====================================================== WARNING: possible circular locking dependency detected 6.15.0-rc4-syzkaller-00291-g2a239ffbebb5 #0 Not tainted ------------------------------------------------------ kworker/u8:0/12 is trying to acquire lock: ffff8880778c5100 (&ocfs2_sysfile_lock_key[args->fi_sysfile_type]#5){+.+.}-{4:4}, at: inode_lock include/linux/fs.h:867 [inline] ffff8880778c5100 (&ocfs2_sysfile_lock_key[args->fi_sysfile_type]#5){+.+.}-{4:4}, at: __ocfs2_flush_truncate_log+0x33c/0x10e0 fs/ocfs2/alloc.c:6054 but task is already holding lock: ffff88805f01b480 (&ocfs2_sysfile_lock_key[args->fi_sysfile_type]#6){+.+.}-{4:4}, at: inode_lock include/linux/fs.h:867 [inline] ffff88805f01b480 (&ocfs2_sysfile_lock_key[args->fi_sysfile_type]#6){+.+.}-{4:4}, at: ocfs2_flush_truncate_log fs/ocfs2/alloc.c:6083 [inline] ffff88805f01b480 (&ocfs2_sysfile_lock_key[args->fi_sysfile_type]#6){+.+.}-{4:4}, at: ocfs2_truncate_log_worker+0x9a/0x190 fs/ocfs2/alloc.c:6097 which lock already depends on the new lock. the existing dependency chain (in reverse order) is: -> #1 (&ocfs2_sysfile_lock_key[args->fi_sysfile_type]#6){+.+.}-{4:4}: lock_acquire+0x120/0x360 kernel/locking/lockdep.c:5866 down_write+0x96/0x1f0 kernel/locking/rwsem.c:1577 inode_lock include/linux/fs.h:867 [inline] ocfs2_move_extent fs/ocfs2/move_extents.c:640 [inline] __ocfs2_move_extents_range+0x1a68/0x3370 fs/ocfs2/move_extents.c:860 ocfs2_move_extents+0x378/0x960 fs/ocfs2/move_extents.c:927 ocfs2_ioctl_move_extents+0x53e/0x710 fs/ocfs2/move_extents.c:1053 ocfs2_ioctl+0x191/0x750 fs/ocfs2/ioctl.c:946 vfs_ioctl fs/ioctl.c:51 [inline] __do_sys_ioctl fs/ioctl.c:906 [inline] __se_sys_ioctl+0xfc/0x170 fs/ioctl.c:892 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0xf6/0x210 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f -> #0 (&ocfs2_sysfile_lock_key[args->fi_sysfile_type]#5){+.+.}-{4:4}: check_prev_add kernel/locking/lockdep.c:3166 [inline] check_prevs_add kernel/locking/lockdep.c:3285 [inline] validate_chain+0xb9b/0x2140 kernel/locking/lockdep.c:3909 __lock_acquire+0xaac/0xd20 kernel/locking/lockdep.c:5235 lock_acquire+0x120/0x360 kernel/locking/lockdep.c:5866 down_write+0x96/0x1f0 kernel/locking/rwsem.c:1577 inode_lock include/linux/fs.h:867 [inline] __ocfs2_flush_truncate_log+0x33c/0x10e0 fs/ocfs2/alloc.c:6054 ocfs2_flush_truncate_log fs/ocfs2/alloc.c:6084 [inline] ocfs2_truncate_log_worker+0xa2/0x190 fs/ocfs2/alloc.c:6097 process_one_work kernel/workqueue.c:3238 [inline] process_scheduled_works+0xade/0x17a0 kernel/workqueue.c:3319 worker_thread+0x8a0/0xda0 kernel/workqueue.c:3400 kthread+0x711/0x8a0 kernel/kthread.c:464 ret_from_fork+0x4e/0x80 arch/x86/kernel/process.c:153 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245 other info that might help us debug this: Possible unsafe locking scenario: CPU0 CPU1 ---- ---- lock(&ocfs2_sysfile_lock_key[args->fi_sysfile_type]#6); lock(&ocfs2_sysfile_lock_key[args->fi_sysfile_type]#5); lock(&ocfs2_sysfile_lock_key[args->fi_sysfile_type] #6 ); lock(&ocfs2_sysfile_lock_key[args->fi_sysfile_type]#5); *** DEADLOCK *** 3 locks held by kworker/u8:0/12: #0: ffff888056865948 ((wq_completion)ocfs2_wq){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3213 [inline] #0: ffff888056865948 ((wq_completion)ocfs2_wq){+.+.}-{0:0}, at: process_scheduled_works+0x9b1/0x17a0 kernel/workqueue.c:3319 #1: ffffc90000117c60 ((work_completion)(&(&osb->osb_truncate_log_wq)->work)){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3214 [inline] #1: ffffc90000117c60 ((work_completion)(&(&osb->osb_truncate_log_wq)->work)){+.+.}-{0:0}, at: process_scheduled_works+0x9ec/0x17a0 kernel/workqueue.c:3319 #2: ffff88805f01b480 (&ocfs2_sysfile_lock_key[args->fi_sysfile_type]#6){+.+.}-{4:4}, at: inode_lock include/linux/fs.h:867 [inline] #2: ffff88805f01b480 (&ocfs2_sysfile_lock_key[args->fi_sysfile_type]#6){+.+.}-{4:4}, at: ocfs2_flush_truncate_log fs/ocfs2/alloc.c:6083 [inline] #2: ffff88805f01b480 (&ocfs2_sysfile_lock_key[args->fi_sysfile_type]#6){+.+.}-{4:4}, at: ocfs2_truncate_log_worker+0x9a/0x190 fs/ocfs2/alloc.c:6097 stack backtrace: CPU: 1 UID: 0 PID: 12 Comm: kworker/u8:0 Not tainted 6.15.0-rc4-syzkaller-00291-g2a239ffbebb5 #0 PREEMPT(full) Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/29/2025 Workqueue: ocfs2_wq ocfs2_truncate_log_worker Call Trace: dump_stack_lvl+0x189/0x250 lib/dump_stack.c:120 print_circular_bug+0x2ee/0x310 kernel/locking/lockdep.c:2079 check_noncircular+0x134/0x160 kernel/locking/lockdep.c:2211 check_prev_add kernel/locking/lockdep.c:3166 [inline] check_prevs_add kernel/locking/lockdep.c:3285 [inline] validate_chain+0xb9b/0x2140 kernel/locking/lockdep.c:3909 __lock_acquire+0xaac/0xd20 kernel/locking/lockdep.c:5235 lock_acquire+0x120/0x360 kernel/locking/lockdep.c:5866 down_write+0x96/0x1f0 kernel/locking/rwsem.c:1577 inode_lock include/linux/fs.h:867 [inline] __ocfs2_flush_truncate_log+0x33c/0x10e0 fs/ocfs2/alloc.c:6054 ocfs2_flush_truncate_log fs/ocfs2/alloc.c:6084 [inline] ocfs2_truncate_log_worker+0xa2/0x190 fs/ocfs2/alloc.c:6097 process_one_work kernel/workqueue.c:3238 [inline] process_scheduled_works+0xade/0x17a0 kernel/workqueue.c:3319 worker_thread+0x8a0/0xda0 kernel/workqueue.c:3400 kthread+0x711/0x8a0 kernel/kthread.c:464 ret_from_fork+0x4e/0x80 arch/x86/kernel/process.c:153 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245 wlan0: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 wlan0: Creating new IBSS network, BSSID 50:50:50:50:50:50 wlan1: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 wlan1: Creating new IBSS network, BSSID 50:50:50:50:50:50