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SubjectLinux-2.4.5, reiserfs, Oops!
Linux 2.4.5, SMP, devfs, < 1 GB memory, compiled with gcc-2.95.3


Hi,
I have just experimented with using reiserfs; since I didn't have a
hard disc partition free I used a 250MB Zip disc instead with my USB
drive. I didn't do anything clever with parameters or anything; just
"mkreisferfs /dev/sda1", mounted it and then unmounted it again. And
the kernel oopsed on me.

The kernel log says:
May 26 20:49:53 twopit kernel: SCSI subsystem driver Revision: 1.00
May 26 20:49:53 twopit kernel: scsi: host order: usb-storage-0:ide-scsi:ppa
May 26 20:49:53 twopit kernel: Initializing USB Mass Storage driver...
May 26 20:49:53 twopit kernel: usb.c: registered new driver usb-storage
May 26 20:49:53 twopit kernel: scsi0 : SCSI emulation for USB Mass Storage devices
May 26 20:49:53 twopit kernel: Vendor: IOMEGA Model: ZIP 250 Rev: 31.G
May 26 20:49:53 twopit kernel: Type: Direct-Access ANSI SCSI revision: 02
May 26 20:49:53 twopit kernel: Detected scsi removable disk sda at scsi0, channel 0, id 0, lun 0
May 26 20:49:55 twopit kernel: SCSI device sda: 489532 512-byte hdwr sectors (251 MB)
May 26 20:49:55 twopit kernel: sda: Write Protect is off
May 26 20:49:56 twopit kernel: /dev/scsi/host0/bus0/target0/lun0: p1
May 26 20:49:56 twopit kernel: WARNING: USB Mass Storage data integrity not assured
May 26 20:49:56 twopit kernel: USB Mass Storage device found at 2
May 26 20:49:56 twopit kernel: USB Mass Storage support registered.
May 26 20:51:15 twopit kernel: reiserfs: checking transaction log (device 08:01) ...
May 26 20:52:48 twopit kernel: Using r5 hash to sort names
May 26 20:52:48 twopit kernel: ReiserFS version 3.6.25
May 26 20:58:45 twopit kernel: journal_begin called without kernel lock held
May 26 20:58:45 twopit kernel: kernel BUG at journal.c:423!
May 26 20:58:45 twopit kernel: invalid operand: 0000
May 26 20:58:45 twopit kernel: CPU: 1
May 26 20:58:45 twopit kernel: EIP: 0010:[<d299a3b0>]
May 26 20:58:45 twopit kernel: EFLAGS: 00010286
May 26 20:58:45 twopit kernel: eax: 0000001d ebx: c8f21f2c ecx: c155c000 edx: 00000001
May 26 20:58:45 twopit kernel: esi: cc4eea00 edi: c8f21f2c ebp: 0000000a esp: c8f21ec4
May 26 20:58:45 twopit kernel: ds: 0018 es: 0018 ss: 0018
May 26 20:58:45 twopit kernel: Process umount (pid: 1809, stackpage=c8f21000)
May 26 20:58:45 twopit kernel: Stack: d29a40cf d29a4264 000001a7 d299c886 d29a5281 c8f21f2c cc4eea00 d29a6100
... etc.

The translated oops looks like this:

ksymoops 2.4.1 on i686 2.4.5. Options used
-V (default)
-k /proc/ksyms (default)
-l /proc/modules (default)
-o /lib/modules/2.4.5/ (default)
-m /boot/System.map-2.4.5 (specified)

Warning (compare_maps): ksyms_base symbol __VERSIONED_SYMBOL(shmem_file_setup) not found in System.map. Ignoring ksyms_base entry
May 26 20:58:45 twopit kernel: kernel BUG at journal.c:423!
May 26 20:58:45 twopit kernel: invalid operand: 0000
May 26 20:58:45 twopit kernel: CPU: 1
May 26 20:58:45 twopit kernel: EIP: 0010:[<d299a3b0>]
Using defaults from ksymoops -t elf32-i386 -a i386
May 26 20:58:45 twopit kernel: EFLAGS: 00010286
May 26 20:58:45 twopit kernel: eax: 0000001d ebx: c8f21f2c ecx: c155c000 edx: 00000001
May 26 20:58:45 twopit kernel: esi: cc4eea00 edi: c8f21f2c ebp: 0000000a esp: c8f21ec4
May 26 20:58:45 twopit kernel: ds: 0018 es: 0018 ss: 0018
May 26 20:58:45 twopit kernel: Process umount (pid: 1809, stackpage=c8f21000)
May 26 20:58:45 twopit kernel: Stack: d29a40cf d29a4264 000001a7 d299c886 d29a5281 c8f21f2c cc4eea00 d29a6100
May 26 20:58:45 twopit kernel: cc4eea44 3b107b75 40119ca8 00000000 c9864464 ca79ebe0 4001b000 d299caaa
May 26 20:58:45 twopit kernel: c8f21f2c cc4eea00 0000000a 00000000 d298ed2c c8f21f2c cc4eea00 0000000a
May 26 20:58:45 twopit kernel: Call Trace: [<d29a40cf>] [<d29a4264>] [<d299c886>] [<d29a5281>] [<d29a6100>] [<d299caaa>] [<d298ed2c>]
May 26 20:58:45 twopit kernel: [<d29a6100>] [kill_super+132/332] [kill_super+183/332] [<d29a6138>] [__mntput+80/88] [path_release+40/48] [sys_umount+289/328] [sys_munmap+54/84]
May 26 20:58:45 twopit kernel: Code: 0f 0b 83 c4 0c c3 89 f6 31 c0 c3 90 31 c0 c3 90 56 53 31 db

>>EIP; d299a3b0 <[reiserfs]reiserfs_check_lock_depth+38/40> <=====
Trace; d29a40cf <[reiserfs].rodata.start+456f/643f>
Trace; d29a4264 <[reiserfs].rodata.start+4704/643f>
Trace; d299c886 <[reiserfs]do_journal_begin_r+26/218>
Trace; d29a5281 <[reiserfs].rodata.start+5721/643f>
Trace; d29a6100 <[reiserfs]reiserfs_sops+0/38>
Trace; d299caaa <[reiserfs]journal_begin+16/1c>
Trace; d298ed2c <[reiserfs]reiserfs_put_super+1c/e4>
Trace; d29a6100 <[reiserfs]reiserfs_sops+0/38>
Code; d299a3b0 <[reiserfs]reiserfs_check_lock_depth+38/40>
00000000 <_EIP>:
Code; d299a3b0 <[reiserfs]reiserfs_check_lock_depth+38/40> <=====
0: 0f 0b ud2a <=====
Code; d299a3b2 <[reiserfs]reiserfs_check_lock_depth+3a/40>
2: 83 c4 0c add $0xc,%esp
Code; d299a3b5 <[reiserfs]reiserfs_check_lock_depth+3d/40>
5: c3 ret
Code; d299a3b6 <[reiserfs]reiserfs_check_lock_depth+3e/40>
6: 89 f6 mov %esi,%esi
Code; d299a3b8 <[reiserfs]push_journal_writer+0/4>
8: 31 c0 xor %eax,%eax
Code; d299a3ba <[reiserfs]push_journal_writer+2/4>
a: c3 ret
Code; d299a3bb <[reiserfs]push_journal_writer+3/4>
b: 90 nop
Code; d299a3bc <[reiserfs]pop_journal_writer+0/4>
c: 31 c0 xor %eax,%eax
Code; d299a3be <[reiserfs]pop_journal_writer+2/4>
e: c3 ret
Code; d299a3bf <[reiserfs]pop_journal_writer+3/4>
f: 90 nop
Code; d299a3c0 <[reiserfs]dump_journal_writers+0/34>
10: 56 push %esi
Code; d299a3c1 <[reiserfs]dump_journal_writers+1/34>
11: 53 push %ebx
Code; d299a3c2 <[reiserfs]dump_journal_writers+2/34>
12: 31 db xor %ebx,%ebx


1 warning issued. Results may not be reliable.
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