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SubjectRe: 2.6.1 Unable to handle kernel paging request
David Pospí__il <foton2@post.cz> wrote:
>
> I was only listening the radio via internet, when computer totaly crashed. I
> had to restart (my uptime was 9 days :-( )

This is ugly.

> Xfree, KDE, KMail, Mozilla, mplayer (radio),XMMS,mc and karamba were running.
> This is my syslog :
> Jan 25 03:51:02 foton2 kernel: Unable to handle kernel paging request at
> virtual address 00200204
> Jan 25 03:51:02 foton2 kernel: printing eip:
> Jan 25 03:51:02 foton2 kernel: c013bb35
> Jan 25 03:51:02 foton2 kernel: *pde = 00000000
> Jan 25 03:51:02 foton2 kernel: Oops: 0000 [#1]
> Jan 25 03:51:02 foton2 kernel: CPU: 0
> Jan 25 03:51:02 foton2 kernel: EIP: 0060:[<c013bb35>] Tainted: P
> Jan 25 03:51:02 foton2 kernel: EFLAGS: 00010006
> Jan 25 03:51:02 foton2 kernel: EIP is at free_block+0x43/0xcb
> Jan 25 03:51:02 foton2 kernel: eax: 00672c30 ebx: 00200200 ecx: e944e20c
> edx: c1000000
> Jan 25 03:51:02 foton2 kernel: esi: eff3f840 edi: 00000002 ebp: eff3f84c
> esp: e21e5e98
> Jan 25 03:51:02 foton2 kernel: ds: 007b es: 007b ss: 0068
> Jan 25 03:51:02 foton2 kernel: Process karamba (pid: 844, threadinfo=e21e4000
> task=e29d2cc0)
> Jan 25 03:51:02 foton2 kernel: Stack: 00000200 e21e5fc4 eff3f85c eff3d350
> d6128000 00000286 eff3e3e0 c013bcb2
> Jan 25 03:51:02 foton2 kernel: eff3f840 eff3d350 00000004 00000001
> 00000001 e21e5ee0 00000004 eff3d340
> Jan 25 03:51:02 foton2 kernel: d6128000 00000286 00000000 c013be10
> eff3f840 eff3d340 c7362080 c7362080
> Jan 25 03:51:02 foton2 kernel: Call Trace:
> Jan 25 03:51:02 foton2 kernel: [<c013bcb2>] cache_flusharray+0xf5/0xfa
> Jan 25 03:51:02 foton2 kernel: [<c013be10>] kfree+0x5e/0x62
> Jan 25 03:51:02 foton2 kernel: [<c011a6c4>] free_task+0x16/0x2f
> Jan 25 03:51:02 foton2 kernel: [<c011d8a9>] release_task+0x18c/0x1f3
> Jan 25 03:51:02 foton2 kernel: [<c011f161>] wait_task_zombie+0x151/0x1e4
> Jan 25 03:51:02 foton2 kernel: [<c011f5ca>] sys_wait4+0x237/0x27e
> Jan 25 03:51:02 foton2 kernel: [<c0119411>] default_wake_function+0x0/0x12
> Jan 25 03:51:02 foton2 kernel: [<c0119411>] default_wake_function+0x0/0x12
> Jan 25 03:51:02 foton2 kernel: [<c0108fef>] syscall_call+0x7/0xb

Looks like a double-free of a kernel stack. Do you have slab debugging
enabled? Preempt? SMP?
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