* [2.6.20] possible circular locking dependency detected
@ 2007-02-14 21:59 Folkert van Heusden
0 siblings, 0 replies; only message in thread
From: Folkert van Heusden @ 2007-02-14 21:59 UTC (permalink / raw)
To: linux-kernel
Is this of any interest?
[ 141.713801] =======================================================
[ 141.713891] [ INFO: possible circular locking dependency detected ]
[ 141.713937] 2.6.20 #2
[ 141.713980] -------------------------------------------------------
[ 141.714025] tor/5534 is trying to acquire lock:
[ 141.714070] (tty_mutex){--..}, at: [<c1205b88>] mutex_lock+0x8/0xa
[ 141.714272]
[ 141.714273] but task is already holding lock:
[ 141.714277] (&s->s_dquot.dqptr_sem){----}, at: [<c1099403>] dquot_alloc_space+0x50/0x189
[ 141.714484]
[ 141.714486] which lock already depends on the new lock.
[ 141.714488]
[ 141.714490]
[ 141.714491] the existing dependency chain (in reverse order) is:
[ 141.714690]
[ 141.714691] -> #4 (&s->s_dquot.dqptr_sem){----}:
[ 141.714696] [<c10354b8>] check_prev_add+0x154/0x206
[ 141.714706] [<c10355d4>] check_prevs_add+0x6a/0xd5
[ 141.714716] [<c1036dd2>] __lock_acquire+0x61c/0xa05
[ 141.714723] [<c1037624>] lock_acquire+0x62/0x81
[ 141.714730] [<c1032b5f>] down_read+0x2b/0x3d
[ 141.714739] [<c1099403>] dquot_alloc_space+0x50/0x189
[ 141.714746] [<c10a98e6>] ext3_new_blocks+0x44b/0x5a2
[ 141.714754] [<c10abe78>] ext3_alloc_blocks+0x40/0xdf
[ 141.714762] [<c10abf67>] ext3_alloc_branch+0x50/0x21b
[ 141.714770] [<c10ac445>] ext3_get_blocks_handle+0x1b8/0x367
[ 141.714778] [<c10ac76e>] ext3_getblk+0x97/0x228
[ 141.714786] [<c10ac919>] ext3_bread+0x1a/0x78
[ 141.714796] [<c10b1bc2>] ext3_mkdir+0xf4/0x270
[ 141.714803] [<c1072a6a>] vfs_mkdir+0xb3/0x161
[ 141.714811] [<c1072ba4>] sys_mkdirat+0x8c/0xc4
[ 141.714818] [<c1072bfc>] sys_mkdir+0x20/0x22
[ 141.714826] [<c1002f78>] syscall_call+0x7/0xb
[ 141.714836] [<ffffffff>] 0xffffffff
[ 141.714857]
[ 141.714858] -> #3 (&ei->truncate_mutex){--..}:
[ 141.714861] [<c10354b8>] check_prev_add+0x154/0x206
[ 141.714870] [<c10355d4>] check_prevs_add+0x6a/0xd5
[ 141.714880] [<c1036dd2>] __lock_acquire+0x61c/0xa05
[ 141.714887] [<c1037624>] lock_acquire+0x62/0x81
[ 141.714894] [<c1205c09>] __mutex_lock_slowpath+0x75/0x28c
[ 141.714902] [<c1205b88>] mutex_lock+0x8/0xa
[ 141.714908] [<c10ae14f>] ext3_truncate+0x170/0x468
[ 141.714919] [<c1058e72>] vmtruncate+0xa6/0x116
[ 141.714927] [<c107d587>] inode_setattr+0x145/0x16c
[ 141.714935] [<c10af071>] ext3_setattr+0x150/0x22f
[ 141.714944] [<c107d909>] notify_change+0x35b/0x392
[ 141.714952] [<c10679d2>] do_truncate+0x52/0x75
[ 141.714963] [<c1071f5e>] may_open+0x1ec/0x231
[ 141.714971] [<c107211c>] open_namei+0xda/0x59b
[ 141.714978] [<c106863a>] do_filp_open+0x2c/0x53
[ 141.714986] [<c106896f>] do_sys_open+0x52/0xd8
[ 141.714994] [<c1068a11>] sys_open+0x1c/0x1e
[ 141.715004] [<c1002f78>] syscall_call+0x7/0xb
[ 141.715010] [<ffffffff>] 0xffffffff
[ 141.715020]
[ 141.715020] -> #2 (&inode->i_alloc_sem){--..}:
[ 141.715024] [<c10354b8>] check_prev_add+0x154/0x206
[ 141.715034] [<c10355d4>] check_prevs_add+0x6a/0xd5
[ 141.715045] [<c1036dd2>] __lock_acquire+0x61c/0xa05
[ 141.715052] [<c1037624>] lock_acquire+0x62/0x81
[ 141.715058] [<c1032bf5>] down_write+0x2b/0x45
[ 141.715066] [<c107d890>] notify_change+0x2e2/0x392
[ 141.715073] [<c10679d2>] do_truncate+0x52/0x75
[ 141.715084] [<c1071f5e>] may_open+0x1ec/0x231
[ 141.715091] [<c107211c>] open_namei+0xda/0x59b
[ 141.715098] [<c106863a>] do_filp_open+0x2c/0x53
[ 141.715106] [<c106896f>] do_sys_open+0x52/0xd8
[ 141.715113] [<c1068a11>] sys_open+0x1c/0x1e
[ 141.715120] [<c1002f78>] syscall_call+0x7/0xb
[ 141.715129] [<ffffffff>] 0xffffffff
[ 141.715137]
[ 141.715138] -> #1 (&sysfs_inode_imutex_key){--..}:
[ 141.715143] [<c10354b8>] check_prev_add+0x154/0x206
[ 141.715151] [<c10355d4>] check_prevs_add+0x6a/0xd5
[ 141.715159] [<c1036dd2>] __lock_acquire+0x61c/0xa05
[ 141.715166] [<c1037624>] lock_acquire+0x62/0x81
[ 141.715173] [<c1205c09>] __mutex_lock_slowpath+0x75/0x28c
[ 141.715181] [<c1205b88>] mutex_lock+0x8/0xa
[ 141.715188] [<c10a5447>] sysfs_hash_and_remove+0x43/0x11c
[ 141.715196] [<c10a5ef7>] sysfs_remove_file+0xd/0x12
[ 141.715206] [<c114b00c>] device_remove_file+0x32/0x44
[ 141.715213] [<c114b6d9>] device_del+0x174/0x1d2
[ 141.715220] [<c114b742>] device_unregister+0xb/0x15
[ 141.715228] [<c114b93d>] device_destroy+0x8d/0x9a
[ 141.715234] [<c1137a38>] vcs_remove_sysfs+0x1c/0x38
[ 141.715244] [<c113e0d8>] con_close+0x5e/0x6b
[ 141.715251] [<c1130103>] release_dev+0x4c4/0x6ce
[ 141.715260] [<c113077b>] tty_release+0x12/0x1c
[ 141.715268] [<c106a471>] __fput+0x145/0x16e
[ 141.715276] [<c106a32a>] fput+0x19/0x1b
[ 141.715285] [<c1068a92>] filp_close+0x3c/0x75
[ 141.715292] [<c1068b34>] sys_close+0x69/0xb4
[ 141.715299] [<c1002f78>] syscall_call+0x7/0xb
[ 141.715307] [<ffffffff>] 0xffffffff
[ 141.715316]
[ 141.715317] -> #0 (tty_mutex){--..}:
[ 141.715321] [<c1035398>] check_prev_add+0x34/0x206
[ 141.715332] [<c10355d4>] check_prevs_add+0x6a/0xd5
[ 141.715340] [<c1036dd2>] __lock_acquire+0x61c/0xa05
[ 141.715347] [<c1037624>] lock_acquire+0x62/0x81
[ 141.715354] [<c1205c09>] __mutex_lock_slowpath+0x75/0x28c
[ 141.715362] [<c1205b88>] mutex_lock+0x8/0xa
[ 141.715371] [<c1098d79>] print_warning+0x8c/0x15d
[ 141.715378] [<c1099537>] dquot_alloc_space+0x184/0x189
[ 141.715387] [<c10a98e6>] ext3_new_blocks+0x44b/0x5a2
[ 141.715394] [<c10abe78>] ext3_alloc_blocks+0x40/0xdf
[ 141.715402] [<c10abf67>] ext3_alloc_branch+0x50/0x21b
[ 141.715412] [<c10ac445>] ext3_get_blocks_handle+0x1b8/0x367
[ 141.715420] [<c10ac66c>] ext3_get_block+0x78/0xe3
[ 141.715428] [<c108a239>] __block_prepare_write+0x168/0x3fd
[ 141.715437] [<c108ad10>] block_prepare_write+0x28/0x3b
[ 141.715445] [<c10acbcd>] ext3_prepare_write+0x3f/0x18d
[ 141.715455] [<c104dbe5>] generic_file_buffered_write+0x197/0x5e6
[ 141.715463] [<c104e2e2>] __generic_file_aio_write_nolock+0x2ae/0x5ad
[ 141.715472] [<c104e6ea>] generic_file_aio_write+0x58/0xc4
[ 141.715479] [<c10aa723>] ext3_file_write+0x2d/0xba
[ 141.715487] [<c1069441>] do_sync_write+0xc7/0x116
[ 141.715497] [<c1069612>] vfs_write+0x182/0x187
[ 141.715504] [<c10696b8>] sys_write+0x3d/0x64
[ 141.715512] [<c1002f78>] syscall_call+0x7/0xb
[ 141.715519] [<ffffffff>] 0xffffffff
[ 141.715527]
[ 141.715529] other info that might help us debug this:
[ 141.715531]
[ 141.715533] 3 locks held by tor/5534:
[ 141.715535] #0: (&inode->i_mutex){--..}, at: [<c1205b88>] mutex_lock+0x8/0xa
[ 141.715542] #1: (&ei->truncate_mutex){--..}, at: [<c1205b88>] mutex_lock+0x8/0xa
[ 141.715548] #2: (&s->s_dquot.dqptr_sem){----}, at: [<c1099403>] dquot_alloc_space+0x50/0x189
[ 141.715555]
[ 141.715556] stack backtrace:
[ 141.715558] [<c1003d57>] show_trace_log_lvl+0x1a/0x30
[ 141.715563] [<c1003d7f>] show_trace+0x12/0x14
[ 141.715567] [<c1003e79>] dump_stack+0x16/0x18
[ 141.715573] [<c1034d6d>] print_circular_bug_tail+0x6f/0x71
[ 141.715578] [<c1035398>] check_prev_add+0x34/0x206
[ 141.715582] [<c10355d4>] check_prevs_add+0x6a/0xd5
[ 141.715586] [<c1036dd2>] __lock_acquire+0x61c/0xa05
[ 141.715591] [<c1037624>] lock_acquire+0x62/0x81
[ 141.715595] [<c1205c09>] __mutex_lock_slowpath+0x75/0x28c
[ 141.715599] [<c1205b88>] mutex_lock+0x8/0xa
[ 141.715602] [<c1098d79>] print_warning+0x8c/0x15d
[ 141.715606] [<c1099537>] dquot_alloc_space+0x184/0x189
[ 141.715612] [<c10a98e6>] ext3_new_blocks+0x44b/0x5a2
[ 141.715616] [<c10abe78>] ext3_alloc_blocks+0x40/0xdf
[ 141.715620] [<c10abf67>] ext3_alloc_branch+0x50/0x21b
[ 141.715624] [<c10ac445>] ext3_get_blocks_handle+0x1b8/0x367
[ 141.715629] [<c10ac66c>] ext3_get_block+0x78/0xe3
[ 141.715633] [<c108a239>] __block_prepare_write+0x168/0x3fd
[ 141.715638] [<c108ad10>] block_prepare_write+0x28/0x3b
[ 141.715641] [<c10acbcd>] ext3_prepare_write+0x3f/0x18d
[ 141.715647] [<c104dbe5>] generic_file_buffered_write+0x197/0x5e6
[ 141.715654] [<c104e2e2>] __generic_file_aio_write_nolock+0x2ae/0x5ad
[ 141.715658] [<c104e6ea>] generic_file_aio_write+0x58/0xc4
[ 141.715662] [<c10aa723>] ext3_file_write+0x2d/0xba
[ 141.715666] [<c1069441>] do_sync_write+0xc7/0x116
[ 141.715671] [<c1069612>] vfs_write+0x182/0x187
[ 141.715675] [<c10696b8>] sys_write+0x3d/0x64
[ 141.715679] [<c1002f78>] syscall_call+0x7/0xb
[ 141.715682] =======================
System is a P4 with HT, 3.2GHz, 2GB ram. Filesystem is ext3.
Folkert van Heusden
www.vanheusden.com/multitail - multitail is tail on steroids. multiple
windows, filtering, coloring, anything you can think of
----------------------------------------------------------------------
Phone: +31-6-41278122, PGP-key: 1F28D8AE, www.vanheusden.com
^ permalink raw reply [flat|nested] only message in thread
only message in thread, other threads:[~2007-02-14 22:01 UTC | newest]
Thread overview: (only message) (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2007-02-14 21:59 [2.6.20] possible circular locking dependency detected Folkert van Heusden
This is an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.