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Groups > linux.kernel > #1332945
| From | Peter Zijlstra <peterz@infradead.org> |
|---|---|
| Newsgroups | linux.kernel |
| Subject | Re: [PATCH 00/33] Compile-time stack metadata validation |
| Date | 2016-02-12 18:20 +0100 |
| Message-ID | <r1pxW-1vA-49@gated-at.bofh.it> (permalink) |
| References | <qTwmS-3nT-7@gated-at.bofh.it> <r1jiO-5IA-19@gated-at.bofh.it> <r1ncL-8iz-17@gated-at.bofh.it> |
| Organization | linux.* mail to news gateway |
On Fri, Feb 12, 2016 at 08:45:43AM -0600, Josh Poimboeuf wrote:
> On Fri, Feb 12, 2016 at 11:36:24AM +0100, Jiri Slaby wrote:
>
> This seems like a real frame pointer bug caused by the following line in
> arch/x86/include/asm/preempt.h:
>
> # define __preempt_schedule() asm ("call ___preempt_schedule")
The purpose there is that:
preempt_enable();
turns into:
decl __percpu_prefix:__preempt_count
jnz 1f:
call ___preempt_schedule
1:
See arch/x86/include/asm/preempt.h:__preempt_count_dec_and_test()
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Re: [PATCH 00/33] Compile-time stack metadata validation Jiri Slaby <jslaby@suse.cz> - 2016-02-12 11:40 +0100
Re: [PATCH 00/33] Compile-time stack metadata validation Jiri Slaby <jslaby@suse.cz> - 2016-02-12 11:50 +0100
Re: [PATCH 00/33] Compile-time stack metadata validation Josh Poimboeuf <jpoimboe@redhat.com> - 2016-02-12 15:50 +0100
Re: [PATCH 00/33] Compile-time stack metadata validation Peter Zijlstra <peterz@infradead.org> - 2016-02-12 18:20 +0100
Re: [PATCH 00/33] Compile-time stack metadata validation Josh Poimboeuf <jpoimboe@redhat.com> - 2016-02-12 19:40 +0100
Re: [PATCH 00/33] Compile-time stack metadata validation Josh Poimboeuf <jpoimboe@redhat.com> - 2016-02-12 19:40 +0100
Re: [PATCH 00/33] Compile-time stack metadata validation Peter Zijlstra <peterz@infradead.org> - 2016-02-12 21:20 +0100
Re: [PATCH 00/33] Compile-time stack metadata validation Josh Poimboeuf <jpoimboe@redhat.com> - 2016-02-15 17:40 +0100
Re: [PATCH 00/33] Compile-time stack metadata validation Peter Zijlstra <peterz@infradead.org> - 2016-02-15 18:00 +0100
Re: [PATCH 00/33] Compile-time stack metadata validation Andi Kleen <andi@firstfloor.org> - 2016-02-15 21:10 +0100
Re: [PATCH 00/33] Compile-time stack metadata validation Josh Poimboeuf <jpoimboe@redhat.com> - 2016-02-15 21:10 +0100
[PATCH] sched/x86: Add stack frame dependency to __preempt_schedule[_notrace] Josh Poimboeuf <jpoimboe@redhat.com> - 2016-02-18 18:50 +0100
Re: [PATCH] sched/x86: Add stack frame dependency to __preempt_schedule[_notrace] Jiri Slaby <jslaby@suse.cz> - 2016-02-19 13:10 +0100
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