INFO: task kworker/1:1H:52 blocked for more than 144 seconds. Not tainted 6.3.0-rc7-syzkaller-g14f8db1c0f9a #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:kworker/1:1H state:D stack:0 pid:52 ppid:2 flags:0x00000008 Workqueue: glock_workqueue glock_work_func Call trace: __switch_to+0x320/0x754 arch/arm64/kernel/process.c:556 context_switch kernel/sched/core.c:5307 [inline] __schedule+0x103c/0x1e2c kernel/sched/core.c:6625 schedule+0xc4/0x170 kernel/sched/core.c:6701 schedule_preempt_disabled+0x18/0x2c kernel/sched/core.c:6760 rwsem_down_write_slowpath+0xcfc/0x1aa0 kernel/locking/rwsem.c:1178 __down_write_common kernel/locking/rwsem.c:1306 [inline] __down_write kernel/locking/rwsem.c:1315 [inline] down_write+0xb4/0xc0 kernel/locking/rwsem.c:1574 freeze_super+0x58/0x378 fs/super.c:1676 freeze_go_sync+0x128/0x31c fs/gfs2/glops.c:580 do_xmote+0x2f0/0x11c0 fs/gfs2/glock.c:706 run_queue+0x400/0x688 fs/gfs2/glock.c:844 glock_work_func+0x270/0x440 fs/gfs2/glock.c:1076 process_one_work+0x788/0x12d4 kernel/workqueue.c:2390 worker_thread+0x8e0/0xfe8 kernel/workqueue.c:2537 kthread+0x24c/0x2d4 kernel/kthread.c:376 ret_from_fork+0x10/0x20 arch/arm64/kernel/entry.S:870 INFO: task syz-executor.5:6373 blocked for more than 144 seconds. Not tainted 6.3.0-rc7-syzkaller-g14f8db1c0f9a #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz-executor.5 state:D stack:0 pid:6373 ppid:6047 flags:0x00000009 Call trace: __switch_to+0x320/0x754 arch/arm64/kernel/process.c:556 context_switch kernel/sched/core.c:5307 [inline] __schedule+0x103c/0x1e2c kernel/sched/core.c:6625 schedule+0xc4/0x170 kernel/sched/core.c:6701 schedule_timeout+0xb8/0x348 kernel/time/timer.c:2143 do_wait_for_common+0x30c/0x468 kernel/sched/completion.c:85 __wait_for_common kernel/sched/completion.c:106 [inline] wait_for_common kernel/sched/completion.c:117 [inline] wait_for_completion+0x48/0x60 kernel/sched/completion.c:138 __flush_workqueue+0x580/0x11c4 kernel/workqueue.c:2962 gfs2_gl_hash_clear+0xd0/0x2e0 fs/gfs2/glock.c:2197 gfs2_fill_super+0x1bfc/0x1fd4 fs/gfs2/ops_fstype.c:1313 get_tree_bdev+0x360/0x54c fs/super.c:1303 gfs2_get_tree+0x54/0x1b4 fs/gfs2/ops_fstype.c:1338 vfs_get_tree+0x90/0x274 fs/super.c:1510 do_new_mount+0x25c/0x8c8 fs/namespace.c:3042 path_mount+0x590/0xe04 fs/namespace.c:3372 do_mount fs/namespace.c:3385 [inline] __do_sys_mount fs/namespace.c:3594 [inline] __se_sys_mount fs/namespace.c:3571 [inline] __arm64_sys_mount+0x45c/0x594 fs/namespace.c:3571 __invoke_syscall arch/arm64/kernel/syscall.c:38 [inline] invoke_syscall+0x98/0x2c0 arch/arm64/kernel/syscall.c:52 el0_svc_common+0x138/0x258 arch/arm64/kernel/syscall.c:142 do_el0_svc+0x64/0x198 arch/arm64/kernel/syscall.c:193 el0_svc+0x4c/0x15c arch/arm64/kernel/entry-common.c:637 el0t_64_sync_handler+0x84/0xf0 arch/arm64/kernel/entry-common.c:655 el0t_64_sync+0x190/0x194 arch/arm64/kernel/entry.S:591 Showing all locks held in the system: 1 lock held by rcu_tasks_kthre/12: #0: ffff800015e4f0d0 (rcu_tasks.tasks_gp_mutex){+.+.}-{3:3}, at: rcu_tasks_one_gp+0x44/0xcf4 kernel/rcu/tasks.h:510 1 lock held by rcu_tasks_trace/13: #0: ffff800015e4f8d0 (rcu_tasks_trace.tasks_gp_mutex){+.+.}-{3:3}, at: rcu_tasks_one_gp+0x44/0xcf4 kernel/rcu/tasks.h:510 1 lock held by khungtaskd/28: #0: ffff800015e4ef00 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire+0xc/0x44 include/linux/rcupdate.h:326 3 locks held by kworker/1:1H/52: #0: ffff0000c3c3c938 ((wq_completion)glock_workqueue){+.+.}-{0:0}, at: process_one_work+0x664/0x12d4 kernel/workqueue.c:2363 #1: ffff80001aa87c20 ((work_completion)(&(&gl->gl_work)->work)){+.+.}-{0:0}, at: process_one_work+0x6a8/0x12d4 kernel/workqueue.c:2365 #2: ffff0000dbc4a0e0 (&type->s_umount_key#55){++++}-{3:3}, at: freeze_super+0x58/0x378 fs/super.c:1676 2 locks held by getty/5673: #0: ffff0000d8763098 (&tty->ldisc_sem){++++}-{0:0}, at: ldsem_down_read+0x3c/0x4c drivers/tty/tty_ldsem.c:340 #1: ffff80001aae02f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0x414/0x1210 drivers/tty/n_tty.c:2177 1 lock held by syz-executor.5/6373: #0: ffff0000dbc4a0e0 (&type->s_umount_key#53/1){+.+.}-{3:3}, at: alloc_super+0x1b4/0x824 fs/super.c:228 3 locks held by kworker/u4:16/7720: 1 lock held by syz-executor.5/9626: #0: ffff0000dbc4a0e0 (&type->s_umount_key#55){++++}-{3:3}, at: iterate_supers+0xb0/0x1dc fs/super.c:743 2 locks held by syz-executor.4/9628: #0: ffff0000d8f58460 (sb_writers#4){.+.+}-{0:0}, at: do_sendfile+0x4a0/0xc70 fs/read_write.c:1254 #1: ffff0000dbc4a0e0 (&type->s_umount_key#55){++++}-{3:3}, at: iterate_supers+0xb0/0x1dc fs/super.c:743 =============================================