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Date: Sun, 21 Aug 2011 20:41:12 -0700
From: "Justin P. Mattock" <justinmattock@...il.com>
To: "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: INFO: possible circular locking dependency detected 3.1.0-rc2-00190-g3210d19
yikes.. seems the latest Mainline doesnt like rhythmbox or vice versa.
[ 68.476921] =======================================================
[ 68.476926] [ INFO: possible circular locking dependency detected ]
[ 68.476929] 3.1.0-rc2-00190-g3210d19 #7
[ 68.476931] -------------------------------------------------------
[ 68.476934] rhythmbox/1597 is trying to acquire lock:
[ 68.476937] (&sb->s_type->i_mutex_key#8){+.+.+.}, at:
[<ffffffff8119702e>] ext4_evict_inode+0x76/0x33c
[ 68.476950]
[ 68.476950] but task is already holding lock:
[ 68.476953] (&mm->mmap_sem){++++++}, at: [<ffffffff810fcb08>]
sys_munmap+0x3b/0x60
[ 68.476960]
[ 68.476961] which lock already depends on the new lock.
[ 68.476962]
[ 68.476964]
[ 68.476965] the existing dependency chain (in reverse order) is:
[ 68.476968]
[ 68.476968] -> #1 (&mm->mmap_sem){++++++}:
[ 68.476973] [<ffffffff810819d0>] lock_acquire+0x106/0x15b
[ 68.476979] [<ffffffff810f5fa3>] might_fault+0x89/0xac
[ 68.476984] [<ffffffff8113716b>] filldir+0x6f/0xc7
[ 68.476990] [<ffffffff8118df2b>] call_filldir+0x96/0xbd
[ 68.476994] [<ffffffff8118e258>] ext4_readdir+0x1b4/0x515
[ 68.476998] [<ffffffff811373c0>] vfs_readdir+0x7b/0xb1
[ 68.477003] [<ffffffff811374dc>] sys_getdents+0x7e/0xce
[ 68.477007] [<ffffffff814c6042>] system_call_fastpath+0x16/0x1b
[ 68.477008]
[ 68.477008] -> #0 (&sb->s_type->i_mutex_key#8){+.+.+.}:
[ 68.477008] [<ffffffff810811fa>] __lock_acquire+0xa06/0xce3
[ 68.477008] [<ffffffff810819d0>] lock_acquire+0x106/0x15b
[ 68.477008] [<ffffffff814bd955>] __mutex_lock_common+0x61/0x380
[ 68.477008] [<ffffffff814bdd83>] mutex_lock_nested+0x40/0x45
[ 68.477008] [<ffffffff8119702e>] ext4_evict_inode+0x76/0x33c
[ 68.477008] [<ffffffff8113d249>] evict+0x99/0x153
[ 68.477008] [<ffffffff8113d494>] iput+0x191/0x19a
[ 68.477008] [<ffffffff8113a155>] dentry_kill+0x123/0x145
[ 68.477008] [<ffffffff8113a564>] dput+0xf7/0x107
[ 68.477008] [<ffffffff8112970c>] fput+0x1ce/0x1e6
[ 68.477008] [<ffffffff810fb7cf>] remove_vma+0x56/0x87
[ 68.477008] [<ffffffff810fc995>] do_munmap+0x2f2/0x30b
[ 68.477008] [<ffffffff810fcb16>] sys_munmap+0x49/0x60
[ 68.477008] [<ffffffff814c6042>] system_call_fastpath+0x16/0x1b
[ 68.477008]
[ 68.477008] other info that might help us debug this:
[ 68.477008]
[ 68.477008] Possible unsafe locking scenario:
[ 68.477008]
[ 68.477008] CPU0 CPU1
[ 68.477008] ---- ----
[ 68.477008] lock(&mm->mmap_sem);
[ 68.477008]
lock(&sb->s_type->i_mutex_key);
[ 68.477008] lock(&mm->mmap_sem);
[ 68.477008] lock(&sb->s_type->i_mutex_key);
[ 68.477008]
[ 68.477008] *** DEADLOCK ***
[ 68.477008]
[ 68.477008] 1 lock held by rhythmbox/1597:
[ 68.477008] #0: (&mm->mmap_sem){++++++}, at: [<ffffffff810fcb08>]
sys_munmap+0x3b/0x60
[ 68.477008]
[ 68.477008] stack backtrace:
[ 68.477008] Pid: 1597, comm: rhythmbox Not tainted
3.1.0-rc2-00190-g3210d19 #7
[ 68.477008] Call Trace:
[ 68.477008] [<ffffffff814b50da>] print_circular_bug+0x1f8/0x209
[ 68.477008] [<ffffffff810811fa>] __lock_acquire+0xa06/0xce3
[ 68.477008] [<ffffffff8119702e>] ? ext4_evict_inode+0x76/0x33c
[ 68.477008] [<ffffffff810819d0>] lock_acquire+0x106/0x15b
[ 68.477008] [<ffffffff8119702e>] ? ext4_evict_inode+0x76/0x33c
[ 68.477008] [<ffffffff814bd955>] __mutex_lock_common+0x61/0x380
[ 68.477008] [<ffffffff8119702e>] ? ext4_evict_inode+0x76/0x33c
[ 68.477008] [<ffffffff8113d219>] ? evict+0x69/0x153
[ 68.477008] [<ffffffff8119702e>] ? ext4_evict_inode+0x76/0x33c
[ 68.477008] [<ffffffff8113d219>] ? evict+0x69/0x153
[ 68.477008] [<ffffffff81081893>] ? lock_release+0x1a9/0x1e0
[ 68.477008] [<ffffffff814bdd83>] mutex_lock_nested+0x40/0x45
[ 68.477008] [<ffffffff8119702e>] ext4_evict_inode+0x76/0x33c
[ 68.477008] [<ffffffff8113d249>] evict+0x99/0x153
[ 68.477008] [<ffffffff8113d494>] iput+0x191/0x19a
[ 68.477008] [<ffffffff8113a155>] dentry_kill+0x123/0x145
[ 68.477008] [<ffffffff8113a564>] dput+0xf7/0x107
[ 68.477008] [<ffffffff8112970c>] fput+0x1ce/0x1e6
[ 68.477008] [<ffffffff810fb7cf>] remove_vma+0x56/0x87
[ 68.477008] [<ffffffff810fc995>] do_munmap+0x2f2/0x30b
[ 68.477008] [<ffffffff810fcb16>] sys_munmap+0x49/0x60
[ 68.477008] [<ffffffff814c6042>] system_call_fastpath+0x16/0x1b
[ 69.728185] ata1: lost interrupt (Status 0x59)
[ 69.728226] ata1: drained 8 bytes to clear DRQ
[ 69.728240] ata1.00: exception Emask 0x0 SAct 0x0 SErr 0x0 action 0x6
frozen
[ 69.728250] sr 0:0:0:0: CDB: Get event status notification: 4a 01 00
00 10 00 00 00 08 00
[ 69.728288] ata1.00: cmd a0/00:00:00:08:00/00:00:00:00:00/a0 tag 0
pio 16392 in
[ 69.728291] res 40/00:03:00:00:00/00:00:00:00:00/a0 Emask
0x4 (timeout)
[ 69.728299] ata1.00: status: { DRDY }
[ 74.738348] ata1: link is slow to respond, please be patient (ready=0)
[ 79.772091] ata1: device not ready (errno=-16), forcing hardreset
[ 79.772110] ata1: soft resetting link
[ 79.934483] ata1.00: configured for UDMA/66
[ 84.934264] ata1.00: qc timeout (cmd 0xa0)
[ 84.934276] ata1.00: TEST_UNIT_READY failed (err_mask=0x5)
[ 84.934327] ata1: soft resetting link
[ 85.094470] ata1.00: configured for UDMA/66
[ 90.094089] ata1.00: qc timeout (cmd 0xa0)
[ 90.094108] ata1.00: TEST_UNIT_READY failed (err_mask=0x5)
[ 90.094113] ata1.00: limiting speed to UDMA/66:PIO3
[ 90.094153] ata1: soft resetting link
[ 90.274440] ata1.00: configured for UDMA/66
[ 95.274071] ata1.00: qc timeout (cmd 0xa0)
[ 95.274084] ata1.00: TEST_UNIT_READY failed (err_mask=0x5)
[ 95.274091] ata1.00: disabled
[ 95.274157] ata1: soft resetting link
[ 95.425185] ata1: EH complete
full dmesg here:
http://fpaste.org/Hxog/
Justin P. Mattock
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