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xen-users
[Xen-users] Xen 3.1.3 / Kernel 2.6.18.8 "NULL pointer dereference" Panic
Hey y'all,
Has anybody ever seen or have any information on a kernel panic such as
the paste below? It occurred in a VM when a user was removing a large
number of files. There was no mention of anything in dom0's logs or in
"xm dmesg".
This machine is a Dell PowerEdge 1950 running Xen 3.1.3 64-bit with
32-bit dom0 and domU (PAE) kernels.
Feb 13 14:35:25 build kernel: BUG: unable to handle kernel NULL pointer
dereference at virtual address 00000004
Feb 13 14:35:25 build kernel: printing eip:
Feb 13 14:35:25 build kernel: c01726bb
Feb 13 14:35:25 build kernel: 15253000 -> *pde = 00000003:9b471027
Feb 13 14:35:25 build kernel: 1dbeb000 -> *pme = 00000000:00000000
Feb 13 14:35:25 build kernel: Oops: 0002 [#1]
Feb 13 14:35:25 build kernel: SMP
Feb 13 14:35:25 build kernel: Modules linked in:
Feb 13 14:35:25 build kernel: CPU: 0
Feb 13 14:35:25 build kernel: EIP: 0061:[<c01726bb>] Not tainted VLI
Feb 13 14:35:25 build kernel: EFLAGS: 00010082 (2.6.18.8-32bit-4-xenU #1)
Feb 13 14:35:25 build kernel: EIP is at free_block+0x8b/0x120
Feb 13 14:35:25 build kernel: eax: 00001000 ebx: c0866180 ecx:
c5e5a000 edx: 00000000
Feb 13 14:35:25 build kernel: esi: c5e5ac0c edi: c1712f40 ebp:
c09c0400 esp: d3215ee4
Feb 13 14:35:26 build kernel: ds: 007b es: 007b ss: 0069
Feb 13 14:35:26 build kernel: Process rm (pid: 11371, ti=d3214000
task=c1767a90 task.ti=d3214000)
Feb 13 14:35:26 build kernel: Stack: 00000680 0000001b 0000000b c09c03d4
0000001b c1712f40 0000001b c017227a
Feb 13 14:35:26 build kernel: 00000000 dc3ea3ec ca3584c4 c09c03c0
c0866180 c09c03c0 c1712f40 00000000
Feb 13 14:35:26 build kernel: ca35842c c0172566 00000003 00000000
cf256000 d6f98d94 ca3584c4 c0201ced
Feb 13 14:35:26 build kernel: Call Trace:
Feb 13 14:35:26 build kernel: [<c017227a>] cache_flusharray+0x5a/0xd0
Feb 13 14:35:26 build kernel: [<c0172566>] kmem_cache_free+0x106/0x130
Feb 13 14:35:26 build kernel: [<c0201ced>] ext3_destroy_inode+0x1d/0x30
Feb 13 14:35:26 build kernel: [<c0189d15>] do_unlinkat+0xf5/0x160
Feb 13 14:35:26 build kernel: [<c0107f62>] do_syscall_trace+0x222/0x235
Feb 13 14:35:26 build kernel: [<c01053a3>] syscall_call+0x7/0xb
Feb 13 14:35:26 build kernel: Code: 03 15 10 59 7f c0 8b 02 f6 c4 40 0f
85 8b 00 00 00 8b 02 84 c0 0f 89 8a 00 00 00 8b 4a 1c 8b 44 24 20 8b 11
8b 5c 87 30 8b 41 0
4 <89> 42 04 89 10 31 d2 2b 71 0c c7 01 00 01 10 00 c7 41 04 00 02
Feb 13 14:35:26 build kernel: EIP: [<c01726bb>] free_block+0x8b/0x120
SS:ESP 0069:d3215ee4
Thanks.
--
Joshua West
Systems Engineer
Brandeis University
http://www.brandeis.edu
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