Hello,
This Oops is reproductible. I have decoded the Oops:
No modules in ksyms, skipping objects
No ksyms, skipping lsmod
Nov 23 14:26:47 hilbert kernel: Unable to handle kernel NULL pointer
dereference
Nov 23 14:26:48 hilbert kernel: tsk->{mm,active_mm}->context = 00005058
Nov 23 14:26:48 hilbert kernel: tsk->{mm,active_mm}->pgd = fc12d000
Nov 23 14:26:48 hilbert kernel: \|/ ____ \|/
Nov 23 14:26:48 hilbert kernel: "@'/ ,. \`@"
Nov 23 14:26:48 hilbert kernel: /_| \__/ |_\
Nov 23 14:26:48 hilbert kernel: \__U_/
Nov 23 14:26:48 hilbert kernel: tar(13387): Oops [#1]
Nov 23 14:26:48 hilbert kernel: PSR: 400000c2 PC: f008bd8c NPC: f008bd90
Y: 00000000 Not tainted
Using defaults from ksymoops -t elf32-sparc -a sparc
Nov 23 14:26:48 hilbert kernel: PC: <pipe_readv+0xac/0x440>
Nov 23 14:26:48 hilbert kernel: Caller[f008c140]: pipe_read+0x20/0x28
Nov 23 14:26:48 hilbert kernel: Caller[f007dee8]: vfs_read+0xa0/0x16c
Nov 23 14:26:48 hilbert kernel: Caller[f007eb38]: sys_read+0x38/0x64
Nov 23 14:26:48 hilbert kernel: Caller[f0015a3c]:
syscall_is_too_hard+0x3c/0x40
Nov 23 14:26:48 hilbert kernel: Caller[0003df90]: 0x3df98
Nov 23 14:26:49 hilbert kernel: Instruction DUMP: 1a800003 fa04a00c
a810001b <c207600c> 90100013 9fc04000 92100012 80a22000 128000b9
>>PC; f008bd8c <pipe_readv+2f8/4d4> <=====
Trace; f008c140 <do_pipe+158/28c>
Trace; f007dee8 <vfs_readv+6c/70>
Trace; f007eb38 <__fput+8c/1b0>
Trace; f0015a3c <linux_sparc_syscall+0/18>
Trace; 0003df90 Before first symbol
Code; f008bd80 <pipe_readv+2ec/4d4>
00000000 <_PC>:
Code; f008bd80 <pipe_readv+2ec/4d4>
0: 1a 80 00 03 bcc c <_PC+0xc>
Code; f008bd84 <pipe_readv+2f0/4d4>
4: fa 04 a0 0c ld [ %l2 + 0xc ], %i5
Code; f008bd88 <pipe_readv+2f4/4d4>
8: a8 10 00 1b mov %i3, %l4
Code; f008bd8c <pipe_readv+2f8/4d4> <=====
c: c2 07 60 0c ld [ %i5 + 0xc ], %g1 <=====
Code; f008bd90 <pipe_readv+2fc/4d4>
10: 90 10 00 13 mov %l3, %o0
Code; f008bd94 <pipe_readv+300/4d4>
14: 9f c0 40 00 call %g1
Code; f008bd98 <pipe_readv+304/4d4>
18: 92 10 00 12 mov %l2, %o1
Code; f008bd9c <pipe_readv+308/4d4>
1c: 80 a2 20 00 cmp %o0, 0
Code; f008bda0 <pipe_readv+30c/4d4>
20: 12 80 00 b9 bne 304 <_PC+0x304>
Code; f008bda4 <pipe_readv+310/4d4>
24: 00 00 00 00 unimp 0
1 error issued. Results may not be reliable.
hilbert:/var/log#
I don't understand the last message... Any idea ?
Regards,
JKB
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