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This is the full output from kdb when trying to create a snapshot on an XFS
volume for me.
What I was going to do next was follow Andreas Dilger's sugestion and try
again.
Entering kdb (current=0xc7228000, pid 1435) Oops: Oops
due to oops @ 0xc015c446
eax = 0x748b5356 ebx = 0xc01a1550 ecx = 0xd7894040 edx = 0x00000000
esi = 0xc7228000 edi = 0xd7894040 esp = 0xc7229eac eip = 0xc015c446
ebp = 0xd7ed4800 xss = 0x00000018 xcs = 0x00000010 eflags = 0x00010286
xds = 0x00000018 xes = 0x00000018 origeax = 0xffffffff ®s = 0xc7229e78
kdb> bt
EBP EIP Function(args)
0xd7ed4800 0xc015c446 journal_start+0x36 (0xd7ed4800, 0x1, 0x40018000,
0xc7229f5c, 0x2)
kernel .text 0xc0100000 0xc015c410 0xc015c4f0
0xc01571a8 ext3_dirty_inode+0x58 (0xd7894040)
kernel .text 0xc0100000 0xc0157150 0xc0157250
0xc0141b1e __mark_inode_dirty+0x2e (0xd7894040, 0x1)
kernel .text 0xc0100000 0xc0141af0 0xc0141b70
0xc0143001 update_atime+0x51 (0xd7894040, 0x6d6, 0x1, 0x0, 0x6d6)
kernel .text 0xc0100000 0xc0142fb0 0xc0143010
0xc01254ac do_generic_file_read+0x40c (0xd5fc7740, 0xd5fc7760,
0xc7229f5c, 0xc0125690, 0x6d6)
kernel .text 0xc0100000 0xc01250a0 0xc01254c0
0xc012576a generic_file_read+0x7a (0xd5fc7740, 0x40018000, 0x1000,
0xd5fc7760, 0x0)
kernel .text 0xc0100000 0xc01256f0 0xc0125810
0xc0130cf5 sys_read+0x95 (0x4, 0x40018000, 0x1000, 0x8086ab0,
0x40018000)
kernel .text 0xc0100000 0xc0130c60 0xc0130d30
0xc0106d1b system_call+0x33
kernel .text 0xc0100000 0xc0106ce8 0xc0106d20
kdb> btp 1435
EBP EIP Function(args)
0xc01a1550 0xc015c446 journal_start+0x36 (0xd7ed4800, 0x1, 0x40018000,
0xc7229f5c, 0x2)
kernel .text 0xc0100000 0xc015c410 0xc015c4f0
0xc01571a8 ext3_dirty_inode+0x58 (0xd7894040)
kernel .text 0xc0100000 0xc0157150 0xc0157250
0xc0141b1e __mark_inode_dirty+0x2e (0xd7894040, 0x1)
kernel .text 0xc0100000 0xc0141af0 0xc0141b70
0xc0143001 update_atime+0x51 (0xd7894040, 0x6d6, 0x1, 0x0, 0x6d6)
kernel .text 0xc0100000 0xc0142fb0 0xc0143010
0xc01254ac do_generic_file_read+0x40c (0xd5fc7740, 0xd5fc7760,
0xc7229f5c, 0xc0125690, 0x6d6)
kernel .text 0xc0100000 0xc01250a0 0xc01254c0
0xc012576a generic_file_read+0x7a (0xd5fc7740, 0x40018000, 0x1000,
0xd5fc7760, 0x0)
kernel .text 0xc0100000 0xc01256f0 0xc0125810
0xc0130cf5 sys_read+0x95 (0x4, 0x40018000, 0x1000, 0x8086ab0,
0x40018000)
kernel .text 0xc0100000 0xc0130c60 0xc0130d30
0xc0106d1b system_call+0x33
kernel .text 0xc0100000 0xc0106ce8 0xc0106d20
kdb> ps
Task Addr Pid Parent [*] cpu State Thread Command
0xd7fe2000 00000001 00000000 1 000 stop 0xd7fe2270 init
0xc163c000 00000002 00000001 1 000 stop 0xc163c270 keventd
0xc1638000 00000003 00000000 1 000 stop 0xc1638270 ksoftirqd_CPU0
0xc1636000 00000004 00000000 1 000 stop 0xc1636270 kswapd
0xc1634000 00000005 00000000 1 000 stop 0xc1634270 bdflush
0xc1632000 00000006 00000000 1 000 stop 0xc1632270 kupdated
0xd7ec4000 00000007 00000001 1 000 stop 0xd7ec4270 mdrecoveryd
0xd7eae000 00000008 00000001 1 000 stop 0xd7eae270 raid5d
0xd7b32000 00000009 00000001 1 000 stop 0xd7b32270 kjournald
0xd72a6000 00000153 00000001 1 000 stop 0xd72a6270 kjournald
0xd729c000 00000154 00000001 1 000 stop 0xd729c270 kjournald
0xd7292000 00000155 00000001 1 000 stop 0xd7292270 kjournald
0xd7174000 00000157 00000001 1 000 stop 0xd7174270 kreiserfsd
0xd70ac000 00000158 00000001 1 000 stop 0xd70ac270 kjournald
0xd6f68000 00000160 00000001 1 000 stop 0xd6f68270 pagebuf_daemon
0xd6250000 00000525 00000001 1 000 stop 0xd6250270 dhcpcd
0xd6c56000 00000661 00000001 1 000 stop 0xd6c56270 syslogd
0xd623a000 00000666 00000001 1 000 stop 0xd623a270 klogd
0xd619e000 00000686 00000001 1 000 stop 0xd619e270 portmap
0xd60ac000 00000714 00000001 1 000 stop 0xd60ac270 rpc.statd
0xd62d6000 00000827 00000001 1 000 stop 0xd62d6270 crond
more>
0xd5f3a000 00000863 00000001 1 000 stop 0xd5f3a270 atd
0xd6a80000 00000870 00000001 1 000 stop 0xd6a80270 login
0xd5f5a000 00000871 00000001 1 000 stop 0xd5f5a270 login
0xd5f56000 00000872 00000001 1 000 stop 0xd5f56270 mingetty
0xd6c9c000 00000873 00000001 1 000 stop 0xd6c9c270 mingetty
0xd5f6a000 00000874 00000001 1 000 stop 0xd5f6a270 mingetty
0xd6c9a000 00000875 00000001 1 000 stop 0xd6c9a270 mingetty
0xd6338000 00000876 00000001 1 000 stop 0xd6338270 login
0xd739c000 00000879 00000876 1 000 stop 0xd739c270 bash
0xd5d86000 00000925 00000870 1 000 stop 0xd5d86270 bash
0xd580c000 00000977 00000871 1 000 stop 0xd580c270 bash
0xc7228000 00001435 00000925 1 000 run 0xc7228270*lvcreate
kdb> id %eip
0xc015c446 journal_start+0x36: cmp %ebp,(%eax)
0xc015c448 journal_start+0x38: je 0xc015c46d journal_start+0x5d:
0xc015c44a journal_start+0x3a: push $0xc02309e0
0xc015c44f journal_start+0x3f: push $0xe1
0xc015c454 journal_start+0x44: push $0xc022becf
0xc015c459 journal_start+0x49: push $0xc022b6a0
0xc015c45e journal_start+0x4e: push $0xc022e6a0
0xc015c463 journal_start+0x53: call 0xc0115380 printk:
0xc015c468 journal_start+0x58: ud2a
0xc015c46a journal_start+0x5a: add $0x14,%esp
0xc015c46d journal_start+0x5d: incl 0x8(%ebx)
0xc015c470 journal_start+0x60: jmp 0xc015c4e0 journal_start+0xd0:
0xc015c472 journal_start+0x62: push $0x1
0xc015c474 journal_start+0x64: push $0xf0
0xc015c479 journal_start+0x69: push $0x14
0xc015c47b journal_start+0x6b: push $0xc022b6a0
kdb> go
Oops: 0000
CPU: 0
EIP: 0010:[<c015c446>] Not tainted
EFLAGS: 00010286
eax: 748b5356 ebx: c01a1550 ecx: d7894040 edx: 00000000
esi: c7228000 edi: d7894040 ebp: d7ed4800 esp: c7229eac
ds: 0018 es: 0018 ss: 0018
Process lvcreate (pid: 1435, stackpage=c7229000)
Stack: c01a1550 c01a1550 ffffffe2 d7894040 00000000 c01571a8 d7ed4800 00000001
40018000 c7229f5c 00000002 00000018 d7894040 d7b41000 00000001 c0141b1e
d7894040 3c36dd6f d5fc7760 d78940f0 c0143001 d7894040 00000001 00000000
Call Trace: [<c01a1550>] [<c01a1550>] [<c01571a8>] [<c0141b1e>] [<c0143001>]
[<c01254ac>] [<c012576a>] [<c0125690>] [<c0130cf5>] [<c0106d1b>]
Code: 39 28 74 23 68 e0 09 23 c0 68 e1 00 00 00 68 cf be 22 c0 68
On Sat, 5 Jan 2002 09:14, Eric Sandeen wrote:
> On Fri, 2002-01-04 at 16:49, Adrian Head wrote:
> > What does your backtrace look like? Its the ext3_dirt_inode in my
> > backtrace thats got me. I have compiled a kernel without ext3 so will
> > also give it a run later.
>
> No, ext3 functions do not show up for me when it oopses on snapshot
> creation:
>
> kdb> bt
> EBP EIP Function(args)
> 0xc1c2bf78 0xc013649e path_init+0x36 (0xc1c2a000)
> kernel .text 0xc0100000 0xc0136468
> 0xc013659c 0xc1c2bf90 0xc01366cf __user_walk+0x2f (0xc1c2a000, 0x804f1bc)
> kernel .text 0xc0100000 0xc01366a0
> 0xc01366f8 0xc1c2bfbc 0xc013381e sys_stat64+0x1a (0x8052474, 0xbfffe980,
> 0x40196154, 0x804f1bc, 0x3) kernel .text 0xc0100000 0xc0133804 0xc0133874
> 0xc0106c5b system_call+0x33
> kernel .text 0xc0100000 0xc0106c28
> 0xc0106c60
>
>
> It's trying to stat64 /dev/sda2, one of my lvm partitions. I dunno why
> this blows up. :/
>
> The code has some fastcalls & inlines around here, though, so this may
> not be the most accurate.
>
> Still looking...
>
> -Eric
- --
Adrian Head
(Public Key available on request.)
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