Hi,
When trying today's kernel (f74d505b58d36ceeef10e459094f0eb760681165) on
ARAnyM (emulated m68k Atari), I get
| Unable to handle kernel NULL pointer dereference at virtual address 000000b4
| Oops: 00000000
| Modules linked in:
| PC: [<000aad9e>] ext3_sync_fs+0x16/0x4a
| SR: 2304 SP: 00c09cc0 a2: 00c07a80
| d0: 00000001 d1: 00002300 d2: 00000002 d3: 00677600
| d4: 00677752 d5: 006776d2 a0: 00000000 a1: 00677600
| Process swapper (pid: 1, task=00c07a80)
| Frame format=7 eff addr=000000b4 ssw=0505 faddr=000000b4
| wb 1 stat/addr/data: 0000 00000000 00000000
| wb 2 stat/addr/data: 0000 00000000 00000000
| wb 3 stat/addr/data: 0000 000000b4 00000000
| push data: 00000000 00000000 00000000 00000000
| Stack from 00c09d28:
| 00c09d30 00677600 40000000 00c09df0 000909fe 00677600 00000001 00000001
| 00a02cd0 00000040 00000000 00000000 00000000 00677600 0022671c 00677600
| 00c09df0 00c09d7c 00677666 006776be 006776b2 00001000 00000000 00000000
| 00000000 00000001 00000000 00000000 00065b7a 00677600 ffffffff 00000000
| 00a02ce8 ffffffea 00065e5c 00677600 0067763a 0067b000 0067b000 0080de20
| 0022671c 00c09ea4 68646131 000e38de 00241072 00c01f70 000000d0 00241072
| Call Trace: [<000909fe>] vfs_quota_off+0xb4/0x562
| [<00001000>] kernel_pg_dir+0x0/0x1000
| [<00065b7a>] deactivate_super+0x44/0x72
| [<00065e5c>] get_sb_bdev+0x12a/0x138
| [<000e38de>] idr_pre_get+0x32/0x44
| [<000e37f8>] ida_get_new+0x10/0x16
| [<000a9930>] ext3_get_sb+0x1e/0x24
when mounting the root file system, which is ext2 (has_journal is not set).
Apparently it crashes in ext3_sync_fs because EXT3_SB(sb)->s_journal is NULL.
At first I thought it was an issue with the byteswapped IDE bus on Atari (a
new and different solution to handle this just went into mainline), but if I
disable CONFIG_EXT3 support, it boots up fine.
Is this a known problem?
Gr{oetje,eeting}s,
Geert
--
Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@xxxxxxxxxxxxxx
In personal conversations with technical people, I call myself a hacker. But
when I'm talking to journalists I just say "programmer" or something like that.
-- Linus Torvalds
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