INFO: task kworker/1:2:1534 blocked for more than 144 seconds. Not tainted 5.15.182-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:kworker/1:2 state:D stack: 0 pid: 1534 ppid: 2 flags:0x00000008 Workqueue: events_long flush_old_commits Call trace: __switch_to+0x2f4/0x558 arch/arm64/kernel/process.c:521 context_switch kernel/sched/core.c:5030 [inline] __schedule+0xe00/0x1c0c kernel/sched/core.c:6376 schedule+0x11c/0x1c8 kernel/sched/core.c:6459 schedule_preempt_disabled+0x18/0x2c kernel/sched/core.c:6518 __mutex_lock_common+0xa9c/0x1edc kernel/locking/mutex.c:669 __mutex_lock kernel/locking/mutex.c:729 [inline] mutex_lock_nested+0xac/0x11c kernel/locking/mutex.c:743 reiserfs_write_lock+0x7c/0xe8 fs/reiserfs/lock.c:27 reiserfs_sync_fs fs/reiserfs/super.c:76 [inline] flush_old_commits+0x194/0x29c fs/reiserfs/super.c:111 process_one_work+0x79c/0x1140 kernel/workqueue.c:2310 worker_thread+0x8f4/0x101c kernel/workqueue.c:2457 kthread+0x374/0x454 kernel/kthread.c:334 ret_from_fork+0x10/0x20 arch/arm64/kernel/entry.S:870 Showing all locks held in the system: 1 lock held by khungtaskd/27: #0: ffff8000143211e0 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire+0xc/0x44 include/linux/rcupdate.h:311 2 locks held by kworker/u4:3/153: 4 locks held by kworker/1:2/1534: #0: ffff0000c0021138 ((wq_completion)events_long){+.+.}-{0:0}, at: process_one_work+0x678/0x1140 kernel/workqueue.c:2283 #1: ffff8000231c7c00 ((work_completion)(&(&sbi->old_work)->work)){+.+.}-{0:0}, at: process_one_work+0x6b8/0x1140 kernel/workqueue.c:2285 #2: ffff0000e96cc0e0 (&type->s_umount_key#74){++++}-{3:3}, at: flush_old_commits+0xc8/0x29c fs/reiserfs/super.c:97 #3: ffff0000e5c7b090 (&sbi->lock){+.+.}-{3:3}, at: reiserfs_write_lock+0x7c/0xe8 fs/reiserfs/lock.c:27 2 locks held by getty/3800: #0: ffff0000d3b7b098 (&tty->ldisc_sem){++++}-{0:0}, at: ldsem_down_read+0x40/0x50 drivers/tty/tty_ldsem.c:340 #1: ffff80001b7802e8 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0x2f0/0xf6c drivers/tty/n_tty.c:2158 2 locks held by udevd/4019: #0: ffff0000cc1a2918 (&disk->open_mutex){+.+.}-{3:3}, at: blkdev_put+0xdc/0x6ac block/bdev.c:915 #1: ffff0000cc2e0468 (&lo->lo_mutex){+.+.}-{3:3}, at: __loop_clr_fd+0xa4/0x978 drivers/block/loop.c:1366 2 locks held by udevd/4150: #0: ffff0000cc1a0d18 (&disk->open_mutex){+.+.}-{3:3}, at: blkdev_put+0xdc/0x6ac block/bdev.c:915 #1: ffff0000cc215468 (&lo->lo_mutex){+.+.}-{3:3}, at: __loop_clr_fd+0xa4/0x978 drivers/block/loop.c:1366 3 locks held by kworker/u4:10/4878: 3 locks held by syz.2.160/5224: 2 locks held by syz-executor/7401: #0: ffff0000cc1a8918 (&disk->open_mutex){+.+.}-{3:3}, at: blkdev_put+0xdc/0x6ac block/bdev.c:915 #1: ffff0000cc2e3468 (&lo->lo_mutex){+.+.}-{3:3}, at: __loop_clr_fd+0xa4/0x978 drivers/block/loop.c:1366 5 locks held by syz.4.775/8764: 1 lock held by udevadm/8761: 2 locks held by syz.3.784/8763: 1 lock held by syz.3.784/8766: #0: ffff0000df5317a0 (sk_lock-AF_SMC){+.+.}-{0:0}, at: lock_sock include/net/sock.h:1694 [inline] #0: ffff0000df5317a0 (sk_lock-AF_SMC){+.+.}-{0:0}, at: smc_connect+0xc4/0x784 net/smc/af_smc.c:1309 1 lock held by syz.3.784/8767: #0: ffff0000df5317a0 (sk_lock-AF_SMC){+.+.}-{0:0}, at: lock_sock include/net/sock.h:1694 [inline] #0: ffff0000df5317a0 (sk_lock-AF_SMC){+.+.}-{0:0}, at: smc_sendmsg+0x5c/0x86c net/smc/af_smc.c:2243 3 locks held by udevadm/8765: =============================================