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Date: Tue, 14 Oct 2003 08:37:45 +0200
From: Stefano Rivoir <s.rivoir@gts.it>
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Subject: [BUG] ext3 bug
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Kernel: 2.6.0-test7-bk5

Yesterday my laptop switched off by power failure; as usual, at reboot 
ext3 performed the journal recovery correctly, but now, trying to issue 
an apt-get update gives the following report, after which the file 
system is in a read-only state (note, I've not performed a disk check 
just in case you need to test something).

kernel BUG at fs/jbd/transaction.c:1224!
invalid operand: 0000 [#1]
CPU:    0
EIP:    0060:[<c018ff40>]    Not tainted
EFLAGS: 00010282
EIP is at journal_forget+0x1e0/0x230
eax: 0000005f   ebx: c627a000   ecx: 00000001   edx: c027b7d8
esi: c5c83810   edi: c68ce1b0   ebp: c74d3f00   esp: c627bd68
ds: 007b   es: 007b   ss: 0068
Process apt-get (pid: 373, threadinfo=c627a000 task=c62fc080)
Stack: c025d200 c024f667 c025b931 000004c8 c025ba47 00000000 c5f6a400 
c5c83810
        c121d424 c0183640 c121d424 c5c83810 c5c83810 00050000 00001000 
00050000
        c5f0d208 c121d424 c5f6a400 c0185bf2 c121d424 00000000 c5f6a400 
c5c83810
Call Trace:
  [<c0183640>] ext3_forget+0xf0/0x100
  [<c0185bf2>] ext3_clear_blocks+0x112/0x160
  [<c0185cd8>] ext3_free_data+0x98/0x160
  [<c0185e86>] ext3_free_branches+0xe6/0x270
  [<c0185e86>] ext3_free_branches+0xe6/0x270
  [<c01864c5>] ext3_truncate+0x4b5/0x600
  [<c018eb4d>] journal_start+0xad/0xe0
  [<c01836a3>] start_transaction+0x23/0x60
  [<c0183848>] ext3_delete_inode+0xc8/0x120
  [<c0183780>] ext3_delete_inode+0x0/0x120
  [<c0167dba>] generic_delete_inode+0x6a/0x110
  [<c0168043>] iput+0x63/0x90
  [<c015dec0>] sys_unlink+0x110/0x140
  [<c014da01>] sys_close+0x61/0xa0
  [<c010938b>] syscall_call+0x7/0xb

Code: 0f 0b c8 04 31 b9 25 c0 e9 41 ff ff ff c7 04 24 00 d2 25 c0
  <6>note: apt-get[373] exited with preempt_count 2

Message from syslogd@nbsr at Tue Oct 14 08:25:40 2003 ...
nbsr kernel: Assertion failure in journal_forget() at 
fs/jbd/transaction.c:1224: "!jh->b_committed_data"
Segmentation fault

-- 
Stefano RIVOIR
GTS Srl