Attachment 154586 Details for Bug 239925 – Extract of /var/log/dmesg showing problem with device-mapper.

Extract of /var/log/dmesg showing problem with device-mapper.

f7t4-devicemapper.log (text/plain), 3.02 KB, created by Kevin Cozens on 2007-05-12 15:59:08 UTC

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Creator: Kevin Cozens

Created: 2007-05-12 15:59:08 UTC

Size: 3.02 KB

patch

obsolete

>USB Mass Storage support registered.
>usb-storage: waiting for device to settle before scanning
>usb-storage: device scan complete
>scsi 6:0:0:0: Direct-Access     Generic  USB SD Reader    1.00 PQ: 0 ANSI: 0
>scsi 6:0:0:1: Direct-Access     Generic  USB CF Reader    1.01 PQ: 0 ANSI: 0
>scsi 6:0:0:2: Direct-Access     Generic  USB SM Reader    1.02 PQ: 0 ANSI: 0
>scsi 6:0:0:3: Direct-Access     Generic  USB MS Reader    1.03 PQ: 0 ANSI: 0
>sd 6:0:0:0: Attached scsi removable disk sdc
>sd 6:0:0:1: Attached scsi removable disk sdd
>sd 6:0:0:2: Attached scsi removable disk sde
>sd 6:0:0:3: Attached scsi removable disk sdf
>device-mapper: ioctl: 4.11.0-ioctl (2006-10-12) initialised: dm-devel@redhat.com
>
>=============================================
>[ INFO: possible recursive locking detected ]
>2.6.21-1.3116.fc7 #1
>---------------------------------------------
>init/1 is trying to acquire lock:
> (&md->io_lock){----}, at: [<ffffffff880d595b>] dm_request+0x25/0x130 [dm_mod]
>
>but task is already holding lock:
> (&md->io_lock){----}, at: [<ffffffff880d595b>] dm_request+0x25/0x130 [dm_mod]
>
>other info that might help us debug this:
>1 lock held by init/1:
> #0:  (&md->io_lock){----}, at: [<ffffffff880d595b>] dm_request+0x25/0x130 [dm_mod]
>
>stack backtrace: 
>
>Call Trace:
> [<ffffffff802a2e53>] __lock_acquire+0x151/0xbd1
> [<ffffffff802a3cc9>] lock_acquire+0x4c/0x65
> [<ffffffff880d595b>] :dm_mod:dm_request+0x25/0x130
> [<ffffffff8029e88b>] down_read+0x3e/0x4a
> [<ffffffff880d595b>] :dm_mod:dm_request+0x25/0x130
> [<ffffffff8021bfcf>] generic_make_request+0x259/0x270
> [<ffffffff880d44be>] :dm_mod:__map_bio+0xc0/0x11d
> [<ffffffff880d4f7d>] :dm_mod:__split_bio+0x164/0x372
> [<ffffffff80263d40>] _spin_unlock_irq+0x2b/0x31 
> [<ffffffff802633a6>] __down_read+0x3d/0xa1
> [<ffffffff880d5a53>] :dm_mod:dm_request+0x11d/0x130
> [<ffffffff8021bfcf>] generic_make_request+0x259/0x270
> [<ffffffff802c5651>] mempool_alloc_slab+0x11/0x13
> [<ffffffff80233ffe>] submit_bio+0xcf/0xd8
> [<ffffffff8021a402>] submit_bh+0xed/0x111
> [<ffffffff802f17d3>] block_read_full_page+0x296/0x2b4
> [<ffffffff802f3b52>] blkdev_get_block+0x0/0x4d
> [<ffffffff802a287f>] trace_hardirqs_on+0x136/0x15a
> [<ffffffff80263934>] _write_unlock_irq+0x2b/0x31
> [<ffffffff802f2db0>] blkdev_readpage+0x13/0x15
> [<ffffffff802128d0>] __do_page_cache_readahead+0x197/0x212
> [<ffffffff802a29c3>] debug_check_no_locks_freed+0x120/0x12f
> [<ffffffff802f39f6>] bdev_alloc_inode+0x15/0x2a
> [<ffffffff802a287f>] trace_hardirqs_on+0x136/0x15a
> [<ffffffff802330a6>] blockable_page_cache_readahead+0x5f/0xc1 
> [<ffffffff80213a70>] page_cache_readahead+0x146/0x1bb    
> [<ffffffff8020c44c>] do_generic_mapping_read+0x157/0x48d 
> [<ffffffff8020d450>] file_read_actor+0x0/0x19d
> [<ffffffff80216817>] generic_file_aio_read+0x15a/0x19b
> [<ffffffff8020d17b>] do_sync_read+0xe2/0x126
> [<ffffffff80324a7f>] file_has_perm+0xa7/0xb6
> [<ffffffff8029c451>] autoremove_wake_function+0x0/0x38
> [<ffffffff8020b500>] vfs_read+0xcc/0x175
> [<ffffffff802114ea>] sys_read+0x47/0x6f
> [<ffffffff8025c11e>] system_call+0x7e/0x83
>
>kjournald starting.  Commit interval 5 seconds
>

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Attachments on bug 239925: 154586