Joshua West
2008-Feb-15 00:52 UTC
[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 _______________________________________________ Xen-users mailing list Xen-users@lists.xensource.com http://lists.xensource.com/xen-users
Todd Deshane
2008-Feb-18 03:30 UTC
Re: [Xen-users] Xen 3.1.3 / Kernel 2.6.18.8 "NULL pointer dereference" Panic
Hi, On Feb 14, 2008 7:52 PM, Joshua West <jwest@brandeis.edu> wrote:> 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". >I have seen a crash like this under similar circumstances. I don''t think I was able to track down the problem though. I am currently working with 3.2 from source and haven''t yet run across the problem. From the strace it looks like an ext3 driver problem maybe. Todd> > 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 > > > _______________________________________________ > Xen-users mailing list > Xen-users@lists.xensource.com > http://lists.xensource.com/xen-users >_______________________________________________ Xen-users mailing list Xen-users@lists.xensource.com http://lists.xensource.com/xen-users