INFO: task syz-executor202:6417 blocked for more than 143 seconds. Not tainted 6.13.0-rc3-syzkaller-g573067a5a685 #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz-executor202 state:D stack:0 pid:6417 tgid:6417 ppid:6414 flags:0x0000000c Call trace: __switch_to+0x414/0x788 arch/arm64/kernel/process.c:701 (T) context_switch kernel/sched/core.c:5369 [inline] __schedule+0x1744/0x27f0 kernel/sched/core.c:6756 __schedule_loop kernel/sched/core.c:6833 [inline] schedule+0xbc/0x238 kernel/sched/core.c:6848 schedule_preempt_disabled+0x18/0x2c kernel/sched/core.c:6905 __mutex_lock_common+0xeec/0x28f4 kernel/locking/mutex.c:665 __mutex_lock kernel/locking/mutex.c:735 [inline] mutex_lock_nested+0x2c/0x38 kernel/locking/mutex.c:787 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: ffff80008fb82560 (rcu_read_lock){....}-{1:3}, at: rcu_lock_acquire+0xc/0x44 include/linux/rcupdate.h:336 2 locks held by getty/6174: #0: ffff0000d75580a0 (&tty->ldisc_sem){++++}-{0:0}, at: ldsem_down_read+0x3c/0x4c drivers/tty/tty_ldsem.c:340 #1: ffff80009ba2b2f0 (&ldata->atomic_read_lock){+.+.}-{4:4}, at: n_tty_read+0x41c/0x1228 drivers/tty/n_tty.c:2211 2 locks held by syz-executor202/6415: #0: ffff0000c7d000e0 (&type->s_umount_key#43){+.+.}-{4:4}, at: __super_lock fs/super.c:56 [inline] #0: ffff0000c7d000e0 (&type->s_umount_key#43){+.+.}-{4:4}, at: __super_lock_excl fs/super.c:71 [inline] #0: ffff0000c7d000e0 (&type->s_umount_key#43){+.+.}-{4:4}, at: deactivate_super+0xd8/0x100 fs/super.c:505 #1: ffff80008ff92f08 (jfs_log_mutex){+.+.}-{4:4}, at: lmLogClose+0xc8/0x4d4 fs/jfs/jfs_logmgr.c:1444 2 locks held by syz-executor202/6416: #0: ffff0000c87e20e0 (&type->s_umount_key#43){+.+.}-{4:4}, at: __super_lock fs/super.c:56 [inline] #0: ffff0000c87e20e0 (&type->s_umount_key#43){+.+.}-{4:4}, at: __super_lock_excl fs/super.c:71 [inline] #0: ffff0000c87e20e0 (&type->s_umount_key#43){+.+.}-{4:4}, at: deactivate_super+0xd8/0x100 fs/super.c:505 #1: ffff80008ff92f08 (jfs_log_mutex){+.+.}-{4:4}, at: lmLogClose+0xc8/0x4d4 fs/jfs/jfs_logmgr.c:1444 2 locks held by syz-executor202/6417: #0: ffff0000c1fe60e0 (&type->s_umount_key#43){+.+.}-{4:4}, at: __super_lock fs/super.c:56 [inline] #0: ffff0000c1fe60e0 (&type->s_umount_key#43){+.+.}-{4:4}, at: __super_lock_excl fs/super.c:71 [inline] #0: ffff0000c1fe60e0 (&type->s_umount_key#43){+.+.}-{4:4}, at: deactivate_super+0xd8/0x100 fs/super.c:505 #1: ffff80008ff92f08 (jfs_log_mutex){+.+.}-{4:4}, at: lmLogClose+0xc8/0x4d4 fs/jfs/jfs_logmgr.c:1444 1 lock held by syz-executor202/6418: #0: ffff0000c869a0e0 (&type->s_umount_key#43){+.+.}-{4:4}, at: __super_lock fs/super.c:56 [inline] #0: ffff0000c869a0e0 (&type->s_umount_key#43){+.+.}-{4:4}, at: __super_lock_excl fs/super.c:71 [inline] #0: ffff0000c869a0e0 (&type->s_umount_key#43){+.+.}-{4:4}, at: deactivate_super+0xd8/0x100 fs/super.c:505 2 locks held by syz-executor202/6419: #0: ffff0000df9f40e0 (&type->s_umount_key#43){+.+.}-{4:4}, at: __super_lock fs/super.c:56 [inline] #0: ffff0000df9f40e0 (&type->s_umount_key#43){+.+.}-{4:4}, at: __super_lock_excl fs/super.c:71 [inline] #0: ffff0000df9f40e0 (&type->s_umount_key#43){+.+.}-{4:4}, at: deactivate_super+0xd8/0x100 fs/super.c:505 #1: ffff80008ff92f08 (jfs_log_mutex){+.+.}-{4:4}, at: lmLogClose+0xc8/0x4d4 fs/jfs/jfs_logmgr.c:1444 =============================================