Re: inux-2.6.9-rc4-mm1 -> apache2[9125] exited with preempt_count2

[Frank Phillips]

Alessandro Vincelli wrote:

> With the kernel linux-2.6.9-rc4-mm1 after start apache2 the stack 
> repeat the error before.
> with the kernel < 2.6.9 no problem.
> I use gentoo,
> and this modules
>
> bash-2.05b$ cat /proc/mo
> modules  mounts
> bash-2.05b$ cat /proc/modules
> uhci_hcd 25624 - - Live 0xcee5e000
> snd_atiixp 14216 - - Live 0xcee3a000
> snd_ac97_codec 58732 - - Live 0xcee4e000
> ehci_hcd 22188 - - Live 0xcee33000
> ati_agp 5844 - - Live 0xced95000
> usbcore 88832 - - Live 0xcee14000
> ntfs 86676 - - Live 0xcedc1000
> 3c59x 32464 - - Live 0xced9d000
>
>
> why?
>
>
>
> Unable to handle kernel paging request at virtual address 000153bc
> printing eip:
> c011537f
> *pde = 00000000
> Oops: 0002 [#182]
> PREEMPT
> Modules linked in:
> CPU:    0
> EIP:    0060:[<c011537f>]    Not tainted VLI
> EFLAGS: 00210082   (2.6.9-rc4-mm1)
> EIP is at profile_hit+0x23/0x26
> eax: 00000000   ebx: c1ec2a00   ecx: 00000000   edx: 000153bc
> esi: ffffffea   edi: 00000000   ebp: c18f1fbc   esp: c18f1f98
> ds: 007b   es: 007b   ss: 0068
> Process apache2 (pid: 9124, threadinfo=c18f0000 task=c1ec2a00)
> Stack: c0111c2c c041f5a0 b7c60b84 c18f0000 00200086 00000000 000023a4 
> 00000000
>      00000000 c18f0000 c0105717 000023a4 00000000 b6599cf8 00000000 
> 00000000
>      b6599bcc 0000009c 0000007b 0000007b 0000009c b7be3144 00000073 
> 00200246
> Call Trace:
> [<c0111c2c>] setscheduler+0xa4/0x1f0
> [<c0105717>] syscall_call+0x7/0xb
> Code: 8b 74 24 04 83 c4 10 c3 81 ea 28 02 10 c0 8b 0d 2c 48 42 c0 a1 
> 28 48 42 c0 d3 ea 83 e8 01 39 d0 0f 46 d0 a1 24 48 42 c0 8d 14 90 <ff> 
> 02 c3 b8 da ff ff ff c3 b8 da ff ff ff c3 90 90 53 31 d2 83
> <6>note: apache2[9124] exited with preempt_count 2
> Unable to handle kernel paging request at virtual address 000153bc
> printing eip:
> c011537f
> *pde = 00000000
> Oops: 0002 [#183]
> PREEMPT
> Modules linked in:
> CPU:    0
> EIP:    0060:[<c011537f>]    Not tainted VLI
> EFLAGS: 00210082   (2.6.9-rc4-mm1)
> EIP is at profile_hit+0x23/0x26
> eax: 00000000   ebx: c1ec2510   ecx: 00000000   edx: 000153bc
> esi: ffffffea   edi: 00000000   ebp: c18c3fbc   esp: c18c3f98
> ds: 007b   es: 007b   ss: 0068
> Process apache2 (pid: 9125, threadinfo=c18c2000 task=c1ec2510)
> Stack: c0111c2c c041f5a0 b7c60b84 c18c2000 00200082 00000000 000023a5 
> 00000000
>      00000000 c18c2000 c0105717 000023a5 00000000 b6599cf8 00000000 
> 00000000
>      b6599bcc 0000009c 0000007b 0000007b 0000009c b7be3144 00000073 
> 00200246
> Call Trace:
> [<c0111c2c>] setscheduler+0xa4/0x1f0
> [<c0105717>] syscall_call+0x7/0xb
> Code: 8b 74 24 04 83 c4 10 c3 81 ea 28 02 10 c0 8b 0d 2c 48 42 c0 a1 
> 28 48 42 c0 d3 ea 83 e8 01 39 d0 0f 46 d0 a1 24 48 42 c0 8d 14 90 <ff> 
> 02 c3 b8 da ff ff ff c3 b8 da ff ff ff c3 90 90 53 31 d2 83
> <6>note: apache2[9125] exited with preempt_count 2
Revert this patch:
ftp://ftp.kernel.org/pub/linux/kernel/people/akpm/patches/2.6/2.6.9-rc4/2.6.9-rc4-mm1/broken-out/optimize-profile-path-slightly.patch 


Frank
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