INFO: task udevd:3403 blocked for more than 430 seconds. Not tainted 6.10.0-rc4-syzkaller-00052-ge5b3efbe1ab1 #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:udevd state:D stack:0 pid:3403 tgid:3403 ppid:3022 flags:0x00000005 Call trace: __switch_to+0x1c8/0x2a0 arch/arm64/kernel/process.c:553 context_switch kernel/sched/core.c:5408 [inline] __schedule+0xad4/0x2b18 kernel/sched/core.c:6745 __schedule_loop kernel/sched/core.c:6822 [inline] schedule+0xd0/0x304 kernel/sched/core.c:6837 schedule_preempt_disabled+0x18/0x2c kernel/sched/core.c:6894 __mutex_lock_common kernel/locking/mutex.c:684 [inline] __mutex_lock+0x4e8/0x840 kernel/locking/mutex.c:752 mutex_lock_nested+0x24/0x30 kernel/locking/mutex.c:804 bdev_open+0x2c4/0xa48 block/bdev.c:897 blkdev_open+0x114/0x194 block/fops.c:615 do_dentry_open+0x510/0x12e8 fs/open.c:955 vfs_open+0x54/0x8c fs/open.c:1089 do_open fs/namei.c:3650 [inline] path_openat+0x14a0/0x20ec fs/namei.c:3807 do_filp_open+0x16c/0x330 fs/namei.c:3834 do_sys_openat2+0x12c/0x160 fs/open.c:1405 do_sys_open fs/open.c:1420 [inline] __do_sys_openat fs/open.c:1436 [inline] __se_sys_openat fs/open.c:1431 [inline] __arm64_sys_openat+0x12c/0x1b8 fs/open.c:1431 __invoke_syscall arch/arm64/kernel/syscall.c:34 [inline] invoke_syscall+0x6c/0x25c arch/arm64/kernel/syscall.c:48 el0_svc_common.constprop.0+0xac/0x230 arch/arm64/kernel/syscall.c:133 do_el0_svc+0x40/0x58 arch/arm64/kernel/syscall.c:152 el0_svc+0x50/0x180 arch/arm64/kernel/entry-common.c:712 el0t_64_sync_handler+0x100/0x12c arch/arm64/kernel/entry-common.c:730 el0t_64_sync+0x190/0x194 arch/arm64/kernel/entry.S:598 INFO: task syz-executor.0:5892 blocked for more than 430 seconds. Not tainted 6.10.0-rc4-syzkaller-00052-ge5b3efbe1ab1 #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz-executor.0 state:D stack:0 pid:5892 tgid:5892 ppid:3221 flags:0x00000005 Call trace: __switch_to+0x1c8/0x2a0 arch/arm64/kernel/process.c:553 context_switch kernel/sched/core.c:5408 [inline] __schedule+0xad4/0x2b18 kernel/sched/core.c:6745 __schedule_loop kernel/sched/core.c:6822 [inline] schedule+0xd0/0x304 kernel/sched/core.c:6837 schedule_preempt_disabled+0x18/0x2c kernel/sched/core.c:6894 __mutex_lock_common kernel/locking/mutex.c:684 [inline] __mutex_lock+0x4e8/0x840 kernel/locking/mutex.c:752 mutex_lock_nested+0x24/0x30 kernel/locking/mutex.c:804 bdev_release+0x104/0x510 block/bdev.c:1080 blkdev_release+0x14/0x24 block/fops.c:623 __fput+0x2bc/0x95c fs/file_table.c:422 ____fput+0x10/0x1c fs/file_table.c:450 task_work_run+0x124/0x20c kernel/task_work.c:180 resume_user_mode_work include/linux/resume_user_mode.h:50 [inline] do_notify_resume+0x1d4/0x25c arch/arm64/kernel/entry-common.c:151 exit_to_user_mode_prepare arch/arm64/kernel/entry-common.c:169 [inline] exit_to_user_mode arch/arm64/kernel/entry-common.c:178 [inline] el0_svc+0x100/0x180 arch/arm64/kernel/entry-common.c:713 el0t_64_sync_handler+0x100/0x12c arch/arm64/kernel/entry-common.c:730 el0t_64_sync+0x190/0x194 arch/arm64/kernel/entry.S:598 INFO: task syz-executor.0:5894 blocked for more than 430 seconds. Not tainted 6.10.0-rc4-syzkaller-00052-ge5b3efbe1ab1 #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz-executor.0 state:D stack:0 pid:5894 tgid:5892 ppid:3221 flags:0x0000000d Call trace: __switch_to+0x1c8/0x2a0 arch/arm64/kernel/process.c:553 context_switch kernel/sched/core.c:5408 [inline] __schedule+0xad4/0x2b18 kernel/sched/core.c:6745 __schedule_loop kernel/sched/core.c:6822 [inline] schedule+0xd0/0x304 kernel/sched/core.c:6837 schedule_preempt_disabled+0x18/0x2c kernel/sched/core.c:6894 __mutex_lock_common kernel/locking/mutex.c:684 [inline] __mutex_lock+0x4e8/0x840 kernel/locking/mutex.c:752 mutex_lock_nested+0x24/0x30 kernel/locking/mutex.c:804 bdev_release+0x104/0x510 block/bdev.c:1080 blkdev_release+0x14/0x24 block/fops.c:623 __fput+0x2bc/0x95c fs/file_table.c:422 ____fput+0x10/0x1c fs/file_table.c:450 task_work_run+0x124/0x20c kernel/task_work.c:180 resume_user_mode_work include/linux/resume_user_mode.h:50 [inline] do_notify_resume+0x1d4/0x25c arch/arm64/kernel/entry-common.c:151 exit_to_user_mode_prepare arch/arm64/kernel/entry-common.c:169 [inline] exit_to_user_mode arch/arm64/kernel/entry-common.c:178 [inline] el0_svc+0x100/0x180 arch/arm64/kernel/entry-common.c:713 el0t_64_sync_handler+0x100/0x12c arch/arm64/kernel/entry-common.c:730 el0t_64_sync+0x190/0x194 arch/arm64/kernel/entry.S:598 Showing all locks held in the system: 1 lock held by khungtaskd/31: #0: ffff800086a8e100 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x44/0x2d4 kernel/locking/lockdep.c:6608 2 locks held by getty/3143: #0: ffff0000136890a0 (&tty->ldisc_sem){++++}-{0:0}, at: ldsem_down_read+0x3c/0x4c drivers/tty/tty_ldsem.c:340 #1: ffff80008990d2f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0x93c/0xe9c drivers/tty/n_tty.c:2211 2 locks held by syz-fuzzer/3213: 1 lock held by udevd/3403: #0: ffff000010b544c8 (&disk->open_mutex){+.+.}-{3:3}, at: bdev_open+0x2c4/0xa48 block/bdev.c:897 3 locks held by syz-executor.1/4011: 1 lock held by syz-executor.0/5892: #0: ffff000010b544c8 (&disk->open_mutex){+.+.}-{3:3}, at: bdev_release+0x104/0x510 block/bdev.c:1080 1 lock held by syz-executor.0/5894: #0: ffff000010b544c8 (&disk->open_mutex){+.+.}-{3:3}, at: bdev_release+0x104/0x510 block/bdev.c:1080 1 lock held by syz-executor.0/5897: #0: ffff000010b544c8 (&disk->open_mutex){+.+.}-{3:3}, at: bdev_open+0x2c4/0xa48 block/bdev.c:897 2 locks held by syz-executor.0/6216: 3 locks held by kworker/u8:0/7197: 1 lock held by syz-executor.0/7833: #0: ffff0000183b0e10 (&sb->s_type->i_mutex_key#11){+.+.}-{3:3}, at: inode_lock include/linux/fs.h:791 [inline] #0: ffff0000183b0e10 (&sb->s_type->i_mutex_key#11){+.+.}-{3:3}, at: __sock_release+0x68/0x1f0 net/socket.c:658 5 locks held by syz-executor.1/7835: =============================================