INFO: task syz-executor:6562 blocked for more than 143 seconds. Not tainted 6.12.0-syzkaller-00971-g158f238aa69d #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz-executor state:D stack:0 pid:6562 tgid:6562 ppid:1 flags:0x0000000d Call trace: __switch_to+0x414/0x788 arch/arm64/kernel/process.c:701 (T) context_switch kernel/sched/core.c:5328 [inline] __schedule+0x16c8/0x27b8 kernel/sched/core.c:6693 __schedule_loop kernel/sched/core.c:6770 [inline] schedule+0xbc/0x238 kernel/sched/core.c:6785 schedule_preempt_disabled+0x18/0x2c kernel/sched/core.c:6842 __mutex_lock_common+0xbd8/0x21a0 kernel/locking/mutex.c:684 __mutex_lock kernel/locking/mutex.c:752 [inline] mutex_lock_nested+0x2c/0x38 kernel/locking/mutex.c:804 lmLogClose+0xc8/0x4d4 fs/jfs/jfs_logmgr.c:1444 jfs_umount+0x274/0x360 fs/jfs/jfs_umount.c:114 jfs_put_super+0x90/0x188 fs/jfs/super.c:194 generic_shutdown_super+0x12c/0x2bc fs/super.c:642 kill_block_super+0x44/0x90 fs/super.c:1710 deactivate_locked_super+0xc4/0x12c fs/super.c:473 deactivate_super+0xe0/0x100 fs/super.c:506 cleanup_mnt+0x34c/0x3dc fs/namespace.c:1373 __cleanup_mnt+0x20/0x30 fs/namespace.c:1380 task_work_run+0x230/0x2e0 kernel/task_work.c:239 resume_user_mode_work include/linux/resume_user_mode.h:50 [inline] do_notify_resume+0x178/0x1f4 arch/arm64/kernel/entry-common.c:151 exit_to_user_mode_prepare arch/arm64/kernel/entry-common.c:169 [inline] exit_to_user_mode arch/arm64/kernel/entry-common.c:178 [inline] el0_svc+0xac/0x168 arch/arm64/kernel/entry-common.c:745 el0t_64_sync_handler+0x84/0x108 arch/arm64/kernel/entry-common.c:762 el0t_64_sync+0x198/0x19c arch/arm64/kernel/entry.S:600 Showing all locks held in the system: 1 lock held by khungtaskd/31: #0: ffff80008dccd920 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire+0xc/0x44 include/linux/rcupdate.h:336 2 locks held by getty/5386: #0: ffff0000d4ae00a0 (&tty->ldisc_sem){++++}-{0:0}, at: ldsem_down_read+0x3c/0x4c drivers/tty/tty_ldsem.c:340 #1: ffff800098fde2f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0x41c/0x1228 drivers/tty/n_tty.c:2211 2 locks held by syz-executor/6536: #0: ffff0000d5a1c0e0 (&type->s_umount_key#51){+.+.}-{3:3}, at: __super_lock fs/super.c:56 [inline] #0: ffff0000d5a1c0e0 (&type->s_umount_key#51){+.+.}-{3:3}, at: __super_lock_excl fs/super.c:71 [inline] #0: ffff0000d5a1c0e0 (&type->s_umount_key#51){+.+.}-{3:3}, at: deactivate_super+0xd8/0x100 fs/super.c:505 #1: ffff80008e0d89c8 (jfs_log_mutex){+.+.}-{3:3}, at: lmLogClose+0xc8/0x4d4 fs/jfs/jfs_logmgr.c:1444 2 locks held by syz-executor/6562: #0: ffff0000cbfd40e0 (&type->s_umount_key#51){+.+.}-{3:3}, at: __super_lock fs/super.c:56 [inline] #0: ffff0000cbfd40e0 (&type->s_umount_key#51){+.+.}-{3:3}, at: __super_lock_excl fs/super.c:71 [inline] #0: ffff0000cbfd40e0 (&type->s_umount_key#51){+.+.}-{3:3}, at: deactivate_super+0xd8/0x100 fs/super.c:505 #1: ffff80008e0d89c8 (jfs_log_mutex){+.+.}-{3:3}, at: lmLogClose+0xc8/0x4d4 fs/jfs/jfs_logmgr.c:1444 2 locks held by syz-executor/6588: #0: ffff0000e99e00e0 (&type->s_umount_key#51){+.+.}-{3:3}, at: __super_lock fs/super.c:56 [inline] #0: ffff0000e99e00e0 (&type->s_umount_key#51){+.+.}-{3:3}, at: __super_lock_excl fs/super.c:71 [inline] #0: ffff0000e99e00e0 (&type->s_umount_key#51){+.+.}-{3:3}, at: deactivate_super+0xd8/0x100 fs/super.c:505 #1: ffff80008e0d89c8 (jfs_log_mutex){+.+.}-{3:3}, at: lmLogClose+0xc8/0x4d4 fs/jfs/jfs_logmgr.c:1444 2 locks held by syz-executor/6681: #0: ffff0000f05ca0e0 (&type->s_umount_key#51){+.+.}-{3:3}, at: __super_lock fs/super.c:56 [inline] #0: ffff0000f05ca0e0 (&type->s_umount_key#51){+.+.}-{3:3}, at: __super_lock_excl fs/super.c:71 [inline] #0: ffff0000f05ca0e0 (&type->s_umount_key#51){+.+.}-{3:3}, at: deactivate_super+0xd8/0x100 fs/super.c:505 #1: ffff80008e0d89c8 (jfs_log_mutex){+.+.}-{3:3}, at: lmLogClose+0xc8/0x4d4 fs/jfs/jfs_logmgr.c:1444 2 locks held by syz-executor/6906: #0: ffff0000f483e0e0 (&type->s_umount_key#51){+.+.}-{3:3}, at: __super_lock fs/super.c:56 [inline] #0: ffff0000f483e0e0 (&type->s_umount_key#51){+.+.}-{3:3}, at: __super_lock_excl fs/super.c:71 [inline] #0: ffff0000f483e0e0 (&type->s_umount_key#51){+.+.}-{3:3}, at: deactivate_super+0xd8/0x100 fs/super.c:505 #1: ffff80008e0d89c8 (jfs_log_mutex){+.+.}-{3:3}, at: lmLogClose+0xc8/0x4d4 fs/jfs/jfs_logmgr.c:1444 2 locks held by syz-executor/6933: #0: ffff0000eb7e60e0 (&type->s_umount_key#51){+.+.}-{3:3}, at: __super_lock fs/super.c:56 [inline] #0: ffff0000eb7e60e0 (&type->s_umount_key#51){+.+.}-{3:3}, at: __super_lock_excl fs/super.c:71 [inline] #0: ffff0000eb7e60e0 (&type->s_umount_key#51){+.+.}-{3:3}, at: deactivate_super+0xd8/0x100 fs/super.c:505 #1: ffff80008e0d89c8 (jfs_log_mutex){+.+.}-{3:3}, at: lmLogClose+0xc8/0x4d4 fs/jfs/jfs_logmgr.c:1444 2 locks held by syz-executor/7021: #0: ffff0000ca97e0e0 (&type->s_umount_key#51){+.+.}-{3:3}, at: __super_lock fs/super.c:56 [inline] #0: ffff0000ca97e0e0 (&type->s_umount_key#51){+.+.}-{3:3}, at: __super_lock_excl fs/super.c:71 [inline] #0: ffff0000ca97e0e0 (&type->s_umount_key#51){+.+.}-{3:3}, at: deactivate_super+0xd8/0x100 fs/super.c:505 #1: ffff80008e0d89c8 (jfs_log_mutex){+.+.}-{3:3}, at: lmLogClose+0xc8/0x4d4 fs/jfs/jfs_logmgr.c:1444 2 locks held by syz-executor/7544: #0: ffff0000f2b1a0e0 (&type->s_umount_key#51){+.+.}-{3:3}, at: __super_lock fs/super.c:56 [inline] #0: ffff0000f2b1a0e0 (&type->s_umount_key#51){+.+.}-{3:3}, at: __super_lock_excl fs/super.c:71 [inline] #0: ffff0000f2b1a0e0 (&type->s_umount_key#51){+.+.}-{3:3}, at: deactivate_super+0xd8/0x100 fs/super.c:505 #1: ffff80008e0d89c8 (jfs_log_mutex){+.+.}-{3:3}, at: lmLogClose+0xc8/0x4d4 fs/jfs/jfs_logmgr.c:1444 2 locks held by syz-executor/7900: #0: ffff0000ff4aa0e0 (&type->s_umount_key#51){+.+.}-{3:3}, at: __super_lock fs/super.c:56 [inline] #0: ffff0000ff4aa0e0 (&type->s_umount_key#51){+.+.}-{3:3}, at: __super_lock_excl fs/super.c:71 [inline] #0: ffff0000ff4aa0e0 (&type->s_umount_key#51){+.+.}-{3:3}, at: deactivate_super+0xd8/0x100 fs/super.c:505 #1: ffff80008e0d89c8 (jfs_log_mutex){+.+.}-{3:3}, at: lmLogClose+0xc8/0x4d4 fs/jfs/jfs_logmgr.c:1444 1 lock held by syz-executor/8014: #0: ffff0000d520a0e0 (&type->s_umount_key#51){+.+.}-{3:3}, at: __super_lock fs/super.c:56 [inline] #0: ffff0000d520a0e0 (&type->s_umount_key#51){+.+.}-{3:3}, at: __super_lock_excl fs/super.c:71 [inline] #0: ffff0000d520a0e0 (&type->s_umount_key#51){+.+.}-{3:3}, at: deactivate_super+0xd8/0x100 fs/super.c:505 =============================================