From: 王志坤 <raidwang@gmail.com>
To: linux-raid <linux-raid@vger.kernel.org>,
Neil Brown <neilb@cse.unsw.edu.au>
Subject: kernel messages when "rmmod md" module
Date: Wed, 31 May 2006 17:37:44 +0800 [thread overview]
Message-ID: <200605311737409216484@gmail.com> (raw)
hi,
I build the linux-2.6.11 kernel using the default kernle config file in configs directory and just config "<M> RAID support". When i use "mdadm -S /dev/md0" to stop md, everything is ok! But when i "rmmod md", kernel prints messages as follow.
Debug: sleeping function called from invalid context at kernel/workqueue.c:264
in_atomic():1, irqs_disabled():0
[<c013bbf4>] flush_workqueue+0x1a/0x27
[<c029ec2f>] blk_cleanup_queue+0x30/0x78
[<c021eb5d>] kref_put+0x29/0x8c
[<e11e50d1>] mddev_put+0xad/0x133 [md]
[<c021df71>] kobject_put+0x1e/0x22
[<e11ec802>] md_exit+0x1ce/0x2b3 [md]
[<c014a059>] __try_stop_module+0x27/0x3e
[<c014a098>] try_stop_module+0x28/0x2d
[<c014a248>] sys_delete_module+0x13b/0x180
[<c0108ac4>] do_syscall_trace+0x10b/0x14c
[<c010384d>] syscall_call+0x7/0xb
I add some debug message in the md.c and find "md_exit" function calls "mddev_put" function. After "mddev_put" function calls "blk_put_queue(mddev->queue);", the kernel prints message as above.
I have noticed that "do_md_stop" function calls "mddev->pers->stop(mddev);", and "stop" function has called "blk_sync_queue(mddev->queue);"
Would anybody give me some suggestions? Thanks!
next reply other threads:[~2006-05-31 9:37 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2006-05-31 9:37 王志坤 [this message]
2006-06-01 2:22 ` kernel messages when "rmmod md" module Neil Brown
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