| Summary: | [ INFO: possible recursive locking detected ] 4.8.0-0.rc4.git3.1.fc26.x86_64 | ||
|---|---|---|---|
| Product: | [Fedora] Fedora | Reporter: | Christopher Meng <i> |
| Component: | kernel | Assignee: | Kernel Maintainer List <kernel-maint> |
| Status: | CLOSED EOL | QA Contact: | Fedora Extras Quality Assurance <extras-qa> |
| Severity: | unspecified | Docs Contact: | |
| Priority: | unspecified | ||
| Version: | rawhide | CC: | gansalmon, ichavero, itamar, jonathan, kernel-maint, labbott, madhu.chinakonda, mchehab |
| Target Milestone: | --- | ||
| Target Release: | --- | ||
| Hardware: | x86_64 | ||
| OS: | Unspecified | ||
| Whiteboard: | |||
| Fixed In Version: | Doc Type: | If docs needed, set a value | |
| Doc Text: | Story Points: | --- | |
| Clone Of: | Environment: | ||
| Last Closed: | 2018-04-06 18:13:40 UTC | Type: | Bug |
| Regression: | --- | Mount Type: | --- |
| Documentation: | --- | CRM: | |
| Verified Versions: | Category: | --- | |
| oVirt Team: | --- | RHEL 7.3 requirements from Atomic Host: | |
| Cloudforms Team: | --- | Target Upstream Version: | |
Doing some pruning, this bug looks to be years old. Please test on a newer kernel and reopen if the problem still exists. |
============================================= [ INFO: possible recursive locking detected ] 4.8.0-0.rc4.git3.1.fc26.x86_64 #1 Not tainted --------------------------------------------- vi/2961 is trying to acquire lock: (&ei->log_mutex){+.+...}, at: [<ffffffffc066b1d2>] btrfs_log_inode+0x162/0x1190 [btrfs] but task is already holding lock: (&ei->log_mutex){+.+...}, at: [<ffffffffc066b1d2>] btrfs_log_inode+0x162/0x1190 [btrfs] other info that might help us debug this: Possible unsafe locking scenario: CPU0 ---- lock(&ei->log_mutex); lock(&ei->log_mutex); *** DEADLOCK *** May be due to missing lock nesting notation 3 locks held by vi/2961: #0: (&sb->s_type->i_mutex_key#12){+.+.+.}, at: [<ffffffffc0639923>] btrfs_sync_file+0x163/0x4c0 [btrfs] #1: (sb_internal){.+.+.+}, at: [<ffffffffb62a76a4>] __sb_start_write+0xb4/0xf0 #2: (&ei->log_mutex){+.+...}, at: [<ffffffffc066b1d2>] btrfs_log_inode+0x162/0x1190 [btrfs] stack backtrace: CPU: 2 PID: 2961 Comm: vi Not tainted 4.8.0-0.rc4.git3.1.fc26.x86_64 #1 Hardware name: System manufacturer System Product Name/P8H77-M PRO, BIOS 9002 05/30/2014 0000000000000086 000000009ba21fe8 ffff8e7d7606b840 ffffffffb6468ba3 ffffffffb7bdeb30 ffff8e7e72090000 ffff8e7d7606b908 ffffffffb610f65e 0000000072090d50 ffffffff00000003 000000005cb9cb9e ffffffffb7509b00 Call Trace: [<ffffffffb6468ba3>] dump_stack+0x86/0xc3 [<ffffffffb610f65e>] __lock_acquire+0x78e/0x1290 [<ffffffffb6037f29>] ? sched_clock+0x9/0x10 [<ffffffffb60eaa67>] ? sched_clock_cpu+0xa7/0xc0 [<ffffffffb68f77ce>] ? mutex_unlock+0xe/0x10 [<ffffffffb61105c6>] lock_acquire+0xf6/0x1f0 [<ffffffffc066b1d2>] ? btrfs_log_inode+0x162/0x1190 [btrfs] [<ffffffffb68f6b56>] mutex_lock_nested+0x86/0x3f0 [<ffffffffc066b1d2>] ? btrfs_log_inode+0x162/0x1190 [btrfs] [<ffffffffb68f77ce>] ? mutex_unlock+0xe/0x10 [<ffffffffc066b1d2>] ? btrfs_log_inode+0x162/0x1190 [btrfs] [<ffffffffc066b1d2>] btrfs_log_inode+0x162/0x1190 [btrfs] [<ffffffffb60def29>] ? __might_sleep+0x49/0x80 [<ffffffffc066bd8b>] btrfs_log_inode+0xd1b/0x1190 [btrfs] [<ffffffffb6037f29>] ? sched_clock+0x9/0x10 [<ffffffffc066c4d0>] btrfs_log_inode_parent+0x240/0x940 [btrfs] [<ffffffffb62c0fb9>] ? dget_parent+0x99/0x2a0 [<ffffffffc066db92>] btrfs_log_dentry_safe+0x62/0x80 [btrfs] [<ffffffffc0639ad1>] btrfs_sync_file+0x311/0x4c0 [btrfs] [<ffffffffb62e200b>] vfs_fsync_range+0x4b/0xb0 [<ffffffffb610eab5>] ? trace_hardirqs_on_caller+0xf5/0x1b0 [<ffffffffb62e20cd>] do_fsync+0x3d/0x70 [<ffffffffb62e2390>] SyS_fsync+0x10/0x20 [<ffffffffb68fadfc>] entry_SYSCALL_64_fastpath+0x1f/0xbd