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Red Hat Bugzilla – Attachment 154586 Details for
Bug 239925
device-mapper detects possible recursive locking during boot
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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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Description:
Extract of /var/log/dmesg showing problem with device-mapper.
Filename:
MIME Type:
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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bug 239925
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