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Don't try to guess what the errors from pci_irq_alloc_vectors mean, as
that's too fragile. Instead always try allocating a single vector
when multi-MSI mode fails. This makes various intel Desktop and
Laptop CPUs use MSI again.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Reported-by: Michael Marley <michael@michaelmarley.com>
Tested-by: Michael Marley <michael@michaelmarley.com>
Fixes: 0b9e2988ab22 ("ahci: use pci_alloc_irq_vectors")
Signed-off-by: Tejun Heo <tj@kernel.org>
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Revert commit 2c85025c75df (ACPI: Execute _PTS before system reboot)
as it is reported to cause poweroff and reboot to hang on Dell
Latitude E7250.
Link: https://bugzilla.kernel.org/show_bug.cgi?id=187061
Reported-by: Gianpaolo <gianpaoloc@gmail.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
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Commit 3105f234e0aba43e44e277c20f9b32ee8add43d4 replaced module
cpu id table with a cpu feature check, which is logically correct.
But we need the module device table to allow module auto loading.
Cc: stable@vger.kernel.org # 4.8
Fixes:3105f234 thermal/powerclamp: correct cpu support check
Signed-off-by: Jacob Pan <jacob.jun.pan@linux.intel.com>
Signed-off-by: Zhang Rui <rui.zhang@intel.com>
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NMI stack dumps are bracketed by the following tags:
<NMI>
...
<EOE>
The ending tag is kind of confusing if you don't already know what "EOE"
means (end of exception). The same ending tag is also used to mark the
end of all other exceptions' stacks. For example:
<#DF>
...
<EOE>
And similarly, "EOI" is used as the ending tag for interrupts:
<IRQ>
...
<EOI>
Change the tags to be more comprehensible by making them symmetrical and
more XML-esque:
<NMI>
...
</NMI>
<#DF>
...
</#DF>
<IRQ>
...
</IRQ>
Signed-off-by: Josh Poimboeuf <jpoimboe@redhat.com>
Acked-by: Frederic Weisbecker <fweisbec@gmail.com>
Acked-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Cc: Andy Lutomirski <luto@kernel.org>
Cc: Borislav Petkov <bp@alien8.de>
Cc: Brian Gerst <brgerst@gmail.com>
Cc: Denys Vlasenko <dvlasenk@redhat.com>
Cc: H. Peter Anvin <hpa@zytor.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Link: http://lkml.kernel.org/r/180196e3754572540b595bc56b947d43658979a7.1479491159.git.jpoimboe@redhat.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>
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The token table passed into match_token() must be null-terminated, which
it currently is not in the perf's address filter string parser, as caught
by Vince's perf_fuzzer and KASAN.
It doesn't blow up otherwise because of the alignment padding of the table
to the next element in the .rodata, which is luck.
Fixing by adding a null-terminator to the token table.
Reported-by: Vince Weaver <vincent.weaver@maine.edu>
Tested-by: Vince Weaver <vincent.weaver@maine.edu>
Signed-off-by: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Acked-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Cc: Arnaldo Carvalho de Melo <acme@kernel.org>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: dvyukov@google.com
Cc: stable@vger.kernel.org # v4.7+
Fixes: 375637bc524 ("perf/core: Introduce address range filtering")
Link: http://lkml.kernel.org/r/877f81f264.fsf@ashishki-desk.ger.corp.intel.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>
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Let's use the of_io_request_and_map() API so that the frame
region is protected and shows up in /proc/iomem.
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>
Acked-by: Marc Zyngier <marc.zyngier@arm.com>
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The "arm,no-tick-in-suspend" property was introduced to note
implementations where the system counter does not quite follow the ARM
specification that it "must be implemented in an always-on power
domain".
Particularly, RK3399's counter stops ticking when we switch from the
24MHz clock to the 32KHz clock in low-power suspend, so let's mark it as
such.
Signed-off-by: Brian Norris <briannorris@chromium.org>
Reviewed-by: Douglas Anderson <dianders@chromium.org>
Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>
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When dma->start is failed,then it has to fall back to PIO mode
for current transfer.
But Host controller was already set to bits relevant to DMA operation.
If needs to use the PIO mode, Host controller has to stop the DMA
operation. (It's more stable than now.)
When it occurred error, it's not running any request.
Fixes: 3fc7eaef44db ("mmc: dw_mmc: Add external dma interface support")
Reported-by: Marek Szyprowski <m.szyprowski@samsung.com>
Signed-off-by: Jaehoon Chung <jh80.chung@samsung.com>
Reviewed-by: Shawn Lin <shawn.lin@rock-chips.com>
Cc: <stable@vger.kernel.org> # v4.3+
Signed-off-by: Jaehoon Chung <jh80.chung@samsung.com>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
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Rename the watchdog platform library file to explicitly show that is used only
on Intel Merrifield platforms.
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Link: http://lkml.kernel.org/r/20161118172723.179761-1-andriy.shevchenko@linux.intel.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>
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The ARM specifies that the system counter "must be implemented in an
always-on power domain," and so we try to use the counter as a source of
timekeeping across suspend/resume. Unfortunately, some SoCs (e.g.,
Rockchip's RK3399) do not keep the counter ticking properly when
switched from their high-power clock to the lower-power clock used in
system suspend. Support this quirk by adding a new device tree property.
Signed-off-by: Brian Norris <briannorris@chromium.org>
Reviewed-by: Douglas Anderson <dianders@chromium.org>
Acked-by: Marc Zyngier <marc.zyngier@arm.com>
Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>
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Since the bootloader may load the compressed x86 kernel at any address,
it should always be built as PIE, not just when CONFIG_RELOCATABLE=y.
Otherwise, linker in binutils 2.27 will optimize GOT load into the
absolute address when building the compressed x86 kernel as a non-PIE
executable.
Signed-off-by: H.J. Lu <hjl.tools@gmail.com>
Cc: Andy Lutomirski <luto@kernel.org>
Cc: Borislav Petkov <bp@alien8.de>
Cc: Brian Gerst <brgerst@gmail.com>
Cc: Denys Vlasenko <dvlasenk@redhat.com>
Cc: H. Peter Anvin <hpa@zytor.com>
Cc: Josh Poimboeuf <jpoimboe@redhat.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: linux-kernel@vger.kernel.org
[ Small wording changes. ]
Signed-off-by: Ingo Molnar <mingo@kernel.org>
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So adding thresholding_en et al was a good thing for removing the
per-CPU thresholding callback, i.e., threshold_cpu_callback.
But, in order for it to work and especially that test in
mce_threshold_create_device() so that all thresholding banks get
properly created and not the whole thing to fail with a NULL ptr
dereference at mce_cpu_pre_down() when we offline the CPUs, we need to
set the thresholding_en flag *before* we start creating the devices.
Yap, it failed because thresholding_en wasn't set at the time
we were creating the banks so we didn't create any and then at
mce_cpu_pre_down() -> mce_threshold_remove_device() time, we would blow
up.
And the fix is actually easy: we have thresholding on the system when we
have managed to set the thresholding vector to amd_threshold_interrupt()
earlier in mce_amd_feature_init() while we were picking apart the
thresholding banks and what is set and what not.
So let's do that.
Signed-off-by: Borislav Petkov <bp@suse.de>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Yazen Ghannam <Yazen.Ghannam@amd.com>
Fixes: 4d7b02d58c40 ("x86/mcheck: Split threshold_cpu_callback into two callbacks")
Link: http://lkml.kernel.org/r/20161119103402.5227-1-bp@alien8.de
Signed-off-by: Ingo Molnar <mingo@kernel.org>
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Watchdog device in Intel Tangier relies on SCU to be present. It uses the SCU
IPC channel to send commands and receive responses. If watchdog driver is
initialized quite before SCU and a command has been sent the result is always
an error like the following:
intel_mid_wdt: Error stopping watchdog: 0xffffffed
Register watchdog device whne SCU is ready to avoid described issue.
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Link: http://lkml.kernel.org/r/20161118165224.175514-1-andriy.shevchenko@linux.intel.com
[ Small cleanups. ]
Signed-off-by: Ingo Molnar <mingo@kernel.org>
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Robert O'Callahan reported that after an execve PTRACE_GETREGSET
NT_X86_XSTATE continues to return the pre-exec register values
until the exec'ed task modifies FPU state.
The test code is at:
https://bugzilla.redhat.com/attachment.cgi?id=1164286.
What is happening is fpu__clear() does not properly clear fpstate.
Fix it by doing just that.
Reported-by: Robert O'Callahan <robert@ocallahan.org>
Signed-off-by: Yu-cheng Yu <yu-cheng.yu@intel.com>
Cc: <stable@vger.kernel.org>
Cc: Andy Lutomirski <luto@kernel.org>
Cc: Borislav Petkov <bp@suse.de>
Cc: David Hansen <dave.hansen@linux.intel.com>
Cc: Fenghua Yu <fenghua.yu@intel.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Ravi V. Shankar <ravi.v.shankar@intel.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Link: http://lkml.kernel.org/r/1479402695-6553-1-git-send-email-yu-cheng.yu@intel.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>
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Currently the wake_q data structure is defined by the WAKE_Q() macro.
This macro, however, looks like a function doing something as "wake" is
a verb. Even checkpatch.pl was confused as it reported warnings like
WARNING: Missing a blank line after declarations
#548: FILE: kernel/futex.c:3665:
+ int ret;
+ WAKE_Q(wake_q);
This patch renames the WAKE_Q() macro to DEFINE_WAKE_Q() which clarifies
what the macro is doing and eliminates the checkpatch.pl warnings.
Signed-off-by: Waiman Long <longman@redhat.com>
Acked-by: Davidlohr Bueso <dave@stgolabs.net>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Link: http://lkml.kernel.org/r/1479401198-1765-1-git-send-email-longman@redhat.com
[ Resolved conflict and added missing rename. ]
Signed-off-by: Ingo Molnar <mingo@kernel.org>
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Linux will have all kinds of sporadic problems on systems that don't
have the CPUID instruction unless CONFIG_M486=y. In particular,
sync_core() will explode.
I believe that these kernels had a better chance of working before
commit 05fb3c199bb0 ("x86/boot: Initialize FPU and X86_FEATURE_ALWAYS
even if we don't have CPUID"). That commit inadvertently fixed a
serious bug: we used to fail to detect the FPU if CPUID wasn't
present. Because we also used to forget to set X86_FEATURE_ALWAYS, we
end up with no cpu feature bits set at all. This meant that
alternative patching didn't do anything and, if paravirt was disabled,
we could plausibly finish the entire boot process without calling
sync_core().
Rather than trying to work around these issues, just have the kernel
fail loudly if it's running on a CPUID-less 486, doesn't have CPUID,
and doesn't have CONFIG_M486 set.
Reported-by: Matthew Whitehead <tedheadster@gmail.com>
Signed-off-by: Andy Lutomirski <luto@kernel.org>
Cc: Borislav Petkov <bp@alien8.de>
Cc: Brian Gerst <brgerst@gmail.com>
Cc: Denys Vlasenko <dvlasenk@redhat.com>
Cc: H. Peter Anvin <hpa@zytor.com>
Cc: Josh Poimboeuf <jpoimboe@redhat.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Link: http://lkml.kernel.org/r/70eac6639f23df8be5fe03fa1984aedd5d40077a.1479598603.git.luto@kernel.org
Signed-off-by: Ingo Molnar <mingo@kernel.org>
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On the 80486 DX, it seems that some exceptions may leave garbage in
the high bits of CS. This causes sporadic failures in which
early_fixup_exception() refuses to fix up an exception.
As far as I can tell, this has been buggy for a long time, but the
problem seems to have been exacerbated by commits:
1e02ce4cccdc ("x86: Store a per-cpu shadow copy of CR4")
e1bfc11c5a6f ("x86/init: Fix cr4_init_shadow() on CR4-less machines")
This appears to have broken for as long as we've had early
exception handling.
[ Note to stable maintainers: This patch is needed all the way back to 3.4,
but it will only apply to 4.6 and up, as it depends on commit:
0e861fbb5bda ("x86/head: Move early exception panic code into early_fixup_exception()")
If you want to backport to kernels before 4.6, please don't backport the
prerequisites (there was a big chain of them that rewrote a lot of the
early exception machinery); instead, ask me and I can send you a one-liner
that will apply. ]
Reported-by: Matthew Whitehead <tedheadster@gmail.com>
Signed-off-by: Andy Lutomirski <luto@kernel.org>
Cc: Borislav Petkov <bp@alien8.de>
Cc: Brian Gerst <brgerst@gmail.com>
Cc: Denys Vlasenko <dvlasenk@redhat.com>
Cc: H. Peter Anvin <hpa@zytor.com>
Cc: Josh Poimboeuf <jpoimboe@redhat.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: stable@vger.kernel.org
Fixes: 4c5023a3fa2e ("x86-32: Handle exception table entries during early boot")
Link: http://lkml.kernel.org/r/cb32c69920e58a1a58e7b5cad975038a69c0ce7d.1479609510.git.luto@kernel.org
Signed-off-by: Ingo Molnar <mingo@kernel.org>
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After a policy replacement, the task cred may be out of date and need
to be updated. However change_hat is using the stale profiles from
the out of date cred resulting in either: a stale profile being applied
or, incorrect failure when searching for a hat profile as it has been
migrated to the new parent profile.
Fixes: 01e2b670aa898a39259bc85c78e3d74820f4d3b6 (failure to find hat)
Fixes: 898127c34ec03291c86f4ff3856d79e9e18952bc (stale policy being applied)
Bugzilla: https://bugzilla.suse.com/show_bug.cgi?id=1000287
Cc: stable@vger.kernel.org
Signed-off-by: John Johansen <john.johansen@canonical.com>
Signed-off-by: James Morris <james.l.morris@oracle.com>
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Andrew Lunn says:
====================
Fixes for the MV88e6xxx interrupt code
The interrupt code was never tested with a board who's probing
resulted in an -EPROBE_DEFFERED. So the clean up paths never got
tested. I now do have -EPROBE_DEFFERED, and things break badly during
cleanup. These are the fixes.
This is fixing code in net-next.
v2:
Fix typo pointed out by David Miller
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
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Freeing interrupts requires switch register access to mask the
interrupts. Hence we must hold the register mutex.
Signed-off-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>
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It is not possible to use devm_request_threaded_irq() because we have
two stacked interrupt controllers in one device. The lower interrupt
controller cannot be removed until the upper is fully removed. This
happens too late with the devm API, resulting in error messages about
removing a domain while there is still an active interrupt. Swap to
using request_threaded_irq() and manage the release of the interrupt
manually.
Signed-off-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>
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On error, remask the interrupts, release all maps, and remove the
domain. This cannot be done using the mv88e6xxx_g1_irq_free() because
some of these actions are not idempotent.
Signed-off-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Fix the g1 interrupt free code such that is masks any further
interrupts, and then releases the interrupt.
Signed-off-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Trying to remove an IRQ domain that was not created results in an
Opps. Add the necessary checks that the irqs were created before
freeing them.
Signed-off-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Simple typos, s/g2/g1/
Signed-off-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Pull ARM fixes from Russell King:
"A few more ARM fixes:
- the assembly backtrace code suffers problems with the new printk()
implementation which assumes that kernel messages without KERN_CONT
should have newlines inserted between them. Fix this.
- fix a section naming error - ".init.text" rather than ".text.init"
- preallocate DMA debug memory at core_initcall() time rather than
fs_initcall(), as we have some core drivers that need to use DMA
mapping - and that triggers a kernel warning from the DMA debug
code.
- fix XIP kernels after the ro_after_init changes made this data
permanently read-only"
* 'fixes' of git://git.armlinux.org.uk/~rmk/linux-arm:
ARM: Fix XIP kernels
ARM: 8628/1: dma-mapping: preallocate DMA-debug hash tables in core_initcall
ARM: 8624/1: proc-v7m.S: fix init section name
ARM: fix backtrace
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The comment block in socket.c describing the locking policy is
obsolete, and does not reflect current reality. We remove it in this
commit.
Since the current locking policy is much simpler and follows a
mainstream approach, we see no need to add a new description.
Signed-off-by: Jon Maloy <jon.maloy@ericsson.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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If the link is filtered out, loop index should also be updated. If not,
loop index will not be correct.
Fixes: dc599f76c22b0 ("net: Add support for filtering link dump by master device and kind")
Signed-off-by: Zhang Shengju <zhangshengju@cmss.chinamobile.com>
Acked-by: David Ahern <dsa@cumulusnetworks.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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1) cast to "int" is unnecessary:
u8 will be promoted to int before decrementing,
small positive numbers fit into "int", so their values won't be changed
during promotion.
Once everything is int including loop counters, signedness doesn't
matter: 32-bit operations will stay 32-bit operations.
But! Someone tried to make this loop smart by making everything of
the same type apparently in an attempt to optimise it.
Do the optimization, just differently.
Do the cast where it matters. :^)
2) frag size is unsigned entity and sum of fragments sizes is also
unsigned.
Make everything unsigned, leave no MOVSX instruction behind.
add/remove: 0/0 grow/shrink: 0/3 up/down: 0/-4 (-4)
function old new delta
skb_cow_data 835 834 -1
ip_do_fragment 2549 2548 -1
ip6_fragment 3130 3128 -2
Total: Before=154865032, After=154865028, chg -0.00%
Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Length of a netlink attribute may be u16 but lengths of basic attributes
are much smaller, so small we can save 16 bytes of .rodata and pocket
change inside .text.
16-bit is worse on x86-64 than 8-bit because of operand size override prefix.
add/remove: 0/0 grow/shrink: 0/3 up/down: 0/-19 (-19)
function old new delta
validate_nla 418 417 -1
nla_policy_len 66 64 -2
nla_attr_minlen 32 16 -16
Total: Before=154865051, After=154865032, chg -0.00%
Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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->nla_len is unsigned entity (it's length after all) and u16,
thus it can't overflow when being aligned into int/unsigned int.
(nlmsg_next has the same code, but I didn't yet convince myself
it is correct to do so).
There is pointer arithmetic in this function and offset being
unsigned is better:
add/remove: 0/0 grow/shrink: 1/64 up/down: 5/-309 (-304)
function old new delta
nl80211_set_wiphy 1444 1449 +5
team_nl_cmd_options_set 997 995 -2
tcf_em_tree_validate 872 870 -2
switchdev_port_bridge_setlink 352 350 -2
switchdev_port_br_afspec 312 310 -2
rtm_to_fib_config 428 426 -2
qla4xxx_sysfs_ddb_set_param 2193 2191 -2
qla4xxx_iface_set_param 4470 4468 -2
ovs_nla_free_flow_actions 152 150 -2
output_userspace 518 516 -2
...
nl80211_set_reg 654 649 -5
validate_scan_freqs 148 142 -6
validate_linkmsg 288 282 -6
nl80211_parse_connkeys 489 483 -6
nlattr_set 231 224 -7
nf_tables_delsetelem 267 260 -7
do_setlink 3416 3408 -8
netlbl_cipsov4_add_std 1672 1659 -13
nl80211_parse_sched_scan 2902 2888 -14
nl80211_trigger_scan 1738 1720 -18
do_execute_actions 2821 2738 -83
Total: Before=154865355, After=154865051, chg -0.00%
Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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size_t is way too much for an integer not exceeding 64.
Space savings: 10 bytes!
add/remove: 0/0 grow/shrink: 0/3 up/down: 0/-10 (-10)
function old new delta
napi_consume_skb 165 163 -2
__kfree_skb_flush 56 53 -3
__kfree_skb_defer 97 92 -5
Total: Before=154865639, After=154865629, chg -0.00%
Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Lock socket before checking the SOCK_ZAPPED flag in l2tp_ip6_bind().
Without lock, a concurrent call could modify the socket flags between
the sock_flag(sk, SOCK_ZAPPED) test and the lock_sock() call. This way,
a socket could be inserted twice in l2tp_ip6_bind_table. Releasing it
would then leave a stale pointer there, generating use-after-free
errors when walking through the list or modifying adjacent entries.
BUG: KASAN: use-after-free in l2tp_ip6_close+0x22e/0x290 at addr ffff8800081b0ed8
Write of size 8 by task syz-executor/10987
CPU: 0 PID: 10987 Comm: syz-executor Not tainted 4.8.0+ #39
Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.8.2-0-g33fbe13 by qemu-project.org 04/01/2014
ffff880031d97838 ffffffff829f835b ffff88001b5a1640 ffff8800081b0ec0
ffff8800081b15a0 ffff8800081b6d20 ffff880031d97860 ffffffff8174d3cc
ffff880031d978f0 ffff8800081b0e80 ffff88001b5a1640 ffff880031d978e0
Call Trace:
[<ffffffff829f835b>] dump_stack+0xb3/0x118 lib/dump_stack.c:15
[<ffffffff8174d3cc>] kasan_object_err+0x1c/0x70 mm/kasan/report.c:156
[< inline >] print_address_description mm/kasan/report.c:194
[<ffffffff8174d666>] kasan_report_error+0x1f6/0x4d0 mm/kasan/report.c:283
[< inline >] kasan_report mm/kasan/report.c:303
[<ffffffff8174db7e>] __asan_report_store8_noabort+0x3e/0x40 mm/kasan/report.c:329
[< inline >] __write_once_size ./include/linux/compiler.h:249
[< inline >] __hlist_del ./include/linux/list.h:622
[< inline >] hlist_del_init ./include/linux/list.h:637
[<ffffffff8579047e>] l2tp_ip6_close+0x22e/0x290 net/l2tp/l2tp_ip6.c:239
[<ffffffff850b2dfd>] inet_release+0xed/0x1c0 net/ipv4/af_inet.c:415
[<ffffffff851dc5a0>] inet6_release+0x50/0x70 net/ipv6/af_inet6.c:422
[<ffffffff84c4581d>] sock_release+0x8d/0x1d0 net/socket.c:570
[<ffffffff84c45976>] sock_close+0x16/0x20 net/socket.c:1017
[<ffffffff817a108c>] __fput+0x28c/0x780 fs/file_table.c:208
[<ffffffff817a1605>] ____fput+0x15/0x20 fs/file_table.c:244
[<ffffffff813774f9>] task_work_run+0xf9/0x170
[<ffffffff81324aae>] do_exit+0x85e/0x2a00
[<ffffffff81326dc8>] do_group_exit+0x108/0x330
[<ffffffff81348cf7>] get_signal+0x617/0x17a0 kernel/signal.c:2307
[<ffffffff811b49af>] do_signal+0x7f/0x18f0
[<ffffffff810039bf>] exit_to_usermode_loop+0xbf/0x150 arch/x86/entry/common.c:156
[< inline >] prepare_exit_to_usermode arch/x86/entry/common.c:190
[<ffffffff81006060>] syscall_return_slowpath+0x1a0/0x1e0 arch/x86/entry/common.c:259
[<ffffffff85e4d726>] entry_SYSCALL_64_fastpath+0xc4/0xc6
Object at ffff8800081b0ec0, in cache L2TP/IPv6 size: 1448
Allocated:
PID = 10987
[ 1116.897025] [<ffffffff811ddcb6>] save_stack_trace+0x16/0x20
[ 1116.897025] [<ffffffff8174c736>] save_stack+0x46/0xd0
[ 1116.897025] [<ffffffff8174c9ad>] kasan_kmalloc+0xad/0xe0
[ 1116.897025] [<ffffffff8174cee2>] kasan_slab_alloc+0x12/0x20
[ 1116.897025] [< inline >] slab_post_alloc_hook mm/slab.h:417
[ 1116.897025] [< inline >] slab_alloc_node mm/slub.c:2708
[ 1116.897025] [< inline >] slab_alloc mm/slub.c:2716
[ 1116.897025] [<ffffffff817476a8>] kmem_cache_alloc+0xc8/0x2b0 mm/slub.c:2721
[ 1116.897025] [<ffffffff84c4f6a9>] sk_prot_alloc+0x69/0x2b0 net/core/sock.c:1326
[ 1116.897025] [<ffffffff84c58ac8>] sk_alloc+0x38/0xae0 net/core/sock.c:1388
[ 1116.897025] [<ffffffff851ddf67>] inet6_create+0x2d7/0x1000 net/ipv6/af_inet6.c:182
[ 1116.897025] [<ffffffff84c4af7b>] __sock_create+0x37b/0x640 net/socket.c:1153
[ 1116.897025] [< inline >] sock_create net/socket.c:1193
[ 1116.897025] [< inline >] SYSC_socket net/socket.c:1223
[ 1116.897025] [<ffffffff84c4b46f>] SyS_socket+0xef/0x1b0 net/socket.c:1203
[ 1116.897025] [<ffffffff85e4d685>] entry_SYSCALL_64_fastpath+0x23/0xc6
Freed:
PID = 10987
[ 1116.897025] [<ffffffff811ddcb6>] save_stack_trace+0x16/0x20
[ 1116.897025] [<ffffffff8174c736>] save_stack+0x46/0xd0
[ 1116.897025] [<ffffffff8174cf61>] kasan_slab_free+0x71/0xb0
[ 1116.897025] [< inline >] slab_free_hook mm/slub.c:1352
[ 1116.897025] [< inline >] slab_free_freelist_hook mm/slub.c:1374
[ 1116.897025] [< inline >] slab_free mm/slub.c:2951
[ 1116.897025] [<ffffffff81748b28>] kmem_cache_free+0xc8/0x330 mm/slub.c:2973
[ 1116.897025] [< inline >] sk_prot_free net/core/sock.c:1369
[ 1116.897025] [<ffffffff84c541eb>] __sk_destruct+0x32b/0x4f0 net/core/sock.c:1444
[ 1116.897025] [<ffffffff84c5aca4>] sk_destruct+0x44/0x80 net/core/sock.c:1452
[ 1116.897025] [<ffffffff84c5ad33>] __sk_free+0x53/0x220 net/core/sock.c:1460
[ 1116.897025] [<ffffffff84c5af23>] sk_free+0x23/0x30 net/core/sock.c:1471
[ 1116.897025] [<ffffffff84c5cb6c>] sk_common_release+0x28c/0x3e0 ./include/net/sock.h:1589
[ 1116.897025] [<ffffffff8579044e>] l2tp_ip6_close+0x1fe/0x290 net/l2tp/l2tp_ip6.c:243
[ 1116.897025] [<ffffffff850b2dfd>] inet_release+0xed/0x1c0 net/ipv4/af_inet.c:415
[ 1116.897025] [<ffffffff851dc5a0>] inet6_release+0x50/0x70 net/ipv6/af_inet6.c:422
[ 1116.897025] [<ffffffff84c4581d>] sock_release+0x8d/0x1d0 net/socket.c:570
[ 1116.897025] [<ffffffff84c45976>] sock_close+0x16/0x20 net/socket.c:1017
[ 1116.897025] [<ffffffff817a108c>] __fput+0x28c/0x780 fs/file_table.c:208
[ 1116.897025] [<ffffffff817a1605>] ____fput+0x15/0x20 fs/file_table.c:244
[ 1116.897025] [<ffffffff813774f9>] task_work_run+0xf9/0x170
[ 1116.897025] [<ffffffff81324aae>] do_exit+0x85e/0x2a00
[ 1116.897025] [<ffffffff81326dc8>] do_group_exit+0x108/0x330
[ 1116.897025] [<ffffffff81348cf7>] get_signal+0x617/0x17a0 kernel/signal.c:2307
[ 1116.897025] [<ffffffff811b49af>] do_signal+0x7f/0x18f0
[ 1116.897025] [<ffffffff810039bf>] exit_to_usermode_loop+0xbf/0x150 arch/x86/entry/common.c:156
[ 1116.897025] [< inline >] prepare_exit_to_usermode arch/x86/entry/common.c:190
[ 1116.897025] [<ffffffff81006060>] syscall_return_slowpath+0x1a0/0x1e0 arch/x86/entry/common.c:259
[ 1116.897025] [<ffffffff85e4d726>] entry_SYSCALL_64_fastpath+0xc4/0xc6
Memory state around the buggy address:
ffff8800081b0d80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
ffff8800081b0e00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
>ffff8800081b0e80: fc fc fc fc fc fc fc fc fb fb fb fb fb fb fb fb
^
ffff8800081b0f00: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
ffff8800081b0f80: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
==================================================================
The same issue exists with l2tp_ip_bind() and l2tp_ip_bind_table.
Fixes: c51ce49735c1 ("l2tp: fix oops in L2TP IP sockets for connect() AF_UNSPEC case")
Reported-by: Baozeng Ding <sploving1@gmail.com>
Reported-by: Andrey Konovalov <andreyknvl@google.com>
Tested-by: Baozeng Ding <sploving1@gmail.com>
Signed-off-by: Guillaume Nault <g.nault@alphalink.fr>
Signed-off-by: David S. Miller <davem@davemloft.net>
|
|
git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc
Pull ARM SoC fixes from Olof Johansson:
"Again a set of smaller fixes across several platforms (OMAP, Marvell,
Allwinner, i.MX, etc).
A handful of typo fixes and smaller missing contents from device
trees, with some tweaks to OMAP mach files to deal with CPU feature
print misformatting, potential NULL ptr dereference and one setup
issue with UARTs"
* tag 'armsoc-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc:
ipmi/bt-bmc: change compatible node to 'aspeed, ast2400-ibt-bmc'
ARM: dts: STiH410-b2260: Fix typo in spi0 chipselect definition
ARM: dts: omap5: board-common: fix wrong SMPS6 (VDD-DDR3) voltage
ARM: omap3: Add missing memory node in SOM-LV
arm64: dts: marvell: add unique identifiers for Armada A8k SPI controllers
arm64: dts: marvell: fix clocksource for CP110 slave SPI0
arm64: dts: marvell: Fix typo in label name on Armada 37xx
ASoC: omap-abe-twl6040: fix typo in bindings documentation
dts: omap5: board-common: enable twl6040 headset jack detection
dts: omap5: board-common: add phandle to reference Palmas gpadc
ARM: OMAP2+: avoid NULL pointer dereference
ARM: OMAP2+: PRM: initialize en_uart4_mask and grpsel_uart4_mask
ARM: dts: omap3: Fix memory node in Torpedo board
ARM: AM43XX: Select OMAP_INTERCONNECT in Kconfig
ARM: OMAP3: Fix formatting of features printed
ARM: dts: imx53-qsb: Fix regulator constraints
ARM: dts: sun8i: fix the pinmux for UART1
|
|
git://git.kernel.org/pub/scm/linux/kernel/git/tytso/ext4
Pull ext4 fixes from Ted Ts'o:
"A security fix (so a maliciously corrupted file system image won't
panic the kernel) and some fixes for CONFIG_VMAP_STACK"
* tag 'ext4_for_stable' of git://git.kernel.org/pub/scm/linux/kernel/git/tytso/ext4:
ext4: sanity check the block and cluster size at mount time
fscrypto: don't use on-stack buffer for key derivation
fscrypto: don't use on-stack buffer for filename encryption
|
|
If the block size or cluster size is insane, reject the mount. This
is important for security reasons (although we shouldn't be just
depending on this check).
Ref: http://www.securityfocus.com/archive/1/539661
Ref: https://bugzilla.redhat.com/show_bug.cgi?id=1332506
Reported-by: Borislav Petkov <bp@alien8.de>
Reported-by: Nikolay Borisov <kernel@kyup.com>
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
Cc: stable@vger.kernel.org
|
|
With the new (in 4.9) option to use a virtually-mapped stack
(CONFIG_VMAP_STACK), stack buffers cannot be used as input/output for
the scatterlist crypto API because they may not be directly mappable to
struct page. get_crypt_info() was using a stack buffer to hold the
output from the encryption operation used to derive the per-file key.
Fix it by using a heap buffer.
This bug could most easily be observed in a CONFIG_DEBUG_SG kernel
because this allowed the BUG in sg_set_buf() to be triggered.
Cc: stable@vger.kernel.org
Signed-off-by: Eric Biggers <ebiggers@google.com>
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
|
|
With the new (in 4.9) option to use a virtually-mapped stack
(CONFIG_VMAP_STACK), stack buffers cannot be used as input/output for
the scatterlist crypto API because they may not be directly mappable to
struct page. For short filenames, fname_encrypt() was encrypting a
stack buffer holding the padded filename. Fix it by encrypting the
filename in-place in the output buffer, thereby making the temporary
buffer unnecessary.
This bug could most easily be observed in a CONFIG_DEBUG_SG kernel
because this allowed the BUG in sg_set_buf() to be triggered.
Cc: stable@vger.kernel.org
Signed-off-by: Eric Biggers <ebiggers@google.com>
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
|
|
git://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux
Pull i2c fixes from Wolfram Sang:
"Some I2C driver bugfixes (and one documentation fix)"
* 'i2c/for-current' of git://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux:
i2c: i2c-mux-pca954x: fix deselect enabling for device-tree
i2c: digicolor: use clk_disable_unprepare instead of clk_unprepare
i2c: mux: fix up dependencies
i2c: Documentation: i2c-topology: fix minor whitespace nit
i2c: mux: demux-pinctrl: make drivers with no pinctrl work again
|
|
Pull KVM fixes from Radim Krčmář:
"ARM:
- Fix handling of the 32bit cycle counter
- Fix cycle counter filtering
x86:
- Fix a race leading to double unregistering of user notifiers
- Amend oversight in kvm_arch_set_irq that turned Hyper-V code dead
- Use SRCU around kvm_lapic_set_vapic_addr
- Avoid recursive flushing of asynchronous page faults
- Do not rely on deferred update in KVM_GET_CLOCK, which fixes #GP
- Let userspace know that KVM_GET_CLOCK is useful with master clock;
4.9 changed the return value to better match the guest clock, but
didn't provide means to let guests take advantage of it"
* tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm:
kvm: x86: merge kvm_arch_set_irq and kvm_arch_set_irq_inatomic
KVM: x86: fix missed SRCU usage in kvm_lapic_set_vapic_addr
KVM: async_pf: avoid recursive flushing of work items
kvm: kvmclock: let KVM_GET_CLOCK return whether the master clock is in use
KVM: Disable irq while unregistering user notifier
KVM: x86: do not go through vcpu in __get_kvmclock_ns
KVM: arm64: Fix the issues when guest PMCCFILTR is configured
arm64: KVM: pmu: Fix AArch32 cycle counter access
|
|
Deselect functionality can be ignored for device-trees with
"i2c-mux-idle-disconnect" entries if no platform_data is available.
By enabling the deselect functionality outside the platform_data
block the logic works as it did in previous kernels.
Fixes: 7fcac9807175 ("i2c: i2c-mux-pca954x: convert to use an explicit i2c mux core")
Cc: <stable@vger.kernel.org> # v4.7+
Signed-off-by: Alex Hemme <ahemme@cisco.com>
Signed-off-by: Ziyang Wu <ziywu@cisco.com>
[touched up a few minor issues /peda]
Signed-off-by: Peter Rosin <peda@axentia.se>
Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
|
|
git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux
Pull powerpc fixes from Michael Ellerman:
"Fixes marked for stable:
- fix system reset interrupt winkle wakeups
- fix setting of AIL in hypervisor mode
Fixes for code merged this cycle:
- fix exception vector build with 2.23 era binutils
- fix missing update of HID register on secondary CPUs
Other:
- fix missing pr_cont()s
- invalidate ERAT on tlbiel for POWER9 DD1"
* tag 'powerpc-4.9-5' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux:
powerpc/mm: Fix missing update of HID register on secondary CPUs
powerpc/mm/radix: Invalidate ERAT on tlbiel for POWER9 DD1
powerpc/64: Fix setting of AIL in hypervisor mode
powerpc/oops: Fix missing pr_cont()s in instruction dump
powerpc/oops: Fix missing pr_cont()s in show_regs()
powerpc/oops: Fix missing pr_cont()s in print_msr_bits() et. al.
powerpc/oops: Fix missing pr_cont()s in show_stack()
powerpc: Fix exception vector build with 2.23 era binutils
powerpc/64s: Fix system reset interrupt winkle wakeups
|
|
git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6
Pull crypto fixes from Herbert Xu:
"This fixes the following issues:
- Compiler warning in caam driver that was the last one remaining
- Do not register aes-xts in caam drivers on unsupported platforms
- Regression in algif_hash interface that may lead to an oops"
* 'linus' of git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6:
crypto: algif_hash - Fix NULL hash crash with shash
crypto: caam - fix type mismatch warning
crypto: caam - do not register AES-XTS mode on LP units
|
|
git://git.kernel.org/pub/scm/linux/kernel/git/j.anaszewski/linux-leds
Pull LED subsystem update from Jacek Anaszewski:
"I'd like to announce a new co-maintainer - Pavel Machek"
* tag 'leds_4.9-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/j.anaszewski/linux-leds:
MAINTAINERS: Add LED subsystem co-maintainer
|
|
git://git.infradead.org/users/vkoul/slave-dma
Pull dmaengine fixes from Vinod Koul:
"Some driver fixes which we pending in my tree:
- return error code fix in edma driver
- Kconfig fix for genric allocator in mmp_tdma
- fix uninitialized value in sun6i
- Runtime pm fixes for cppi"
* tag 'dmaengine-fix-4.9-rc6' of git://git.infradead.org/users/vkoul/slave-dma:
dmaengine: cppi41: More PM runtime fixes
dmaengine: cpp41: Fix handling of error path
dmaengine: cppi41: Fix unpaired pm runtime when only a USB hub is connected
dmaengine: cppi41: Fix list not empty warning on module removal
dmaengine: sun6i: fix the uninitialized value for v_lli
dmaengine: mmp_tdma: add missing select GENERIC_ALLOCATOR in Kconfig
dmaengine: edma: Fix error return code in edma_alloc_chan_resources()
|
|
kvm_arch_set_irq is unused since commit b97e6de9c96. Merge
its functionality with kvm_arch_set_irq_inatomic.
Reported-by: Jiang Biao <jiang.biao2@zte.com.cn>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Reviewed-by: David Hildenbrand <david@redhat.com>
Signed-off-by: Radim Krčmář <rkrcmar@redhat.com>
|
|
Reported by syzkaller:
[ INFO: suspicious RCU usage. ]
4.9.0-rc4+ #47 Not tainted
-------------------------------
./include/linux/kvm_host.h:536 suspicious rcu_dereference_check() usage!
stack backtrace:
CPU: 1 PID: 6679 Comm: syz-executor Not tainted 4.9.0-rc4+ #47
Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS Bochs 01/01/2011
ffff880039e2f6d0 ffffffff81c2e46b ffff88003e3a5b40 0000000000000000
0000000000000001 ffffffff83215600 ffff880039e2f700 ffffffff81334ea9
ffffc9000730b000 0000000000000004 ffff88003c4f8420 ffff88003d3f8000
Call Trace:
[< inline >] __dump_stack lib/dump_stack.c:15
[<ffffffff81c2e46b>] dump_stack+0xb3/0x118 lib/dump_stack.c:51
[<ffffffff81334ea9>] lockdep_rcu_suspicious+0x139/0x180 kernel/locking/lockdep.c:4445
[< inline >] __kvm_memslots include/linux/kvm_host.h:534
[< inline >] kvm_memslots include/linux/kvm_host.h:541
[<ffffffff8105d6ae>] kvm_gfn_to_hva_cache_init+0xa1e/0xce0 virt/kvm/kvm_main.c:1941
[<ffffffff8112685d>] kvm_lapic_set_vapic_addr+0xed/0x140 arch/x86/kvm/lapic.c:2217
Reported-by: Dmitry Vyukov <dvyukov@google.com>
Fixes: fda4e2e85589191b123d31cdc21fd33ee70f50fd
Cc: Andrew Honig <ahonig@google.com>
Cc: stable@vger.kernel.org
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Reviewed-by: David Hildenbrand <david@redhat.com>
Signed-off-by: Radim Krčmář <rkrcmar@redhat.com>
|
|
This was reported by syzkaller:
[ INFO: possible recursive locking detected ]
4.9.0-rc4+ #49 Not tainted
---------------------------------------------
kworker/2:1/5658 is trying to acquire lock:
([ 1644.769018] (&work->work)
[< inline >] list_empty include/linux/compiler.h:243
[<ffffffff8128dd60>] flush_work+0x0/0x660 kernel/workqueue.c:1511
but task is already holding lock:
([ 1644.769018] (&work->work)
[<ffffffff812916ab>] process_one_work+0x94b/0x1900 kernel/workqueue.c:2093
stack backtrace:
CPU: 2 PID: 5658 Comm: kworker/2:1 Not tainted 4.9.0-rc4+ #49
Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS Bochs 01/01/2011
Workqueue: events async_pf_execute
ffff8800676ff630 ffffffff81c2e46b ffffffff8485b930 ffff88006b1fc480
0000000000000000 ffffffff8485b930 ffff8800676ff7e0 ffffffff81339b27
ffff8800676ff7e8 0000000000000046 ffff88006b1fcce8 ffff88006b1fccf0
Call Trace:
...
[<ffffffff8128ddf3>] flush_work+0x93/0x660 kernel/workqueue.c:2846
[<ffffffff812954ea>] __cancel_work_timer+0x17a/0x410 kernel/workqueue.c:2916
[<ffffffff81295797>] cancel_work_sync+0x17/0x20 kernel/workqueue.c:2951
[<ffffffff81073037>] kvm_clear_async_pf_completion_queue+0xd7/0x400 virt/kvm/async_pf.c:126
[< inline >] kvm_free_vcpus arch/x86/kvm/x86.c:7841
[<ffffffff810b728d>] kvm_arch_destroy_vm+0x23d/0x620 arch/x86/kvm/x86.c:7946
[< inline >] kvm_destroy_vm virt/kvm/kvm_main.c:731
[<ffffffff8105914e>] kvm_put_kvm+0x40e/0x790 virt/kvm/kvm_main.c:752
[<ffffffff81072b3d>] async_pf_execute+0x23d/0x4f0 virt/kvm/async_pf.c:111
[<ffffffff8129175c>] process_one_work+0x9fc/0x1900 kernel/workqueue.c:2096
[<ffffffff8129274f>] worker_thread+0xef/0x1480 kernel/workqueue.c:2230
[<ffffffff812a5a94>] kthread+0x244/0x2d0 kernel/kthread.c:209
[<ffffffff831f102a>] ret_from_fork+0x2a/0x40 arch/x86/entry/entry_64.S:433
The reason is that kvm_put_kvm is causing the destruction of the VM, but
the page fault is still on the ->queue list. The ->queue list is owned
by the VCPU, not by the work items, so we cannot just add list_del to
the work item.
Instead, use work->vcpu to note async page faults that have been resolved
and will be processed through the done list. There is no need to flush
those.
Cc: Dmitry Vyukov <dvyukov@google.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Radim Krčmář <rkrcmar@redhat.com>
|
|
Userspace can read the exact value of kvmclock by reading the TSC
and fetching the timekeeping parameters out of guest memory. This
however is brittle and not necessary anymore with KVM 4.11. Provide
a mechanism that lets userspace know if the new KVM_GET_CLOCK
semantics are in effect, and---since we are at it---if the clock
is stable across all VCPUs.
Cc: Radim Krčmář <rkrcmar@redhat.com>
Cc: Marcelo Tosatti <mtosatti@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Radim Krčmář <rkrcmar@redhat.com>
|
