Messages in this thread |  | | | Date | Fri, 25 Jun 2004 03:18:00 -0700 (PDT) | | Subject | Re: inode_unused list corruption in 2.4.26 - spin_lock problem? | | From | Chris Caputo <> |
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On Fri, 25 Jun 2004, Chris Caputo wrote: > On Wed, 23 Jun 2004, Chris Caputo wrote: > > __refile_inode() was introduced in 2.4.25. I'll try 2.4.24 to see if I > > can reproduce there. > > No word yet on my 2.4.24 testing. (test still running without failure)
I have now reproduced (below) with 2.4.24 (with tux patches + my driver). In the code I believe the line doing the null deref is:
entry = entry->prev; [771 or 2.4.24 fs/inode.c]
Next I'll try to repro with simply a stock 2.4.26.
Chris
--- Unable to handle kernel NULL pointer dereference at virtual address 00000004 c01665f5 *pde = 00000000 Oops: 0000 CPU: 0 EIP: 0010:[<c01665f5>] Not tainted Using defaults from ksymoops -t elf32-i386 -a i386 EFLAGS: 00010217 eax: 00000020 ebx: 00000000 ecx: 00000006 edx: 00000001 esi: 00000000 edi: fffffff8 ebp: c7f95f58 esp: c7f95f30 ds: 0018 es: 0018 ss: 0018 Process kswapd (pid: 5, stackpage=c7f95000) Stack: c7f95f58 c0163794 00000000 c7f95f3c c7f95f3c c7f95f64 c013d152 000001d0 0000003a 0000000a c7f95f64 c01666f7 00018057 c7f95f8c c013fdcf 00000006 000001d0 00000000 c0329a60 00000001 c0329a60 00000001 c7f94000 c7f95fa8 Call Trace: [<c0163794>] [<c013d152>] [<c01666f7>] [<c013fdcf>] [<c013ff78>] [<c013ffe8>] [<c014013a>] [<c01400a0>] [<c01059ce>] [<c01400a0>] Code: 8b 76 04 8b 87 30 01 00 00 a8 38 74 6e 81 fe 28 a9 32 c0 75
>>EIP; c01665f5 <prune_icache+65/140> <=====
>>ebp; c7f95f58 <_end+7bcdd8c/3862ae94> >>esp; c7f95f30 <_end+7bcdd64/3862ae94>
Trace; c0163794 <prune_dcache+194/280> Trace; c013d152 <kmem_cache_shrink+72/c0> Trace; c01666f7 <shrink_icache_memory+27/40> Trace; c013fdcf <try_to_free_pages_zone+8f/f0> Trace; c013ff78 <kswapd_balance_pgdat+78/c0> Trace; c013ffe8 <kswapd_balance+28/40> Trace; c014013a <kswapd+9a/c0> Trace; c01400a0 <kswapd+0/c0> Trace; c01059ce <arch_kernel_thread+2e/40> Trace; c01400a0 <kswapd+0/c0>
Code; c01665f5 <prune_icache+65/140> 00000000 <_EIP>: Code; c01665f5 <prune_icache+65/140> <===== 0: 8b 76 04 mov 0x4(%esi),%esi <===== Code; c01665f8 <prune_icache+68/140> 3: 8b 87 30 01 00 00 mov 0x130(%edi),%eax Code; c01665fe <prune_icache+6e/140> 9: a8 38 test $0x38,%al Code; c0166600 <prune_icache+70/140> b: 74 6e je 7b <_EIP+0x7b> Code; c0166602 <prune_icache+72/140> d: 81 fe 28 a9 32 c0 cmp $0xc032a928,%esi Code; c0166608 <prune_icache+78/140> 13: 75 00 jne 15 <_EIP+0x15> - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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