In-Reply-To: <[email protected]>
On Wed, 10 May 2006 07:54:26 -0700, Matthew L Foster wrote:
> Found this in the log this morning. Dunno if it's relevant but I don't have swap enabled in my
> config.
>
> BUG: unable to handle kernel paging request at virtual address 04000004
> printing eip:
> c015568b
> *pde = 00000000
> Oops: 0002 [#1]
> PREEMPT
> Modules linked in:
> CPU: 0
> EIP: 0060:[<c015568b>] Not tainted VLI
> EFLAGS: 00010206 (2.6.17-rc3-git8 #10)
> EIP is at prune_dcache+0xbf/0x138
> eax: 04000000 ebx: d895122c ecx: d8951250 edx: c14553cc
> esi: d8951238 edi: 00000050 ebp: dff3aed8 esp: dff3aecc
> ds: 007b es: 007b ss: 0068
> Process kswapd0 (pid: 127, threadinfo=dff3a000 task=dff360d0)
> Stack: <0>00006720 dffeeb00 00000081 dff3aee0 c015571e dff3af18 c0132e82 00000080
> 000000d0 00000000 000000d0 0019c800 00000000 0019c800 00000080 00000000
> 00000000 c02f9720 c02f9720 dff3af98 c0133cd7 00000000 000000d0 0001d60d
> Call Trace:
> <c01032f8> show_stack_log_lvl+0x8c/0x96 <c0103457> show_registers+0x120/0x18c
> <c0103620> die+0x15d/0x229 <c010f571> do_page_fault+0x444/0x527
> <c0102dab> error_code+0x4f/0x54 <c015571e> shrink_dcache_memory+0x1a/0x32
> <c0132e82> shrink_slab+0xd8/0x13f <c0133cd7> balance_pgdat+0x1f9/0x2fc
> <c0133f10> kswapd+0xdd/0xdf <c0101005> kernel_thread_helper+0x5/0xb
> Code: c0 ff 4a 14 8b 42 08 a8 08 74 72 e8 82 10 15 00 eb 6b a8 10 75 1f 83 c8 10 8d 71 e8 89 43 04 8b 41 e8 8b 56 04 85 c0 89 02 74 03 <89> 50 04 c7 46 04 00 02 20 00 8d 4b 2c 8b 53 2c 8b 41 04 89 42
> EIP: [<c015568b>] prune_dcache+0xbf/0x138 SS:ESP 0068:dff3aecc
Code; c0155676 No symbols available
16: 83 c8 10 or $0x10,%eax
Code; c0155679 No symbols available
19: 8d 71 e8 lea 0xffffffe8(%ecx),%esi
Code; c015567c No symbols available
1c: 89 43 04 mov %eax,0x4(%ebx)
Code; c015567f No symbols available
1f: 8b 41 e8 mov 0xffffffe8(%ecx),%eax
Code; c0155682 No symbols available
22: 8b 56 04 mov 0x4(%esi),%edx
Code; c0155685 No symbols available
25: 85 c0 test %eax,%eax
Code; c0155687 No symbols available
27: 89 02 mov %eax,(%edx)
Code; c0155689 No symbols available
29: 74 03 je 2e <_EIP+0x2e>
Code; c015568b No symbols available <=====
0: 89 50 04 mov %edx,0x4(%eax) <=====
Code; c015568e No symbols available
3: c7 46 04 00 02 20 00 movl $0x200200,0x4(%esi)
Code; c0155695 No symbols available
a: 8d 4b 2c lea 0x2c(%ebx),%ecx
Code; c0155698 No symbols available
d: 8b 53 2c mov 0x2c(%ebx),%edx
Code; c015569b No symbols available
10: 8b 41 04 mov 0x4(%ecx),%eax
Tracing through the nested inline functions:
prune_dcache
prune_one_dentry
__d_drop
hlist_del_rcu
__hlist_del
static inline void __hlist_del(struct hlist_node *n)
{
struct hlist_node *next = n->next;
struct hlist_node **pprev = n->pprev;
*pprev = next;
if (next)
next->pprev = pprev; <========== OOPS
}
next (in register eax) was not zero, but has only one bit set.
Looks like a bit flipped in memory. Please run memtest86
overnight on the machine.
--
Chuck
"Penguins don't come from next door, they come from the Antarctic!"
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