I get the (different) non-fatal oopses on SGI IP22 (2.6.16-rc5) when
running "md5sum /dev/core". Two exampls are attached below. FWIW,
this works on i386.
sgi:/# md5sum /dev/core
Segmentation fault
MC Bus Error
GIO error 0x400:<TIME > @ 0x00090000
Data bus error, epc == ffffffff881b0cf0, ra == ffffffff880e06c0
Oops[#10]:
Cpu 0
$ 0 : 0000000000000000 0000000000000004 0000000000001000 0000000000000000
$ 4 : 00000000100033a8 ffffffff80090000 0000000000001000 0000000000091000
$ 8 : 0000000000000040 0000000000000000 0000000000000000 00000000000000b0
$12 : 00000000000000b0 00000000100043a8 ffffffff88090fc8 00000000000000b0
$16 : 0000000000001000 ffffffff80090000 0000000000001000 ffffffff8a6dfe88
$20 : 0000000000007000 0000000000001000 ffffffff8a6dfe88 00000000100033a8
$24 : 0000000000000000 000000002abd5ca0
$28 : ffffffff8a6dc000 ffffffff8a6dfb20 ffffffff88430000 ffffffff880e06c0
Hi : 0000000000000000
Lo : 0000000000000150
epc : ffffffff881b0cf0 both_aligned+0x10/0x64 Not tainted
ra : ffffffff880e06c0 read_kcore+0x220/0x7a0
Status: 3004cce3 KX SX UX KERNEL EXL IE
Cause : 1000401c
PrId : 00000460
Modules linked in: md5 ipv6
Process md5sum (pid: 1213, threadinfo=ffffffff8a6dc000, task=ffffffff8c0e0d58)
Stack : ffffffff8831a898 00000001000001e0 ffffffff8a6dfbf0 ffffffff8831a898
0000000300000088 ffffffff8a6dfb68 ffffffff8831a898 0000000400000618
ffffffff8c0e0d58 0052000000000000 0000000000000000 0000000000000000
0000000000000000 0000000000000000 766d6c696e757800 0000000000000000
726f6f743d2f6465 762f736461310000 0000000000000000 0000000000000000
0000000000000000 0000000000000000 0000000000000000 0000000000000000
0000000000000000 0000000000000000 0000000000000000 0000000000000000
0000000000000000 0000000000000000 0000000000000000 0000000000000000
0000000000000000 0000000000000000 0000000000000000 0000000000000000
0000000000000000 0000000000000000 0000000000000000 0000000000000000
...
Call Trace:
[<ffffffff88183c90>] avc_has_perm+0x68/0x98
[<ffffffff88183f70>] inode_has_perm+0x50/0xb8
[<ffffffff88041138>] getnstimeofday+0x18/0x50
[<ffffffff88058cf8>] ktime_get_ts+0x60/0xb8
[<ffffffff881840b8>] file_has_perm+0xe0/0x108
[<ffffffff881ea24c>] i8042_interrupt+0x64/0x4e8
[<ffffffff880902bc>] vfs_read+0xfc/0x1b8
[<ffffffff88091014>] sys_read+0x4c/0x90
[<ffffffff8801de8c>] handle_sys+0x12c/0x148
sgi:/# md5sum /dev/core
Segmentation fault
Code: 11000017 30d8003f 00000000 <dca80000> dca90008 dcaa0010 dcab0018 64c6ffc0 dcac0020
MC Bus Error
GIO error 0x400:<TIME > @ 0x00090000
Data bus error, epc == ffffffff881b0cf0, ra == ffffffff880e06c0
Oops[#11]:
Cpu 0
$ 0 : 0000000000000000 0000000000000004 0000000000001000 0000000000000000
$ 4 : 00000000100033a8 ffffffff80090000 0000000000001000 0000000000091000
$ 8 : 0000000000000040 0000000000000000 0000000000000000 00000000000000b0
$12 : 00000000000000b0 00000000100043a8 ffffffff88090fc8 00000000000000b0
$16 : 0000000000001000 ffffffff80090000 0000000000001000 ffffffff8a6dfe88
$20 : 0000000000007000 0000000000001000 ffffffff8a6dfe88 00000000100033a8
$24 : 0000000000000000 000000002abd5ca0
$28 : ffffffff8a6dc000 ffffffff8a6dfb20 ffffffff88430000 ffffffff880e06c0
Hi : 0000000000000000
Lo : 0000000000000150
epc : ffffffff881b0cf0 both_aligned+0x10/0x64 Not tainted
ra : ffffffff880e06c0 read_kcore+0x220/0x7a0
Status: 1004cce3 KX SX UX KERNEL EXL IE
Cause : 1000401c
PrId : 00000460
Modules linked in: md5 ipv6
Process md5sum (pid: 1214, threadinfo=ffffffff8a6dc000, task=ffffffff8c0e0d58)
Stack : ffffffff88041ccc ffffffff88420000 0000000000000000 ffffffff884250b8
000000000000000a ffffffff88420000 ffffffff88041e0c 0000000000000000
000000003004cce0 0000000000000000 0000000000000001 0000000000000003
0000000000000002 ffffffff8a6dfdc0 0000000000000002 ffffffff88041f88
0000000000008000 ffffffff88005ab8 0000000000000000 0000000000000004
0000000000000000 ffffffff884344f0 0000000000000001 0000000000000003
0000000000000006 0000000000000002 0000000000000000 0000000000000000
0000000000000000 0000000000008000 0000000000000008 ffffffff881b1848
ffffffff88090fc8 000000000000b0df 0000000000000006 0000000000000000
0000000000000001 0000000000000003 0000000000000002 ffffffff8a6dfdc0
...
Call Trace:
[<ffffffff88041ccc>] tasklet_action+0xc4/0x140
[<ffffffff88041e0c>] __do_softirq+0xc4/0x1a0
[<ffffffff88041f88>] do_softirq+0xa0/0xd0
[<ffffffff88005ab8>] indyIRQ+0x118/0x180
[<ffffffff881b1848>] memset_partial+0x44/0x60
[<ffffffff88090fc8>] sys_read+0x0/0x90
[<ffffffff88183c90>] avc_has_perm+0x68/0x98
[<ffffffff88183f70>] inode_has_perm+0x50/0xb8
[<ffffffff88041138>] getnstimeofday+0x18/0x50
[<ffffffff88058cf8>] ktime_get_ts+0x60/0xb8
[<ffffffff881840b8>] file_has_perm+0xe0/0x108
[<ffffffff881ea24c>] i8042_interrupt+0x64/0x4e8
[<ffffffff880902bc>] vfs_read+0xfc/0x1b8
[<ffffffff88091014>] sys_read+0x4c/0x90
[<ffffffff8801de8c>] handle_sys+0x12c/0x148
Code: 11000017 30d8003f 00000000 <dca80000> dca90008 dcaa0010 dcab0018 64c6ffc0 dcac0020
--
Martin Michlmayr
http://www.cyrius.com/
