Re: 2.6.23-rc7-mm1

Kamalesh Babulal
2007-09-24T12:55:52Z

Hi Andrew,

Kernel oops over x86_64 (AMD Opteron(tm) Processor 844)

Unable to handle kernel NULL pointer dereference at 0000000000000070 RIP:
[<ffffffff80290630>] fasync_helper+0x6b/0xe4
PGD 181949067 PUD 182228067 PMD 0
Oops: 0000 [1] SMP
last sysfs file: /devices/system/node/possible
CPU 3
Modules linked in:
Pid: 18156, comm: fcntl23 Not tainted 2.6.23-rc7-mm1-autokern1 #1
RIP: 0010:[<ffffffff80290630>] [<ffffffff80290630>] fasync_helper+0x6b/0xe4
RSP: 0000:ffff810082bdfdb8 EFLAGS: 00010046
RAX: 00000000fffffff4 RBX: ffff8101821a9000 RCX: 0000000000000000
RDX: ffff8101821a9000 RSI: ffff810180026900 RDI: ffffffff806286b8
RBP: ffff810082bdfde8 R08: 0000000000000002 R09: ffff81018072124b
R10: 0000000000000000 R11: 0000000000000002 R12: 0000000000000070
R13: 0000000000000001 R14: 0000000000000000 R15: ffff810181875cc0
FS: 0000000000000000(0000) GS:ffff810180721380(0063) knlGS:00000000556aa2a0
CS: 0010 DS: 002b ES: 002b CR0: 0000000080050033
CR2: 0000000000000070 CR3: 00000001818c4000 CR4: 00000000000006e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400
Process fcntl23 (pid: 18156, threadinfo ffff810082bde000, task ffff810082309530)
last branch before last exception/interrupt
from [<ffffffff804ad9e0>] _write_lock_irq+0x14/0x15
to [<ffffffff80290630>] fasync_helper+0x6b/0xe4
Stack: 0000000400000004 0000000000000000 0000000000000000 ffff810181875cc0
0000000000000004 ffff810182b3d238 ffff810082bdfee8 ffffffff802939cc
ffff810082bdfe18 0000000000000000 0000000000000000 ffff810082bdfe10
Call Trace:
[<ffffffff802939cc>] fcntl_setlease+0x99/0x101
[<ffffffff80290370>] sys_fcntl+0x2a3/0x2ce
[<ffffffff802b14cf>] compat_sys_fcntl64+0x2ee/0x2ff
[<ffffffff80224292>] ia32_sysret+0x0/0xa
DWARF2 unwinder stuck at ia32_sysret+0x0/0xa
Leftover inexact backtrace:
Code: 49 8b 34 24 4c 89 e2 48 85 f6 74 2a 4c 39 7e 10 75 1a 45 85
RIP [<ffffffff80290630>] fasync_helper+0x6b/0xe4
RSP <ffff810082bdfdb8>
CR2: 0000000000000070

--
Thanks & Regards,
Kamalesh Babulal,
Linux Technology Center,
IBM, ISTL.