INFO: task syz-executor311:4318 blocked for more than 143 seconds. Tainted: G W 6.1.121-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz-executor311 state:D stack:0 pid:4318 ppid:4315 flags:0x0000000c Call trace: __switch_to+0x308/0x598 arch/arm64/kernel/process.c:553 context_switch kernel/sched/core.c:5241 [inline] __schedule+0xef4/0x1d44 kernel/sched/core.c:6558 schedule+0xc4/0x170 kernel/sched/core.c:6634 schedule_preempt_disabled+0x18/0x2c kernel/sched/core.c:6693 __mutex_lock_common+0xbd8/0x21a0 kernel/locking/mutex.c:679 __mutex_lock kernel/locking/mutex.c:747 [inline] mutex_lock_nested+0x38/0x44 kernel/locking/mutex.c:799 lmLogClose+0xc8/0x4d8 fs/jfs/jfs_logmgr.c:1444 jfs_umount+0x24c/0x338 fs/jfs/jfs_umount.c:116 jfs_put_super+0x90/0x188 fs/jfs/super.c:194 generic_shutdown_super+0x130/0x328 fs/super.c:501 kill_block_super+0x70/0xdc fs/super.c:1470 deactivate_locked_super+0xac/0x124 fs/super.c:332 deactivate_super+0xf0/0x110 fs/super.c:363 cleanup_mnt+0x394/0x41c fs/namespace.c:1186 __cleanup_mnt+0x20/0x30 fs/namespace.c:1193 task_work_run+0x240/0x2f0 kernel/task_work.c:203 resume_user_mode_work include/linux/resume_user_mode.h:49 [inline] do_notify_resume+0x2080/0x2cb8 arch/arm64/kernel/signal.c:1132 prepare_exit_to_user_mode arch/arm64/kernel/entry-common.c:137 [inline] exit_to_user_mode arch/arm64/kernel/entry-common.c:142 [inline] el0_svc+0x9c/0x168 arch/arm64/kernel/entry-common.c:638 el0t_64_sync_handler+0x84/0xf0 arch/arm64/kernel/entry-common.c:655 el0t_64_sync+0x18c/0x190 arch/arm64/kernel/entry.S:585 INFO: task syz-executor311:4321 blocked for more than 143 seconds. Tainted: G W 6.1.121-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz-executor311 state:D stack:0 pid:4321 ppid:4315 flags:0x0000000c Call trace: __switch_to+0x308/0x598 arch/arm64/kernel/process.c:553 context_switch kernel/sched/core.c:5241 [inline] __schedule+0xef4/0x1d44 kernel/sched/core.c:6558 schedule+0xc4/0x170 kernel/sched/core.c:6634 schedule_preempt_disabled+0x18/0x2c kernel/sched/core.c:6693 __mutex_lock_common+0xbd8/0x21a0 kernel/locking/mutex.c:679 __mutex_lock kernel/locking/mutex.c:747 [inline] mutex_lock_nested+0x38/0x44 kernel/locking/mutex.c:799 lmLogClose+0xc8/0x4d8 fs/jfs/jfs_logmgr.c:1444 jfs_umount+0x24c/0x338 fs/jfs/jfs_umount.c:116 jfs_put_super+0x90/0x188 fs/jfs/super.c:194 generic_shutdown_super+0x130/0x328 fs/super.c:501 kill_block_super+0x70/0xdc fs/super.c:1470 deactivate_locked_super+0xac/0x124 fs/super.c:332 deactivate_super+0xf0/0x110 fs/super.c:363 cleanup_mnt+0x394/0x41c fs/namespace.c:1186 __cleanup_mnt+0x20/0x30 fs/namespace.c:1193 task_work_run+0x240/0x2f0 kernel/task_work.c:203 resume_user_mode_work include/linux/resume_user_mode.h:49 [inline] do_notify_resume+0x2080/0x2cb8 arch/arm64/kernel/signal.c:1132 prepare_exit_to_user_mode arch/arm64/kernel/entry-common.c:137 [inline] exit_to_user_mode arch/arm64/kernel/entry-common.c:142 [inline] el0_svc+0x9c/0x168 arch/arm64/kernel/entry-common.c:638 el0t_64_sync_handler+0x84/0xf0 arch/arm64/kernel/entry-common.c:655 el0t_64_sync+0x18c/0x190 arch/arm64/kernel/entry.S:585 Showing all locks held in the system: 1 lock held by rcu_tasks_kthre/12: #0: ffff800015c65570 (rcu_tasks.tasks_gp_mutex){+.+.}-{3:3}, at: rcu_tasks_one_gp+0x44/0xd10 kernel/rcu/tasks.h:543 1 lock held by rcu_tasks_trace/13: #0: ffff800015c65d90 (rcu_tasks_trace.tasks_gp_mutex){+.+.}-{3:3}, at: rcu_tasks_one_gp+0x44/0xd10 kernel/rcu/tasks.h:543 1 lock held by khungtaskd/28: #0: ffff800015c653a0 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire+0xc/0x44 include/linux/rcupdate.h:349 2 locks held by getty/4055: #0: ffff0000d6341098 (&tty->ldisc_sem){++++}-{0:0}, at: ldsem_down_read+0x3c/0x4c drivers/tty/tty_ldsem.c:340 #1: ffff80001d8302f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0x414/0x1214 drivers/tty/n_tty.c:2198 1 lock held by syz-executor311/4317: #0: ffff0000dc7de0e0 (&type->s_umount_key#40){+.+.}-{3:3}, at: deactivate_super+0xe8/0x110 fs/super.c:362 2 locks held by syz-executor311/4318: #0: ffff0000dace20e0 (&type->s_umount_key#40){+.+.}-{3:3}, at: deactivate_super+0xe8/0x110 fs/super.c:362 #1: ffff800016044148 (jfs_log_mutex){+.+.}-{3:3}, at: lmLogClose+0xc8/0x4d8 fs/jfs/jfs_logmgr.c:1444 2 locks held by syz-executor311/4319: #0: ffff0000db0e20e0 (&type->s_umount_key#40){+.+.}-{3:3}, at: deactivate_super+0xe8/0x110 fs/super.c:362 #1: ffff800016044148 (jfs_log_mutex){+.+.}-{3:3}, at: lmLogClose+0xc8/0x4d8 fs/jfs/jfs_logmgr.c:1444 2 locks held by syz-executor311/4320: #0: ffff0000dbfba0e0 (&type->s_umount_key#40){+.+.}-{3:3}, at: deactivate_super+0xe8/0x110 fs/super.c:362 #1: ffff800016044148 (jfs_log_mutex){+.+.}-{3:3}, at: lmLogClose+0xc8/0x4d8 fs/jfs/jfs_logmgr.c:1444 2 locks held by syz-executor311/4321: #0: ffff0000db13a0e0 (&type->s_umount_key#40){+.+.}-{3:3}, at: deactivate_super+0xe8/0x110 fs/super.c:362 #1: ffff800016044148 (jfs_log_mutex){+.+.}-{3:3}, at: lmLogClose+0xc8/0x4d8 fs/jfs/jfs_logmgr.c:1444 =============================================