Messages in this thread Patch in this message | | | Date | Tue, 5 Apr 2005 00:03:19 -0700 | From | Andrew Morton <> | Subject | Re: crash in entry.S restore_all, 2.6.12-rc2, x86, PAGEALLOC |
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Ingo Molnar <mingo@elte.hu> wrote: > > the crashes below happen when PAGEALLOC is enabled. It's this > instruction: > > movb OLDSS(%esp), %ah > > OLDSS is 0x38, esp is f4f83fc8, OLDSS(%esp) is thus f4f84000, which > correctly creates the PAGEALLOC pagefault. esp is off by 4 bytes? > > it could be the ESP-16-bit-corruption patch causing this,
Do you have nmis enabled?
From: Akinobu Mita <amgta@yacht.ocn.ne.jp>
With nmi_watchdog=1, I got random Oopses (Unable to handle kernel paging request, not by the NMI oopser) from many processes. It is not happend with -rc1.
The following change fixes this problem.
Signed-off-by: Andrew Morton <akpm@osdl.org> ---
25-akpm/arch/i386/kernel/entry.S | 2 +- 1 files changed, 1 insertion(+), 1 deletion(-)
diff -puN arch/i386/kernel/entry.S~nmi_stack_correct-fix arch/i386/kernel/entry.S --- 25/arch/i386/kernel/entry.S~nmi_stack_correct-fix 2005-04-05 00:02:48.000000000 -0700 +++ 25-akpm/arch/i386/kernel/entry.S 2005-04-05 00:02:48.000000000 -0700 @@ -550,7 +550,7 @@ nmi_stack_correct: xorl %edx,%edx # zero error code movl %esp,%eax # pt_regs pointer call do_nmi - jmp restore_all + jmp restore_nocheck nmi_stack_fixup: FIX_STACK(12,nmi_stack_correct, 1) _ - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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