Bug 439712
| Summary: | INFO: possible circular locking dependency detected | ||
|---|---|---|---|
| Product: | [Fedora] Fedora | Reporter: | petrosyan |
| Component: | kernel | Assignee: | John W. Linville <linville> |
| Status: | CLOSED DUPLICATE | QA Contact: | Fedora Extras Quality Assurance <extras-qa> |
| Severity: | low | Docs Contact: | |
| Priority: | low | ||
| Version: | rawhide | CC: | kernel-maint |
| Target Milestone: | --- | ||
| Target Release: | --- | ||
| Hardware: | x86_64 | ||
| OS: | Linux | ||
| Whiteboard: | |||
| Fixed In Version: | Doc Type: | Bug Fix | |
| Doc Text: | Story Points: | --- | |
| Clone Of: | Environment: | ||
| Last Closed: | 2008-03-31 13:50:23 UTC | Type: | --- |
| Regression: | --- | Mount Type: | --- |
| Documentation: | --- | CRM: | |
| Verified Versions: | Category: | --- | |
| oVirt Team: | --- | RHEL 7.3 requirements from Atomic Host: | |
| Cloudforms Team: | --- | Target Upstream Version: | |
| Embargoed: | |||
Description of problem: When suspending the laptop I get the following message. ======================================================= [ INFO: possible circular locking dependency detected ] 2.6.25-0.172.rc7.git4.fc9.x86_64 #1 ------------------------------------------------------- NetworkManager/2167 is trying to acquire lock: ((name)){--..}, at: [<ffffffff81044a81>] flush_workqueue+0x0/0xa6 but task is already holding lock: (rtnl_mutex){--..}, at: [<ffffffff8122a687>] rtnetlink_rcv+0x1a/0x33 which lock already depends on the new lock. the existing dependency chain (in reverse order) is: -> #2 (rtnl_mutex){--..}: [<ffffffff81054828>] __lock_acquire+0xbd3/0xd63 [<ffffffff81054a16>] lock_acquire+0x5e/0x78 [<ffffffff812a43ec>] mutex_lock_nested+0xf7/0x295 [<ffffffff8122a66b>] rtnl_lock+0x12/0x14 [<ffffffff881296e2>] ieee80211_associated+0x1a4/0x1f4 [mac80211] [<ffffffff8812b4c4>] ieee80211_sta_work+0x170d/0x1890 [mac80211] [<ffffffff81043fe0>] run_workqueue+0xfc/0x203 [<ffffffff810441c7>] worker_thread+0xe0/0xf1 [<ffffffff8104778f>] kthread+0x49/0x76 [<ffffffff8100cf78>] child_rip+0xa/0x12 [<ffffffffffffffff>] 0xffffffffffffffff -> #1 (&ifsta->work){--..}: [<ffffffff81054828>] __lock_acquire+0xbd3/0xd63 [<ffffffff81054a16>] lock_acquire+0x5e/0x78 [<ffffffff81043fda>] run_workqueue+0xf6/0x203 [<ffffffff810441c7>] worker_thread+0xe0/0xf1 [<ffffffff8104778f>] kthread+0x49/0x76 [<ffffffff8100cf78>] child_rip+0xa/0x12 [<ffffffffffffffff>] 0xffffffffffffffff -> #0 ((name)){--..}: [<ffffffff8105472b>] __lock_acquire+0xad6/0xd63 [<ffffffff81054a16>] lock_acquire+0x5e/0x78 [<ffffffff81044adc>] flush_workqueue+0x5b/0xa6 [<ffffffff8811f702>] ieee80211_stop+0x30e/0x3f0 [mac80211] [<ffffffff81221ca1>] dev_close+0x62/0x83 [<ffffffff81221960>] dev_change_flags+0xaf/0x172 [<ffffffff8122953e>] do_setlink+0x276/0x338 [<ffffffff81229714>] rtnl_setlink+0x114/0x116 [<ffffffff8122a878>] rtnetlink_rcv_msg+0x1d8/0x1f9 [<ffffffff8123aa1e>] netlink_rcv_skb+0x3e/0xac [<ffffffff8122a696>] rtnetlink_rcv+0x29/0x33 [<ffffffff8123a471>] netlink_unicast+0x1fe/0x26b [<ffffffff8123a7a8>] netlink_sendmsg+0x2ca/0x2dd [<ffffffff812148fe>] sock_sendmsg+0xfd/0x120 [<ffffffff81214af3>] sys_sendmsg+0x1d2/0x23c [<ffffffff8100c1d0>] tracesys+0xd5/0xda [<ffffffffffffffff>] 0xffffffffffffffff other info that might help us debug this: 1 lock held by NetworkManager/2167: #0: (rtnl_mutex){--..}, at: [<ffffffff8122a687>] rtnetlink_rcv+0x1a/0x33 stack backtrace: Pid: 2167, comm: NetworkManager Not tainted 2.6.25-0.172.rc7.git4.fc9.x86_64 #1 Call Trace: [<ffffffff810539ba>] print_circular_bug_tail+0x70/0x7b [<ffffffff810537d2>] ? print_circular_bug_entry+0x48/0x4f [<ffffffff8105472b>] __lock_acquire+0xad6/0xd63 [<ffffffff81054a16>] lock_acquire+0x5e/0x78 [<ffffffff81044a81>] ? flush_workqueue+0x0/0xa6 [<ffffffff81044adc>] flush_workqueue+0x5b/0xa6 [<ffffffff8811f702>] :mac80211:ieee80211_stop+0x30e/0x3f0 [<ffffffff812a5e62>] ? _spin_unlock_bh+0x2f/0x33 [<ffffffff81221ca1>] dev_close+0x62/0x83 [<ffffffff81221960>] dev_change_flags+0xaf/0x172 [<ffffffff8122953e>] do_setlink+0x276/0x338 [<ffffffff812a5e2e>] ? _read_unlock+0x26/0x2b [<ffffffff81229714>] rtnl_setlink+0x114/0x116 [<ffffffff8122a878>] rtnetlink_rcv_msg+0x1d8/0x1f9 [<ffffffff8122a6a0>] ? rtnetlink_rcv_msg+0x0/0x1f9 [<ffffffff8123aa1e>] netlink_rcv_skb+0x3e/0xac [<ffffffff8122a696>] rtnetlink_rcv+0x29/0x33 [<ffffffff8123a471>] netlink_unicast+0x1fe/0x26b [<ffffffff8123a7a8>] netlink_sendmsg+0x2ca/0x2dd [<ffffffff812148fe>] sock_sendmsg+0xfd/0x120 [<ffffffff81214788>] ? sock_recvmsg+0x10e/0x133 [<ffffffff81047aa7>] ? autoremove_wake_function+0x0/0x38 [<ffffffff810120aa>] ? native_sched_clock+0x50/0x6d [<ffffffff810ae2e9>] ? fget_light+0xac/0xdb [<ffffffff81051b75>] ? lock_release_holdtime+0x1e/0x108 [<ffffffff81215314>] ? move_addr_to_kernel+0x40/0x49 [<ffffffff8121c666>] ? verify_iovec+0x4f/0x91 [<ffffffff81214af3>] sys_sendmsg+0x1d2/0x23c [<ffffffff81053637>] ? trace_hardirqs_on+0xf1/0x115 [<ffffffff8102fbae>] ? hrtick_set+0x8b/0xfc [<ffffffff812a38a0>] ? thread_return+0x68/0xac [<ffffffff81073dd2>] ? audit_syscall_entry+0x126/0x15a [<ffffffff810133e7>] ? syscall_trace_enter+0xb5/0xb9 [<ffffffff8100c1d0>] tracesys+0xd5/0xda Version-Release number of selected component (if applicable): kernel-2.6.25-0.172.rc7.git4.fc9.x86_64 How reproducible: sometimes, when suspending the laptop.