cells.c:89 [inline]
RIP: 0010:gro_cells_destroy+0x19d/0x360 net/core/gro_cells.c:78
Code: 03 42 80 3c 20 00 0f 85 53 01 00 00 48 8d 7a 08 49 8b 47 08 49 c7 07 00 00 00 00 48 89 f9 49 c7 47 08 00 00 00 00 48 c1 e9 03 <42> 80 3c 21 00 0f 85 10 01 00 00 48 89 c1 48 89 42 08 48 c1 e9 03
RSP: 0018:ffff8880aa3f79a8 EFLAGS: 00010a02
RAX: 00ffffffffffffe8 RBX: ffffe8ffffc64b70 RCX: 1ffff8ca0b9ffffe
RDX: ffffc6505cffffe8 RSI: ffffffff858410ca RDI: ffffc6505cfffff0
RBP: ffff8880aa3f7a08 R08: ffff8880aa3e8580 R09: fffffbfff1263645
R10: fffffbfff1263644 R11: ffffffff8931b223 R12: dffffc0000000000
R13: 0000000000000000 R14: ffffe8ffffc64b80 R15: ffffe8ffffc64b75
kobject: 'loop2' (000000004bd7d84a): kobject_uevent_env
FS:  0000000000000000(0000) GS:ffff8880ae800000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: fffff4ca0b9ffffe CR3: 0000000094941000 CR4: 00000000001406f0
Call Trace:
kobject: 'loop2' (000000004bd7d84a): fill_kobj_path: path = '/devices/virtual/block/loop2'
 ip_tunnel_dev_free+0x19/0x60 net/ipv4/ip_tunnel.c:1010
 netdev_run_todo+0x51c/0x7d0 net/core/dev.c:8970
 rtnl_unlock+0xe/0x10 net/core/rtnetlink.c:116
 ip_tunnel_delete_nets+0x423/0x5f0 net/ipv4/ip_tunnel.c:1124
 vti_exit_batch_net+0x23/0x30 net/ipv4/ip_vti.c:495
 ops_exit_list.isra.0+0x105/0x160 net/core/net_namespace.c:156
 cleanup_net+0x3fb/0x960 net/core/net_namespace.c:551
 process_one_work+0x98e/0x1790 kernel/workqueue.c:2173
 worker_thread+0x98/0xe40 kernel/workqueue.c:2319
 kthread+0x357/0x430 kernel/kthread.c:246
 ret_from_fork+0x3a/0x50 arch/x86/entry/entry_64.S:352
Modules linked in:
CR2: fffff4ca0b9ffffe
   [ end trace 513fc9c1338d1cb3 ]
RIP: 0010:__skb_unlink include/linux/skbuff.h:1929 [inline]
RIP: 0010:__skb_dequeue include/linux/skbuff.h:1945 [inline]
RIP: 0010:__skb_queue_purge include/linux/skbuff.h:2656 [inline]
RIP: 0010:gro_cells_destroy net/core/gro_cells.c:89 [inline]
RIP: 0010:gro_cells_destroy+0x19d/0x360 net/core/gro_cells.c:78
Code: 03 42 80 3c 20 00 0f 85 53 01 00 00 48 8d 7a 08 49 8b 47 08 49 c7 07 00 00 00 00 48 89 f9 49 c7 47 08 00 00 00 00 48 c1 e9 03 <42> 80 3c 21 00 0f 85 10 01 00 00 48 89 c1 48 89 42 08 48 c1 e9 03
RSP: 0018:ffff8880aa3f79a8 EFLAGS: 00010a02
RAX: 00ffffffffffffe8 RBX: ffffe8ffffc64b70 RCX: 1ffff8ca0b9ffffe
RDX: ffffc6505cffffe8 RSI: ffffffff858410ca RDI: ffffc6505cfffff0
RBP: ffff8880aa3f7a08 R08: ffff8880aa3e8580 R09: fffffbfff1263645
R10: fffffbfff1263644 R11: ffffffff8931b223 R12: dffffc0000000000
kobject: 'loop3' (00000000e4ee57a6): kobject_uevent_env
R13: 0000000000000000 R14: ffffe8ffffc64b80 R15: ffffe8ffffc64b75
FS:  0000000000000000(0000) GS:ffff8880ae800000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: fffff4ca0b9ffffe CR3: 0000000094941000 CR4: 00000000001406f0

Fixes: c9e6bc644e ("net: add gro_cells infrastructure")
Signed-off-by: Eric Dumazet <edumazet@google.com>
Reported-by: syzbot <syzkaller@googlegroups.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
 2019-03-10 11:07:14 -07:00
Eric Dumazet 59cbf56fcd vxlan: test dev->flags & IFF_UP before calling gro_cells_receive() 
Same reasons than the ones explained in commit 4179cb5a4c
("vxlan: test dev->flags & IFF_UP before calling netif_rx()")

netif_rx() or gro_cells_receive() must be called under a strict contract.

At device dismantle phase, core networking clears IFF_UP
and flush_all_backlogs() is called after rcu grace period
to make sure no incoming packet might be in a cpu backlog
and still referencing the device.

A similar protocol is used for gro_cells infrastructure, as
gro_cells_destroy() will be called only after a full rcu
grace period is observed after IFF_UP has been cleared.

Most drivers call netif_rx() from their interrupt handler,
and since the interrupts are disabled at device dismantle,
netif_rx() does not have to check dev->flags & IFF_UP

Virtual drivers do not have this guarantee, and must
therefore make the check themselves.

Otherwise we risk use-after-free and/or crashes.

Fixes: d342894c5d ("vxlan: virtual extensible lan")
Signed-off-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
 2019-03-10 11:05:52 -07:00
Eric Dumazet 95d6ebd53c net/x25: fix use-after-free in x25_device_event() 
In case of failure x25_connect() does a x25_neigh_put(x25->neighbour)
but forgets to clear x25->neighbour pointer, thus triggering use-after-free.

Since the socket is visible in x25_list, we need to hold x25_list_lock
to protect the operation.

syzbot report :

BUG: KASAN: use-after-free in x25_kill_by_device net/x25/af_x25.c:217 [inline]
BUG: KASAN: use-after-free in x25_device_event+0x296/0x2b0 net/x25/af_x25.c:252
Read of size 8 at addr ffff8880a030edd0 by task syz-executor003/7854

CPU: 0 PID: 7854 Comm: syz-executor003 Not tainted 5.0.0+ #97
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
 print_address_description.cold+0x7c/0x20d mm/kasan/report.c:187
 kasan_report.cold+0x1b/0x40 mm/kasan/report.c:317
 __asan_report_load8_noabort+0x14/0x20 mm/kasan/generic_report.c:135
 x25_kill_by_device net/x25/af_x25.c:217 [inline]
 x25_device_event+0x296/0x2b0 net/x25/af_x25.c:252
 notifier_call_chain+0xc7/0x240 kernel/notifier.c:93
 __raw_notifier_call_chain kernel/notifier.c:394 [inline]
 raw_notifier_call_chain+0x2e/0x40 kernel/notifier.c:401
 call_netdevice_notifiers_info+0x3f/0x90 net/core/dev.c:1739
 call_netdevice_notifiers_extack net/core/dev.c:1751 [inline]
 call_netdevice_notifiers net/core/dev.c:1765 [inline]
 __dev_notify_flags+0x1e9/0x2c0 net/core/dev.c:7607
 dev_change_flags+0x10d/0x170 net/core/dev.c:7643
 dev_ifsioc+0x2b0/0x940 net/core/dev_ioctl.c:237
 dev_ioctl+0x1b8/0xc70 net/core/dev_ioctl.c:488
 sock_do_ioctl+0x1bd/0x300 net/socket.c:995
 sock_ioctl+0x32b/0x610 net/socket.c:1096
 vfs_ioctl fs/ioctl.c:46 [inline]
 file_ioctl fs/ioctl.c:509 [inline]
 do_vfs_ioctl+0xd6e/0x1390 fs/ioctl.c:696
 ksys_ioctl+0xab/0xd0 fs/ioctl.c:713
 __do_sys_ioctl fs/ioctl.c:720 [inline]
 __se_sys_ioctl fs/ioctl.c:718 [inline]
 __x64_sys_ioctl+0x73/0xb0 fs/ioctl.c:718
 do_syscall_64+0x103/0x610 arch/x86/entry/common.c:290
 entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x4467c9
Code: e8 0c e8 ff ff 48 83 c4 18 c3 0f 1f 80 00 00 00 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 0f 83 5b 07 fc ff c3 66 2e 0f 1f 84 00 00 00 00
RSP: 002b:00007fdbea222d98 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 00000000006dbc58 RCX: 00000000004467c9
RDX: 0000000020000340 RSI: 0000000000008914 RDI: 0000000000000003
RBP: 00000000006dbc50 R08: 00007fdbea223700 R09: 0000000000000000
R10: 00007fdbea223700 R11: 0000000000000246 R12: 00000000006dbc5c
R13: 6000030030626669 R14: 0000000000000000 R15: 0000000030626669

Allocated by task 7843:
 save_stack+0x45/0xd0 mm/kasan/common.c:73
 set_track mm/kasan/common.c:85 [inline]
 __kasan_kmalloc mm/kasan/common.c:495 [inline]
 __kasan_kmalloc.constprop.0+0xcf/0xe0 mm/kasan/common.c:468
 kasan_kmalloc+0x9/0x10 mm/kasan/common.c:509
 kmem_cache_alloc_trace+0x151/0x760 mm/slab.c:3615
 kmalloc include/linux/slab.h:545 [inline]
 x25_link_device_up+0x46/0x3f0 net/x25/x25_link.c:249
 x25_device_event+0x116/0x2b0 net/x25/af_x25.c:242
 notifier_call_chain+0xc7/0x240 kernel/notifier.c:93
 __raw_notifier_call_chain kernel/notifier.c:394 [inline]
 raw_notifier_call_chain+0x2e/0x40 kernel/notifier.c:401
 call_netdevice_notifiers_info+0x3f/0x90 net/core/dev.c:1739
 call_netdevice_notifiers_extack net/core/dev.c:1751 [inline]
 call_netdevice_notifiers net/core/dev.c:1765 [inline]
 __dev_notify_flags+0x121/0x2c0 net/core/dev.c:7605
 dev_change_flags+0x10d/0x170 net/core/dev.c:7643
 dev_ifsioc+0x2b0/0x940 net/core/dev_ioctl.c:237
 dev_ioctl+0x1b8/0xc70 net/core/dev_ioctl.c:488
 sock_do_ioctl+0x1bd/0x300 net/socket.c:995
 sock_ioctl+0x32b/0x610 net/socket.c:1096
 vfs_ioctl fs/ioctl.c:46 [inline]
 file_ioctl fs/ioctl.c:509 [inline]
 do_vfs_ioctl+0xd6e/0x1390 fs/ioctl.c:696
 ksys_ioctl+0xab/0xd0 fs/ioctl.c:713
 __do_sys_ioctl fs/ioctl.c:720 [inline]
 __se_sys_ioctl fs/ioctl.c:718 [inline]
 __x64_sys_ioctl+0x73/0xb0 fs/ioctl.c:718
 do_syscall_64+0x103/0x610 arch/x86/entry/common.c:290
 entry_SYSCALL_64_after_hwframe+0x49/0xbe

Freed by task 7865:
 save_stack+0x45/0xd0 mm/kasan/common.c:73
 set_track mm/kasan/common.c:85 [inline]
 __kasan_slab_free+0x102/0x150 mm/kasan/common.c:457
 kasan_slab_free+0xe/0x10 mm/kasan/common.c:465
 __cache_free mm/slab.c:3494 [inline]
 kfree+0xcf/0x230 mm/slab.c:3811
 x25_neigh_put include/net/x25.h:253 [inline]
 x25_connect+0x8d8/0xde0 net/x25/af_x25.c:824
 __sys_connect+0x266/0x330 net/socket.c:1685
 __do_sys_connect net/socket.c:1696 [inline]
 __se_sys_connect net/socket.c:1693 [inline]
 __x64_sys_connect+0x73/0xb0 net/socket.c:1693
 do_syscall_64+0x103/0x610 arch/x86/entry/common.c:290
 entry_SYSCALL_64_after_hwframe+0x49/0xbe

The buggy address belongs to the object at ffff8880a030edc0
 which belongs to the cache kmalloc-256 of size 256
The buggy address is located 16 bytes inside of
 256-byte region [ffff8880a030edc0, ffff8880a030eec0)
The buggy address belongs to the page:
page:ffffea000280c380 count:1 mapcount:0 mapping:ffff88812c3f07c0 index:0x0
flags: 0x1fffc0000000200(slab)
raw: 01fffc0000000200 ffffea0002806788 ffffea00027f0188 ffff88812c3f07c0
raw: 0000000000000000 ffff8880a030e000 000000010000000c 0000000000000000
page dumped because: kasan: bad access detected

Signed-off-by: Eric Dumazet <edumazet@google.com>
Reported-by: syzbot+04babcefcd396fabec37@syzkaller.appspotmail.com
Cc: andrew hendry <andrew.hendry@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
 2019-03-10 11:03:59 -07:00
Linus Torvalds 065b6c4c91 Devicetree updates for v5.1: 
- Fix a unittest failure on UML. Preparation for converting to
   kunit test framework.
 
 - Add annotations to dtx_diff output
 
 - Fix unittest reporting of expected error
 
 - Move DMA configuration for virtual devices into the driver that
   needs it (s5p-mfc)
 
 - Vendor prefixes for feiyang and techstar
 
 - Convert ARM GIC, GICv3, and L2x0 to DT schema
 
 - Add r8a7778/9 HSCIF serial bindings
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Merge tag 'devicetree-for-5.1' of git://git.kernel.org/pub/scm/linux/kernel/git/robh/linux

Pull Devicetree updates from Rob Herring:

 - Fix a unittest failure on UML. Preparation for converting to kunit
   test framework.

 - Add annotations to dtx_diff output

 - Fix unittest reporting of expected error

 - Move DMA configuration for virtual devices into the driver that needs
   it (s5p-mfc)

 - Vendor prefixes for feiyang and techstar

 - Convert ARM GIC, GICv3, and L2x0 to DT schema

 - Add r8a7778/9 HSCIF serial bindings

* tag 'devicetree-for-5.1' of git://git.kernel.org/pub/scm/linux/kernel/git/robh/linux:
  of: unittest: unflatten device tree on UML when testing
  dt-bindings: Add vendor prefix for feiyang
  dt-bindings: Add vendor prefix for techstar
  dt-bindings: display: add missing semicolon in example
  of: mark early_init_dt_alloc_reserved_memory_arch static
  of: add dtc annotations functionality to dtx_diff
  of: unittest: add caution to function header comment
  of: unittest: remove report of expected error
  dt-bindings: interrupt-controller: Convert ARM GICv3 to json-schema
  dt-bindings: interrupt-controller: Convert ARM GIC to json-schema
  dt-bindings: arm: l2x0: Convert L2 cache to json-schema
  media: s5p-mfc: Fix memdev DMA configuration
  dt-bindings: serial: sh-sci: Document r8a7778/9 HSCIF bindings
 2019-03-10 10:58:43 -07:00
Kangjie Lu d721fe99f6 isdn: mISDNinfineon: fix potential NULL pointer dereference 
In case ioremap fails, the fix returns -ENOMEM to avoid NULL
pointer dereference.

Signed-off-by: Kangjie Lu <kjlu@umn.edu>
Signed-off-by: David S. Miller <davem@davemloft.net>
 2019-03-10 10:58:08 -07:00
Linus Torvalds 3d8dfe75ef arm64 updates for 5.1: 
- Pseudo NMI support for arm64 using GICv3 interrupt priorities
 
 - uaccess macros clean-up (unsafe user accessors also merged but
   reverted, waiting for objtool support on arm64)
 
 - ptrace regsets for Pointer Authentication (ARMv8.3) key management
 
 - inX() ordering w.r.t. delay() on arm64 and riscv (acks in place by the
   riscv maintainers)
 
 - arm64/perf updates: PMU bindings converted to json-schema, unused
   variable and misleading comment removed
 
 - arm64/debug fixes to ensure checking of the triggering exception level
   and to avoid the propagation of the UNKNOWN FAR value into the si_code
   for debug signals
 
 - Workaround for Fujitsu A64FX erratum 010001
 
 - lib/raid6 ARM NEON optimisations
 
 - NR_CPUS now defaults to 256 on arm64
 
 - Minor clean-ups (documentation/comments, Kconfig warning, unused
   asm-offsets, clang warnings)
 
 - MAINTAINERS update for list information to the ARM64 ACPI entry
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Merge tag 'arm64-upstream' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux

Pull arm64 updates from Catalin Marinas:

 - Pseudo NMI support for arm64 using GICv3 interrupt priorities

 - uaccess macros clean-up (unsafe user accessors also merged but
   reverted, waiting for objtool support on arm64)

 - ptrace regsets for Pointer Authentication (ARMv8.3) key management

 - inX() ordering w.r.t. delay() on arm64 and riscv (acks in place by
   the riscv maintainers)

 - arm64/perf updates: PMU bindings converted to json-schema, unused
   variable and misleading comment removed

 - arm64/debug fixes to ensure checking of the triggering exception
   level and to avoid the propagation of the UNKNOWN FAR value into the
   si_code for debug signals

 - Workaround for Fujitsu A64FX erratum 010001

 - lib/raid6 ARM NEON optimisations

 - NR_CPUS now defaults to 256 on arm64

 - Minor clean-ups (documentation/comments, Kconfig warning, unused
   asm-offsets, clang warnings)

 - MAINTAINERS update for list information to the ARM64 ACPI entry

* tag 'arm64-upstream' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux: (54 commits)
  arm64: mmu: drop paging_init comments
  arm64: debug: Ensure debug handlers check triggering exception level
  arm64: debug: Don't propagate UNKNOWN FAR into si_code for debug signals
  Revert "arm64: uaccess: Implement unsafe accessors"
  arm64: avoid clang warning about self-assignment
  arm64: Kconfig.platforms: fix warning unmet direct dependencies
  lib/raid6: arm: optimize away a mask operation in NEON recovery routine
  lib/raid6: use vdupq_n_u8 to avoid endianness warnings
  arm64: io: Hook up __io_par() for inX() ordering
  riscv: io: Update __io_[p]ar() macros to take an argument
  asm-generic/io: Pass result of I/O accessor to __io_[p]ar()
  arm64: Add workaround for Fujitsu A64FX erratum 010001
  arm64: Rename get_thread_info()
  arm64: Remove documentation about TIF_USEDFPU
  arm64: irqflags: Fix clang build warnings
  arm64: Enable the support of pseudo-NMIs
  arm64: Skip irqflags tracing for NMI in IRQs disabled context
  arm64: Skip preemption when exiting an NMI
  arm64: Handle serror in NMI context
  irqchip/gic-v3: Allow interrupts to be set as pseudo-NMI
  ...
 2019-03-10 10:17:23 -07:00
Linus Torvalds d607526296 nios2 update for v5.1-rc1 
nios2: Fix update_mmu_cache preload the TLB with the new PTE
 nios2: update_mmu_cache preload the TLB with the new PTE
 nios2: User address TLB flush break after finding the matching entry
 nios2: flush_tlb_all use TLBMISC way auto-increment feature
 nios2: improve readability of tlb functions
 nios2: flush_tlb_mm flush only the pid
 nios2: flush_tlb_pid can just restore TLBMISC once
 nios2: TLBMISC writes do not require PID bits to be set
 nios2: Use an invalid TLB entry address helper function
 nios2: pte_clear does not need to flush TLB
 nios2: flush_tlb_page use PID based flush
 nios2: update_mmu_cache clear the old entry from the TLB
 nios2: remove redundant 'default n' from Kconfig-s
 nios2: ksyms: Add missing symbol exports
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Merge tag 'nios2-v5.1-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/lftan/nios2

Pull nios2 updates from Ley Foon Tan:
 "Most of updates are MMU related"

* tag 'nios2-v5.1-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/lftan/nios2:
  nios2: Fix update_mmu_cache preload the TLB with the new PTE
  nios2: update_mmu_cache preload the TLB with the new PTE
  nios2: User address TLB flush break after finding the matching entry
  nios2: flush_tlb_all use TLBMISC way auto-increment feature
  nios2: improve readability of tlb functions
  nios2: flush_tlb_mm flush only the pid
  nios2: flush_tlb_pid can just restore TLBMISC once
  nios2: TLBMISC writes do not require PID bits to be set
  nios2: Use an invalid TLB entry address helper function
  nios2: pte_clear does not need to flush TLB
  nios2: flush_tlb_page use PID based flush
  nios2: update_mmu_cache clear the old entry from the TLB
  nios2: remove redundant 'default n' from Kconfig-s
  nios2: ksyms: Add missing symbol exports
 2019-03-10 10:13:37 -07:00
Trond Myklebust 03e51d32da SUNRPC: Check whether the task was transmitted before rebind/reconnect 
Before initiating transport actions that require putting the task to sleep,
such as rebinding or reconnecting, we should check whether or not the task
was already transmitted.

Signed-off-by: Trond Myklebust <trond.myklebust@hammerspace.com>
 2019-03-10 11:55:58 -04:00
Shiju Jose 69b51bbb03 net: hns3: fix to stop multiple HNS reset due to the AER changes 
The commit bfcb79fca1
("PCI/ERR: Run error recovery callbacks for all affected devices")
affected the non-fatal error recovery logic for the HNS and RDMA devices.
This is because each HNS PF under PCIe bus receive callbacks
from the AER driver when an error is reported for one of the PF.
This causes unwanted PF resets because
the HNS decides which PF to reset based on the reset type set.
The HNS error handling code sets the reset type based on the hw error
type detected.

This patch provides fix for the above issue for the recovery of
the hw errors in the HNS and RDMA devices.

This patch needs backporting to the kernel v5.0+

Fixes: 332fbf5765 ("net: hns3: add handling of hw ras errors using new set of commands")
Reported-by: Xiaofei Tan <tanxiaofei@huawei.com>
Signed-off-by: Shiju Jose <shiju.jose@huawei.com>
Signed-off-by: Huazhong Tan <tanhuazhong@huawei.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
 2019-03-09 22:58:47 -08:00
Eric Dumazet 083b78a9ed ip: fix ip_mc_may_pull() return value 
ip_mc_may_pull() must return 0 if there is a problem, not an errno.

syzbot reported :

BUG: KASAN: use-after-free in br_ip4_multicast_igmp3_report net/bridge/br_multicast.c:947 [inline]
BUG: KASAN: use-after-free in br_multicast_ipv4_rcv net/bridge/br_multicast.c:1631 [inline]
BUG: KASAN: use-after-free in br_multicast_rcv+0x3cd8/0x4440 net/bridge/br_multicast.c:1741
Read of size 4 at addr ffff88820a4084ee by task syz-executor.2/11183

CPU: 1 PID: 11183 Comm: syz-executor.2 Not tainted 5.0.0+ #14
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
 print_address_description.cold+0x7c/0x20d mm/kasan/report.c:187
 kasan_report.cold+0x1b/0x40 mm/kasan/report.c:317
 __asan_report_load4_noabort+0x14/0x20 mm/kasan/generic_report.c:131
 br_ip4_multicast_igmp3_report net/bridge/br_multicast.c:947 [inline]
 br_multicast_ipv4_rcv net/bridge/br_multicast.c:1631 [inline]
 br_multicast_rcv+0x3cd8/0x4440 net/bridge/br_multicast.c:1741
 br_handle_frame_finish+0xa3a/0x14c0 net/bridge/br_input.c:108
 br_nf_hook_thresh+0x2ec/0x380 net/bridge/br_netfilter_hooks.c:1005
 br_nf_pre_routing_finish+0x8e2/0x1750 net/bridge/br_netfilter_hooks.c:410
 NF_HOOK include/linux/netfilter.h:289 [inline]
 NF_HOOK include/linux/netfilter.h:283 [inline]
 br_nf_pre_routing+0x7e7/0x13a0 net/bridge/br_netfilter_hooks.c:506
 nf_hook_entry_hookfn include/linux/netfilter.h:119 [inline]
 nf_hook_slow+0xbf/0x1f0 net/netfilter/core.c:511
 nf_hook include/linux/netfilter.h:244 [inline]
 NF_HOOK include/linux/netfilter.h:287 [inline]
 br_handle_frame+0x95b/0x1450 net/bridge/br_input.c:305
 __netif_receive_skb_core+0xa96/0x3040 net/core/dev.c:4902
 __netif_receive_skb_one_core+0xa8/0x1a0 net/core/dev.c:4971
 __netif_receive_skb+0x2c/0x1c0 net/core/dev.c:5083
 netif_receive_skb_internal+0x117/0x660 net/core/dev.c:5186
 netif_receive_skb+0x6e/0x5a0 net/core/dev.c:5261

Fixes: ba5ea61462 ("bridge: simplify ip_mc_check_igmp() and ipv6_mc_check_mld() calls")
Signed-off-by: Eric Dumazet <edumazet@google.com>
Reported-by: syzbot <syzkaller@googlegroups.com>
Cc: Linus Lüssing <linus.luessing@c0d3.blue>
Signed-off-by: David S. Miller <davem@davemloft.net>
 2019-03-09 19:52:47 -08:00
Guillaume Nault 1039c6e193 net: keep refcount warning in reqsk_free() 
As Eric Dumazet said, "We do not have a way to tell if the req was ever
inserted in a hash table, so better play safe.".
Let's remove this comment, so that nobody will be tempted to drop the
WARN_ON_ONCE() line.

Signed-off-by: Guillaume Nault <gnault@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
 2019-03-09 19:51:44 -08:00
Linus Torvalds 6cdc577a18 - Update bio-based DM core to always call blk_queue_split() and update 
DM targets to properly advertise discard limits that blk_queue_split()
   looks at when dtermining to split discard.  Whereby allowing DM core's
   own 'split_discard_bios' to be removed.
 
 - Improve DM cache target to provide support for discard passdown to the
   origin device.
 
 - Introduce support to directly boot to a DM mapped device from init by
   using dm-mod.create= module param.  This eliminates the need for an
   elaborate initramfs that is otherwise needed to create DM devices.
   This feature's implementation has been worked on for quite some time
   (got up to v12) and is of particular interest to Android and other
   more embedded platforms (e.g. ARM).
 
 - Rate limit errors from the DM integrity target that were identified as
   the cause for recent NMI hangs due to console limitations.
 
 - Add sanity checks for user input to thin-pool and external snapshot
   creation.
 
 - Remove some unused leftover kmem caches from when old .request_fn
   request-based support was removed.
 
 - Various small cleanups and fixes to targets (e.g. typos, needless
   unlikely() annotations, use struct_size(), remove needless
   .direct_access method from dm-snapshot)
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Merge tag 'for-5.1/dm-changes' of git://git.kernel.org/pub/scm/linux/kernel/git/device-mapper/linux-dm

Pull device mapper updates from Mike Snitzer:

 - Update bio-based DM core to always call blk_queue_split() and update
   DM targets to properly advertise discard limits that
   blk_queue_split() looks at when dtermining to split discard. Whereby
   allowing DM core's own 'split_discard_bios' to be removed.

 - Improve DM cache target to provide support for discard passdown to
   the origin device.

 - Introduce support to directly boot to a DM mapped device from init by
   using dm-mod.create= module param. This eliminates the need for an
   elaborate initramfs that is otherwise needed to create DM devices.

   This feature's implementation has been worked on for quite some time
   (got up to v12) and is of particular interest to Android and other
   more embedded platforms (e.g. ARM).

 - Rate limit errors from the DM integrity target that were identified
   as the cause for recent NMI hangs due to console limitations.

 - Add sanity checks for user input to thin-pool and external snapshot
   creation.

 - Remove some unused leftover kmem caches from when old .request_fn
   request-based support was removed.

 - Various small cleanups and fixes to targets (e.g. typos, needless
   unlikely() annotations, use struct_size(), remove needless
   .direct_access method from dm-snapshot)

* tag 'for-5.1/dm-changes' of git://git.kernel.org/pub/scm/linux/kernel/git/device-mapper/linux-dm:
  dm integrity: limit the rate of error messages
  dm snapshot: don't define direct_access if we don't support it
  dm cache: add support for discard passdown to the origin device
  dm writecache: fix typo in name for writeback_wq
  dm: add support to directly boot to a mapped device
  dm thin: add sanity checks to thin-pool and external snapshot creation
  dm block manager: remove redundant unlikely annotation
  dm verity fec: remove redundant unlikely annotation
  dm integrity: remove redundant unlikely annotation
  dm: always call blk_queue_split() in dm_process_bio()
  dm: fix to_sector() for 32bit
  dm switch: use struct_size() in kzalloc()
  dm: remove unused _rq_tio_cache and _rq_cache
  dm: eliminate 'split_discard_bios' flag from DM target interface
  dm: update dm_process_bio() to split bio if in ->make_request_fn()
 2019-03-09 17:40:27 -08:00
Linus Torvalds 92fff53b71 SCSI misc on 20190306 
This is mostly update of the usual drivers: arcmsr, qla2xxx, lpfc,
 hisi_sas, target/iscsi and target/core.  Additionally Christoph
 refactored gdth as part of the dma changes.  The major mid-layer
 change this time is the removal of bidi commands and with them the
 whole of the osd/exofs driver and filesystem.
 
 Signed-off-by: James E.J. Bottomley <jejb@linux.ibm.com>
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Merge tag 'scsi-misc' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi

Pull SCSI updates from James Bottomley:
 "This is mostly update of the usual drivers: arcmsr, qla2xxx, lpfc,
  hisi_sas, target/iscsi and target/core.

  Additionally Christoph refactored gdth as part of the dma changes. The
  major mid-layer change this time is the removal of bidi commands and
  with them the whole of the osd/exofs driver and filesystem. This is a
  major simplification for block and mq in particular"

* tag 'scsi-misc' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi: (240 commits)
  scsi: cxgb4i: validate tcp sequence number only if chip version <= T5
  scsi: cxgb4i: get pf number from lldi->pf
  scsi: core: replace GFP_ATOMIC with GFP_KERNEL in scsi_scan.c
  scsi: mpt3sas: Add missing breaks in switch statements
  scsi: aacraid: Fix missing break in switch statement
  scsi: kill command serial number
  scsi: csiostor: drop serial_number usage
  scsi: mvumi: use request tag instead of serial_number
  scsi: dpt_i2o: remove serial number usage
  scsi: st: osst: Remove negative constant left-shifts
  scsi: ufs-bsg: Allow reading descriptors
  scsi: ufs: Allow reading descriptor via raw upiu
  scsi: ufs-bsg: Change the calling convention for write descriptor
  scsi: ufs: Remove unused device quirks
  Revert "scsi: ufs: disable vccq if it's not needed by UFS device"
  scsi: megaraid_sas: Remove a bunch of set but not used variables
  scsi: clean obsolete return values of eh_timed_out
  scsi: sd: Optimal I/O size should be a multiple of physical block size
  scsi: MAINTAINERS: SCSI initiator and target tweaks
  scsi: fcoe: make use of fip_mode enum complete
  ...
 2019-03-09 16:53:47 -08:00
Jason Gerecke 44fc95e218 Input: wacom_serial4 - add support for Wacom ArtPad II tablet 
Tablet initially begins communicating at 9600 baud, so this command
should be used to connect to the device:

    $ inputattach --daemon --baud 9600 --wacom_iv /dev/ttyS0

https://github.com/linuxwacom/xf86-input-wacom/issues/40

Signed-off-by: Jason Gerecke <jason.gerecke@wacom.com>
Cc: stable@vger.kernel.org
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
 2019-03-09 15:57:18 -08:00
Vincent Batts e154ab6932 Input: elan_i2c - add id for touchpad found in Lenovo s21e-20 
Lenovo s21e-20 uses ELAN0601 in its ACPI tables for the Elan touchpad.

Signed-off-by: Vincent Batts <vbatts@hashbangbash.com>
Cc: stable@vger.kernel.org
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
 2019-03-09 15:57:17 -08:00
Arnd Bergmann 3366757554 Input: raspberrypi-ts - select CONFIG_INPUT_POLLDEV 
When CONFIG_INPUT_POLLDEV is disabled, we get a link error:

drivers/input/touchscreen/raspberrypi-ts.o: In function `rpi_ts_probe':
raspberrypi-ts.c:(.text+0xec): undefined reference to `devm_input_allocate_polled_device'
raspberrypi-ts.c:(.text+0xec): relocation truncated to fit: R_AARCH64_CALL26 against undefined symbol `devm_input_allocate_polled_device'
raspberrypi-ts.c:(.text+0x19c): undefined reference to `input_register_polled_device'
raspberrypi-ts.c:(.text+0x19c): relocation truncated to fit: R_AARCH64_CALL26 against undefined symbol `input_register_polled_device'

Select that symbol like we do from the other similar drivers.

Fixes: 0b9f28fed3 ("Input: add official Raspberry Pi's touchscreen driver")
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Reviewed-by: Nicolas Saenz Julienne <nsaenzjulienne@suse.de>
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
 2019-03-09 15:57:16 -08:00
Arnd Bergmann 741c73ed35 Input: msm-vibrator - use correct gpio header 
When CONFIG_GPIOLIB is not set, we get a couple of build
errors during test building:

drivers/input/misc/msm-vibrator.c: In function 'msm_vibrator_start':
drivers/input/misc/msm-vibrator.c:79:3: error: implicit declaration of function 'gpiod_set_value_cansleep'; did you mean 'gpio_set_value_cansleep'? [-Werror=implicit-function-declaration]
   gpiod_set_value_cansleep(vibrator->enable_gpio, 1);
   ^~~~~~~~~~~~~~~~~~~~~~~~
   gpio_set_value_cansleep
drivers/input/misc/msm-vibrator.c: In function 'msm_vibrator_probe':
drivers/input/misc/msm-vibrator.c:176:26: error: implicit declaration of function 'devm_gpiod_get'; did you mean 'devm_gpio_free'? [-Werror=implicit-function-declaration]
  vibrator->enable_gpio = devm_gpiod_get(&pdev->dev, "enable",
                          ^~~~~~~~~~~~~~
                          devm_gpio_free
drivers/input/misc/msm-vibrator.c:177:13: error: 'GPIOD_OUT_LOW' undeclared (first use in this function); did you mean 'GPIOF_INIT_LOW'?
             GPIOD_OUT_LOW);
             ^~~~~~~~~~~~~
             GPIOF_INIT_LOW
drivers/input/misc/msm-vibrator.c:177:13: note: each undeclared identifier is reported only once for each function it appears in

This is easy to avoid when we use gpio/consumer.h as the documented interface.

Fixes: 0f681d09e6 ("Input: add new vibrator driver for various MSM SOCs")
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
 2019-03-09 15:57:15 -08:00
Linus Torvalds a50243b1dd 5.1 Merge Window Pull Request 
This has been a slightly more active cycle than normal with ongoing core
 changes and quite a lot of collected driver updates.
 
 - Various driver fixes for bnxt_re, cxgb4, hns, mlx5, pvrdma, rxe
 
 - A new data transfer mode for HFI1 giving higher performance
 
 - Significant functional and bug fix update to the mlx5 On-Demand-Paging MR
   feature
 
 - A chip hang reset recovery system for hns
 
 - Change mm->pinned_vm to an atomic64
 
 - Update bnxt_re to support a new 57500 chip
 
 - A sane netlink 'rdma link add' method for creating rxe devices and fixing
   the various unregistration race conditions in rxe's unregister flow
 
 - Allow lookup up objects by an ID over netlink
 
 - Various reworking of the core to driver interface:
   * Drivers should not assume umem SGLs are in PAGE_SIZE chunks
   * ucontext is accessed via udata not other means
   * Start to make the core code responsible for object memory
     allocation
   * Drivers should convert struct device to struct ib_device
     via a helper
   * Drivers have more tools to avoid use after unregister problems
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Merge tag 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/rdma/rdma

Pull rdma updates from Jason Gunthorpe:
 "This has been a slightly more active cycle than normal with ongoing
  core changes and quite a lot of collected driver updates.

   - Various driver fixes for bnxt_re, cxgb4, hns, mlx5, pvrdma, rxe

   - A new data transfer mode for HFI1 giving higher performance

   - Significant functional and bug fix update to the mlx5
     On-Demand-Paging MR feature

   - A chip hang reset recovery system for hns

   - Change mm->pinned_vm to an atomic64

   - Update bnxt_re to support a new 57500 chip

   - A sane netlink 'rdma link add' method for creating rxe devices and
     fixing the various unregistration race conditions in rxe's
     unregister flow

   - Allow lookup up objects by an ID over netlink

   - Various reworking of the core to driver interface:
       - drivers should not assume umem SGLs are in PAGE_SIZE chunks
       - ucontext is accessed via udata not other means
       - start to make the core code responsible for object memory
         allocation
       - drivers should convert struct device to struct ib_device via a
         helper
       - drivers have more tools to avoid use after unregister problems"

* tag 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/rdma/rdma: (280 commits)
  net/mlx5: ODP support for XRC transport is not enabled by default in FW
  IB/hfi1: Close race condition on user context disable and close
  RDMA/umem: Revert broken 'off by one' fix
  RDMA/umem: minor bug fix in error handling path
  RDMA/hns: Use GFP_ATOMIC in hns_roce_v2_modify_qp
  cxgb4: kfree mhp after the debug print
  IB/rdmavt: Fix concurrency panics in QP post_send and modify to error
  IB/rdmavt: Fix loopback send with invalidate ordering
  IB/iser: Fix dma_nents type definition
  IB/mlx5: Set correct write permissions for implicit ODP MR
  bnxt_re: Clean cq for kernel consumers only
  RDMA/uverbs: Don't do double free of allocated PD
  RDMA: Handle ucontext allocations by IB/core
  RDMA/core: Fix a WARN() message
  bnxt_re: fix the regression due to changes in alloc_pbl
  IB/mlx4: Increase the timeout for CM cache
  IB/core: Abort page fault handler silently during owning process exit
  IB/mlx5: Validate correct PD before prefetch MR
  IB/mlx5: Protect against prefetch of invalid MR
  RDMA/uverbs: Store PR pointer before it is overwritten
  ...
 2019-03-09 15:53:03 -08:00
Linus Torvalds 2901752c14 pci-v5.1-changes 
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Merge tag 'pci-v5.1-changes' of git://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci

Pull PCI updates from Bjorn Helgaas:

 - Use match_string() instead of reimplementing it (Andy Shevchenko)

 - Enable SERR# forwarding for all bridges (Bharat Kumar Gogada)

 - Use Latency Tolerance Reporting if already enabled by platform (Bjorn
   Helgaas)

 - Save/restore LTR info for suspend/resume (Bjorn Helgaas)

 - Fix DPC use of uninitialized data (Dongdong Liu)

 - Probe bridge window attributes only once at enumeration-time to fix
   device accesses during rescan (Bjorn Helgaas)

 - Return BAR size (not "size -1 ") from pci_size() to simplify code (Du
   Changbin)

 - Use config header type (not class code) identify bridges more
   reliably (Honghui Zhang)

 - Work around Intel Denverton incorrect Trace Hub BAR size reporting
   (Alexander Shishkin)

 - Reorder pciehp cached state/hardware state updates to avoid missed
   interrupts (Mika Westerberg)

 - Turn ibmphp semaphores into completions or mutexes (Arnd Bergmann)

 - Mark expected switch fall-through (Mathieu Malaterre)

 - Use of_node_name_eq() for node name comparisons (Rob Herring)

 - Add ACS and pciehp quirks for HXT SD4800 (Shunyong Yang)

 - Consolidate Rohm Vendor ID definitions (Andy Shevchenko)

 - Use u32 (not __u32) for things not exposed to userspace (Logan
   Gunthorpe)

 - Fix locking semantics of bus and slot reset interfaces (Alex
   Williamson)

 - Update PCIEPORTBUS Kconfig help text (Hou Zhiqiang)

 - Allow portdrv to claim subtractive decode Ports so PCIe services will
   work for them (Honghui Zhang)

 - Report PCIe links that become degraded at run-time (Alexandru
   Gagniuc)

 - Blacklist Gigabyte X299 Root Port power management to fix Thunderbolt
   hotplug (Mika Westerberg)

 - Revert runtime PM suspend/resume callbacks that broke PME on network
   cable plug (Mika Westerberg)

 - Disable Data Link State Changed interrupts to prevent wakeup
   immediately after suspend (Mika Westerberg)

 - Extend altera to support Stratix 10 (Ley Foon Tan)

 - Allow building altera driver on ARM64 (Ley Foon Tan)

 - Replace Douglas with Tom Joseph as Cadence PCI host/endpoint
   maintainer (Lorenzo Pieralisi)

 - Add DT support for R-Car RZ/G2E (R8A774C0) (Fabrizio Castro)

 - Add dra72x/dra74x/dra76x SoC compatible strings (Kishon Vijay Abraham I)

 - Enable x2 mode support for dra72x/dra74x/dra76x SoC (Kishon Vijay
   Abraham I)

 - Configure dra7xx PHY to PCIe mode (Kishon Vijay Abraham I)

 - Simplify dwc (remove unnecessary header includes, name variables
   consistently, reduce inverted logic, etc) (Gustavo Pimentel)

 - Add i.MX8MQ support (Andrey Smirnov)

 - Add message to help debug dwc MSI-X mask bit errors (Gustavo
   Pimentel)

 - Work around imx7d PCIe PLL erratum (Trent Piepho)

 - Don't assert qcom reset GPIO during probe (Bjorn Andersson)

 - Skip dwc MSI init if MSIs have been disabled (Lucas Stach)

 - Use memcpy_fromio()/memcpy_toio() instead of plain memcpy() in PCI
   endpoint framework (Wen Yang)

 - Add interface to discover supported endpoint features to replace a
   bitfield that wasn't flexible enough (Kishon Vijay Abraham I)

 - Implement the new supported-feature interface for designware-plat,
   dra7xx, rockchip, cadence (Kishon Vijay Abraham I)

 - Fix issues with 64-bit BAR in endpoints (Kishon Vijay Abraham I)

 - Add layerscape endpoint mode support (Xiaowei Bao)

 - Remove duplicate struct hv_vp_set in favor of struct hv_vpset (Maya
   Nakamura)

 - Rework hv_irq_unmask() to use cpumask_to_vpset() instead of
   open-coded reimplementation (Maya Nakamura)

 - Align Hyper-V struct retarget_msi_interrupt arguments (Maya Nakamura)

 - Fix mediatek MMIO size computation to enable full size of available
   MMIO space (Honghui Zhang)

 - Fix mediatek DMA window size computation to allow endpoint DMA access
   to full DRAM address range (Honghui Zhang)

 - Fix mvebu prefetchable BAR regression caused by common bridge
   emulation that assumed all bridges had prefetchable windows (Thomas
   Petazzoni)

 - Make advk_pci_bridge_emul_ops static (Wei Yongjun)

 - Configure MPS settings for VMD root ports (Jon Derrick)

* tag 'pci-v5.1-changes' of git://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci: (92 commits)
  PCI: Update PCIEPORTBUS Kconfig help text
  PCI: Fix "try" semantics of bus and slot reset
  PCI/LINK: Report degraded links via link bandwidth notification
  dt-bindings: PCI: altera: Add altr,pcie-root-port-2.0
  PCI: altera: Enable driver on ARM64
  PCI: altera: Add Stratix 10 PCIe support
  PCI/PME: Fix possible use-after-free on remove
  PCI: aardvark: Make symbol 'advk_pci_bridge_emul_ops' static
  PCI: dwc: skip MSI init if MSIs have been explicitly disabled
  PCI: hv: Refactor hv_irq_unmask() to use cpumask_to_vpset()
  PCI: hv: Replace hv_vp_set with hv_vpset
  PCI: hv: Add __aligned(8) to struct retarget_msi_interrupt
  PCI: mediatek: Enlarge PCIe2AHB window size to support 4GB DRAM
  PCI: mediatek: Fix memory mapped IO range size computation
  PCI: dwc: Remove superfluous shifting in definitions
  PCI: dwc: Make use of GENMASK/FIELD_PREP
  PCI: dwc: Make use of BIT() in constant definitions
  PCI: dwc: Share code for dw_pcie_rd/wr_other_conf()
  PCI: dwc: Make use of IS_ALIGNED()
  PCI: imx6: Add code to request/control "pcie_aux" clock for i.MX8MQ
  ...
 2019-03-09 14:57:08 -08:00
Linus Torvalds 96a6de1a54 media updates for v5.1-rc1 
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Merge tag 'media/v5.1-1' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-media

Pull media updates from Mauro Carvalho Chehab:

 - remove sensor drivers that got converted from soc_camera

 - remaining soc_camera drivers got moved to staging

 - some documentation cleanups and improvements

 - the imx staging driver now supports imx7

 - the ov9640, mt9m001 and mt9m111 got converted from soc_camera

 - the vim2m driver now does what a m2m convert driver expects to do

 - epoll() fixes on media subsystems

 - several drivers fixes, typos, cleanups and improvements

* tag 'media/v5.1-1' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-media: (346 commits)
  media: dvb/earth-pt1: fix wrong initialization for demod blocks
  media: vim2m: Address some coding style issues
  media: vim2m: don't use BUG()
  media: vim2m: speedup passthrough copy
  media: vim2m: add an horizontal scaler
  media: vim2m: don't accept YUYV anymore as output format
  media: vim2m: add vertical linear scaler
  media: vim2m: better handle cap/out buffers with different sizes
  media: vim2m: use different framesizes for bayer formats
  media: vim2m: add support for VIDIOC_ENUM_FRAMESIZES
  media: vim2m: ensure that width is multiple of two
  media: vim2m: improve debug messages
  media: vim2m: add bayer capture formats
  media: a few more typos at staging, pci, platform, radio and usb
  media: Documentation: fix several typos
  media: staging: fix several typos
  media: include: fix several typos
  media: common: fix several typos
  media: v4l2-core: fix several typos
  media: usb: fix several typos
  ...
 2019-03-09 14:45:54 -08:00
Trond Myklebust 6b5f590016 SUNRPC: Remove redundant calls to RPC_IS_QUEUED() 
The RPC task wakeup calls all check for RPC_IS_QUEUED() before taking any
locks. In addition, rpc_exit() already calls rpc_wake_up_queued_task().

Signed-off-by: Trond Myklebust <trond.myklebust@hammerspace.com>
 2019-03-09 16:22:58 -05:00
Trond Myklebust cea57789e4 SUNRPC: Clean up 
Replace remaining callers of call_timeout() with rpc_check_timeout().

Signed-off-by: Trond Myklebust <trond.myklebust@hammerspace.com>
 2019-03-09 16:22:58 -05:00
Linus Torvalds 36011ddc78 We've only got three patches ready for this merge window: 
- Fix a hang related to missed wakeups for glocks from Andreas Gruenbacher.
  - Rework of how gfs2 manages its debugfs files from Greg K-H.
  - An incorrect assert when truncating or deleting files from Tim Smith.
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Merge tag 'gfs2-5.1.fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/gfs2/linux-gfs2

Pull gfs2 updates from Bob Peterson:
 "We've only got three patches ready for this merge window:

   - Fix a hang related to missed wakeups for glocks from Andreas
     Gruenbacher

   - Rework of how gfs2 manages its debugfs files from Greg K-H

   - An incorrect assert when truncating or deleting files from Tim
     Smith"

* tag 'gfs2-5.1.fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/gfs2/linux-gfs2:
  gfs2: Fix missed wakeups in find_insert_glock
  gfs2: Fix an incorrect gfs2_assert()
  gfs: no need to check return value of debugfs_create functions
 2019-03-09 11:52:11 -08:00
Linus Torvalds e519a8c2c3 smb3/cifs fixes including for large i/o error cases, fixes for 3 xfstests, improved crediting (smb3 flow control); improved tracing 
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Merge tag '5.1-rc-smb3-fixes' of git://git.samba.org/sfrench/cifs-2.6

Pull smb3 updates from Steve French:

 - smb3/cifs fixes including for large i/o error cases

 - fixes for three xfstests

 - improved crediting (smb3 flow control)

 - improved tracing

* tag '5.1-rc-smb3-fixes' of git://git.samba.org/sfrench/cifs-2.6: (44 commits)
  fs: cifs: Kconfig: pedantic formatting
  smb3: request more credits on normal (non-large read/write) ops
  CIFS: Mask off signals when sending SMB packets
  CIFS: Return -EAGAIN instead of -ENOTSOCK
  CIFS: Only send SMB2_NEGOTIATE command on new TCP connections
  CIFS: Fix read after write for files with read caching
  smb3: for kerberos mounts display the credential uid used
  cifs: use correct format characters
  smb3: add dynamic trace point for query_info_enter/done
  smb3: add dynamic trace point for smb3_cmd_enter
  smb3: improve dynamic tracing of open and posix mkdir
  smb3: add missing read completion trace point
  smb3: Add tracepoints for read, write and query_dir enter
  smb3: add tracepoints for query dir
  smb3: Update POSIX negotiate context with POSIX ctxt GUID
  cifs: update internal module version number
  CIFS: Try to acquire credits at once for compound requests
  CIFS: Return error code when getting file handle for writeback
  CIFS: Move open file handling to writepages
  CIFS: Move unlocking pages from wdata_send_pages()
  ...
 2019-03-09 11:48:20 -08:00
Linus Torvalds d1cae94871 fscrypt updates for v5.1 
First: Ted, Jaegeuk, and I have decided to add me as a co-maintainer for
 fscrypt, and we're now using a shared git tree.  So we've updated
 MAINTAINERS accordingly, and I'm doing the pull request this time.
 
 The actual changes for v5.1 are:
 
 - Remove the fs-specific kconfig options like CONFIG_EXT4_ENCRYPTION and
   make fscrypt support for all fscrypt-capable filesystems be controlled
   by CONFIG_FS_ENCRYPTION, similar to how CONFIG_QUOTA works.
 
 - Improve error code for rename() and link() into encrypted directories.
 
 - Various cleanups.
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Merge tag 'fscrypt-for-linus' of git://git.kernel.org/pub/scm/fs/fscrypt/fscrypt

Pull fscrypt updates from Eric Biggers:
 "First: Ted, Jaegeuk, and I have decided to add me as a co-maintainer
  for fscrypt, and we're now using a shared git tree. So we've updated
  MAINTAINERS accordingly, and I'm doing the pull request this time.

  The actual changes for v5.1 are:

   - Remove the fs-specific kconfig options like CONFIG_EXT4_ENCRYPTION
     and make fscrypt support for all fscrypt-capable filesystems be
     controlled by CONFIG_FS_ENCRYPTION, similar to how CONFIG_QUOTA
     works.

   - Improve error code for rename() and link() into encrypted
     directories.

   - Various cleanups"

* tag 'fscrypt-for-linus' of git://git.kernel.org/pub/scm/fs/fscrypt/fscrypt:
  MAINTAINERS: add Eric Biggers as an fscrypt maintainer
  fscrypt: return -EXDEV for incompatible rename or link into encrypted dir
  fscrypt: remove filesystem specific build config option
  f2fs: use IS_ENCRYPTED() to check encryption status
  ext4: use IS_ENCRYPTED() to check encryption status
  fscrypt: remove CRYPTO_CTR dependency
 2019-03-09 10:54:24 -08:00
Linus Torvalds 99b25a7fc6 leaking_addresses patches for 5.1-rc1 
Here are two super trivial patches to the leaking addresses script for
 the 5.1-rc1 merge window.  One fixes the debugging output which is
 currently broken in a bunch of places, the other removes the --version
 command line option.
 
 Both patches have been tested and sitting in linux-next tree for a month
 or so.
 
 Signed-off-by: Tobin C. Harding <tobin@kernel.org>
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Merge tag 'leaks-5.1-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tobin/leaks

Pull leaking_addresses updates from Tobin Harding:
 "Here are two super trivial patches to the leaking addresses script.

  One fixes the debugging output which is currently broken in a bunch of
  places, the other removes the --version command line option.

  Both patches have been tested and sitting in linux-next tree for a
  month or so"

* tag 'leaks-5.1-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tobin/leaks:
  leaking_addresses: Completely remove --version flag
  leaking_addresses: Fix calls to dprint
 2019-03-09 10:50:52 -08:00
Linus Torvalds 1a29e85750 A fairly routine cycle for docs - lots of typo fixes, some new documents, 
and more translations.  There's also some LICENSES adjustments from
 Thomas.
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Merge tag 'docs-5.1' of git://git.lwn.net/linux

Pull documentation updates from Jonathan Corbet:
 "A fairly routine cycle for docs - lots of typo fixes, some new
  documents, and more translations. There's also some LICENSES
  adjustments from Thomas"

* tag 'docs-5.1' of git://git.lwn.net/linux: (74 commits)
  docs: Bring some order to filesystem documentation
  Documentation/locking/lockdep: Drop last two chars of sample states
  doc: rcu: Suspicious RCU usage is a warning
  docs: driver-api: iio: fix errors in documentation
  Documentation/process/howto: Update for 4.x -> 5.x versioning
  docs: Explicitly state that the 'Fixes:' tag shouldn't split lines
  doc: security: Add kern-doc for lsm_hooks.h
  doc: sctp: Merge and clean up rst files
  Docs: Correct /proc/stat path
  scripts/spdxcheck.py: fix C++ comment style detection
  doc: fix typos in license-rules.rst
  Documentation: fix admin-guide/README.rst minimum gcc version requirement
  doc: process: complete removal of info about -git patches
  doc: translations: sync translations 'remove info about -git patches'
  perf-security: wrap paragraphs on 72 columns
  perf-security: elaborate on perf_events/Perf privileged users
  perf-security: document collected perf_events/Perf data categories
  perf-security: document perf_events/Perf resource control
  sysfs.txt: add note on available attribute macros
  docs: kernel-doc: typo "if ... if" -> "if ... is"
  ...
 2019-03-09 09:56:17 -08:00
Linus Torvalds c4703acd6d Printk changes for 5.1 
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Merge tag 'printk-for-5.1' of git://git.kernel.org/pub/scm/linux/kernel/git/pmladek/printk

Pull printk updates from Petr Mladek:

 - Allow to sort mixed lines by an extra information about the caller

 - Remove no longer used LOG_PREFIX.

 - Some clean up and documentation update.

* tag 'printk-for-5.1' of git://git.kernel.org/pub/scm/linux/kernel/git/pmladek/printk:
  printk/docs: Add extra integer types to printk-formats
  printk: Remove no longer used LOG_PREFIX.
  lib/vsprintf: Remove %pCr remnant in comment
  printk: Pass caller information to log_store().
  printk: Add caller information to printk() output.
 2019-03-09 09:22:42 -08:00
Linus Torvalds a448c643bc linux-kselftest-5.1-rc1 
This Kselftest update for Linux 5.1-rc1 consists of
 
 - ir test compile warnings fixes
 - seccomp test fixes and improvements from Tycho Andersen and Kees Cook
 - ftrace fixes to non-POSIX-compliant constructs in colored output code
   and handling absence of tput from Juerg Haefliger
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Merge tag 'linux-kselftest-5.1-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/shuah/linux-kselftest

Pull kselftest update fromShuah Khan:

 - ir test compile warnings fixes

 - seccomp test fixes and improvements from Tycho Andersen and Kees Cook

 - ftrace fixes to non-POSIX-compliant constructs in colored output code
   and handling absence of tput from Juerg Haefliger

* tag 'linux-kselftest-5.1-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/shuah/linux-kselftest:
  selftests/ftrace: Handle the absence of tput
  selftests/ftrace: Replace \e with \033
  selftests/ftrace: Replace echo -e with printf
  selftests: ir: skip when non-root user runs the test
  selftests: ir: skip when lirc device doesn't exist.
  selftests: ir: fix warning: "%s" directive output may be truncated ’ directive output may be truncated
  selftests/seccomp: Actually sleep for 1/10th second
  selftests/harness: Update named initializer syntax
  selftests: unshare userns in seccomp pidns testcases
  selftests: set NO_NEW_PRIVS bit in seccomp user tests
  selftests: skip seccomp get_metadata test if not real root
  selftest: include stdio.h in kselftest.h
  selftests: fix typo in seccomp_bpf.c
  selftests: don't kill child immediately in get_metadata() test
 2019-03-09 09:19:31 -08:00
Linus Torvalds 2bb995405f increased structleak coverage 
- And scalar and array initialization coverage
 - Refactor Kconfig to make options more clear
 - Add self-test module for testing automatic initialization
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Merge tag 'gcc-plugins-v5.1-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/kees/linux

Pull gcc-plugins updates from Kees Cook:
 "This adds additional type coverage to the existing structleak plugin
  and adds a large set of selftests to help evaluate stack variable
  zero-initialization coverage.

  That can be used to test whatever instrumentation might be performing
  zero-initialization: either with the structleak plugin or with Clang's
  coming "-ftrivial-auto-var-init=zero" option.

  Summary:

   - Add scalar and array initialization coverage

   - Refactor Kconfig to make options more clear

   - Add self-test module for testing automatic initialization"

* tag 'gcc-plugins-v5.1-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/kees/linux:
  lib: Introduce test_stackinit module
  gcc-plugins: structleak: Generalize to all variable types
 2019-03-09 09:06:15 -08:00
Linus Torvalds a39f009ace pstore cleanups 
- Remove some needless memory allocations (Yue Hu, Kees Cook)
 - Add zero-length checks to avoid no-op calls (Yue Hu)
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Merge tag 'pstore-v5.1-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/kees/linux

Pull pstore cleanups from Kees Cook:

 - Remove some needless memory allocations (Yue Hu, Kees Cook)

 - Add zero-length checks to avoid no-op calls (Yue Hu)

* tag 'pstore-v5.1-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/kees/linux:
  pstore/ram: Avoid needless alloc during header write
  pstore/ram: Add kmsg hlen zero check to ramoops_pstore_write()
  pstore/ram: Move initialization earlier
  pstore: Avoid writing records with zero size
  pstore/ram: Replace dummy_data heap memory with stack memory
 2019-03-09 09:02:47 -08:00
Baruch Siach 5bbf1b6d05 MAINTAINERS: fix typo in Mimi Zohar's address 
Fixes: ("MAINTAINERS: Update from @linux.vnet.ibm.com to @linux.ibm.com")
Reviewed-by: Paul E. McKenney <paulmck@linux.ibm.com>
Signed-off-by: Baruch Siach <baruch@tkos.co.il>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
 2019-03-09 08:51:36 -08:00
Ingo Molnar b339da4803 perf bpf: 
Arnaldo Carvalho de Melo:
 
   - Automatically add BTF ELF markers to 'perf trace' BPF programs, so that
     tools such as 'bpftool map dump' can pretty print map keys and values.
 
 perf c2c:
 
   Jiri Olsa:
 
   - Fix report for empty NUMA node.
 
 perf diff:
 
   Jin Yao:
 
   - Support --time, --cpu, --pid and --tid filter options.
 
 perf probe:
 
   Arnaldo Carvalho de Melo:
 
   - Clarify error message about not finding kernel modules debuginfo.
 
 perf record:
 
   Jiri Olsa:
 
   - Fixup probing for max attr.precise_ip.
 
 perf trace:
 
   Arnaldo Carvalho de Melo:
 
   - Add missing %s lost in the 'msg_flags' recvmmsg arg when adding prefix suppression logic.
 
 perf annotate:
 
   Arnaldo Carvalho de Melo:
 
   - Calculate the max instruction name, align column to that, removing the
     hardcoded max 6 chars and cope with instructions with names longer than that,
     such as vpmovmskb, vpcmpeqb, etc.
 
 kernel:
 
   Song Liu:
 
   - Consider events with attr.bpf_event set as side-band.
 
   Gustavo A. R. Silva:
 
   - Mark expected switch fall-through in perf_event_parse_addr_filter().
 
 Libraries:
 
   Jiri Olsa:
 
   - Fix leaks and double frees on error paths.
 
 libtraceevent:
 
   Tony Jones:
 
   - Fix buffer overflow in arg_eval().
 
 python scripting:
 
   Tony Jones:
 
   - More python3 fixes.
 
 Trivial:
 
   Yang Wei:
 
   - Remove needless extra semicolon in clang C++ glue code.
 
 Intel PT/BTS:
 
   Adrian Hunter:
 
   - Improve auxtrace address filter error message when there is no DSO.
 
   - Fix divide by zero when TSC is not available.
 
   - Further improvements to the export to sqlite/posgresql python scripts
     and to the GUI sqlviewer, exporting 'parent_id' so that we have enable
     the creation of call trees.
 
   Andi Kleen:
 
   - Generalize function to copy from thread addr space from intel-bts code.
 
 Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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Merge tag 'perf-core-for-mingo-5.1-20190307' of git://git.kernel.org/pub/scm/linux/kernel/git/acme/linux into perf/urgent

Pull perf/core changes from Arnaldo Carvalho de Melo:

perf bpf:

  Arnaldo Carvalho de Melo:

  - Automatically add BTF ELF markers to 'perf trace' BPF programs, so that
    tools such as 'bpftool map dump' can pretty print map keys and values.

perf c2c:

  Jiri Olsa:

  - Fix report for empty NUMA node.

perf diff:

  Jin Yao:

  - Support --time, --cpu, --pid and --tid filter options.

perf probe:

  Arnaldo Carvalho de Melo:

  - Clarify error message about not finding kernel modules debuginfo.

perf record:

  Jiri Olsa:

  - Fixup probing for max attr.precise_ip.

perf trace:

  Arnaldo Carvalho de Melo:

  - Add missing %s lost in the 'msg_flags' recvmmsg arg when adding prefix suppression logic.

perf annotate:

  Arnaldo Carvalho de Melo:

  - Calculate the max instruction name, align column to that, removing the
    hardcoded max 6 chars and cope with instructions with names longer than that,
    such as vpmovmskb, vpcmpeqb, etc.

kernel:

  Song Liu:

  - Consider events with attr.bpf_event set as side-band.

  Gustavo A. R. Silva:

  - Mark expected switch fall-through in perf_event_parse_addr_filter().

Libraries:

  Jiri Olsa:

  - Fix leaks and double frees on error paths.

libtraceevent:

  Tony Jones:

  - Fix buffer overflow in arg_eval().

python scripting:

  Tony Jones:

  - More python3 fixes.

Trivial:

  Yang Wei:

  - Remove needless extra semicolon in clang C++ glue code.

Intel PT/BTS:

  Adrian Hunter:

  - Improve auxtrace address filter error message when there is no DSO.

  - Fix divide by zero when TSC is not available.

  - Further improvements to the export to sqlite/posgresql python scripts
    and to the GUI sqlviewer, exporting 'parent_id' so that we have enable
    the creation of call trees.

  Andi Kleen:

  - Generalize function to copy from thread addr space from intel-bts code.

Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
 2019-03-09 17:00:17 +01:00
Qian Cai 69a106c00e workqueue, lockdep: Fix a memory leak in wq->lock_name 
The following commit:

  669de8bda8 ("kernel/workqueue: Use dynamic lockdep keys for workqueues")

introduced a memory leak as wq_free_lockdep() calls kfree(wq->lock_name),
but wq_init_lockdep() does not point wq->lock_name to the newly allocated
slab object.

This can be reproduced by running LTP fallocate04 followed by oom01 tests:

 unreferenced object 0xc0000005876384d8 (size 64):
  comm "fallocate04", pid 26972, jiffies 4297139141 (age 40370.480s)
  hex dump (first 32 bytes):
    28 77 71 5f 63 6f 6d 70 6c 65 74 69 6f 6e 29 65  (wq_completion)e
    78 74 34 2d 72 73 76 2d 63 6f 6e 76 65 72 73 69  xt4-rsv-conversi
  backtrace:
    [<00000000cb452883>] kvasprintf+0x6c/0xe0
    [<000000004654ddac>] kasprintf+0x34/0x60
    [<000000001c68f311>] alloc_workqueue+0x1f8/0x6ac
    [<0000000003c2ad83>] ext4_fill_super+0x23d4/0x3c80 [ext4]
    [<0000000006610538>] mount_bdev+0x25c/0x290
    [<00000000bcf955ec>] ext4_mount+0x28/0x50 [ext4]
    [<0000000016e08fd3>] legacy_get_tree+0x4c/0xb0
    [<0000000042b6a5fc>] vfs_get_tree+0x6c/0x190
    [<00000000268ab022>] do_mount+0xb9c/0x1100
    [<00000000698e6898>] ksys_mount+0x158/0x180
    [<0000000064e391fd>] sys_mount+0x20/0x30
    [<00000000ba378f12>] system_call+0x5c/0x70

Signed-off-by: Qian Cai <cai@lca.pw>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Reviewed-by: Bart Van Assche <bvanassche@acm.org>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: Andy Lutomirski <luto@kernel.org>
Cc: Borislav Petkov <bp@alien8.de>
Cc: Dave Hansen <dave.hansen@linux.intel.com>
Cc: H. Peter Anvin <hpa@zytor.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Rik van Riel <riel@surriel.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Will Deacon <will.deacon@arm.com>
Cc: catalin.marinas@arm.com
Cc: jiangshanlai@gmail.com
Cc: tj@kernel.org
Fixes: 669de8bda8 ("kernel/workqueue: Use dynamic lockdep keys for workqueues")
Link: https://lkml.kernel.org/r/20190307002731.47371-1-cai@lca.pw
Signed-off-by: Ingo Molnar <mingo@kernel.org>
 2019-03-09 14:15:52 +01:00
Bart Van Assche 009bb421b6 workqueue, lockdep: Fix an alloc_workqueue() error path 
This patch fixes a use-after-free and a memory leak in an alloc_workqueue()
error path.

Repoted by syzkaller and KASAN:

  BUG: KASAN: use-after-free in __read_once_size include/linux/compiler.h:197 [inline]
  BUG: KASAN: use-after-free in lockdep_register_key+0x3b9/0x490 kernel/locking/lockdep.c:1023
  Read of size 8 at addr ffff888090fc2698 by task syz-executor134/7858

  CPU: 1 PID: 7858 Comm: syz-executor134 Not tainted 5.0.0-rc8-next-20190301 #1
  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
   print_address_description.cold+0x7c/0x20d mm/kasan/report.c:187
   kasan_report.cold+0x1b/0x40 mm/kasan/report.c:317
   __asan_report_load8_noabort+0x14/0x20 mm/kasan/generic_report.c:132
   __read_once_size include/linux/compiler.h:197 [inline]
   lockdep_register_key+0x3b9/0x490 kernel/locking/lockdep.c:1023
   wq_init_lockdep kernel/workqueue.c:3444 [inline]
   alloc_workqueue+0x427/0xe70 kernel/workqueue.c:4263
   ucma_open+0x76/0x290 drivers/infiniband/core/ucma.c:1732
   misc_open+0x398/0x4c0 drivers/char/misc.c:141
   chrdev_open+0x247/0x6b0 fs/char_dev.c:417
   do_dentry_open+0x488/0x1160 fs/open.c:771
   vfs_open+0xa0/0xd0 fs/open.c:880
   do_last fs/namei.c:3416 [inline]
   path_openat+0x10e9/0x46e0 fs/namei.c:3533
   do_filp_open+0x1a1/0x280 fs/namei.c:3563
   do_sys_open+0x3fe/0x5d0 fs/open.c:1063
   __do_sys_openat fs/open.c:1090 [inline]
   __se_sys_openat fs/open.c:1084 [inline]
   __x64_sys_openat+0x9d/0x100 fs/open.c:1084
   do_syscall_64+0x103/0x610 arch/x86/entry/common.c:290
   entry_SYSCALL_64_after_hwframe+0x49/0xbe

  Allocated by task 7789:
   save_stack+0x45/0xd0 mm/kasan/common.c:75
   set_track mm/kasan/common.c:87 [inline]
   __kasan_kmalloc mm/kasan/common.c:497 [inline]
   __kasan_kmalloc.constprop.0+0xcf/0xe0 mm/kasan/common.c:470
   kasan_kmalloc+0x9/0x10 mm/kasan/common.c:511
   __do_kmalloc mm/slab.c:3726 [inline]
   __kmalloc+0x15c/0x740 mm/slab.c:3735
   kmalloc include/linux/slab.h:553 [inline]
   kzalloc include/linux/slab.h:743 [inline]
   alloc_workqueue+0x13c/0xe70 kernel/workqueue.c:4236
   ucma_open+0x76/0x290 drivers/infiniband/core/ucma.c:1732
   misc_open+0x398/0x4c0 drivers/char/misc.c:141
   chrdev_open+0x247/0x6b0 fs/char_dev.c:417
   do_dentry_open+0x488/0x1160 fs/open.c:771
   vfs_open+0xa0/0xd0 fs/open.c:880
   do_last fs/namei.c:3416 [inline]
   path_openat+0x10e9/0x46e0 fs/namei.c:3533
   do_filp_open+0x1a1/0x280 fs/namei.c:3563
   do_sys_open+0x3fe/0x5d0 fs/open.c:1063
   __do_sys_openat fs/open.c:1090 [inline]
   __se_sys_openat fs/open.c:1084 [inline]
   __x64_sys_openat+0x9d/0x100 fs/open.c:1084
   do_syscall_64+0x103/0x610 arch/x86/entry/common.c:290
   entry_SYSCALL_64_after_hwframe+0x49/0xbe

  Freed by task 7789:
   save_stack+0x45/0xd0 mm/kasan/common.c:75
   set_track mm/kasan/common.c:87 [inline]
   __kasan_slab_free+0x102/0x150 mm/kasan/common.c:459
   kasan_slab_free+0xe/0x10 mm/kasan/common.c:467
   __cache_free mm/slab.c:3498 [inline]
   kfree+0xcf/0x230 mm/slab.c:3821
   alloc_workqueue+0xc3e/0xe70 kernel/workqueue.c:4295
   ucma_open+0x76/0x290 drivers/infiniband/core/ucma.c:1732
   misc_open+0x398/0x4c0 drivers/char/misc.c:141
   chrdev_open+0x247/0x6b0 fs/char_dev.c:417
   do_dentry_open+0x488/0x1160 fs/open.c:771
   vfs_open+0xa0/0xd0 fs/open.c:880
   do_last fs/namei.c:3416 [inline]
   path_openat+0x10e9/0x46e0 fs/namei.c:3533
   do_filp_open+0x1a1/0x280 fs/namei.c:3563
   do_sys_open+0x3fe/0x5d0 fs/open.c:1063
   __do_sys_openat fs/open.c:1090 [inline]
   __se_sys_openat fs/open.c:1084 [inline]
   __x64_sys_openat+0x9d/0x100 fs/open.c:1084
   do_syscall_64+0x103/0x610 arch/x86/entry/common.c:290
   entry_SYSCALL_64_after_hwframe+0x49/0xbe

  The buggy address belongs to the object at ffff888090fc2580
   which belongs to the cache kmalloc-512 of size 512
  The buggy address is located 280 bytes inside of
   512-byte region [ffff888090fc2580, ffff888090fc2780)

Reported-by: syzbot+17335689e239ce135d8b@syzkaller.appspotmail.com
Signed-off-by: Bart Van Assche <bvanassche@acm.org>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: Andy Lutomirski <luto@kernel.org>
Cc: Borislav Petkov <bp@alien8.de>
Cc: Dave Hansen <dave.hansen@linux.intel.com>
Cc: H. Peter Anvin <hpa@zytor.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Rik van Riel <riel@surriel.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Will Deacon <will.deacon@arm.com>
Fixes: 669de8bda8 ("kernel/workqueue: Use dynamic lockdep keys for workqueues")
Link: https://lkml.kernel.org/r/20190303220046.29448-1-bvanassche@acm.org
Signed-off-by: Ingo Molnar <mingo@kernel.org>
 2019-03-09 14:15:52 +01:00
Bart Van Assche 0126574fca locking/lockdep: Only call init_rcu_head() after RCU has been initialized 
init_data_structures_once() is called for the first time before RCU has
been initialized. Make sure that init_rcu_head() is called before the
RCU head is used and after RCU has been initialized.

Signed-off-by: Bart Van Assche <bvanassche@acm.org>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: Andy Lutomirski <luto@kernel.org>
Cc: Borislav Petkov <bp@alien8.de>
Cc: Dave Hansen <dave.hansen@linux.intel.com>
Cc: H. Peter Anvin <hpa@zytor.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Rik van Riel <riel@surriel.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Will Deacon <will.deacon@arm.com>
Cc: longman@redhat.com
Link: https://lkml.kernel.org/r/c20aa0f0-42ab-a884-d931-7d4ec2bf0cdc@acm.org
Signed-off-by: Ingo Molnar <mingo@kernel.org>
 2019-03-09 14:15:51 +01:00
Arnd Bergmann 3fe7522fb7 locking/lockdep: Avoid a Clang warning 
Clang warns about a tentative array definition without a length:

  kernel/locking/lockdep.c:845:12: error: tentative array definition assumed to have one element [-Werror]

There is no real reason to do this here, so just set the same length as
in the real definition later in the same file.  It has to be hidden in
an #ifdef or annotated __maybe_unused though, to avoid the unused-variable
warning if CONFIG_PROVE_LOCKING is disabled.

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: Andy Lutomirski <luto@kernel.org>
Cc: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Bart Van Assche <bvanassche@acm.org>
Cc: Borislav Petkov <bp@alien8.de>
Cc: Dave Hansen <dave.hansen@linux.intel.com>
Cc: Frederic Weisbecker <frederic@kernel.org>
Cc: H. Peter Anvin <hpa@zytor.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Joel Fernandes (Google) <joel@joelfernandes.org>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Rik van Riel <riel@surriel.com>
Cc: Stephane Eranian <eranian@google.com>
Cc: Steven Rostedt (VMware) <rostedt@goodmis.org>
Cc: Tetsuo Handa <penguin-kernel@I-love.SAKURA.ne.jp>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Vince Weaver <vincent.weaver@maine.edu>
Cc: Waiman Long <longman@redhat.com>
Cc: Will Deacon <will.deacon@arm.com>
Link: https://lkml.kernel.org/r/20190307075222.3424524-1-arnd@arndb.de
Signed-off-by: Ingo Molnar <mingo@kernel.org>
 2019-03-09 14:15:51 +01:00
Gustavo A. R. Silva 43aa378b41 perf/core: Mark expected switch fall-through 
In preparation to enabling -Wimplicit-fallthrough, mark switch cases
where we are expecting to fall through.

This patch fixes the following warning:

  kernel/events/core.c: In function ‘perf_event_parse_addr_filter’:
  kernel/events/core.c:9154:11: warning: this statement may fall through [-Wimplicit-fallthrough=]
      kernel = 1;
      ~~~~~~~^~~
  kernel/events/core.c:9156:3: note: here
     case IF_SRC_FILEADDR:
     ^~~~

Warning level 3 was used: -Wimplicit-fallthrough=3

This patch is part of the ongoing efforts to enable -Wimplicit-fallthrough.

Signed-off-by: Gustavo A. R. Silva <gustavo@embeddedor.com>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Andy Lutomirski <luto@kernel.org>
Cc: Arnaldo Carvalho de Melo <acme@kernel.org>
Cc: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Borislav Petkov <bp@alien8.de>
Cc: Dave Hansen <dave.hansen@linux.intel.com>
Cc: H. Peter Anvin <hpa@zytor.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Kees Cook <keescook@chromium.org>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Rik van Riel <riel@surriel.com>
Cc: Stephane Eranian <eranian@google.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Vince Weaver <vincent.weaver@maine.edu>
Link: https://lkml.kernel.org/r/20190212205430.GA8446@embeddedor
Signed-off-by: Ingo Molnar <mingo@kernel.org>
 2019-03-09 14:10:32 +01:00
Kan Liang 8041ffd36f perf/x86/intel/uncore: Fix client IMC events return huge result 
The client IMC bandwidth events currently return very large values:

  $ perf stat -e uncore_imc/data_reads/ -e uncore_imc/data_writes/ -I 10000 -a

  10.000117222 34,788.76 MiB uncore_imc/data_reads/
  10.000117222 8.26 MiB uncore_imc/data_writes/
  20.000374584 34,842.89 MiB uncore_imc/data_reads/
  20.000374584 10.45 MiB uncore_imc/data_writes/
  30.000633299 37,965.29 MiB uncore_imc/data_reads/
  30.000633299 323.62 MiB uncore_imc/data_writes/
  40.000891548 41,012.88 MiB uncore_imc/data_reads/
  40.000891548 6.98 MiB uncore_imc/data_writes/
  50.001142480 1,125,899,906,621,494.75 MiB uncore_imc/data_reads/
  50.001142480 6.97 MiB uncore_imc/data_writes/

The client IMC events are freerunning counters. They still use the
old event encoding format (0x1 for data_read and 0x2 for data write).
The counter bit width is calculated by common code, which assume that
the standard encoding format is used for the freerunning counters.
Error bit width information is calculated.

The patch intends to convert the old client IMC event encoding to the
standard encoding format.

Current common code uses event->attr.config which directly copy from
user space. We should not implicitly modify it for a converted event.
The event->hw.config is used to replace the event->attr.config in
common code.

For client IMC events, the event->attr.config is used to calculate a
converted event with standard encoding format in the custom
event_init(). The converted event is stored in event->hw.config.
For other events of freerunning counters, they already use the standard
encoding format. The same value as event->attr.config is assigned to
event->hw.config in common event_init().

Reported-by: Jin Yao <yao.jin@linux.intel.com>
Tested-by: Jin Yao <yao.jin@linux.intel.com>
Signed-off-by: Kan Liang <kan.liang@linux.intel.com>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Andy Lutomirski <luto@kernel.org>
Cc: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Borislav Petkov <bp@alien8.de>
Cc: Dave Hansen <dave.hansen@linux.intel.com>
Cc: H. Peter Anvin <hpa@zytor.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Rik van Riel <riel@surriel.com>
Cc: Stephane Eranian <eranian@google.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Vince Weaver <vincent.weaver@maine.edu>
Cc: stable@kernel.org # v4.18+
Fixes: 9aae1780e7 ("perf/x86/intel/uncore: Clean up client IMC uncore")
Link: https://lkml.kernel.org/r/20190227165729.1861-1-kan.liang@linux.intel.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>
 2019-03-09 14:10:31 +01:00
Alexander Shishkin 5768402fd9 perf/ring_buffer: Use high order allocations for AUX buffers optimistically 
Currently, the AUX buffer allocator will use high-order allocations
for PMUs that don't support hardware scatter-gather chaining to ensure
large contiguous blocks of pages, and always use an array of single
pages otherwise.

There is, however, a tangible performance benefit in using larger chunks
of contiguous memory even in the latter case, that comes from not having
to fetch the next page's address at every page boundary. In particular,
a task running under Intel PT on an Atom CPU shows 1.5%-2% less runtime
penalty with a single multi-page output region in snapshot mode (no PMI)
than with multiple single-page output regions, from ~6% down to ~4%. For
the snapshot mode it does make a difference as it is intended to run over
long periods of time.

For this reason, change the allocation policy to always optimistically
start with the highest possible order when allocating pages for the AUX
buffer, desceding until the allocation succeeds or order zero allocation
fails.

Signed-off-by: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Cc: Andy Lutomirski <luto@kernel.org>
Cc: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Borislav Petkov <bp@alien8.de>
Cc: Dave Hansen <dave.hansen@linux.intel.com>
Cc: H. Peter Anvin <hpa@zytor.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Rik van Riel <riel@surriel.com>
Cc: Stephane Eranian <eranian@google.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Vince Weaver <vincent.weaver@maine.edu>
Link: https://lkml.kernel.org/r/20190215114727.62648-2-alexander.shishkin@linux.intel.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>
 2019-03-09 14:10:30 +01:00
Nathan Chancellor 1f5d861f7f net: stmmac: Avoid one more sometimes uninitialized Clang warning 
When building with -Wsometimes-uninitialized, Clang warns:

drivers/net/ethernet/stmicro/stmmac/stmmac_ptp.c:111:2: error: variable
'ns' is used uninitialized whenever 'if' condition is false
[-Werror,-Wsometimes-uninitialized]
drivers/net/ethernet/stmicro/stmmac/stmmac_ptp.c:111:2: error: variable
'ns' is used uninitialized whenever '&&' condition is false
[-Werror,-Wsometimes-uninitialized]

Clang is concerned with the use of stmmac_do_void_callback (which
stmmac_get_systime wraps), as it may fail to initialize these values if
the if condition was ever false (meaning the callback doesn't exist).
It's not wrong because the callback is what initializes ns. While it's
unlikely that the callback is going to disappear at some point and make
that condition false, we can easily avoid this warning by zero
initializing the variable.

Link: https://github.com/ClangBuiltLinux/linux/issues/384
Fixes: df10317085 ("net: stmmac: Avoid sometimes uninitialized Clang warnings")
Suggested-by: Nick Desaulniers <ndesaulniers@google.com>
Signed-off-by: Nathan Chancellor <natechancellor@gmail.com>
Reviewed-by: Nick Desaulniers <ndesaulniers@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
 2019-03-08 23:20:22 -08:00
Andrew Lunn 7cbbee050c net: dsa: mv88e6xxx: Set correct interface mode for CPU/DSA ports 
By default, the switch driver is expected to configure CPU and DSA
ports to their maximum speed. For the 6341 and 6390 families, the
ports interface mode has to be configured as well. The 6390X range
support 10G ports using XAUI, while the 6341 and 6390 supports
2500BaseX, as their maximum speed.

Fixes: 787799a9d5 ("net: dsa: mv88e6xxx: Default ports 9/10 6390X CMODE to 1000BaseX")
Signed-off-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>
 2019-03-08 22:55:28 -08:00
David Howells 69ffaebb90 rxrpc: Fix client call queueing, waiting for channel 
rxrpc_get_client_conn() adds a new call to the front of the waiting_calls
queue if the connection it's going to use already exists.  This is bad as
it allows calls to get starved out.

Fix this by adding to the tail instead.

Also change the other enqueue point in the same function to put it on the
front (ie. when we have a new connection).  This makes the point that in
the case of a new connection the new call goes at the front (though it
doesn't actually matter since the queue should be unoccupied).

Fixes: 45025bceef ("rxrpc: Improve management and caching of client connection objects")
Signed-off-by: David Howells <dhowells@redhat.com>
Reviewed-by: Marc Dionne <marc.dionne@auristor.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
 2019-03-08 18:24:53 -08:00