INFO: task syz-executor.4:8948 blocked for more than 143 seconds. Not tainted 6.1.83-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz-executor.4 state:D stack:0 pid:8948 ppid:4239 flags:0x00000005 Call trace: __switch_to+0x320/0x754 arch/arm64/kernel/process.c:553 context_switch kernel/sched/core.c:5245 [inline] __schedule+0xee4/0x1c98 kernel/sched/core.c:6558 schedule+0xc4/0x170 kernel/sched/core.c:6634 rwsem_down_write_slowpath+0xc80/0x156c kernel/locking/rwsem.c:1189 __down_write_common kernel/locking/rwsem.c:1314 [inline] __down_write kernel/locking/rwsem.c:1323 [inline] down_write+0x84/0x88 kernel/locking/rwsem.c:1574 filemap_invalidate_lock include/linux/fs.h:803 [inline] blk_ioctl_zeroout block/ioctl.c:185 [inline] blkdev_common_ioctl+0x1a08/0x26b4 block/ioctl.c:489 blkdev_ioctl+0x380/0xb40 block/ioctl.c:612 vfs_ioctl fs/ioctl.c:51 [inline] __do_sys_ioctl fs/ioctl.c:870 [inline] __se_sys_ioctl fs/ioctl.c:856 [inline] __arm64_sys_ioctl+0x14c/0x1c8 fs/ioctl.c:856 __invoke_syscall arch/arm64/kernel/syscall.c:38 [inline] invoke_syscall+0x98/0x2c0 arch/arm64/kernel/syscall.c:52 el0_svc_common+0x138/0x258 arch/arm64/kernel/syscall.c:142 do_el0_svc+0x64/0x218 arch/arm64/kernel/syscall.c:206 el0_svc+0x58/0x168 arch/arm64/kernel/entry-common.c:637 el0t_64_sync_handler+0x84/0xf0 arch/arm64/kernel/entry-common.c:655 el0t_64_sync+0x18c/0x190 arch/arm64/kernel/entry.S:585 Showing all locks held in the system: 1 lock held by rcu_tasks_kthre/12: #0: ffff800015a14e70 (rcu_tasks.tasks_gp_mutex){+.+.}-{3:3}, at: rcu_tasks_one_gp+0x44/0xcf4 kernel/rcu/tasks.h:516 1 lock held by rcu_tasks_trace/13: #0: ffff800015a15670 (rcu_tasks_trace.tasks_gp_mutex){+.+.}-{3:3}, at: rcu_tasks_one_gp+0x44/0xcf4 kernel/rcu/tasks.h:516 1 lock held by khungtaskd/28: #0: ffff800015a14ca0 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire+0xc/0x44 include/linux/rcupdate.h:349 2 locks held by getty/3986: #0: ffff0000d684c098 (&tty->ldisc_sem){++++}-{0:0}, at: ldsem_down_read+0x3c/0x4c drivers/tty/tty_ldsem.c:340 #1: ffff80001bcd02f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0x414/0x1214 drivers/tty/n_tty.c:2188 2 locks held by kworker/u4:6/4443: 3 locks held by syz-executor.3/8887: 1 lock held by syz-executor.4/8948: #0: ffff0000c05488d8 (mapping.invalidate_lock#2){++++}-{3:3}, at: filemap_invalidate_lock include/linux/fs.h:803 [inline] #0: ffff0000c05488d8 (mapping.invalidate_lock#2){++++}-{3:3}, at: blk_ioctl_zeroout block/ioctl.c:185 [inline] #0: ffff0000c05488d8 (mapping.invalidate_lock#2){++++}-{3:3}, at: blkdev_common_ioctl+0x1a08/0x26b4 block/ioctl.c:489 1 lock held by syz-executor.4/9854: #0: ffff0000c05488d8 (mapping.invalidate_lock#2){++++}-{3:3}, at: filemap_invalidate_lock_shared include/linux/fs.h:813 [inline] #0: ffff0000c05488d8 (mapping.invalidate_lock#2){++++}-{3:3}, at: page_cache_ra_unbounded+0xc8/0x58c mm/readahead.c:226 1 lock held by syz-executor.4/9855: #0: ffff800017b7c228 (register_mutex#4){+.+.}-{3:3}, at: odev_open+0x78/0xbc sound/core/seq/oss/seq_oss.c:127 1 lock held by syz-executor.4/9856: #0: ffff800017b7c228 (register_mutex#4){+.+.}-{3:3}, at: odev_open+0x78/0xbc sound/core/seq/oss/seq_oss.c:127 1 lock held by syz-executor.0/10044: #0: ffff800017b7c228 (register_mutex#4){+.+.}-{3:3}, at: odev_open+0x78/0xbc sound/core/seq/oss/seq_oss.c:127 1 lock held by syz-executor.0/10045: #0: ffff800017b7c228 (register_mutex#4){+.+.}-{3:3}, at: odev_open+0x78/0xbc sound/core/seq/oss/seq_oss.c:127 1 lock held by syz-executor.2/10323: #0: ffff800017b7c228 (register_mutex#4){+.+.}-{3:3}, at: odev_open+0x78/0xbc sound/core/seq/oss/seq_oss.c:127 1 lock held by syz-executor.4/10560: #0: ffff800017b7c228 (register_mutex#4){+.+.}-{3:3}, at: odev_open+0x78/0xbc sound/core/seq/oss/seq_oss.c:127 =============================================