On Sat, Oct 18, 2008 at 10:57:18AM +0100, Dave Haywood wrote:
> [ 372.980378] BUG: unable to handle kernel NULL pointer dereference at 00000020
> [ 372.980400] IP: [<c0323d5c>] sock_poll+0xc/0x20
> [ 372.980425] *pde = 00000000
> [ 372.980435] Oops: 0000 [#1]
> [ 372.980574] last sysfs file: /sys/kernel/uevent_seqnum
> [ 372.980677]
> [ 372.980773] Pid: 5150, comm: squid Not tainted (2.6.27-05178-g2e532d6 #257) Deskpro
> [ 372.980934] EIP: 0060:[<c0323d5c>] EFLAGS: 00010246 CPU: 0
> [ 372.981036] EIP is at sock_poll+0xc/0x20
> [ 372.981133] EAX: cbf3c460 EBX: 00000000 ECX: 00000000 EDX: cddc8280
> [ 372.981235] ESI: cbf27f48 EDI: cd938ae0 EBP: cd938aec ESP: cbf27f20
> [ 372.981337] DS: 007b ES: 007b FS: 0000 GS: 0033 SS: 0068
> [ 372.981440] Process squid (pid: 5150, ti=cbf26000 task=cbec0510 task.ti=cbf26000)
> [ 372.981601] Stack:
> [ 372.981692] 00000296 c0195e8a cbf27f48 00002000 08553940 cbfba180 cbfba19c cbfba224
> [ 372.982004] 00000000 cbf26000 cd938aec cd938d2c cbfba224 cbfba180 00000003 cbf26000
> [ 372.982430] c01963c7 00002000 08553940 cd938aec cbfba1f8 00000246 ca43f2d4 ca43f2c0
> [ 372.982940] Call Trace:
> [ 372.983033] [<c0195e8a>] ep_send_events+0xea/0x2b0
> [ 372.983167] [<c01963c7>] ep_poll+0x57/0x1c0
> [ 372.983297] [<c016ed9e>] fget+0x9e/0xd0
> [ 372.983443] [<c01965d8>] sys_epoll_wait+0xa8/0xb0
Try this:
http://marc.info/?l=linux-kernel&m=122428548613067&w=2
Alexey Dobriyan wrote:
> On Sat, Oct 18, 2008 at 10:57:18AM +0100, Dave Haywood wrote:
>
>> [ 372.980378] BUG: unable to handle kernel NULL pointer dereference at 00000020
>> [ 372.980400] IP: [<c0323d5c>] sock_poll+0xc/0x20
>> [ 372.980425] *pde = 00000000
>> [ 372.980435] Oops: 0000 [#1]
>> [ 372.980574] last sysfs file: /sys/kernel/uevent_seqnum
>> [ 372.980677]
>> [ 372.980773] Pid: 5150, comm: squid Not tainted (2.6.27-05178-g2e532d6 #257) Deskpro
>> [ 372.980934] EIP: 0060:[<c0323d5c>] EFLAGS: 00010246 CPU: 0
>> [ 372.981036] EIP is at sock_poll+0xc/0x20
>> [ 372.981133] EAX: cbf3c460 EBX: 00000000 ECX: 00000000 EDX: cddc8280
>> [ 372.981235] ESI: cbf27f48 EDI: cd938ae0 EBP: cd938aec ESP: cbf27f20
>> [ 372.981337] DS: 007b ES: 007b FS: 0000 GS: 0033 SS: 0068
>> [ 372.981440] Process squid (pid: 5150, ti=cbf26000 task=cbec0510 task.ti=cbf26000)
>> [ 372.981601] Stack:
>> [ 372.981692] 00000296 c0195e8a cbf27f48 00002000 08553940 cbfba180 cbfba19c cbfba224
>> [ 372.982004] 00000000 cbf26000 cd938aec cd938d2c cbfba224 cbfba180 00000003 cbf26000
>> [ 372.982430] c01963c7 00002000 08553940 cd938aec cbfba1f8 00000246 ca43f2d4 ca43f2c0
>> [ 372.982940] Call Trace:
>> [ 372.983033] [<c0195e8a>] ep_send_events+0xea/0x2b0
>> [ 372.983167] [<c01963c7>] ep_poll+0x57/0x1c0
>> [ 372.983297] [<c016ed9e>] fget+0x9e/0xd0
>> [ 372.983443] [<c01965d8>] sys_epoll_wait+0xa8/0xb0
>>
>
> Try this:
> http://marc.info/?l=linux-kernel&m=122428548613067&w=2
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Thanks Alexy: This patch fixed it for me. 6 hours uptime with no problems.
Tested-By: Dave Haywood <[email protected]>
Dave.