Comment 3 for bug 854050

Reposting stack trace from AWS Forum:
http://1031641.210729 ------------ cut here ------------
http://1031641.210760 kernel BUG at /build/buildd/linux-2.6.38/mm/swapfile.c:2552!
http://1031641.210775 invalid opcode: 0000 1 SMP
http://1031641.210788 last sysfs file: /sys/devices/system/cpu/cpu1/cache/index2/shared_cpu_map
http://1031641.210799 Modules linked in: acpiphp
http://1031641.210813
http://1031641.210820 Pid: 21621, comm: apache2 Not tainted 2.6.38-8-virtual #42-Ubuntu
http://1031641.210840 EIP: 0061:<c0218816> EFLAGS: 00210246 CPU: 0
http://1031641.210865 EIP is at swap_count_continued.clone.15+0x1a6/0x1b0
http://1031641.210875 EAX: f57ba9c1 EBX: 000009c1 ECX: 80000000 EDX: 00000000
http://1031641.210884 ESI: ed01f540 EDI: 00000080 EBP: e6fa3e18 ESP: e6fa3e08
http://1031641.210893 DS: 007b ES: 007b FS: 00d8 GS: 00e0 SS: 0069
http://1031641.210903 Process apache2 (pid: 21621, ti=e6fa2000 task=df235860 task.ti=e6fa2000)
http://1031641.210915 Stack:
http://1031641.210924 ed3d8700 eadcfc00 00000040 0000c9c1 e6fa3e40 c021896d 00000080 c063655d
http://1031641.210956 e6fa3e40 0000c9c1 edc52000 0000c9c1 00000000 00000000 e6fa3e4c c0219820
http://1031641.210987 e72c8e20 e6fa3eac c0209471 00000000 80000000 00000041 c08c08c0 00000000
http://1031641.211018 Call Trace:
http://1031641.211028 <c021896d> swap_entry_free+0x14d/0x170
http://1031641.211044 <c063655d> ? _raw_spin_lock+0xd/0x10
http://1031641.211055 <c0219820> swap_free+0x20/0x30
http://1031641.211066 <c0209471> do_swap_page+0x3b1/0x670
http://1031641.211077 <c020aee9> handle_pte_fault+0x259/0x2f0
http://1031641.211090 <c0105a54> ? pte_mfn_to_pfn+0xa4/0xc0
http://1031641.211103 <c013c95c> ? kmap_atomic_prot+0x4c/0x120
http://1031641.211114 <c020bbe9> handle_mm_fault+0x109/0x190
http://1031641.211126 <c0639d00> ? do_page_fault+0x0/0x490
http://1031641.211136 <c0639e5e> do_page_fault+0x15e/0x490
http://1031641.211148 <c020f9ad> ? sys_brk+0xdd/0x110
http://1031641.211158 <c0639d00> ? do_page_fault+0x0/0x490
http://1031641.211169 <c063706f> error_code+0x67/0x6c
http://1031641.211177 Code: ff 89 f0 e8 3d 42 f2 ff 01 d8 8d 76 00 c6 00 00 ba 01 00 00 00 eb 9b 89 f8 3c 80 0f 94 c0 e9 90 fe ff ff 0f 0b 0f 0b 0f 0b 0f 0b <0f> 0b 90 8d b4 26 00 00 00 00 55 89 e5 57 56 53 83 ec 14 3e 8d
http://1031641.211372 EIP: <c0218816> swap_count_continued.clone.15+0x1a6/0x1b0 SS:ESP 0069:e6fa3e08
http://1031641.211406 --- end trace f28cba30297d4784 ---
{/code}

Edited by: aoghina on May 28, 2011 12:18 PM