INFO: task syz-executor:5853 blocked for more than 143 seconds. Not tainted 5.15.185-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz-executor state:D stack: 0 pid: 5853 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_timeout+0x180/0x2c8 kernel/time/timer.c:1914 gfs2_gl_hash_clear+0x174/0x2cc fs/gfs2/glock.c:2183 gfs2_put_super+0x614/0x6bc fs/gfs2/super.c:624 generic_shutdown_super+0x130/0x2f0 fs/super.c:475 kill_block_super+0x70/0xdc fs/super.c:1427 gfs2_kill_sb+0xc0/0xd4 fs/gfs2/ops_fstype.c:-1 deactivate_locked_super+0xb8/0x13c fs/super.c:335 deactivate_super+0xf8/0x118 fs/super.c:366 cleanup_mnt+0x3a4/0x458 fs/namespace.c:1139 __cleanup_mnt+0x20/0x30 fs/namespace.c:1146 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: 2 locks held by kworker/0:0/7: 1 lock held by khungtaskd/27: #0: ffff8000143311e0 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire+0xc/0x44 include/linux/rcupdate.h:311 2 locks held by kworker/u4:4/332: #0: ffff0000c0029138 ((wq_completion)events_unbound){+.+.}-{0:0}, at: process_one_work+0x678/0x1140 kernel/workqueue.c:2283 #1: ffff80001f487c00 (connector_reaper_work){+.+.}-{0:0}, at: process_one_work+0x6b8/0x1140 kernel/workqueue.c:2285 2 locks held by getty/3791: #0: ffff0000d46ab098 (&tty->ldisc_sem){++++}-{0:0}, at: ldsem_down_read+0x40/0x50 drivers/tty/tty_ldsem.c:340 #1: ffff80001b7902e8 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0x2f0/0xf6c drivers/tty/n_tty.c:2158 1 lock held by syz-executor/5853: #0: ffff0000dbbce0e0 (&type->s_umount_key#100){++++}-{3:3}, at: deactivate_super+0xf0/0x118 fs/super.c:365 1 lock held by syz-executor/11066: #0: ffff0000ceb040e0 (&type->s_umount_key#100){++++}-{3:3}, at: deactivate_super+0xf0/0x118 fs/super.c:365 2 locks held by udevd/11140: #0: ffff0000d544c460 (sb_writers#5){.+.+}-{0:0}, at: mnt_want_write+0x44/0x9c fs/namespace.c:377 #1: ffff0000d9222190 (&type->i_mutex_dir_key#5/1){+.+.}-{3:3}, at: inode_lock_nested include/linux/fs.h:822 [inline] #1: ffff0000d9222190 (&type->i_mutex_dir_key#5/1){+.+.}-{3:3}, at: do_unlinkat+0x18c/0x600 fs/namei.c:4331 2 locks held by udevd/12335: #0: ffff0000d544c460 (sb_writers#5){.+.+}-{0:0}, at: mnt_want_write+0x44/0x9c fs/namespace.c:377 #1: ffff0000d9222190 (&type->i_mutex_dir_key#5/1){+.+.}-{3:3}, at: inode_lock_nested include/linux/fs.h:822 [inline] #1: ffff0000d9222190 (&type->i_mutex_dir_key#5/1){+.+.}-{3:3}, at: do_unlinkat+0x18c/0x600 fs/namei.c:4331 2 locks held by syz.8.7208/20700: 3 locks held by syz.6.7214/20716: =============================================