Andreas reports kernel oops during rmmod of the br_netfilter module.
Hannes debugged the oops down to a NULL rt6info->rt6i_indev.
Problem is that br_netfilter has the nasty concept of adding a fake
rtable to skb->dst; this happens in a br_netfilter prerouting hook.
A second hook (in bridge LOCAL_IN) is supposed to remove these again
before the skb is handed up the stack.
However, on module unload hooks get unregistered which means an
skb could traverse the prerouting hook that attaches the fake_rtable,
while the 'fake rtable remove' hook gets removed from the hooklist
immediately after.
Fixes: 34666d467c ("netfilter: bridge: move br_netfilter out of the core")
Reported-by: Andreas Karis <akaris@redhat.com>
Debugged-by: Hannes Frederic Sowa <hannes@stressinduktion.org>
Signed-off-by: Florian Westphal <fw@strlen.de>
Acked-by: Pablo Neira Ayuso <pablo@netfilter.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
ip6_fragment, in case skb has a fraglist, checks if the
skb is cloned. If it is, it will move to the 'slow path' and allocates
new skbs for each fragment.
However, right before entering the slowpath loop, it updates the
nexthdr value of the last ipv6 extension header to NEXTHDR_FRAGMENT,
to account for the fragment header that will be inserted in the new
ipv6-fragment skbs.
In case original skb is cloned this munges nexthdr value of another
skb. Avoid this by doing the nexthdr update for each of the new fragment
skbs separately.
This was observed with tcpdump on a bridge device where netfilter ipv6
reassembly is active: tcpdump shows malformed fragment headers as
the l4 header (icmpv6, tcp, etc). is decoded as a fragment header.
Cc: Hannes Frederic Sowa <hannes@stressinduktion.org>
Reported-by: Andreas Karis <akaris@redhat.com>
Signed-off-by: Florian Westphal <fw@strlen.de>
Signed-off-by: David S. Miller <davem@davemloft.net>
Remove the WARNING message associated with multiple NMI handlers as
there are at least two that are legitimate. These are the KGDB and the
UV handlers and both want to be called if the NMI has not been claimed
by any other NMI handler.
Use of the UNKNOWN NMI call chain dramatically lowers the NMI call rate
when high frequency NMI tools are in use, notably the perf tools. It is
required on systems that cannot sustain a high NMI call rate without
adversely affecting the system operation.
Signed-off-by: Mike Travis <mike.travis@hpe.com>
Reviewed-by: Dimitri Sivanich <dimitri.sivanich@hpe.com>
Cc: Don Zickus <dzickus@redhat.com>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Russ Anderson <russ.anderson@hpe.com>
Cc: Frank Ramsay <frank.ramsay@hpe.com>
Cc: Tony Ernst <tony.ernst@hpe.com>
Link: http://lkml.kernel.org/r/20170307210841.730959611@asylum.americas.sgi.com
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Make sure to check the number of endpoints to avoid dereferencing a
NULL-pointer or accessing memory beyond the endpoint array should a
malicious device lack the expected endpoints.
The endpoints are specifically dereferenced in the i2400m_bootrom_init
path during probe (e.g. in i2400mu_tx_bulk_out).
Fixes: f398e4240f ("i2400m/USB: probe/disconnect, dev init/shutdown
and reset backends")
Cc: Inaky Perez-Gonzalez <inaky@linux.intel.com>
Signed-off-by: Johan Hovold <johan@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
Make sure to check the number of endpoints to avoid dereferencing a
NULL-pointer should a malicious device lack endpoints.
Fixes: cf7776dc05 ("[PATCH] isdn4linux: Siemens Gigaset drivers -
direct USB connection")
Cc: stable <stable@vger.kernel.org> # 2.6.17
Cc: Hansjoerg Lipp <hjlipp@web.de>
Signed-off-by: Johan Hovold <johan@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
Commit 2759647247 ("ipv6: fix ECMP route replacement") introduced a
loop that removes all siblings of an ECMP route that is being
replaced. However, this loop doesn't stop when it has replaced
siblings, and keeps removing other routes with a higher metric.
We also end up triggering the WARN_ON after the loop, because after
this nsiblings < 0.
Instead, stop the loop when we have taken care of all routes with the
same metric as the route being replaced.
Reproducer:
===========
#!/bin/sh
ip netns add ns1
ip netns add ns2
ip -net ns1 link set lo up
for x in 0 1 2 ; do
ip link add veth$x netns ns2 type veth peer name eth$x netns ns1
ip -net ns1 link set eth$x up
ip -net ns2 link set veth$x up
done
ip -net ns1 -6 r a 2000::/64 nexthop via fe80::0 dev eth0 \
nexthop via fe80::1 dev eth1 nexthop via fe80::2 dev eth2
ip -net ns1 -6 r a 2000::/64 via fe80::42 dev eth0 metric 256
ip -net ns1 -6 r a 2000::/64 via fe80::43 dev eth0 metric 2048
echo "before replace, 3 routes"
ip -net ns1 -6 r | grep -v '^fe80\|^ff00'
echo
ip -net ns1 -6 r c 2000::/64 nexthop via fe80::4 dev eth0 \
nexthop via fe80::5 dev eth1 nexthop via fe80::6 dev eth2
echo "after replace, only 2 routes, metric 2048 is gone"
ip -net ns1 -6 r | grep -v '^fe80\|^ff00'
Fixes: 2759647247 ("ipv6: fix ECMP route replacement")
Signed-off-by: Sabrina Dubroca <sd@queasysnail.net>
Acked-by: Nicolas Dichtel <nicolas.dichtel@6wind.com>
Reviewed-by: Xin Long <lucien.xin@gmail.com>
Reviewed-by: Michal Kubecek <mkubecek@suse.cz>
Signed-off-by: David S. Miller <davem@davemloft.net>
Subhransu reported that convert_art_to_tsc() isn't working for him.
The ART to TSC relation is only set up for systems which use the refined
TSC calibration. Systems with known TSC frequency (available via CPUID 15)
are not using the refined calibration and therefor the ART to TSC relation
is never established.
Add the setup to the known frequency init path which skips ART
calibration. The init code needs to be duplicated as for systems which use
refined calibration the ART setup must be delayed until calibration has
been done.
The problem has been there since the ART support was introdduced, but only
detected now because Subhransu tested the first time on hardware which has
TSC frequency enumerated via CPUID 15.
Note for stable: The conditional has changed from TSC_RELIABLE to
TSC_KNOWN_FREQUENCY.
[ tglx: Rewrote changelog and identified the proper 'Fixes' commit ]
Fixes: f9677e0f83 ("x86/tsc: Always Running Timer (ART) correlated clocksource")
Reported-by: "Prusty, Subhransu S" <subhransu.s.prusty@intel.com>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Cc: stable@vger.kernel.org
Cc: christopher.s.hall@intel.com
Cc: kevin.b.stanton@intel.com
Cc: john.stultz@linaro.org
Cc: akataria@vmware.com
Link: http://lkml.kernel.org/r/20170313145712.GI3312@twins.programming.kicks-ass.net
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
refcount_t type and corresponding API should be
used instead of atomic_t when the variable is used as
a reference counter. This allows to avoid accidental
refcounter overflows that might lead to use-after-free
situations.
Signed-off-by: Elena Reshetova <elena.reshetova@intel.com>
Signed-off-by: Hans Liljestrand <ishkamiel@gmail.com>
Signed-off-by: Kees Cook <keescook@chromium.org>
Signed-off-by: David Windsor <dwindsor@gmail.com>
Signed-off-by: Boris Ostrovsky <boris.ostrovsky@oracle.com>
gup_p4d_range() should call gup_pud_range(), not itself.
[ This was not noticed on x86: this is the HAVE_GENERIC_RCU_GUP code
used by arm[64] and powerpc - Linus ]
Fixes: c2febafc67 ("mm: convert generic code to 5-level paging")
Signed-off-by: Kirill A. Shutemov <kirill.shutemov@linux.intel.com>
Reported-by: Chris Packham <chris.packham@alliedtelesis.co.nz>
Reported-by: Anton Blanchard <anton@samba.org>
Acked-by: Michal Hocko <mhocko@suse.com>
Acked-by: Mark Rutland <mark.rutland@arm.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
In commit 003342a500 ("drm/i915: Keep track of active
forcewake domains in a bitmask") I forgot to adjust the
newly introduce fw_domains_active state across reset.
This caused the assert_forcewakes_inactive to trigger
during suspend and resume if there were user held
forcewakes.
v2: Bitmask checks are required since vfuncs are not
always present.
v3: Move bitmask tracking to get/put vfunc for simplicity.
(Chris Wilson)
Signed-off-by: Tvrtko Ursulin <tvrtko.ursulin@intel.com>
Fixes: 003342a500 ("drm/i915: Keep track of active forcewake domains in a bitmask")
Testcase: igt/drv_suspend/forcewake
Cc: Tvrtko Ursulin <tvrtko.ursulin@intel.com>
Cc: "Paneri, Praveen" <praveen.paneri@intel.com>
Cc: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Daniel Vetter <daniel.vetter@intel.com>
Cc: Jani Nikula <jani.nikula@linux.intel.com>
Cc: intel-gfx@lists.freedesktop.org
Cc: v4.10+ <stable@vger.kernel.org>
Reviewed-by: Chris Wilson <chris@chris-wilson.co.uk>
Link: http://patchwork.freedesktop.org/patch/msgid/20170310093249.4484-1-tvrtko.ursulin@linux.intel.com
(cherry picked from commit b847305080)
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
printks are slow so we should not be doing them from the vblank evade
critical section. These could explain why we sometimes seem to
blow past our 100 usec deadline.
The problem has been there ever since commit c331879ce8 ("drm/i915:
skylake sprite plane scaling using shared scalers.") but it may not have
been readily visible until commit e1edbd44e2 ("drm/i915: Complain
if we take too long under vblank evasion.") increased our chances
of noticing it.
Signed-off-by: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>
Cc: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: http://patchwork.freedesktop.org/patch/msgid/1488974407-25175-1-git-send-email-maarten.lankhorst@linux.intel.com
Fixes: c331879ce8 ("drm/i915: skylake sprite plane scaling using shared scalers")
Cc: <stable@vger.kernel.org> # v4.2+
Reviewed-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
[mlankhorst: Add missing tags, point to the correct offending commit]
(cherry picked from commit d38146b9ee)
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
It looks like we were incorrectly comparing vma->node against itself
instead of the target node, when evicting for a node on systems where we
need guard pages between regions with different cache domains. As a
consequence we can end up trying to needlessly evict neighbouring nodes,
even if they have the same cache domain, and if they were pinned we
would fail the eviction.
Fixes: 625d988acc ("drm/i915: Extract reserving space in the GTT to a helper")
Signed-off-by: Matthew Auld <matthew.auld@intel.com>
Cc: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Joonas Lahtinen <joonas.lahtinen@linux.intel.com>
Reviewed-by: Chris Wilson <chris@chris-wilson.co.uk>
Link: http://patchwork.freedesktop.org/patch/msgid/20170306235414.23407-3-matthew.auld@intel.com
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
(cherry picked from commit fe65cbdbc9)
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
When WB_registered flag is not set, wb_queue_work() skips queuing the
work, but does not perform the necessary clean up. In particular, if
work->auto_free is true, it should free the memory.
The leak condition can be reprouced by following these steps:
mount /dev/sdb /mnt/sdb
/* In qemu console: device_del sdb */
umount /dev/sdb
Above will result in a wb_queue_work() call on an unregistered wb and
thus leak memory.
Reported-by: John Sperbeck <jsperbeck@google.com>
Signed-off-by: Tahsin Erdogan <tahsin@google.com>
Reviewed-by: Jan Kara <jack@suse.cz>
Signed-off-by: Jens Axboe <axboe@fb.com>
In case cpu was unplugged, we need to make sure not to assume
that the tags for that cpu are still allocated. so check
for null tags when reinitializing a tagset.
Reported-by: Yi Zhang <yizhan@redhat.com>
Signed-off-by: Sagi Grimberg <sagi@grimberg.me>
Signed-off-by: Jens Axboe <axboe@fb.com>
Consistently use types from linux/types.h like in other uapi drm/*_drm.h
header files to fix the following drm/omap_drm.h userspace compilation
errors:
/usr/include/drm/omap_drm.h:36:2: error: unknown type name 'uint64_t'
uint64_t param; /* in */
/usr/include/drm/omap_drm.h:37:2: error: unknown type name 'uint64_t'
uint64_t value; /* in (set_param), out (get_param) */
/usr/include/drm/omap_drm.h:56:2: error: unknown type name 'uint32_t'
uint32_t bytes; /* (for non-tiled formats) */
/usr/include/drm/omap_drm.h:58:3: error: unknown type name 'uint16_t'
uint16_t width;
/usr/include/drm/omap_drm.h:59:3: error: unknown type name 'uint16_t'
uint16_t height;
/usr/include/drm/omap_drm.h:65:2: error: unknown type name 'uint32_t'
uint32_t flags; /* in */
/usr/include/drm/omap_drm.h:66:2: error: unknown type name 'uint32_t'
uint32_t handle; /* out */
/usr/include/drm/omap_drm.h:67:2: error: unknown type name 'uint32_t'
uint32_t __pad;
/usr/include/drm/omap_drm.h:77:2: error: unknown type name 'uint32_t'
uint32_t handle; /* buffer handle (in) */
/usr/include/drm/omap_drm.h:78:2: error: unknown type name 'uint32_t'
uint32_t op; /* mask of omap_gem_op (in) */
/usr/include/drm/omap_drm.h:82:2: error: unknown type name 'uint32_t'
uint32_t handle; /* buffer handle (in) */
/usr/include/drm/omap_drm.h:83:2: error: unknown type name 'uint32_t'
uint32_t op; /* mask of omap_gem_op (in) */
/usr/include/drm/omap_drm.h:88:2: error: unknown type name 'uint32_t'
uint32_t nregions;
/usr/include/drm/omap_drm.h:89:2: error: unknown type name 'uint32_t'
uint32_t __pad;
/usr/include/drm/omap_drm.h:93:2: error: unknown type name 'uint32_t'
uint32_t handle; /* buffer handle (in) */
/usr/include/drm/omap_drm.h:94:2: error: unknown type name 'uint32_t'
uint32_t pad;
/usr/include/drm/omap_drm.h:95:2: error: unknown type name 'uint64_t'
uint64_t offset; /* mmap offset (out) */
/usr/include/drm/omap_drm.h:102:2: error: unknown type name 'uint32_t'
uint32_t size; /* virtual size for mmap'ing (out) */
/usr/include/drm/omap_drm.h:103:2: error: unknown type name 'uint32_t'
uint32_t __pad;
Fixes: ef6503e891 ("drm: Kbuild: add omap_drm.h to the installed headers")
Signed-off-by: Dmitry V. Levin <ldv@altlinux.org>
Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
omap_gem_dmabuf_mmap() returns an error (with a WARN) when called for a
buffer which is allocated with dma_alloc_*(). This prevents dmabuf mmap
from working on SoCs without DMM, e.g. AM4 and OMAP3.
I could not find any reason for omap_gem_dmabuf_mmap() rejecting such
buffers, and just removing the if() fixes the limitation.
Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
The interrupt line used for the watchdog is 12, according to the official
Intel Edison BSP code.
And indeed after fixing it we start getting an interrupt and thus the
watchdog starts working again:
[ 191.699951] Kernel panic - not syncing: Kernel Watchdog
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Cc: Borislav Petkov <bp@alien8.de>
Cc: David Cohen <david.a.cohen@linux.intel.com>
Cc: H. Peter Anvin <hpa@zytor.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Fixes: 78a3bb9e40 ("x86: intel-mid: add watchdog platform code for Merrifield")
Link: http://lkml.kernel.org/r/20170312150744.45493-1-andriy.shevchenko@linux.intel.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Improve bpf_{prog,jit_binary}_{un,}lock_ro() by throwing a
one-time warning in case of an error when the image couldn't
be set read-only, and also mark struct bpf_prog as locked when
bpf_prog_lock_ro() was called.
Reason for the latter is that bpf_prog_unlock_ro() is called from
various places including error paths, and we shouldn't mess with
page attributes when really not needed.
For bpf_jit_binary_unlock_ro() this is not needed as jited flag
implicitly indicates this, thus for archs with ARCH_HAS_SET_MEMORY
we're guaranteed to have a previously locked image. Overall, this
should also help us to identify any further potential issues with
set_memory_*() helpers.
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Acked-by: Alexei Starovoitov <ast@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
Recent merge of 'linux-kselftest-4.11-rc1' tree broke bpf test build.
None of the tests were building and test_verifier.c had tons of compiler errors.
Fix it and add #ifdef CAP_IS_SUPPORTED to support old versions of libcap.
Tested on centos 6.8 and 7
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Acked-by: Daniel Borkmann <daniel@iogearbox.net>
Tested-by: Daniel Borkmann <daniel@iogearbox.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
Multipath routes can be rendered usesless when a device in one of the
paths is deleted. For example:
$ ip -f mpls ro ls
100
nexthop as to 200 via inet 172.16.2.2 dev virt12
nexthop as to 300 via inet 172.16.3.2 dev br0
101
nexthop as to 201 via inet6 2000:2::2 dev virt12
nexthop as to 301 via inet6 2000:3::2 dev br0
$ ip li del br0
When br0 is deleted the other hop is not considered in
mpls_select_multipath because of the alive check -- rt_nhn_alive
is 0.
rt_nhn_alive is decremented once in mpls_ifdown when the device is taken
down (NETDEV_DOWN) and again when it is deleted (NETDEV_UNREGISTER). For
a 2 hop route, deleting one device drops the alive count to 0. Since
devices are taken down before unregistering, the decrement on
NETDEV_UNREGISTER is redundant.
Fixes: c89359a42e ("mpls: support for dead routes")
Signed-off-by: David Ahern <dsa@cumulusnetworks.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
In some cases during XenBus disconnect event handling and subsequent
queue resource release there may be some TX handlers active on
other processors. Use RCU in order to synchronize with them.
Signed-off-by: Igor Druzhinin <igor.druzhinin@citrix.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
When the mpls_router module is unloaded, mpls routes are deleted but
notifications are not sent to userspace leaving userspace caches
out of sync. Add the call to mpls_notify_route in mpls_net_exit as
routes are freed.
Fixes: 0189197f44 ("mpls: Basic routing support")
Signed-off-by: David Ahern <dsa@cumulusnetworks.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
It wasn't clear if the 'forwarding' setting needs to be enabled on the
interface that packets are received from, or on the interface that
packets are forwarded to, or both.
In fact (according to my code reading) the setting is relevant on the
interface that packets are received from, so this change updates the doc
to say that.
Signed-off-by: Neil Jerram <neil@tigera.io>
Signed-off-by: David S. Miller <davem@davemloft.net>
Move the send indirection table from the inner device (netvsc)
to the network device context.
It is possible that netvsc_device is not present (remove in progress).
This solves potential use after free issues when packet is being
created during MTU change, shutdown, or queue count changes.
Fixes: d8e18ee0fa ("netvsc: enhance transmit select_queue")
Signed-off-by: Stephen Hemminger <sthemmin@microsoft.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
When a network interface controlled by the aquantia ethernet driver is brought
down a warning is output in dmesg (see below).
The problem is that aq_pci_func_free_irqs() is calling free_irq() before it is
calling irq_set_affinity_hint().
WARNING: CPU: 4 PID: 10068 at kernel/irq/manage.c:1503 __free_irq+0x24d/0x2b0
<snip>
Call Trace:
dump_stack+0x63/0x87
__warn+0xd1/0xf0
warn_slowpath_null+0x1d/0x20
__free_irq+0x24d/0x2b0
free_irq+0x39/0x90
aq_pci_func_free_irqs+0x52/0xa0 [atlantic]
aq_nic_stop+0xca/0xd0 [atlantic]
aq_ndev_close+0x1d/0x40 [atlantic]
__dev_close_many+0x99/0x100
__dev_close+0x67/0xb0
<snip>
Fixes: 36a4a50f40 ("net: ethernet: aquantia: switch to pci_alloc_irq_vectors")
Cc: Christoph Hellwig <hch@lst.de>
Cc: Pavel Belous <pavel.belous@aquantia.com>
Signed-off-by: David Arcari <darcari@redhat.com>
Tested-by: Pavel Belous <pavel.belous@aquantia.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
With the detection introduced in the previous patches, we don't need
these static DMI-based quirks anymore.
This reverts the following commits:
56a37a7200 "asus-wmi: Add quirk_no_rfkill_wapf4 for the Asus X456UA"
a961a285b4 "asus-wmi: Add quirk_no_rfkill_wapf4 for the Asus X456UF"
6b7ff2af52 "asus-wmi: Add quirk_no_rfkill for the Asus Z550MA"
02db9ff7af "asus-wmi: Add quirk_no_rfkill for the Asus U303LB"
2d735244b7 "asus-wmi: Add quirk_no_rfkill for the Asus N552VW"
a977e59c0c "asus-wmi: Create quirk for airplane_mode LED"
Signed-off-by: João Paulo Rechi Vita <jprvita@endlessm.com>
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
[dvhart: minor commit message corrections]
Signed-off-by: Darren Hart (VMware) <dvhart@infradead.org>
Pull s390 fixes from Martin Schwidefsky:
- four patches to get the new cputime code in shape for s390
- add the new statx system call
- a few bug fixes
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux:
s390: wire up statx system call
KVM: s390: Fix guest migration for huge guests resulting in panic
s390/ipl: always use load normal for CCW-type re-IPL
s390/timex: micro optimization for tod_to_ns
s390/cputime: provide archicture specific cputime_to_nsecs
s390/cputime: reset all accounting fields on fork
s390/cputime: remove last traces of cputime_t
s390: fix in-kernel program checks
s390/crypt: fix missing unlock in ctr_paes_crypt on error path
Pull x86 fixes from Thomas Gleixner:
- a fix for the kexec/purgatory regression which was introduced in the
merge window via an innocent sparse fix. We could have reverted that
commit, but on deeper inspection it turned out that the whole
machinery is neither documented nor robust. So a proper cleanup was
done instead
- the fix for the TLB flush issue which was discovered recently
- a simple typo fix for a reboot quirk
* 'x86-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
x86/tlb: Fix tlb flushing when lguest clears PGE
kexec, x86/purgatory: Unbreak it and clean it up
x86/reboot/quirks: Fix typo in ASUS EeeBook X205TA reboot quirk
Pull irq fixes from Thomas Gleixner:
- a workaround for a GIC erratum
- a missing stub function for CONFIG_IRQDOMAIN=n
- fixes for a couple of type inconsistencies
* 'irq-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
irqchip/crossbar: Fix incorrect type of register size
irqchip/gicv3-its: Add workaround for QDF2400 ITS erratum 0065
irqdomain: Add empty irq_domain_check_msi_remap
irqchip/crossbar: Fix incorrect type of local variables
Fengguang reported random corruptions from various locations on x86-32
after commits d2852a2240 ("arch: add ARCH_HAS_SET_MEMORY config") and
9d876e79df ("bpf: fix unlocking of jited image when module ronx not set")
that uses the former. While x86-32 doesn't have a JIT like x86_64, the
bpf_prog_lock_ro() and bpf_prog_unlock_ro() got enabled due to
ARCH_HAS_SET_MEMORY, whereas Fengguang's test kernel doesn't have module
support built in and therefore never had the DEBUG_SET_MODULE_RONX setting
enabled.
After investigating the crashes further, it turned out that using
set_memory_ro() and set_memory_rw() didn't have the desired effect, for
example, setting the pages as read-only on x86-32 would still let
probe_kernel_write() succeed without error. This behavior would manifest
itself in situations where the vmalloc'ed buffer was accessed prior to
set_memory_*() such as in case of bpf_prog_alloc(). In cases where it
wasn't, the page attribute changes seemed to have taken effect, leading to
the conclusion that a TLB invalidate didn't happen. Moreover, it turned out
that this issue reproduced with qemu in "-cpu kvm64" mode, but not for
"-cpu host". When the issue occurs, change_page_attr_set_clr() did trigger
a TLB flush as expected via __flush_tlb_all() through cpa_flush_range(),
though.
There are 3 variants for issuing a TLB flush: invpcid_flush_all() (depends
on CPU feature bits X86_FEATURE_INVPCID, X86_FEATURE_PGE), cr4 based flush
(depends on X86_FEATURE_PGE), and cr3 based flush. For "-cpu host" case in
my setup, the flush used invpcid_flush_all() variant, whereas for "-cpu
kvm64", the flush was cr4 based. Switching the kvm64 case to cr3 manually
worked fine, and further investigating the cr4 one turned out that
X86_CR4_PGE bit was not set in cr4 register, meaning the
__native_flush_tlb_global_irq_disabled() wrote cr4 twice with the same
value instead of clearing X86_CR4_PGE in the first write to trigger the
flush.
It turned out that X86_CR4_PGE was cleared from cr4 during init from
lguest_arch_host_init() via adjust_pge(). The X86_FEATURE_PGE bit is also
cleared from there due to concerns of using PGE in guest kernel that can
lead to hard to trace bugs (see bff672e630 ("lguest: documentation V:
Host") in init()). The CPU feature bits are cleared in dynamic
boot_cpu_data, but they never propagated to __flush_tlb_all() as it uses
static_cpu_has() instead of boot_cpu_has() for testing which variant of TLB
flushing to use, meaning they still used the old setting of the host
kernel.
Clearing via setup_clear_cpu_cap(X86_FEATURE_PGE) so this would propagate
to static_cpu_has() checks is too late at this point as sections have been
patched already, so for now, it seems reasonable to switch back to
boot_cpu_has(X86_FEATURE_PGE) as it was prior to commit c109bf9599
("x86/cpufeature: Remove cpu_has_pge"). This lets the TLB flush trigger via
cr3 as originally intended, properly makes the new page attributes visible
and thus fixes the crashes seen by Fengguang.
Fixes: c109bf9599 ("x86/cpufeature: Remove cpu_has_pge")
Reported-by: Fengguang Wu <fengguang.wu@intel.com>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Cc: bp@suse.de
Cc: Kees Cook <keescook@chromium.org>
Cc: "David S. Miller" <davem@davemloft.net>
Cc: netdev@vger.kernel.org
Cc: Rusty Russell <rusty@rustcorp.com.au>
Cc: Alexei Starovoitov <ast@kernel.org>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: lkp@01.org
Cc: Laura Abbott <labbott@redhat.com>
Cc: stable@vger.kernel.org
Link: http://lkml.kernrl.org/r/20170301125426.l4nf65rx4wahohyl@wfg-t540p.sh.intel.com
Link: http://lkml.kernel.org/r/25c41ad9eca164be4db9ad84f768965b7eb19d9e.1489191673.git.daniel@iogearbox.net
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Commit 79bd99596b ("blk: improve order of bio handling in generic_make_request()")
changed current->bio_list so that it did not contain *all* of the
queued bios, but only those submitted by the currently running
make_request_fn.
There are two places which walk the list and requeue selected bios,
and others that check if the list is empty. These are no longer
correct.
So redefine current->bio_list to point to an array of two lists, which
contain all queued bios, and adjust various code to test or walk both
lists.
Signed-off-by: NeilBrown <neilb@suse.com>
Fixes: 79bd99596b ("blk: improve order of bio handling in generic_make_request()")
Signed-off-by: Jens Axboe <axboe@fb.com>
ARM updates from Marc Zyngier:
"vgic updates:
- Honour disabling the ITS
- Don't deadlock when deactivating own interrupts via MMIO
- Correctly expose the lact of IRQ/FIQ bypass on GICv3
I/O virtualization:
- Make KVM_CAP_NR_MEMSLOTS big enough for large guests with
many PCIe devices
General bug fixes:
- Gracefully handle exception generated with syndroms that
the host doesn't understand
- Properly invalidate TLBs on VHE systems"
x86:
- improvements in emulation of VMCLEAR, VMX MSR bitmaps, and VCPU reset
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Merge tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm
Pull KVM fixes from Radim Krčmář:
"ARM updates from Marc Zyngier:
- vgic updates:
- Honour disabling the ITS
- Don't deadlock when deactivating own interrupts via MMIO
- Correctly expose the lact of IRQ/FIQ bypass on GICv3
- I/O virtualization:
- Make KVM_CAP_NR_MEMSLOTS big enough for large guests with many
PCIe devices
- General bug fixes:
- Gracefully handle exception generated with syndroms that the host
doesn't understand
- Properly invalidate TLBs on VHE systems
x86:
- improvements in emulation of VMCLEAR, VMX MSR bitmaps, and VCPU
reset
* tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm:
KVM: nVMX: do not warn when MSR bitmap address is not backed
KVM: arm64: Increase number of user memslots to 512
KVM: arm/arm64: Remove KVM_PRIVATE_MEM_SLOTS definition that are unused
KVM: arm/arm64: Enable KVM_CAP_NR_MEMSLOTS on arm/arm64
KVM: Add documentation for KVM_CAP_NR_MEMSLOTS
KVM: arm/arm64: VGIC: Fix command handling while ITS being disabled
arm64: KVM: Survive unknown traps from guests
arm: KVM: Survive unknown traps from guests
KVM: arm/arm64: Let vcpu thread modify its own active state
KVM: nVMX: reset nested_run_pending if the vCPU is going to be reset
kvm: nVMX: VMCLEAR should not cause the vCPU to shut down
KVM: arm/arm64: vgic-v3: Don't pretend to support IRQ/FIQ bypass
arm64: KVM: VHE: Clear HCR_TGE when invalidating guest TLBs
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Merge tag 'extable-fix' of git://git.kernel.org/pub/scm/linux/kernel/git/paulg/linux
Pull extable.h fix from Paul Gortmaker:
"Fixup for arch/score after extable.h introduction.
It seems that Guenter is the only one on the planet doing builds for
arch/score -- we don't have compile coverage for it in linux-next or
in the kbuild-bot either. Guenter couldn't even recall where he got
his toolchain, but was kind enough to share it with me so I could
validate this change and also add arch/score to my build coverage.
I sat on this a bit in case there was any other fallout in other arch
dirs, but since this still seems to be the only one, I might as well
send it on its way"
* tag 'extable-fix' of git://git.kernel.org/pub/scm/linux/kernel/git/paulg/linux:
score: Fix implicit includes now failing build after extable change
This reverts commit 7b9f1d16e6 ("clocksource/drivers/tcb_clksrc: Use
32 bit tcb as sched_clock"). In the current state, the kernel warns
against a late registration of the new sched_clock, the printk clock
resets after only a few minutes, and it seems that scheduling can be
affected as well.
Signed-off-by: Romain Izard <romain.izard.pro@gmail.com>
Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>
getrandom(2). It's faster and arguably more secure than cut-down MD5
that we had been using.
Also do some code cleanup.
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Merge tag 'random_for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tytso/random
Pull random updates from Ted Ts'o:
"Change get_random_{int,log} to use the CRNG used by /dev/urandom and
getrandom(2). It's faster and arguably more secure than cut-down MD5
that we had been using.
Also do some code cleanup"
* tag 'random_for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tytso/random:
random: move random_min_urandom_seed into CONFIG_SYSCTL ifdef block
random: convert get_random_int/long into get_random_u32/u64
random: use chacha20 for get_random_int/long
random: fix comment for unused random_min_urandom_seed
random: remove variable limit
random: remove stale urandom_init_wait
random: remove stale maybe_reseed_primary_crng
After changing from module.h to extable.h, score builds fail with:
arch/score/kernel/traps.c: In function 'do_ri':
arch/score/kernel/traps.c:248:4: error: implicit declaration of function 'user_disable_single_step'
arch/score/mm/extable.c: In function 'fixup_exception':
arch/score/mm/extable.c:32:38: error: dereferencing pointer to incomplete type
arch/score/mm/extable.c:34:24: error: dereferencing pointer to incomplete type
because extable.h doesn't drag in the same amount of headers as the
module.h did. Add in the headers which were implicitly expected.
Fixes: 90858794c9 ("module.h: remove extable.h include now users have migrated")
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
[PG: tweak commit log; refresh for sched header refactoring.]
Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com>
The check for duplicate processor ids happens at boot time based on the
ACPI table contents, but the final sanity checks for a processor happen
at hotplug time.
At hotplug time, where the physical information is available, which might
differ from the ACPI table information, a check for duplicate processor
ids is missing.
Add it to the hotplug checks and rename the function so it better
reflects its purpose.
Signed-off-by: Dou Liyang <douly.fnst@cn.fujitsu.com>
Tested-by: Xiaolong Ye <xiaolong.ye@intel.com>
Cc: rjw@rjwysocki.net
Cc: linux-acpi@vger.kernel.org
Cc: guzheng1@huawei.com
Cc: izumi.taku@jp.fujitsu.com
Cc: lenb@kernel.org
Link: http://lkml.kernel.org/r/1488528147-2279-6-git-send-email-douly.fnst@cn.fujitsu.com
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
The following commits:
f7c28833c2 ("x86/acpi: Enable acpi to register all possible cpus at
boot time") and 8f54969dc8 ("x86/acpi: Introduce persistent storage
for cpuid <-> apicid mapping")
... registered all the possible CPUs at boot time via ACPI tables to
make the mapping of cpuid <-> apicid fixed. Both enabled and disabled
CPUs could have a logical CPU ID after boot time.
But, ACPI tables are unreliable. the number amd order of Local APIC
entries which depends on the firmware is often inconsistent with the
physical devices. Even if they are consistent, The disabled CPUs which
take up some logical CPU IDs will also make the order discontinuous.
Revert the part of disabled CPUs registration, keep the allocation
logic of logical CPU IDs and also keep some code location changes.
Signed-off-by: Dou Liyang <douly.fnst@cn.fujitsu.com>
Tested-by: Xiaolong Ye <xiaolong.ye@intel.com>
Cc: rjw@rjwysocki.net
Cc: linux-acpi@vger.kernel.org
Cc: guzheng1@huawei.com
Cc: izumi.taku@jp.fujitsu.com
Cc: lenb@kernel.org
Link: http://lkml.kernel.org/r/1488528147-2279-4-git-send-email-douly.fnst@cn.fujitsu.com
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Revert: dc6db24d24 ("x86/acpi: Set persistent cpuid <-> nodeid mapping when booting")
The mapping of "cpuid <-> nodeid" is established at boot time via ACPI
tables to keep associations of workqueues and other node related items
consistent across cpu hotplug.
But, ACPI tables are unreliable and failures with that boot time mapping
have been reported on machines where the ACPI table and the physical
information which is retrieved at actual hotplug is inconsistent.
Revert the mapping implementation so it can be replaced with a less error
prone approach.
Signed-off-by: Dou Liyang <douly.fnst@cn.fujitsu.com>
Tested-by: Xiaolong Ye <xiaolong.ye@intel.com>
Cc: rjw@rjwysocki.net
Cc: linux-acpi@vger.kernel.org
Cc: guzheng1@huawei.com
Cc: izumi.taku@jp.fujitsu.com
Cc: lenb@kernel.org
Link: http://lkml.kernel.org/r/1488528147-2279-2-git-send-email-douly.fnst@cn.fujitsu.com
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Here are 2 bugfixes for tty stuff for 4.11-rc2. One of them resolves
the pretty bad bug in the n_hdlc code that Alexander Popov found and
fixed and has been reported everywhere. The other just fixes a samsung
serial driver issue when DMA fails on some systems.
Both have been in linux-next with no reported issues.
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Merge tag 'tty-4.11-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty
Pull tty/serial fixes frpm Greg KH:
"Here are two bugfixes for tty stuff for 4.11-rc2.
One of them resolves the pretty bad bug in the n_hdlc code that
Alexander Popov found and fixed and has been reported everywhere. The
other just fixes a samsung serial driver issue when DMA fails on some
systems.
Both have been in linux-next with no reported issues"
* tag 'tty-4.11-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty:
serial: samsung: Continue to work if DMA request fails
tty: n_hdlc: get rid of racy n_hdlc.tbuf
Here are two small build warning fixes for some staging drivers that
Arnd has found on his valiant quest to get the kernel to build properly
with no warnings. Both of these have been in linux-next this week and
resolve the reported issues.
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Merge tag 'staging-4.11-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/staging
Pull staging driver fixes from Greg KH:
"Here are two small build warning fixes for some staging drivers that
Arnd has found on his valiant quest to get the kernel to build
properly with no warnings.
Both of these have been in linux-next this week and resolve the
reported issues"
* tag 'staging-4.11-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/staging:
staging: octeon: remove unused variable
staging/vc04_services: add CONFIG_OF dependency
Here is a number of different USB fixes for 4.11-rc2. Seems like there
were a lot of unresolved issues that people have been finding for this
subsystem, and a bunch of good security auditing happening as well from
Johan Hovold. There's the usual batch of gadget driver fixes and xhci
issues resolved as well.
All of these have been in linux-next with no reported issues.
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Merge tag 'usb-4.11-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb
Pull USB fixes from Greg KH:
"Here is a number of different USB fixes for 4.11-rc2.
Seems like there were a lot of unresolved issues that people have been
finding for this subsystem, and a bunch of good security auditing
happening as well from Johan Hovold. There's the usual batch of gadget
driver fixes and xhci issues resolved as well.
All of these have been in linux-next with no reported issues"
* tag 'usb-4.11-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb: (35 commits)
usb: host: xhci-plat: Fix timeout on removal of hot pluggable xhci controllers
usb: host: xhci-dbg: HCIVERSION should be a binary number
usb: xhci: remove dummy extra_priv_size for size of xhci_hcd struct
usb: xhci-mtk: check hcc_params after adding primary hcd
USB: serial: digi_acceleport: fix OOB-event processing
MAINTAINERS: usb251xb: remove reference inexistent file
doc: dt-bindings: usb251xb: mark reg as required
usb: usb251xb: dt: add unit suffix to oc-delay and power-on-time
usb: usb251xb: remove max_{power,current}_{sp,bp} properties
usb-storage: Add ignore-residue quirk for Initio INIC-3619
USB: iowarrior: fix NULL-deref in write
USB: iowarrior: fix NULL-deref at probe
usb: phy: isp1301: Add OF device ID table
usb: ohci-at91: Do not drop unhandled USB suspend control requests
USB: serial: safe_serial: fix information leak in completion handler
USB: serial: io_ti: fix information leak in completion handler
USB: serial: omninet: drop open callback
USB: serial: omninet: fix reference leaks at open
USB: serial: io_ti: fix NULL-deref in interrupt callback
usb: dwc3: gadget: make to increment req->remaining in all cases
...
- Add a get_direction() function to the qcom driver.
- Fix two pin names in the uniphier driver.
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Merge tag 'pinctrl-v4.11-2' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-pinctrl
Pull pinctrl fixes from Linus Walleij:
"Two smaller pin control fixes for the v4.11 series:
- Add a get_direction() function to the qcom driver
- Fix two pin names in the uniphier driver"
* tag 'pinctrl-v4.11-2' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-pinctrl:
pinctrl: uniphier: change pin names of aio/xirq for LD11
pinctrl: qcom: add get_direction function
Florian Westphal