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[Bug-hurd] Bug#71781: Bug-hurd] Bug#71781: [hurd] dh_compress causes ker
From: |
Neal H Walfield |
Subject: |
[Bug-hurd] Bug#71781: Bug-hurd] Bug#71781: [hurd] dh_compress causes kernel panic |
Date: |
Tue, 19 Sep 2000 18:23:32 -0500 |
User-agent: |
Mutt/1.2i |
On Tue, Sep 19, 2000 at 06:05:19PM -0400, Roland McGrath wrote:
> > I rebuilt the kernel to include floppy support. This time, I got the
> > expected result, a panic. The result of addr2line is:
> >
> > /gnumach/build/i386/linux/../../../i386/linux/../../linux/dev/glue/block.c:940
> >
> > This is the function init_partition as previously reported.
>
> Well, that line number has no code on it, so it's hard to tell exactly
> where the PC value really lines. Can you run gdb on your binary, do "info
> line *PC" and "disas PC" and send me the output? It looks like it must be
> either a null pointer in thread->pcb (which would be some bad corruption),
> or a null pointer as the PART argument. You could insert printfs to see
> what is up.
This should get you started.
(gdb) info line *(0x146d82)
Line 939 of "../../../i386/linux/../../linux/dev/glue/block.c"
starts at address 0x146d7e <init_partition+18>
and ends at 0x146d8f <init_partition+35>.
(gdb) disas 0x146d82
Dump of assembler code for function init_partition:
0x146d6c <init_partition>: push %ebp
0x146d6d <init_partition+1>: mov %esp,%ebp
0x146d6f <init_partition+3>: sub $0x2c,%esp
0x146d72 <init_partition+6>: push %edi
0x146d73 <init_partition+7>: push %esi
0x146d74 <init_partition+8>: push %ebx
0x146d75 <init_partition+9>: mov 0x10(%ebp),%eax
0x146d78 <init_partition+12>: mov 0xc(%eax),%eax
0x146d7b <init_partition+15>: mov %eax,0xfffffffc(%ebp)
0x146d7e <init_partition+18>: mov 0x1a1134,%eax
0x146d83 <init_partition+23>: mov 0x24(%eax),%eax
0x146d86 <init_partition+26>: mov 0xb0(%eax),%eax
0x146d8c <init_partition+32>: mov %eax,0xfffffff8(%ebp)
0x146d8f <init_partition+35>: mov 0xfffffffc(%ebp),%edx
0x146d92 <init_partition+38>: mov 0x8(%edx),%ecx
0x146d95 <init_partition+41>: mov $0x1,%eax
0x146d9a <init_partition+46>: shl %cl,%eax
0x146d9c <init_partition+48>: dec %eax
0x146d9d <init_partition+49>: mov %eax,0xfffffff4(%ebp)
0x146da0 <init_partition+52>: test %edx,%edx
0x146da2 <init_partition+54>: jne 0x146db2 <init_partition+70>
0x146da4 <init_partition+56>: mov 0x18(%ebp),%ecx
0x146da7 <init_partition+59>: movl $0xffffffff,(%ecx)
0x146dad <init_partition+65>: jmp 0x146fe0 <init_partition+628>
0x146db2 <init_partition+70>: mov 0x10(%ebp),%eax
0x146db5 <init_partition+73>: mov 0x14(%eax),%ebx
0x146db8 <init_partition+76>: test %ebx,%ebx
0x146dba <init_partition+78>: jne 0x146f56 <init_partition+490>
0x146dc0 <init_partition+84>: add $0xfffffff4,%esp
0x146dc3 <init_partition+87>: mov 0xfffffffc(%ebp),%edx
0x146dc6 <init_partition+90>: mov 0xc(%edx),%eax
0x146dc9 <init_partition+93>: shl $0x2,%eax
0x146dcc <init_partition+96>: imul 0x10(%edx),%eax
0x146dd0 <init_partition+100>: push %eax
0x146dd1 <init_partition+101>: call 0x10f68c <kalloc>
0x146dd6 <init_partition+106>: mov %eax,%edi
0x146dd8 <init_partition+108>: mov 0x10(%ebp),%ecx
0x146ddb <init_partition+111>: mov %edi,0x14(%ecx)
0x146dde <init_partition+114>: add $0x10,%esp
0x146de1 <init_partition+117>: test %edi,%edi
0x146de3 <init_partition+119>: jne 0x146df0 <init_partition+132>
0x146de5 <init_partition+121>: mov $0x9cc,%eax
0x146dea <init_partition+126>: jmp 0x146fe2 <init_partition+630>
0x146def <init_partition+131>: nop
0x146df0 <init_partition+132>: mov 0xfffffffc(%ebp),%eax
0x146df3 <init_partition+135>: mov 0xc(%eax),%esi
0x146df6 <init_partition+138>: shl $0x2,%esi
0x146df9 <init_partition+141>: imul 0x10(%eax),%esi
0x146dfd <init_partition+145>: mov %esi,%ecx
0x146dff <init_partition+147>: shr $0x2,%ecx
0x146e02 <init_partition+150>: mov %ebx,%eax
0x146e04 <init_partition+152>: mov %esi,%edx
0x146e06 <init_partition+154>: cld
0x146e07 <init_partition+155>: repz stos %eax,%es:(%edi)
0x146e09 <init_partition+157>: test $0x2,%dl
0x146e0c <init_partition+160>: je 0x146e10 <init_partition+164>
0x146e0e <init_partition+162>: stos %ax,%es:(%edi)
0x146e10 <init_partition+164>: test $0x1,%dl
0x146e13 <init_partition+167>: je 0x146e16 <init_partition+170>
0x146e15 <init_partition+169>: stos %al,%es:(%edi)
0x146e16 <init_partition+170>: mov $0x1,%ebx
0x146e1b <init_partition+175>: mov 0xfffffffc(%ebp),%ecx
0x146e1e <init_partition+178>: cmp 0xc(%ecx),%ebx
0x146e21 <init_partition+181>: jge 0x146f56 <init_partition+490>
0x146e27 <init_partition+187>: mov %ebx,%eax
0x146e29 <init_partition+189>: mov 0xc(%ebp),%edx
0x146e2c <init_partition+192>: or (%edx),%ax
0x146e2f <init_partition+195>: mov 0xfffffff8(%ebp),%ecx
0x146e32 <init_partition+198>: mov %ax,0x2(%ecx)
0x146e36 <init_partition+202>: movzbl %al,%edi
0x146e39 <init_partition+205>: and 0xfffffff4(%ebp),%edi
0x146e3c <init_partition+208>: mov 0xfffffffc(%ebp),%edx
0x146e3f <init_partition+211>: mov 0x18(%edx),%eax
0x146e42 <init_partition+214>: lea 0x1(%ebx),%ecx
0x146e45 <init_partition+217>: mov %ecx,0xfffffff0(%ebp)
0x146e48 <init_partition+220>: cmpl $0x0,0x4(%eax,%edi,8)
0x146e4d <init_partition+225>: jle 0x146f47 <init_partition+475>
0x146e53 <init_partition+231>: cmpl $0x0,(%eax,%edi,8)
0x146e57 <init_partition+235>: jl 0x146f47 <init_partition+475>
0x146e5d <init_partition+241>: movl $0x5,0x1a0c44
0x146e67 <init_partition+251>: mov 0xfffffff8(%ebp),%eax
0x146e6a <init_partition+254>: movw $0x0,0x10(%eax)
0x146e70 <init_partition+260>: movw $0x0,0x4(%eax)
0x146e76 <init_partition+266>: mov 0x10(%ebp),%ecx
0x146e79 <init_partition+269>: mov 0x4(%ecx),%edx
0x146e7c <init_partition+272>: cmpl $0x0,0x1c(%edx)
0x146e80 <init_partition+276>: je 0x146e9d <init_partition+305>
0x146e82 <init_partition+278>: add $0xfffffff8,%esp
0x146e85 <init_partition+281>: add $0x4,%eax
0x146e88 <init_partition+284>: push %eax
0x146e89 <init_partition+285>: mov 0xfffffff8(%ebp),%eax
0x146e8c <init_partition+288>: push %eax
0x146e8d <init_partition+289>: mov 0x1c(%edx),%eax
0x146e90 <init_partition+292>: call *%eax
0x146e92 <init_partition+294>: add $0x10,%esp
0x146e95 <init_partition+297>: test %eax,%eax
0x146e97 <init_partition+299>: jne 0x146f47 <init_partition+475>
0x146e9d <init_partition+305>: add $0xfffffff4,%esp
0x146ea0 <init_partition+308>: mov 0xfffffff8(%ebp),%edx
0x146ea3 <init_partition+311>: movzwl 0x2(%edx),%eax
0x146ea7 <init_partition+315>: push %eax
0x146ea8 <init_partition+316>: call 0x146be4 <read_bsd_label>
0x146ead <init_partition+321>: mov %eax,%esi
0x146eaf <init_partition+323>: add $0x10,%esp
0x146eb2 <init_partition+326>: test %esi,%esi
0x146eb4 <init_partition+328>: jne 0x146ecb <init_partition+351>
0x146eb6 <init_partition+330>: add $0xfffffff4,%esp
0x146eb9 <init_partition+333>: mov 0xfffffff8(%ebp),%ecx
0x146ebc <init_partition+336>: movzwl 0x2(%ecx),%eax
0x146ec0 <init_partition+340>: push %eax
0x146ec1 <init_partition+341>: call 0x146c80 <read_vtoc>
0x146ec6 <init_partition+346>: mov %eax,%esi
0x146ec8 <init_partition+348>: add $0x10,%esp
0x146ecb <init_partition+351>: mov 0x10(%ebp),%eax
0x146ece <init_partition+354>: mov 0x4(%eax),%edx
0x146ed1 <init_partition+357>: cmpl $0x0,0x20(%edx)
0x146ed5 <init_partition+361>: je 0x146eed <init_partition+385>
0x146ed7 <init_partition+363>: add $0xfffffff8,%esp
0x146eda <init_partition+366>: mov 0xfffffff8(%ebp),%eax
0x146edd <init_partition+369>: add $0x4,%eax
0x146ee0 <init_partition+372>: push %eax
0x146ee1 <init_partition+373>: mov 0xfffffff8(%ebp),%ecx
0x146ee4 <init_partition+376>: push %ecx
0x146ee5 <init_partition+377>: mov 0x20(%edx),%eax
0x146ee8 <init_partition+380>: call *%eax
--
Neal H Walfield
University of Massachusetts at Lowell
neal@walfield.org or nwalfiel@cs.uml.edu
- Bug#71781: [Bug-hurd] Bug#71781: [hurd] dh_compress causes kernel panic, Neal H Walfield, 2000/09/17
- Bug#71781: [Bug-hurd] Bug#71781: [hurd] dh_compress causes kernel panic, Roland McGrath, 2000/09/17
- [Bug-hurd] Bug#71781: Bug-hurd] Bug#71781: [hurd] dh_compress causes kernel panic, Marcus Brinkmann, 2000/09/19
- [Bug-hurd] Bug#71781: Bug-hurd] Bug#71781: [hurd] dh_compress causes kernel panic, Neal H Walfield, 2000/09/19
- [Bug-hurd] Bug#71781: Bug-hurd] Bug#71781: [hurd] dh_compress causes kernel panic, Roland McGrath, 2000/09/19
- [Bug-hurd] Bug#71781: Bug-hurd] Bug#71781: [hurd] dh_compress causes kernel panic, Neal H Walfield, 2000/09/19
- [Bug-hurd] Bug#71781: Bug-hurd] Bug#71781: [hurd] dh_compress causes kernel panic, Roland McGrath, 2000/09/19
- [Bug-hurd] Bug#71781: Bug-hurd] Bug#71781: [hurd] dh_compress causes kernel panic,
Neal H Walfield <=
- [Bug-hurd] Bug#71781: Bug-hurd] Bug#71781: [hurd] dh_compress causes kernel panic, Roland McGrath, 2000/09/19
- [Bug-hurd] Bug#71781: Bug-hurd] Bug#71781: [hurd] dh_compress causes kernel panic, Neal H Walfield, 2000/09/19
- [Bug-hurd] Bug#71781: Bug-hurd] Bug#71781: [hurd] dh_compress causes kernel panic, Marcus Brinkmann, 2000/09/20
- [Bug-hurd] Bug#71781: Bug-hurd] Bug#71781: [hurd] dh_compress causes kernel panic, Neal H Walfield, 2000/09/20
- [Bug-hurd] Bug#71781: Bug-hurd] Bug#71781: [hurd] dh_compress causes kernel panic, Marcus Brinkmann, 2000/09/20