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Re: port-amd64/39283: Kernel crash on Dell Poweredge 2950
> Hi,
>
> The next time it crashes like this, please do "show reg". Take the value
> of
> 'rsp' and do something like this:
>
> x/Lx 0xffffffff12345678,40
>
> ... adding the ,40 at the end. That will dump some of the stack. Go
> through each value dumped, one at a time, until you find something useful
> giving each value to this command:
>
> x/I 0xffffffff12345678
>
> You will get a function name at some point - probably on the first value.
> It
> will show us where the call to NULL is being made from.
>
> Thanks,
> Andrew
>
Hi,
The machine hanged sometime tonight again, here is the stack dump, hope it
helps:
db{0}> show reg
ds 0x10
es 0xc4c8
fs 0x7
gs 0x8
rdi 0x6
rsi 0x3f8
rbp 0xffff80004f8ac508
rbx 0xffff80004f8ac518
rdx 0x8
rcx 0x6
rax 0x1
r8 0xffffffff80a2a98a copyright+0x8b48a
r9 0x1
r10 0xffff80004f8ac428
r11 0xffffffff802db6f0 comcnputc
r12 0x100
r13 0xffffffff809ea668 copyright+0x4b168
r14 0x6
r15 0x1
rip 0xffffffff80552aa5 breakpoint+0x5
cs 0x8
rflags 0x246
rsp 0xffff80004f8ac508
ss 0x10
netbsd:breakpoint+0x5: leave
db{0}> x/Lx 0xffff80004f8ac508,40
0xffff80004f8ac508: ffff80004f8ac608 ffffffff80490470
30000000
08 ffff80004f8ac618 ffff80004f8ac538
ffff80004f8ac618
ffff80004f8ac548 3f8 8
0xffff80004f8ac550: 6 ffffffff80a2a98a 0
0xffff80004f8ac568: ffffffff80cf6dc0 0 6
0xffff80004f8ac580: 1 ffff80004f8ac648 6
0xffff80004f8ac598: ffff800007dbf500 ffff80004b26a000
ffff8000
4f8ac608 ffffffff80487e61 ffff800000000000 3
0xffff80004f8ac5c8: 0 ffffffff801158ae 8
0xffff80004f8ac5e0: 7 ffff80004f8ac5f8
ffffffff
80cf6dc0 ffffffff809ea9c0 ffffffff807c8960
ffff80004f8ac648
ffffffff80487fc3 6008ac668 4
0xffff80004f8ac628: ffffffff80ccdf30 ffff80004b26a000
ffffffff
80ccdf30 3d ffff80004f8ac678
ffffffff8045db26
ffffffff80c1b640 ffffffff80ccde80 ffffffff80c1b640
0xffff80004f8ac670: 1 ffff80004f8ac6d8
ffffffff
8048e2fa ffff80004f8ac6d8 1ffffff80489153 0
0xffff80004f8ac6a0: ffffffff80481b0d 600000000
ffffffff
80ccde80 ffffffff80c1b640 1 0
0xffff80004f8ac6d0: 3d ffff80004f8ac6f8
ffffffff
8048e60c ffffffff80ccdff0 ffffffff80cbd630
ffff80004f8ac738
ffffffff80481b2e
db{0}> x/I 0xffff80004f8ac508
0xffff80004f8ac508: orb %al,%dh
db{0}> x/I 0xffff80004f8ac608
0xffff80004f8ac608: rex.w movb $0xff,0xffffffffff80004f(%rdx)
db{0}> x/I ffffffff80490470
netbsd:panic+0x260: jmp netbsd:panic+0x251
db{0}> x/I 3000000008
0x3000000008:fatal page fault in supervisor mode
trap type 6 code 0 rip ffffffff805532d7 cs 8 rflags 10216 cr2
7fbfc00c0000 cpl 8 rsp ffff80004f8abf50
kernel: page fault trap, code=0
Faulted in DDB; continuing...
db{0}> x/I ffff80004f8ac618
0xffff80004f8ac618: pushl $0x6008ac6
db{0}> x/I ffff80004f8ac538
0xffff80004f8ac538: rex.w ldsq 0xffffffffff80004f(%rdx),%rcx
db{0}> x/I ffff80004f8ac618
0xffff80004f8ac618: pushl $0x6008ac6
db{0}> x/I ffff80004f8ac548
0xffff80004f8ac548: orb %al,0(%rax)
db{0}> x/I 0xffff80004f8ac550
0xffff80004f8ac550: push %es
db{0}> x/I 0xffffffff80a2a98a
netbsd:copyright+0x8b48a: orb 0(%rax),%al
db{0}> x/I 0xffff80004f8ac568
0xffff80004f8ac568: shrb $0x80,0xffffffffffffffcf(%rbp)
db{0}> x/I 0xffffffff80cf6dc0
netbsd:ld_prime+0x2d00: call 0xffffffff812a89e0
db{0}> x/I 0xffff80004f8ac580
0xffff80004f8ac580: addl %eax,0(%rax)
db{0}> x/I 0xffff80004f8ac648
0xffff80004f8ac648: js 0xffff80004f8ac610
db{0}> x/I 0xffff80004f8ac598
0xffff80004f8ac598: addb %dh,%ch
db{0}> x/I 0xffff800007dbf500
0xffff800007dbf500: pop %es
db{0}> x/I 0xffff80004b26a000
0xffff80004b26a000: addb %al,0(%rax)
db{0}> x/I 0xffff8000
0xffff8000:fatal page fault in supervisor mode
trap type 6 code 0 rip ffffffff805532d7 cs 8 rflags 10217 cr2
7fbfc0003ff8 cpl 8 rsp ffff80004f8abf50
kernel: page fault trap, code=0
Faulted in DDB; continuing...
db{0}> x/I 0xffffffff80487e61
netbsd:lockdebug_dump+0x111: rex.wb movq 0x40(%r13),%rdi
db{0}> x/I 0xffff80004f8ac5c8
0xffff80004f8ac5c8: addb %al,0(%rax)
db{0}> x/I 0xffffffff801158ae
netbsd:Xspllower+0xe: movl %ebx,%eax
db{0}> x/I 0xffff80004f8ac5e0
0xffff80004f8ac5e0: pop %es
db{0}> x/I 0xffff80004f8ac5f8
0xffff80004f8ac5f8: shrb $0xff,0xffffffffffff809e(%rcx)
db{0}> x/I 0xffffffff80cf6dc0
netbsd:ld_prime+0x2d00: call 0xffffffff812a89e0
db{0}> x/I 0xffffffff809ea9c0
netbsd:copyright+0x4b4c0: popal
db{0}> x/I 0xffffffff807c8960
netbsd:__func__.7368: insb %dx,%es:(%rdi)
db{0}> x/I 0xffff80004f8ac648
0xffff80004f8ac648: js 0xffff80004f8ac610
db{0}> x/I 0xffffffff80487fc3
netbsd:lockdebug_abort1+0xd3: nop
db{0}> x/I 0xffff80004f8ac628
0xffff80004f8ac628: xorb %bl,%bh
db{0}> x/I ffffffff80ccdf30
netbsd:l2cap_pdu_pool+0xb0: addb $-0x60,%al
db{0}> x/I 0xffff80004b26a000
0xffff80004b26a000: addb %al,0(%rax)
db{0}> x/I 0xffff80004f8ac678
0xffff80004f8ac678: fadd %st(6),%st
db{0}> x/I 0xffffffff8045db26
netbsd:mutex_tryenter+0x1a6: jmp netbsd:mutex_tryenter+0x59
db{0}> x/I 0xffffffff80c1b640
netbsd:pool_allocator_kmem: loopne netbsd:pool_allocator_meta+0x2b
db{0}> x/I 0xffffffff80ccde80
netbsd:l2cap_pdu_pool: andb %ah,%al
db{0}> x/I 0xffffffff80c1b640
netbsd:pool_allocator_kmem: loopne netbsd:pool_allocator_meta+0x2b
db{0}> x/I 0xffff80004f8ac670
0xffff80004f8ac670: addl %eax,0(%rax)
db{0}> x/I 0xffff80004f8ac6d8
0xffff80004f8ac6d8: clc
db{0}> x/I 0x1ffffff80489153
0x1ffffff80489153:fatal protection fault in supervisor mode
trap type 4 code 0 rip ffffffff80554360 cs 8 rflags 10246 cr2
7fbfffe03330 cpl 8 rsp ffff80004f8abf10
kernel: protection fault trap, code=0
Faulted in DDB; continuing...
db{0}> x/I 0x0xffff80004f8ac6a0
Bad character in number
db{0}> x/I 0xffffffff80481b0d
netbsd:callback_run_roundrobin+0x2d: rex.rb movl 0x38(%r12),%r15d
db{0}> x/I 0xffff80004f8ac6f8
0xffff80004f8ac6f8: cmpb %al,%bh
db{0}> x/I 0xffffffff8048e60c
netbsd:pool_reclaim_callback+0x2c: rex.wr movq %r12,%rdi
db{0}> x/I 0xffffffff80ccdff0
netbsd:l2cap_pdu_pool+0x170: nop
db{0}> x/I 0xffffffff80cbd630
netbsd:kmem_map_store+0x130: addl $0x6,%eax
db{0}> x/I 0xffff80004f8ac738
0xffff80004f8ac738: testb $0xc7,%al
db{0}> x/I ffffffff80481b2e
netbsd:callback_run_roundrobin+0x4e: rex.b movl %eax,%r14d
Regards
Fredrik
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