INFO: task kworker/1:1H:1779 blocked for more than 430 seconds. Not tainted 5.12.0-rc1-syzkaller-00062-gcee407c5cc42 #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:kworker/1:1H state:D stack: 0 pid: 1779 ppid: 2 flags:0x00000008 Workqueue: glock_workqueue glock_work_func Call trace: __switch_to+0x1f8/0x32c arch/arm64/kernel/process.c:564 context_switch kernel/sched/core.c:4324 [inline] __schedule+0x810/0x1ac0 kernel/sched/core.c:5075 schedule+0xac/0x230 kernel/sched/core.c:5154 rwsem_down_write_slowpath+0x704/0xf10 kernel/locking/rwsem.c:1106 __down_write_common kernel/locking/rwsem.c:1261 [inline] __down_write_common kernel/locking/rwsem.c:1258 [inline] __down_write kernel/locking/rwsem.c:1270 [inline] down_write+0x1e8/0x24c kernel/locking/rwsem.c:1407 freeze_super+0x4c/0x30c fs/super.c:1664 freeze_go_sync+0x118/0x2d0 fs/gfs2/glops.c:574 do_xmote+0x228/0x8e0 fs/gfs2/glock.c:630 run_queue+0x264/0x490 fs/gfs2/glock.c:767 glock_work_func+0xa8/0x2d0 fs/gfs2/glock.c:934 process_one_work+0x798/0x1764 kernel/workqueue.c:2275 worker_thread+0x3d4/0xcd0 kernel/workqueue.c:2421 kthread+0x320/0x3bc kernel/kthread.c:292 ret_from_fork+0x10/0x3c arch/arm64/kernel/entry.S:958 INFO: task syz-executor.1:15281 blocked for more than 430 seconds. Not tainted 5.12.0-rc1-syzkaller-00062-gcee407c5cc42 #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz-executor.1 state:D stack: 0 pid:15281 ppid: 4549 flags:0x00400009 Call trace: __switch_to+0x1f8/0x32c arch/arm64/kernel/process.c:564 context_switch kernel/sched/core.c:4324 [inline] __schedule+0x810/0x1ac0 kernel/sched/core.c:5075 schedule+0xac/0x230 kernel/sched/core.c:5154 schedule_timeout+0x184/0x1f0 kernel/time/timer.c:1868 do_wait_for_common kernel/sched/completion.c:85 [inline] __wait_for_common+0x18c/0x2e4 kernel/sched/completion.c:106 wait_for_common kernel/sched/completion.c:117 [inline] wait_for_completion+0x20/0x2c kernel/sched/completion.c:138 flush_workqueue+0x2f4/0xf70 kernel/workqueue.c:2838 gfs2_gl_hash_clear+0xd4/0x290 fs/gfs2/glock.c:1998 gfs2_fill_super+0x16f0/0x1ef0 fs/gfs2/ops_fstype.c:1254 get_tree_bdev+0x314/0x5c0 fs/super.c:1292 gfs2_get_tree+0x44/0x1e0 fs/gfs2/ops_fstype.c:1277 vfs_get_tree+0x74/0x2a0 fs/super.c:1497 do_new_mount fs/namespace.c:2903 [inline] path_mount+0xe84/0x1da0 fs/namespace.c:3233 do_mount fs/namespace.c:3246 [inline] __do_sys_mount fs/namespace.c:3454 [inline] __se_sys_mount fs/namespace.c:3431 [inline] __arm64_sys_mount+0x2ec/0x520 fs/namespace.c:3431 __invoke_syscall arch/arm64/kernel/syscall.c:37 [inline] invoke_syscall arch/arm64/kernel/syscall.c:49 [inline] el0_svc_common.constprop.0+0xf0/0x2c0 arch/arm64/kernel/syscall.c:129 do_el0_svc_compat+0x40/0x70 arch/arm64/kernel/syscall.c:174 el0_svc_compat+0x24/0x3c arch/arm64/kernel/entry-common.c:494 el0_sync_compat_handler+0x90/0x140 arch/arm64/kernel/entry-common.c:503 el0_sync_compat+0x174/0x180 arch/arm64/kernel/entry.S:708 Showing all locks held in the system: 2 locks held by kworker/u4:2/27: 1 lock held by khungtaskd/1486: #0: ffff80001940e120 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x74/0x25c kernel/locking/lockdep.c:6329 3 locks held by kworker/1:1H/1779: #0: ffff00000d2d5138 ((wq_completion)glock_workqueue){+.+.}-{0:0}, at: process_one_work+0x6a4/0x1764 kernel/workqueue.c:2250 #1: ffff000011b67cd0 ((work_completion)(&(&gl->gl_work)->work)){+.+.}-{0:0}, at: process_one_work+0x6a4/0x1764 kernel/workqueue.c:2250 #2: ffff00001aecc0e0 (&type->s_umount_key#68){+.+.}-{3:3}, at: freeze_super+0x4c/0x30c fs/super.c:1664 1 lock held by klogd/4126: 2 locks held by getty/4394: #0: ffff00001844f098 (&tty->ldisc_sem){++++}-{0:0}, at: ldsem_down_read+0x40/0x50 drivers/tty/tty_ldsem.c:340 #1: ffff80001e09a2e8 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0x85c/0xc5c drivers/tty/n_tty.c:2178 1 lock held by kworker/0:1/12313: #0: ffff00006a36af98 (&rq->lock){-.-.}-{2:2}, at: rq_lock kernel/sched/sched.h:1321 [inline] #0: ffff00006a36af98 (&rq->lock){-.-.}-{2:2}, at: __schedule+0x268/0x1ac0 kernel/sched/core.c:4992 1 lock held by syz-executor.1/15281: #0: ffff00001aecc0e0 (&type->s_umount_key#67/1){+.+.}-{3:3}, at: alloc_super+0x16c/0x810 fs/super.c:229 =============================================