INFO: task syz-executor.1:3895 blocked for more than 430 seconds. Tainted: G W 6.9.0-syzkaller-12124-g6d69b6c12fce #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz-executor.1 state:D stack:0 pid:3895 tgid:3893 ppid:3214 flags:0x00400005 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_compat_sys_openat fs/open.c:1480 [inline] __se_compat_sys_openat fs/open.c:1478 [inline] __arm64_compat_sys_openat+0x128/0x1b4 fs/open.c:1478 __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_compat+0x40/0x64 arch/arm64/kernel/syscall.c:158 el0_svc_compat+0x4c/0x17c arch/arm64/kernel/entry-common.c:852 el0t_32_sync_handler+0x98/0x13c arch/arm64/kernel/entry-common.c:862 el0t_32_sync+0x194/0x198 arch/arm64/kernel/entry.S:603 Showing all locks held in the system: 1 lock held by khungtaskd/31: #0: ffff800086a2e100 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x44/0x2d4 kernel/locking/lockdep.c:6608 2 locks held by kworker/u8:2/41: 1 lock held by klogd/3005: 2 locks held by getty/3136: #0: ffff000012b960a0 (&tty->ldisc_sem){++++}-{0:0}, at: ldsem_down_read+0x3c/0x4c drivers/tty/tty_ldsem.c:340 #1: ffff80008988d2f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0x93c/0xe9c drivers/tty/n_tty.c:2201 3 locks held by sshd/3191: 4 locks held by kworker/1:3/3210: 1 lock held by udevd/3347: #0: ffff0000109994c8 (&disk->open_mutex){+.+.}-{3:3}, at: bdev_open+0x2c4/0xa48 block/bdev.c:897 1 lock held by udevd/3392: #0: ffff00001099d4c8 (&disk->open_mutex){+.+.}-{3:3}, at: bdev_open+0x2c4/0xa48 block/bdev.c:897 1 lock held by syz-executor.1/3894: #0: ffff00001099d4c8 (&disk->open_mutex){+.+.}-{3:3}, at: bdev_release+0x104/0x510 block/bdev.c:1080 1 lock held by syz-executor.1/3895: #0: ffff00001099d4c8 (&disk->open_mutex){+.+.}-{3:3}, at: bdev_open+0x2c4/0xa48 block/bdev.c:897 1 lock held by syz-executor.0/4003: #0: ffff0000109994c8 (&disk->open_mutex){+.+.}-{3:3}, at: bdev_release+0x104/0x510 block/bdev.c:1080 1 lock held by syz-executor.0/4006: #0: ffff0000109994c8 (&disk->open_mutex){+.+.}-{3:3}, at: bdev_open+0x2c4/0xa48 block/bdev.c:897 1 lock held by syz-executor.1/4136: #0: ffff00001099d4c8 (&disk->open_mutex){+.+.}-{3:3}, at: bdev_open+0x2c4/0xa48 block/bdev.c:897 1 lock held by syz-executor.1/4139: #0: ffff00001099d4c8 (&disk->open_mutex){+.+.}-{3:3}, at: bdev_open+0x2c4/0xa48 block/bdev.c:897 1 lock held by syz-executor.0/4276: #0: ffff0000109994c8 (&disk->open_mutex){+.+.}-{3:3}, at: bdev_open+0x2c4/0xa48 block/bdev.c:897 3 locks held by syz-executor.0/4417: 1 lock held by syz-executor.1/4426: #0: ffff00001099d4c8 (&disk->open_mutex){+.+.}-{3:3}, at: bdev_open+0x2c4/0xa48 block/bdev.c:897 1 lock held by syz-executor.0/4570: #0: ffff0000109994c8 (&disk->open_mutex){+.+.}-{3:3}, at: bdev_open+0x2c4/0xa48 block/bdev.c:897 =============================================