I'm hitting the following WARN_ON constantly on a slow (133MHz) SMP box
with Fast SCSI for disks. Kernel is 2.6.5-rc2-mm1, i'll be trying
2.6.5-rc2-mm2 shortly. The warning crops up as early as the bootscripts.
Badness in elv_remove_request at drivers/block/elevator.c:249
Call Trace:
[<c034ab67>] elv_remove_request+0x77/0x80
[<c03a3432>] scsi_request_fn+0x432/0x4f0
[<c034aa55>] elv_next_request+0x45/0xe0
[<c034c4ac>] generic_unplug_device+0x7c/0xa0
[<c034ed8a>] blk_backing_dev_unplug+0x1a/0x1d
[<c0160dbe>] __wait_on_buffer+0xde/0xf0
[<c011d980>] autoremove_wake_function+0x0/0x40
[<c011d980>] autoremove_wake_function+0x0/0x40
[<c01daba4>] jread+0x94/0xe0
[<c01dad9f>] do_one_pass+0x4f/0x3f0
[<c011d980>] autoremove_wake_function+0x0/0x40
[<c01646e1>] submit_bh+0x71/0x160
[<c01dac89>] journal_recover+0x49/0xa0
[<c01de56d>] journal_load+0x4d/0x90
[<c01d4c2d>] ext3_load_journal+0xbd/0x1a0
[<c01d46d3>] ext3_fill_super+0x973/0xae0
[<c02d6708>] snprintf+0x18/0x20
[<c016777d>] get_sb_bdev+0xed/0x130
[<c0147325>] __kmalloc+0x85/0xa0
[<c01d546d>] ext3_get_sb+0x1d/0x21
[<c01d3d60>] ext3_fill_super+0x0/0xae0
[<c01679a5>] do_kern_mount+0x95/0x140
[<c0180ee1>] do_add_mount+0x51/0x160
[<c018124c>] do_mount+0x14c/0x1b0
[<c018107f>] copy_mount_options+0x8f/0x110
[<c01816eb>] sys_mount+0xbb/0x170
[<c0691ffd>] do_mount_root+0x1d/0xa0
[<c06920bf>] mount_block_root+0x3f/0xf0
[<c06921c1>] mount_root+0x51/0x60
[<c06921e9>] prepare_namespace+0x19/0xa0
[<c0103239>] init+0x179/0x1b0
[<c01030c0>] init+0x0/0x1b0
[<c01050f5>] kernel_thread_helper+0x5/0x10
On Wed, Mar 24 2004, Zwane Mwaikambo wrote:
> I'm hitting the following WARN_ON constantly on a slow (133MHz) SMP box
> with Fast SCSI for disks. Kernel is 2.6.5-rc2-mm1, i'll be trying
> 2.6.5-rc2-mm2 shortly. The warning crops up as early as the bootscripts.
>
> Badness in elv_remove_request at drivers/block/elevator.c:249
> Call Trace:
> [<c034ab67>] elv_remove_request+0x77/0x80
> [<c03a3432>] scsi_request_fn+0x432/0x4f0
Known bug in that kernel, just go to the next one...
--
Jens Axboe