>>> Andi Kleen <[email protected]> 08.08.06 08:49 >>>
>
>> >include/asm-i386/unwind.h::arch_unw_user_mode():
>> > return info->regs.eip < PAGE_OFFSET
>> > || (info->regs.eip >= __fix_to_virt(FIX_VDSO)
>> > && info->regs.eip < __fix_to_virt(FIX_VDSO) + PAGE_SIZE)
>> > || info->regs.esp < PAGE_OFFSET;
>>
>> Hmm, indeed. Then I'm unclear what the problem might be here.
>
>That code will check for the vsyscall page, but sysenter_entry isn't
>in the vsyscall page, but in the kernel proper.
>
>So it means the EIP never actually reached the vsyscall page. It should
>have gone up another level, but didn't.
I think we had seen sysenter_past_esp in the stack trace, so it did reach
that function. The next outer level should be the VDSO page, shouldn't it?
Jan
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