On 2010-06-09 03:53, Linus Torvalds wrote:
Bug-Entry: http://bugzilla.kernel.org/show_bug.cgi?id=16129
Subject : BUG: using smp_processor_id() in preemptible [] code:
jbd2/sda2
Submitter: Jan Kreuzer kontrolla...@gmx.de
Date : 2010-06-05 06:15 (4 days old)
This seems to have been introduced by
commit 7cbaef9c83e58bbd4bdd534b09052b6c5ec457d5
Author: Ingo Molnar mi...@elte.hu
Date: Sat Nov 8 17:05:38 2008 +0100
sched: optimize sched_clock() a bit
sched_clock() uses cycles_2_ns() needlessly - which is an
irq-disabling
variant of __cycles_2_ns().
Most of the time sched_clock() is called with irqs disabled already.
The few places that call it with irqs enabled need to be updated.
Signed-off-by: Ingo Molnar mi...@elte.hu
and this seems to be one of those calling cases that need to be updated.
Ingo? The call trace is:
BUG: using smp_processor_id() in preemptible [] code:
jbd2/sda2-8/337
caller is native_sched_clock+0x3c/0x68
Pid: 337, comm: jbd2/sda2-8 Not tainted 2.6.35-rc1jan+ #4
Call Trace:
[812362c5] debug_smp_processor_id+0xc9/0xe4
[8101059d] native_sched_clock+0x3c/0x68
[8101043d] sched_clock+0x9/0xd
[81212d7a] blk_rq_init+0x97/0xa3
[81214d71] get_request+0x1c4/0x2d0
[81214ea6] get_request_wait+0x29/0x1a6
[81215537] __make_request+0x338/0x45b
[812147c2] generic_make_request+0x2bb/0x330
[81214909] submit_bio+0xd2/0xef
[811413cb] submit_bh+0xf4/0x116
[81144853] block_write_full_page_endio+0x89/0x96
[81144875] block_write_full_page+0x15/0x17
[8119b00a] ext4_writepage+0x356/0x36b
[810e1f91] __writepage+0x1a/0x39
[810e32a6] write_cache_pages+0x20d/0x346
[810e3406] generic_writepages+0x27/0x29
[811ca279] journal_submit_data_buffers+0x110/0x17d
[811ca986] jbd2_journal_commit_transaction+0x4cb/0x156d
[811d0cba] kjournald2+0x147/0x37a
(from the bugzilla thing)
This should be fixed by commit 28f4197e which was merged on friday.
Bug-Entry: http://bugzilla.kernel.org/show_bug.cgi?id=16122
Subject : 2.6.35-rc1: WARNING at fs/fs-writeback.c:1142
__mark_inode_dirty+0x103/0x170
Submitter: Larry Finger larry.fin...@lwfinger.net
Date : 2010-06-04 13:18 (5 days old)
Jens?
Looking into this one.
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Jens Axboe
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