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Message-ID: <4EC63170.9020204@t-online.de>
Date: Fri, 18 Nov 2011 11:20:32 +0100
From: Knut Petersen <Knut_Petersen@...nline.de>
To: linux-kernel@...r.kernel.org
CC: Linus Torvalds <torvalds@...ux-foundation.org>,
Frederic Weisbecker <fweisbec@...il.com>
Subject: [BUG] 3.1.0 possible recursive locking detected
Two other locking problems:
======================
Nov 17 18:35:01 linux-iffr kernel: [10382.580318]
Nov 17 18:35:01 linux-iffr kernel: [10382.580322] =============================================
Nov 17 18:35:01 linux-iffr kernel: [10382.580359] [ INFO: possible recursive locking detected ]
Nov 17 18:35:01 linux-iffr kernel: [10382.580379] 3.1.0-main+ #26
Nov 17 18:35:01 linux-iffr kernel: [10382.580392] ---------------------------------------------
Nov 17 18:35:01 linux-iffr kernel: [10382.580411] rpm/14406 is trying to acquire lock:
Nov 17 18:35:01 linux-iffr kernel: [10382.580429] (&(&parent->list_lock)->rlock){-.-...}, at: [<c018fe75>] cache_flusharray+0x21/0x88
Nov 17 18:35:01 linux-iffr kernel: [10382.580472]
Nov 17 18:35:01 linux-iffr kernel: [10382.580474] but task is already holding lock:
Nov 17 18:35:01 linux-iffr kernel: [10382.580497] (&(&parent->list_lock)->rlock){-.-...}, at: [<c018fe75>] cache_flusharray+0x21/0x88
Nov 17 18:35:01 linux-iffr kernel: [10382.580533]
Nov 17 18:35:01 linux-iffr kernel: [10382.580535] other info that might help us debug this:
Nov 17 18:35:01 linux-iffr kernel: [10382.580559] Possible unsafe locking scenario:
Nov 17 18:35:01 linux-iffr kernel: [10382.580561]
Nov 17 18:35:01 linux-iffr kernel: [10382.580582] CPU0
Nov 17 18:35:01 linux-iffr kernel: [10382.580594] ----
Nov 17 18:35:01 linux-iffr kernel: [10382.580606] lock(&(&parent->list_lock)->rlock);
Nov 17 18:35:01 linux-iffr kernel: [10382.580628] lock(&(&parent->list_lock)->rlock);
Nov 17 18:35:01 linux-iffr kernel: [10382.580649]
Nov 17 18:35:01 linux-iffr kernel: [10382.580651] *** DEADLOCK ***
Nov 17 18:35:01 linux-iffr kernel: [10382.580653]
Nov 17 18:35:01 linux-iffr kernel: [10382.580678] May be due to missing lock nesting notation
Nov 17 18:35:01 linux-iffr kernel: [10382.580681]
Nov 17 18:35:01 linux-iffr kernel: [10382.580705] 6 locks held by rpm/14406:
Nov 17 18:35:01 linux-iffr kernel: [10382.580720] #0: (&sb->s_type->i_mutex_key#12/1){+.+.+.}, at: [<c019ae09>] lock_rename+0x20/0x8f
Nov 17 18:35:01 linux-iffr kernel: [10382.580766] #1: (&journal->j_mutex){+.+...}, at: [<c01f4e3e>] do_journal_end+0xac/0xaf3
Nov 17 18:35:01 linux-iffr kernel: [10382.580806] #2: (&journal->j_flush_mutex){+.+...}, at: [<c01f2d7c>] flush_journal_list+0x77/0x52d
Nov 17 18:35:01 linux-iffr kernel: [10382.580845] #3: (&jl->j_commit_mutex){+.+...}, at: [<c01f297f>] flush_commit_list+0xfb/0x481
Nov 17 18:35:01 linux-iffr kernel: [10382.580883] #4: (&REISERFS_SB(s)->lock){+.+.+.}, at: [<c01f85fc>] reiserfs_write_lock+0x20/0x2a
Nov 17 18:35:01 linux-iffr kernel: [10382.580921] #5: (&(&parent->list_lock)->rlock){-.-...}, at: [<c018fe75>] cache_flusharray+0x21/0x88
Nov 17 18:35:01 linux-iffr kernel: [10382.580960]
Nov 17 18:35:01 linux-iffr kernel: [10382.580962] stack backtrace:
Nov 17 18:35:01 linux-iffr kernel: [10382.580985] Pid: 14406, comm: rpm Not tainted 3.1.0-main+ #26
Nov 17 18:35:01 linux-iffr kernel: [10382.581004] Call Trace:
Nov 17 18:35:01 linux-iffr kernel: [10382.581025] [<c0434974>] ? printk+0xf/0x13
Nov 17 18:35:01 linux-iffr kernel: [10382.581050] [<c01497d4>] __lock_acquire+0x13f0/0x1472
Nov 17 18:35:01 linux-iffr kernel: [10382.581076] [<c0147c6a>] ? check_irq_usage+0x99/0xac
Nov 17 18:35:01 linux-iffr kernel: [10382.581099] [<c0146992>] ? trace_hardirqs_off+0xb/0xd
Nov 17 18:35:01 linux-iffr kernel: [10382.581122] [<c0149c32>] lock_acquire+0x47/0x5e
Nov 17 18:35:01 linux-iffr kernel: [10382.581144] [<c018fe75>] ? cache_flusharray+0x21/0x88
Nov 17 18:35:01 linux-iffr kernel: [10382.581169] [<c0436f40>] _raw_spin_lock+0x25/0x34
Nov 17 18:35:01 linux-iffr kernel: [10382.581191] [<c018fe75>] ? cache_flusharray+0x21/0x88
Nov 17 18:35:01 linux-iffr kernel: [10382.581214] [<c018fe75>] cache_flusharray+0x21/0x88
Nov 17 18:35:01 linux-iffr kernel: [10382.581237] [<c018ffb5>] kmem_cache_free+0x3a/0x66
Nov 17 18:35:01 linux-iffr kernel: [10382.581259] [<c019001f>] slab_destroy+0x3e/0x42
Nov 17 18:35:01 linux-iffr kernel: [10382.581280] [<c01900d0>] free_block+0xad/0xe6
Nov 17 18:35:01 linux-iffr kernel: [10382.581302] [<c018feb4>] cache_flusharray+0x60/0x88
Nov 17 18:35:01 linux-iffr kernel: [10382.581325] [<c018ff4f>] kfree+0x73/0x9f
Nov 17 18:35:01 linux-iffr kernel: [10382.581346] [<c01f1d1a>] cleanup_bitmap_list+0x4a/0xb1
Nov 17 18:35:01 linux-iffr kernel: [10382.581370] [<c01f2c07>] flush_commit_list+0x383/0x481
Nov 17 18:35:01 linux-iffr kernel: [10382.581405] [<c01f2ea0>] flush_journal_list+0x19b/0x52d
Nov 17 18:35:01 linux-iffr kernel: [10382.581429] [<c012de75>] ? mod_timer+0x121/0x135
Nov 17 18:35:01 linux-iffr kernel: [10382.581453] [<c01f32ee>] flush_used_journal_lists+0xbc/0xc6
Nov 17 18:35:01 linux-iffr kernel: [10382.581478] [<c01f559f>] do_journal_end+0x80d/0xaf3
Nov 17 18:35:01 linux-iffr kernel: [10382.581503] [<c01f5a56>] do_journal_begin_r+0x1d1/0x247
Nov 17 18:35:01 linux-iffr kernel: [10382.581528] [<c01f5b74>] journal_begin+0xa8/0xdb
Nov 17 18:35:01 linux-iffr kernel: [10382.581551] [<c01f07ca>] reiserfs_do_truncate+0x3c1/0x446
Nov 17 18:35:01 linux-iffr kernel: [10382.581579] [<c01f0878>] reiserfs_delete_object+0x29/0x60
Nov 17 18:35:01 linux-iffr kernel: [10382.581605] [<c01dfbd1>] reiserfs_evict_inode+0xab/0x115
Nov 17 18:35:01 linux-iffr kernel: [10382.581631] [<c01a4f27>] evict+0x85/0x126
Nov 17 18:35:01 linux-iffr kernel: [10382.581651] [<c01a5109>] iput+0x141/0x146
Nov 17 18:35:01 linux-iffr kernel: [10382.581671] [<c01a26cf>] d_kill+0xc9/0xe2
Nov 17 18:35:01 linux-iffr kernel: [10382.581691] [<c01a2e29>] dput+0x127/0x132
Nov 17 18:35:01 linux-iffr kernel: [10382.581712] [<c019e2a6>] sys_renameat+0x197/0x1dc
Nov 17 18:35:01 linux-iffr kernel: [10382.581739] [<c0196673>] ? sys_lstat64+0x22/0x28
Nov 17 18:35:01 linux-iffr kernel: [10382.581763] [<c019e2fd>] sys_rename+0x12/0x15
Nov 17 18:35:01 linux-iffr kernel: [10382.581786] [<c043b10c>] sysenter_do_call+0x12/0x32
Nov 18 11:01:53 linux-iffr avahi-daemon[630]: Found user 'avahi' (UID 103) and group 'avahi' (GID 106).
Nov 18 11:01:53 linux-iffr avahi-daemon[630]: Successfully dropped root privileges.
Nov 18 11:01:53 linux-iffr avahi-daemon[630]: avahi-daemon 0.6.30 starting up.
Nov 18 11:01:53 linux-iffr auditd[659]: Started dispatcher: /sbin/audispd pid: 661
Nov 18 11:01:54 linux-iffr auditd[659]: Init complete, auditd 2.1.1 listening for events (startup state disable)
Nov 18 11:01:54 linux-iffr audispd: priority_boost_parser called with: 4
Nov 18 11:01:54 linux-iffr audispd: max_restarts_parser called with: 10
Nov 18 11:01:54 linux-iffr audispd: No plugins found, exiting
Nov 18 11:01:54 linux-iffr kernel: [ 70.474167] ip6_tables: (C) 2000-2006 Netfilter Core Team
Nov 18 11:01:54 linux-iffr kernel: [ 70.908318] nf_conntrack version 0.5.0 (16384 buckets, 65536 max)
Nov 18 11:01:55 linux-iffr kernel: [ 71.030405]
Nov 18 11:01:55 linux-iffr kernel: [ 71.030409] =============================================
Nov 18 11:01:55 linux-iffr kernel: [ 71.032012] [ INFO: possible recursive locking detected ]
Nov 18 11:01:55 linux-iffr kernel: [ 71.032012] 3.1.0-main+ #26
Nov 18 11:01:55 linux-iffr kernel: [ 71.032012] ---------------------------------------------
Nov 18 11:01:55 linux-iffr kernel: [ 71.032012] systemd-logind/585 is trying to acquire lock:
Nov 18 11:01:55 linux-iffr kernel: [ 71.032012] (&ep->mtx){+.+.+.}, at: [<c01bc5f4>] ep_scan_ready_list+0x2d/0x151
Nov 18 11:01:55 linux-iffr kernel: [ 71.032012]
Nov 18 11:01:55 linux-iffr kernel: [ 71.032012] but task is already holding lock:
Nov 18 11:01:55 linux-iffr kernel: [ 71.032012] (&ep->mtx){+.+.+.}, at: [<c01bca67>] sys_epoll_ctl+0xfc/0x48f
Nov 18 11:01:55 linux-iffr kernel: [ 71.032012]
Nov 18 11:01:55 linux-iffr kernel: [ 71.032012] other info that might help us debug this:
Nov 18 11:01:55 linux-iffr kernel: [ 71.032012] Possible unsafe locking scenario:
Nov 18 11:01:55 linux-iffr kernel: [ 71.032012]
Nov 18 11:01:55 linux-iffr kernel: [ 71.032012] CPU0
Nov 18 11:01:55 linux-iffr kernel: [ 71.032012] ----
Nov 18 11:01:55 linux-iffr kernel: [ 71.032012] lock(&ep->mtx);
Nov 18 11:01:55 linux-iffr kernel: [ 71.032012] lock(&ep->mtx);
Nov 18 11:01:55 linux-iffr kernel: [ 71.032012]
Nov 18 11:01:55 linux-iffr kernel: [ 71.032012] *** DEADLOCK ***
Nov 18 11:01:55 linux-iffr kernel: [ 71.032012]
Nov 18 11:01:55 linux-iffr kernel: [ 71.032012] May be due to missing lock nesting notation
Nov 18 11:01:55 linux-iffr kernel: [ 71.032012]
Nov 18 11:01:55 linux-iffr kernel: [ 71.032012] 2 locks held by systemd-logind/585:
Nov 18 11:01:55 linux-iffr kernel: [ 71.032012] #0: (epmutex){+.+.+.}, at: [<c01bca25>] sys_epoll_ctl+0xba/0x48f
Nov 18 11:01:55 linux-iffr kernel: [ 71.032012] #1: (&ep->mtx){+.+.+.}, at: [<c01bca67>] sys_epoll_ctl+0xfc/0x48f
Nov 18 11:01:55 linux-iffr kernel: [ 71.032012]
Nov 18 11:01:55 linux-iffr kernel: [ 71.032012] stack backtrace:
Nov 18 11:01:55 linux-iffr kernel: [ 71.032012] Pid: 585, comm: systemd-logind Not tainted 3.1.0-main+ #26
Nov 18 11:01:55 linux-iffr kernel: [ 71.032012] Call Trace:
Nov 18 11:01:55 linux-iffr kernel: [ 71.032012] [<c0434974>] ? printk+0xf/0x13
Nov 18 11:01:55 linux-iffr kernel: [ 71.032012] [<c01497d4>] __lock_acquire+0x13f0/0x1472
Nov 18 11:01:55 linux-iffr kernel: [ 71.032012] [<c014965a>] ? __lock_acquire+0x1276/0x1472
Nov 18 11:01:55 linux-iffr kernel: [ 71.032012] [<c014965a>] ? __lock_acquire+0x1276/0x1472
Nov 18 11:01:55 linux-iffr kernel: [ 71.032012] [<c0149c32>] lock_acquire+0x47/0x5e
Nov 18 11:01:55 linux-iffr kernel: [ 71.032012] [<c01bc5f4>] ? ep_scan_ready_list+0x2d/0x151
Nov 18 11:01:55 linux-iffr kernel: [ 71.032012] [<c01bc5f4>] ? ep_scan_ready_list+0x2d/0x151
Nov 18 11:01:55 linux-iffr kernel: [ 71.032012] [<c04360ef>] mutex_lock_nested+0x35/0x26f
Nov 18 11:01:55 linux-iffr kernel: [ 71.032012] [<c01bc5f4>] ? ep_scan_ready_list+0x2d/0x151
Nov 18 11:01:55 linux-iffr kernel: [ 71.032012] [<c014a23d>] ? mark_held_locks+0xae/0xd0
Nov 18 11:01:55 linux-iffr kernel: [ 71.032012] [<c01bc5f4>] ep_scan_ready_list+0x2d/0x151
Nov 18 11:01:55 linux-iffr kernel: [ 71.032012] [<c01bc098>] ? sys_inotify_rm_watch+0x85/0x85
Nov 18 11:01:55 linux-iffr kernel: [ 71.032012] [<c01bc727>] ep_poll_readyevents_proc+0xf/0x11
Nov 18 11:01:55 linux-iffr kernel: [ 71.032012] [<c01bc3d0>] ep_call_nested.clone.0+0x71/0xab
Nov 18 11:01:55 linux-iffr kernel: [ 71.032012] [<c01bc718>] ? ep_scan_ready_list+0x151/0x151
Nov 18 11:01:55 linux-iffr kernel: [ 71.032012] [<c01bc4c1>] ep_eventpoll_poll+0x37/0x4a
Nov 18 11:01:55 linux-iffr kernel: [ 71.032012] [<c01bcb6d>] sys_epoll_ctl+0x202/0x48f
Nov 18 11:01:55 linux-iffr kernel: [ 71.032012] [<c01bc2f3>] ? ep_remove+0x8c/0x8c
Nov 18 11:01:55 linux-iffr kernel: [ 71.032012] [<c04377d5>] syscall_call+0x7/0xb
Nov 18 11:01:55 linux-iffr systemd-logind[585]: New seat seat0.
Nov 18 11:01:55 linux-iffr avahi-daemon[630]: Loading service file /etc/avahi/services/sftp-ssh.service.
Nov 18 11:01:55 linux-iffr avahi-daemon[630]: Loading service file /etc/avahi/services/ssh.service.
Nov 18 11:01:55 linux-iffr avahi-daemon[630]: Loading service file /etc/avahi/services/udisks.service.
cu,
Knut
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