Bug 486498
| Summary: | BUG: bad unlock balance detected | ||
|---|---|---|---|
| Product: | [Fedora] Fedora | Reporter: | Bill Nottingham <notting> |
| Component: | kernel | Assignee: | Dave Airlie <airlied> |
| Status: | CLOSED DUPLICATE | QA Contact: | Fedora Extras Quality Assurance <extras-qa> |
| Severity: | medium | Docs Contact: | |
| Priority: | low | ||
| Version: | rawhide | CC: | kernel-maint, quintela, rvokal |
| Target Milestone: | --- | ||
| Target Release: | --- | ||
| Hardware: | All | ||
| OS: | Linux | ||
| Whiteboard: | |||
| Fixed In Version: | Doc Type: | Bug Fix | |
| Doc Text: | Story Points: | --- | |
| Clone Of: | Environment: | ||
| Last Closed: | 2009-02-20 00:42:18 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: | |||
*** This bug has been marked as a duplicate of bug 485930 *** |
Description of problem: Feb 19 19:20:21 nostromo kernel: ===================================== Feb 19 19:20:21 nostromo kernel: [ BUG: bad unlock balance detected! ] Feb 19 19:20:21 nostromo kernel: ------------------------------------- Feb 19 19:20:21 nostromo kernel: Xorg/2717 is trying to release lock (&dev->struct_mutex) at: Feb 19 19:20:21 nostromo kernel: [<ffffffff8137a18a>] mutex_unlock+0x9/0xb Feb 19 19:20:21 nostromo kernel: but there are no more locks to release! Feb 19 19:20:21 nostromo kernel: Feb 19 19:20:21 nostromo kernel: other info that might help us debug this: Feb 19 19:20:21 nostromo kernel: 1 lock held by Xorg/2717: Feb 19 19:20:21 nostromo kernel: #0: (&dev->mode_config.mutex){--..}, at: [<ffffffffa001df00>] drm_mode_cursor_ioctl+0x6c/0x155 [drm] Feb 19 19:20:21 nostromo kernel: Feb 19 19:20:21 nostromo kernel: stack backtrace: Feb 19 19:20:21 nostromo kernel: Pid: 2717, comm: Xorg Not tainted 2.6.29-0.134.rc5.git2.fc11.x86_64 #1 Feb 19 19:20:21 nostromo kernel: Call Trace: Feb 19 19:20:21 nostromo kernel: [<ffffffff8137a18a>] ? mutex_unlock+0x9/0xb Feb 19 19:20:21 nostromo kernel: [<ffffffff8106d2e8>] print_unlock_inbalance_bug+0xd6/0xe1 Feb 19 19:20:21 nostromo kernel: [<ffffffff8106d3a2>] lock_release_non_nested+0xaf/0x1e9 Feb 19 19:20:21 nostromo kernel: [<ffffffff8137a610>] ? __mutex_lock_common+0x330/0x394 Feb 19 19:20:21 nostromo kernel: [<ffffffff8106b7a6>] ? trace_hardirqs_on_caller+0x12f/0x153 Feb 19 19:20:21 nostromo kernel: [<ffffffff8137a18a>] ? mutex_unlock+0x9/0xb Feb 19 19:20:21 nostromo kernel: [<ffffffff8106d639>] lock_release+0x15d/0x189 Feb 19 19:20:21 nostromo kernel: [<ffffffff8137a10d>] __mutex_unlock_slowpath+0xc2/0x136 Feb 19 19:20:21 nostromo kernel: [<ffffffff8137a18a>] mutex_unlock+0x9/0xb Feb 19 19:20:21 nostromo kernel: [<ffffffffa0054af5>] intel_crtc_cursor_set+0x239/0x279 [i915] Feb 19 19:20:21 nostromo kernel: [<ffffffff8137a18a>] ? mutex_unlock+0x9/0xb Feb 19 19:20:21 nostromo kernel: [<ffffffffa001de94>] ? drm_mode_cursor_ioctl+0x0/0x155 [drm] Feb 19 19:20:21 nostromo kernel: [<ffffffffa001df91>] drm_mode_cursor_ioctl+0xfd/0x155 [drm] Feb 19 19:20:21 nostromo kernel: [<ffffffffa0012d5f>] drm_ioctl+0x1f9/0x292 [drm] Feb 19 19:20:21 nostromo kernel: [<ffffffff810e615a>] vfs_ioctl+0x6a/0x82 Feb 19 19:20:21 nostromo kernel: [<ffffffff810e65d8>] do_vfs_ioctl+0x466/0x4a7 Feb 19 19:20:21 nostromo kernel: [<ffffffff810e666a>] sys_ioctl+0x51/0x74 Feb 19 19:20:21 nostromo kernel: [<ffffffff8101123a>] system_call_fastpath+0x16/0x1b 00:00.0 Host bridge: Intel Corporation Mobile 945GM/PM/GMS, 943/940GML and 945GT Express Memory Controller Hub (rev 03) Version-Release number of selected component (if applicable): 2.6.29-0.134.rc5.git2.fc11.x86_64