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SubjectMea Culpa (was NFS file locking broken)
All,

I hit send without thinking. The trace in my previous message made no
sense. This should be more useful:


> On server:
>
> svc: unknown procedure (15)
> kfree: Bad obj c0211925
> Unable to handle kernel NULL pointer dereference at virtual address 00000000
> current->tss.cr3 = 00101000, <r3 = 00101000
> *pde = 00000000
> Oops: 0002
> CPU: 0
> EIP: 0010:[<c0121a4b>]
> EFLAGS: 00013286
> eax: 0000001b ebx: c0266330 ecx: c0b82000 edx: c0213f54
> esi: c0211925 edi: c0988b80 ebp: c0988330 esp: c0b09ec0
> ds: 0018 es: 0018 ss: 0018
> Process lockd (pid: 131, process nr: 22, stackpage=c0b09000)
> Stack: c0931000 c0931040 c0988b80 c0988330 c2686a90 01173bb7 c014d00d c0211925
> c014eba7 c0931008 00000000 00000000 c0931000 c014ed35 c0931000 00000000
> c0988300 c0988410 c0085000 c0217e30 00000017 c014f804 c0085000 c0b09f34
> Call Trace: [<c014d00d>] [<c014eba7>] [<c014ed35>] [<c014f804>] [<c014f9d6>] [<c014f940>] [<c0184e88>]
> [<c0186a2e>] [<c014e5bd>] [<c0184a8f>] [<c014e3a0>]
> Code: c7 05 00 00 00 00 00 00 00 00 83 c4 08 5b 5e 5f 5d 83 c4 08


Wrong System.map used for the trace decode. Try this:

Using `/lib/modules/2.1.117/System.map' to map addresses to symbols.

>>EIP: c0121a4b <kfree+1ab/1c0>
Trace: c014d00d <nlmclnt_freegrantargs+d/20>
Trace: c014eba7 <nlmsvc_delete_block+107/120>
Trace: c014ed35 <nlmsvc_lock+f5/320>
Trace: c014f804 <nlmsvc_retrieve_args+b4/100>
Trace: c014f9d6 <nlmsvc_proc_lock+96/e0>
Trace: c014f9d6 <nlmsvc_proc_lock+96/e0>
Trace: c0184e88 <svc_process+258/590>
Trace: c0186a2e <svc_recv+1ee/320>
Trace: c014e5bd <lockd+21d/2f0>
Trace: c0184a8f <svc_create_thread+bf/100>
Trace: c014e5bd <lockd+21d/2f0>
Code: c0121a4b <kfree+1ab/1c0> movl $0x0,0x0
Code: c0121a55 <kfree+1b5/1c0> addl $0x8,%esp
Code: c0121a58 <kfree+1b8/1c0> popl %ebx
Code: c0121a59 <kfree+1b9/1c0> popl %esi
Code: c0121a5a <kfree+1ba/1c0> popl %edi
Code: c0121a5b <kfree+1bb/1c0> popl %ebp
Code: c0121a5c <kfree+1bc/1c0> addl $0x8,%esp
Code: c0121a5f <kfree+1bf/1c0>

Steve




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