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SubjectRe: Oprofile related oops? 2.6.9-rc1-mm4
On Tue, 7 Sep 2004, Zwane Mwaikambo wrote:

> I got this with a high process count load (I'll try and get a hold of the
> app).

Forgot these bits;

Unable to handle kernel paging request at virtual address 083ffff4
printing eip:
c0155153
*pde = 0fae9067
> Sep 7 19:11:57 morocco kernel: Oops: 0000 [#1]
> Sep 7 19:11:57 morocco kernel: PREEMPT SMP DEBUG_PAGEALLOC
> Sep 7 19:11:57 morocco kernel: Modules linked in:
> Sep 7 19:11:57 morocco kernel: CPU: 1
> Sep 7 19:11:57 morocco kernel: EIP: 0060:[<c0155153>] Not tainted VLI
> Sep 7 19:11:57 morocco kernel: EFLAGS: 00010202 (2.6.9-rc1-mm4)
> Sep 7 19:11:57 morocco kernel: EIP is at find_vma+0x43/0x70
> Sep 7 19:11:57 morocco kernel: eax: 083fffec ebx: 080634a0 ecx: c0120ebe edx: 08400004
> Sep 7 19:11:57 morocco kernel: esi: cd141d9c edi: 00000000 ebp: c1f5beac esp: c1f5bea4
> Sep 7 19:11:58 morocco kernel: ds: 007b es: 007b ss: 0068
> Sep 7 19:11:58 morocco kernel: Process events/1 (pid: 7, threadinfo=c1f5a000 task=c1eeca90)
> Sep 7 19:11:58 morocco kernel: Stack: 00000000 080634a0 c1f5bed0 c057c20d cd141d9c 080634a0 00000000 0000007b
> Sep 7 19:11:58 morocco kernel: 00000000 f8985c98 c0795080 c1f5bef0 c057c417 cd141d9c 080634a0 c1f5bee4
> Sep 7 19:11:58 morocco kernel: 00000000 00000000 00000000 c1f5bf24 c057c886 cd141d9c f8985c98 00000000
> Sep 7 19:11:58 morocco kernel: Call Trace:
> Sep 7 19:11:58 morocco kernel: [<c010806f>] show_stack+0x7f/0xa0
> Sep 7 19:11:58 morocco kernel: [<c010821f>] show_registers+0x15f/0x1d0
> Sep 7 19:11:58 morocco kernel: [<c010845c>] die+0x10c/0x1a0
> Sep 7 19:11:58 morocco kernel: [<c011c185>] do_page_fault+0x255/0x5f2
> Sep 7 19:11:58 morocco kernel: [<c0107c59>] error_code+0x2d/0x38
> Sep 7 19:11:58 morocco kernel: [<c057c20d>] lookup_dcookie+0x1d/0xa0
> Sep 7 19:11:58 morocco kernel: [<c057c417>] add_us_sample+0x27/0x70
> Sep 7 19:11:58 morocco kernel: [<c057c886>] sync_buffer+0x136/0x13b
> Sep 7 19:11:58 morocco kernel: [<c057bead>] wq_sync_buffer+0x3d/0x70
> Sep 7 19:11:58 morocco kernel: [<c013395c>] worker_thread+0x19c/0x240
> Sep 7 19:11:58 morocco kernel: [<c0137f8a>] kthread+0xba/0xc0
> Sep 7 19:11:58 morocco kernel: [<c01052e5>] kernel_thread_helper+0x5/0x10
> Sep 7 19:11:58 morocco kernel: Code: 39 59 08 76 13 39 59 04 76 3b 8d b4 26 00 00 00 00 8d bc 27 00 00 00 00 8b 56 04 31 c9 85 d2 74 24 8d b4 26 00 00 00 00 8d 42 e8 <39> 58 08 76 1b 39 58 04 89 c1 76 07 8b 52 0c 85 d2 75 ea 85 c9
>
> (gdb) list *find_vma+0x43
> 0xc0155153 is in find_vma (mm/mmap.c:1265).
> 1260 struct vm_area_struct * vma_tmp;
> 1261
> 1262 vma_tmp = rb_entry(rb_node,
> 1263 struct vm_area_struct, vm_rb);
> 1264
> 1265 if (vma_tmp->vm_end > addr) {
> 1266 vma = vma_tmp;
> 1267 if (vma_tmp->vm_start <= addr)
> 1268 break;
> -
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