INFO: task syz-executor.2:18082 blocked for more than 143 seconds. Not tainted 6.0.0-rc7-syzkaller-18095-gbbed346d5a96 #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz-executor.2 state:D stack: 0 pid:18082 ppid: 3069 flags:0x00000009 Call trace: __switch_to+0x180/0x298 arch/arm64/kernel/process.c:557 context_switch kernel/sched/core.c:5182 [inline] __schedule+0x414/0x5a0 kernel/sched/core.c:6494 schedule+0x64/0xa4 kernel/sched/core.c:6570 schedule_timeout+0x64/0x1b4 kernel/time/timer.c:1911 do_wait_for_common+0xf4/0x184 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 kthread_stop+0xa8/0x1c0 kernel/kthread.c:708 gfs2_make_fs_ro+0x6c/0x390 fs/gfs2/super.c:528 signal_our_withdraw+0x174/0x7b0 fs/gfs2/util.c:166 gfs2_withdraw+0x154/0x2e4 fs/gfs2/util.c:343 gfs2_meta_check_ii+0x60/0x7c fs/gfs2/util.c:501 gfs2_metatype_check_i fs/gfs2/util.h:126 [inline] gfs2_quota_init+0x6e8/0x804 fs/gfs2/quota.c:1399 gfs2_make_fs_rw+0x1a8/0x23c fs/gfs2/super.c:153 gfs2_fill_super+0x744/0x874 fs/gfs2/ops_fstype.c:1267 get_tree_bdev+0x1e8/0x2a0 fs/super.c:1323 gfs2_get_tree+0x30/0xc0 fs/gfs2/ops_fstype.c:1323 vfs_get_tree+0x40/0x140 fs/super.c:1530 do_new_mount+0x1dc/0x4e4 fs/namespace.c:3040 path_mount+0x358/0x914 fs/namespace.c:3370 do_mount fs/namespace.c:3383 [inline] __do_sys_mount fs/namespace.c:3591 [inline] __se_sys_mount fs/namespace.c:3568 [inline] __arm64_sys_mount+0x2c4/0x3c4 fs/namespace.c:3568 __invoke_syscall arch/arm64/kernel/syscall.c:38 [inline] invoke_syscall arch/arm64/kernel/syscall.c:52 [inline] el0_svc_common+0x138/0x220 arch/arm64/kernel/syscall.c:142 do_el0_svc+0x48/0x164 arch/arm64/kernel/syscall.c:206 el0_svc+0x58/0x150 arch/arm64/kernel/entry-common.c:636 el0t_64_sync_handler+0x84/0xf0 arch/arm64/kernel/entry-common.c:654 el0t_64_sync+0x18c/0x190 arch/arm64/kernel/entry.S:581 INFO: task gfs2_quotad:18097 blocked for more than 143 seconds. Not tainted 6.0.0-rc7-syzkaller-18095-gbbed346d5a96 #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:gfs2_quotad state:D stack: 0 pid:18097 ppid: 2 flags:0x00000008 Call trace: __switch_to+0x180/0x298 arch/arm64/kernel/process.c:557 context_switch kernel/sched/core.c:5182 [inline] __schedule+0x414/0x5a0 kernel/sched/core.c:6494 schedule+0x64/0xa4 kernel/sched/core.c:6570 bit_wait+0x18/0x60 kernel/sched/wait_bit.c:199 __wait_on_bit kernel/sched/wait_bit.c:49 [inline] out_of_line_wait_on_bit+0xc8/0x140 kernel/sched/wait_bit.c:64 wait_on_bit include/linux/wait_bit.h:76 [inline] __gfs2_glock_dq+0x2c0/0x468 fs/gfs2/glock.c:1607 gfs2_glock_dq+0xdc/0xfc fs/gfs2/glock.c:1679 gfs2_glock_dq_uninit+0x24/0x7c fs/gfs2/glock.c:1699 gfs2_statfs_sync+0x298/0x2cc fs/gfs2/super.c:306 quotad_check_timeo fs/gfs2/quota.c:1512 [inline] gfs2_quotad+0x1c4/0x5b4 fs/gfs2/quota.c:1554 kthread+0x12c/0x158 kernel/kthread.c:376 ret_from_fork+0x10/0x20 arch/arm64/kernel/entry.S:860 Showing all locks held in the system: 1 lock held by rcu_tasks_kthre/11: #0: ffff80000d433568 (rcu_tasks.tasks_gp_mutex){+.+.}-{3:3}, at: rcu_tasks_one_gp+0x3c/0x450 kernel/rcu/tasks.h:507 1 lock held by rcu_tasks_trace/12: #0: ffff80000d433bb8 (rcu_tasks_trace.tasks_gp_mutex){+.+.}-{3:3}, at: rcu_tasks_one_gp+0x3c/0x450 kernel/rcu/tasks.h:507 1 lock held by khungtaskd/27: #0: ffff80000d433440 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire+0x4/0x48 include/linux/rcupdate.h:279 2 locks held by getty/2712: #0: ffff0000c63b1098 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x28/0x58 drivers/tty/tty_ldisc.c:244 #1: ffff80000f6162f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0x19c/0x89c drivers/tty/n_tty.c:2177 3 locks held by kworker/1:5/3130: #0: ffff0000c0010738 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work+0x270/0x504 kernel/workqueue.c:2262 #1: ffff80001341bd80 ((work_completion)(&fw_work->work)){+.+.}-{0:0}, at: process_one_work+0x29c/0x504 kernel/workqueue.c:2264 #2: ffff80000d349230 (umhelper_sem){++++}-{3:3}, at: usermodehelper_read_lock_wait+0x68/0x154 kernel/umh.c:249 1 lock held by syz-executor.2/18082: #0: ffff0001009760e0 (&type->s_umount_key#56/1){+.+.}-{3:3}, at: alloc_super+0xf8/0x430 fs/super.c:228 =============================================