INFO: task syz-executor.1:16786 blocked for more than 143 seconds. Not tainted 6.2.0-rc4-syzkaller-16807-gedb2f0dc90f2 #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz-executor.1 state:D stack:0 pid:16786 ppid:16745 flags:0x00000001 Call trace: __switch_to+0x180/0x298 arch/arm64/kernel/process.c:556 context_switch kernel/sched/core.c:5293 [inline] __schedule+0x438/0x5a0 kernel/sched/core.c:6606 schedule+0x64/0xa4 kernel/sched/core.c:6682 rwsem_down_write_slowpath+0x258/0x468 kernel/locking/rwsem.c:1190 __down_write_common kernel/locking/rwsem.c:1305 [inline] __down_write kernel/locking/rwsem.c:1314 [inline] down_write+0x84/0x88 kernel/locking/rwsem.c:1563 grab_super+0x44/0x140 fs/super.c:386 sget+0xe0/0x268 fs/super.c:635 mount_bdev+0xcc/0x210 fs/super.c:1330 befs_mount+0x44/0x58 fs/befs/linuxvfs.c:977 legacy_get_tree+0x30/0x74 fs/fs_context.c:610 vfs_get_tree+0x40/0x140 fs/super.c:1489 do_new_mount+0x1dc/0x4e4 fs/namespace.c:3145 path_mount+0x358/0x890 fs/namespace.c:3475 do_mount fs/namespace.c:3488 [inline] __do_sys_mount fs/namespace.c:3697 [inline] __se_sys_mount fs/namespace.c:3674 [inline] __arm64_sys_mount+0x2c4/0x3c4 fs/namespace.c:3674 __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+0x48/0x104 arch/arm64/kernel/syscall.c:193 el0_svc+0x58/0x150 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:584 INFO: task syz-executor.1:16787 blocked for more than 143 seconds. Not tainted 6.2.0-rc4-syzkaller-16807-gedb2f0dc90f2 #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz-executor.1 state:D stack:0 pid:16787 ppid:16745 flags:0x00000001 Call trace: __switch_to+0x180/0x298 arch/arm64/kernel/process.c:556 context_switch kernel/sched/core.c:5293 [inline] __schedule+0x438/0x5a0 kernel/sched/core.c:6606 schedule+0x64/0xa4 kernel/sched/core.c:6682 schedule_preempt_disabled+0x18/0x2c kernel/sched/core.c:6741 __mutex_lock_common+0x788/0xca8 kernel/locking/mutex.c:679 __mutex_lock kernel/locking/mutex.c:747 [inline] mutex_lock_nested+0x38/0x44 kernel/locking/mutex.c:799 mount_bdev+0x80/0x210 fs/super.c:1324 befs_mount+0x44/0x58 fs/befs/linuxvfs.c:977 legacy_get_tree+0x30/0x74 fs/fs_context.c:610 vfs_get_tree+0x40/0x140 fs/super.c:1489 do_new_mount+0x1dc/0x4e4 fs/namespace.c:3145 path_mount+0x358/0x890 fs/namespace.c:3475 do_mount fs/namespace.c:3488 [inline] __do_sys_mount fs/namespace.c:3697 [inline] __se_sys_mount fs/namespace.c:3674 [inline] __arm64_sys_mount+0x2c4/0x3c4 fs/namespace.c:3674 __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+0x48/0x104 arch/arm64/kernel/syscall.c:193 el0_svc+0x58/0x150 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:584 Showing all locks held in the system: 1 lock held by rcu_tasks_kthre/11: #0: ffff80000d6556c8 (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: ffff80000d655d18 (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: ffff80000d6555a0 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire+0x4/0x48 include/linux/rcupdate.h:324 2 locks held by getty/4077: #0: ffff0000c2672898 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x28/0x58 drivers/tty/tty_ldisc.c:244 #1: ffff80000f8662f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0x19c/0x89c drivers/tty/n_tty.c:2177 2 locks held by kworker/u4:17/6274: 1 lock held by syz-executor.3/12496: 1 lock held by syz-executor.3/12661: 1 lock held by syz-executor.1/16645: #0: ffff00014a4570e0 (&type->s_umount_key#108/1){+.+.}-{3:3}, at: alloc_super+0xf8/0x430 fs/super.c:228 2 locks held by syz-executor.1/16786: #0: ffff0000c62af920 (&bdev->bd_fsfreeze_mutex){+.+.}-{3:3}, at: mount_bdev+0x80/0x210 fs/super.c:1324 #1: ffff00014a4570e0 (&type->s_umount_key#109){+.+.}-{3:3}, at: grab_super+0x44/0x140 fs/super.c:386 1 lock held by syz-executor.1/16787: #0: ffff0000c62af920 (&bdev->bd_fsfreeze_mutex){+.+.}-{3:3}, at: mount_bdev+0x80/0x210 fs/super.c:1324 1 lock held by syz-executor.1/16846: #0: ffff0000c62af920 (&bdev->bd_fsfreeze_mutex){+.+.}-{3:3}, at: mount_bdev+0x80/0x210 fs/super.c:1324 1 lock held by syz-executor.3/17476: =============================================