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===================================== WARNING: bad unlock balance detected! 5.15.176-syzkaller #0 Not tainted ------------------------------------- kworker/u4:12/6133 is trying to release lock (&jfs_ip->commit_mutex) at: [<ffff80000991ed60>] jfs_commit_inode+0x2d4/0x4f8 fs/jfs/inode.c:111 but there are no more locks to release! other info that might help us debug this: 2 locks held by kworker/u4:12/6133: #0: ffff0000c21d8138 ((wq_completion)writeback){+.+.}-{0:0}, at: process_one_work+0x66c/0x11b8 kernel/workqueue.c:2283 #1: ffff800021247c00 ((work_completion)(&(&wb->dwork)->work)){+.+.}-{0:0}, at: process_one_work+0x6ac/0x11b8 kernel/workqueue.c:2285 stack backtrace: CPU: 1 PID: 6133 Comm: kworker/u4:12 Not tainted 5.15.176-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 12/27/2024 Workqueue: writeback wb_workfn (flush-7:4) Call trace: dump_backtrace+0x0/0x530 arch/arm64/kernel/stacktrace.c:152 show_stack+0x2c/0x3c arch/arm64/kernel/stacktrace.c:216 __dump_stack lib/dump_stack.c:88 [inline] dump_stack_lvl+0x108/0x170 lib/dump_stack.c:106 dump_stack+0x1c/0x58 lib/dump_stack.c:113 print_unlock_imbalance_bug+0x250/0x2a4 kernel/locking/lockdep.c:5065 lock_release+0x4b8/0xa1c kernel/locking/lockdep.c:5643 __mutex_unlock_slowpath+0xe0/0x6d4 kernel/locking/mutex.c:851 mutex_unlock+0x8c/0xe0 kernel/locking/mutex.c:536 jfs_commit_inode+0x2d4/0x4f8 fs/jfs/inode.c:111 jfs_write_inode+0x128/0x200 fs/jfs/inode.c:132 write_inode fs/fs-writeback.c:1495 [inline] __writeback_single_inode+0x584/0x13a4 fs/fs-writeback.c:1705 writeback_sb_inodes+0x94c/0x1654 fs/fs-writeback.c:1930 wb_writeback+0x3fc/0xfc8 fs/fs-writeback.c:2104 wb_do_writeback fs/fs-writeback.c:2247 [inline] wb_workfn+0x3a4/0x1070 fs/fs-writeback.c:2288 process_one_work+0x790/0x11b8 kernel/workqueue.c:2310 worker_thread+0x910/0x1034 kernel/workqueue.c:2457 kthread+0x37c/0x45c kernel/kthread.c:334 ret_from_fork+0x10/0x20 arch/arm64/kernel/entry.S:870
Time | Kernel | Commit | Syzkaller | Config | Log | Report | Syz repro | C repro | VM info | Assets (help?) | Manager | Title |
---|---|---|---|---|---|---|---|---|---|---|---|---|
2025/01/19 07:45 | linux-5.15.y | 4735586da88e | f2cb035c | .config | console log | report | info | [disk image] [vmlinux] [kernel image] | ci2-linux-5-15-kasan-arm64 | WARNING: bad unlock balance in jfs_commit_inode |