INFO: task syz-executor:4762 blocked for more than 143 seconds. Not tainted 5.15.181-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz-executor state:D stack: 0 pid: 4762 ppid: 1 flags:0x00000009 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 lmLogClose+0xb0/0x4c8 fs/jfs/jfs_logmgr.c:1452 jfs_umount+0x244/0x328 fs/jfs/jfs_umount.c:116 jfs_put_super+0x90/0x188 fs/jfs/super.c:194 generic_shutdown_super+0x130/0x2f0 fs/super.c:475 kill_block_super+0x70/0xdc fs/super.c:1427 deactivate_locked_super+0xb8/0x13c fs/super.c:335 deactivate_super+0xf8/0x118 fs/super.c:366 cleanup_mnt+0x3a4/0x458 fs/namespace.c:1143 __cleanup_mnt+0x20/0x30 fs/namespace.c:1150 task_work_run+0x12c/0x1e0 kernel/task_work.c:188 tracehook_notify_resume include/linux/tracehook.h:189 [inline] do_notify_resume+0x24b4/0x3128 arch/arm64/kernel/signal.c:949 prepare_exit_to_user_mode arch/arm64/kernel/entry-common.c:133 [inline] exit_to_user_mode arch/arm64/kernel/entry-common.c:138 [inline] el0_svc+0xf0/0x1e0 arch/arm64/kernel/entry-common.c:609 el0t_64_sync_handler+0xcc/0xe4 arch/arm64/kernel/entry-common.c:626 el0t_64_sync+0x1a0/0x1a4 arch/arm64/kernel/entry.S:584 INFO: task syz-executor:4772 blocked for more than 143 seconds. Not tainted 5.15.181-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz-executor state:D stack: 0 pid: 4772 ppid: 1 flags:0x00000009 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 lmLogClose+0xb0/0x4c8 fs/jfs/jfs_logmgr.c:1452 jfs_umount+0x244/0x328 fs/jfs/jfs_umount.c:116 jfs_put_super+0x90/0x188 fs/jfs/super.c:194 generic_shutdown_super+0x130/0x2f0 fs/super.c:475 kill_block_super+0x70/0xdc fs/super.c:1427 deactivate_locked_super+0xb8/0x13c fs/super.c:335 deactivate_super+0xf8/0x118 fs/super.c:366 cleanup_mnt+0x3a4/0x458 fs/namespace.c:1143 __cleanup_mnt+0x20/0x30 fs/namespace.c:1150 task_work_run+0x12c/0x1e0 kernel/task_work.c:188 tracehook_notify_resume include/linux/tracehook.h:189 [inline] do_notify_resume+0x24b4/0x3128 arch/arm64/kernel/signal.c:949 prepare_exit_to_user_mode arch/arm64/kernel/entry-common.c:133 [inline] exit_to_user_mode arch/arm64/kernel/entry-common.c:138 [inline] el0_svc+0xf0/0x1e0 arch/arm64/kernel/entry-common.c:609 el0t_64_sync_handler+0xcc/0xe4 arch/arm64/kernel/entry-common.c:626 el0t_64_sync+0x1a0/0x1a4 arch/arm64/kernel/entry.S:584 Showing all locks held in the system: 3 locks held by kworker/u4:0/9: 1 lock held by khungtaskd/27: #0: ffff8000143211e0 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire+0xc/0x44 include/linux/rcupdate.h:311 1 lock held by udevd/3643: 2 locks held by getty/3780: #0: ffff0000d33a1098 (&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 syz-executor/4762: #0: ffff0000d86300e0 (&type->s_umount_key#52){+.+.}-{3:3}, at: deactivate_super+0xf0/0x118 fs/super.c:365 #1: ffff8000146b9d48 (jfs_log_mutex){+.+.}-{3:3}, at: lmLogClose+0xb0/0x4c8 fs/jfs/jfs_logmgr.c:1452 2 locks held by syz-executor/4772: #0: ffff0000d9b9e0e0 (&type->s_umount_key#52){+.+.}-{3:3}, at: deactivate_super+0xf0/0x118 fs/super.c:365 #1: ffff8000146b9d48 (jfs_log_mutex){+.+.}-{3:3}, at: lmLogClose+0xb0/0x4c8 fs/jfs/jfs_logmgr.c:1452 2 locks held by syz-executor/4773: #0: ffff0000f0a0c0e0 (&type->s_umount_key#52){+.+.}-{3:3}, at: deactivate_super+0xf0/0x118 fs/super.c:365 #1: ffff8000146b9d48 (jfs_log_mutex){+.+.}-{3:3}, at: lmLogClose+0xb0/0x4c8 fs/jfs/jfs_logmgr.c:1452 2 locks held by syz-executor/5499: #0: ffff0000dba420e0 (&type->s_umount_key#52){+.+.}-{3:3}, at: deactivate_super+0xf0/0x118 fs/super.c:365 #1: ffff8000146b9d48 (jfs_log_mutex){+.+.}-{3:3}, at: lmLogClose+0xb0/0x4c8 fs/jfs/jfs_logmgr.c:1452 2 locks held by syz-executor/5505: #0: ffff0000ee8ec0e0 (&type->s_umount_key#52){+.+.}-{3:3}, at: deactivate_super+0xf0/0x118 fs/super.c:365 #1: ffff8000146b9d48 (jfs_log_mutex){+.+.}-{3:3}, at: lmLogClose+0xb0/0x4c8 fs/jfs/jfs_logmgr.c:1452 2 locks held by syz-executor/5551: #0: ffff0000ef5b60e0 (&type->s_umount_key#52){+.+.}-{3:3}, at: deactivate_super+0xf0/0x118 fs/super.c:365 #1: ffff8000146b9d48 (jfs_log_mutex){+.+.}-{3:3}, at: lmLogClose+0xb0/0x4c8 fs/jfs/jfs_logmgr.c:1452 2 locks held by syz-executor/5553: #0: ffff0000d66080e0 (&type->s_umount_key#52){+.+.}-{3:3}, at: deactivate_super+0xf0/0x118 fs/super.c:365 #1: ffff8000146b9d48 (jfs_log_mutex){+.+.}-{3:3}, at: lmLogClose+0xb0/0x4c8 fs/jfs/jfs_logmgr.c:1452 2 locks held by syz-executor/5554: #0: ffff0000d5fae0e0 (&type->s_umount_key#52){+.+.}-{3:3}, at: deactivate_super+0xf0/0x118 fs/super.c:365 #1: ffff8000146b9d48 (jfs_log_mutex){+.+.}-{3:3}, at: lmLogClose+0xb0/0x4c8 fs/jfs/jfs_logmgr.c:1452 1 lock held by syz-executor/5623: #0: ffff0000cefba0e0 (&type->s_umount_key#52){+.+.}-{3:3}, at: deactivate_super+0xf0/0x118 fs/super.c:365 2 locks held by syz-executor/5626: #0: ffff0000d24cc0e0 (&type->s_umount_key#52){+.+.}-{3:3}, at: deactivate_super+0xf0/0x118 fs/super.c:365 #1: ffff8000146b9d48 (jfs_log_mutex){+.+.}-{3:3}, at: lmLogClose+0xb0/0x4c8 fs/jfs/jfs_logmgr.c:1452 2 locks held by udevd/5749: 1 lock held by syz.4.844/7359: 2 locks held by syz.3.846/7362: 1 lock held by syz.0.845/7363: 2 locks held by syz.6.847/7365: 1 lock held by syz.5.848/7367: =============================================