INFO: task syz-executor.2:5086 blocked for more than 143 seconds. Not tainted 6.1.0-rc8-syzkaller-33330-ga5541c0811a0 #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz-executor.2 state:D stack:0 pid:5086 ppid:3136 flags:0x0000000c Call trace: __switch_to+0x180/0x298 arch/arm64/kernel/process.c:555 context_switch kernel/sched/core.c:5209 [inline] __schedule+0x408/0x594 kernel/sched/core.c:6521 schedule+0x64/0xa4 kernel/sched/core.c:6597 io_schedule+0x38/0xbc kernel/sched/core.c:8741 folio_wait_bit_common+0x430/0x97c mm/filemap.c:1296 __folio_lock mm/filemap.c:1659 [inline] folio_lock include/linux/pagemap.h:939 [inline] __filemap_get_folio+0x180/0x9b0 mm/filemap.c:1931 truncate_inode_pages_range+0x254/0xb8c mm/truncate.c:378 truncate_inode_pages+0x2c/0x3c mm/truncate.c:452 kill_bdev block/bdev.c:76 [inline] blkdev_flush_mapping+0x90/0x190 block/bdev.c:662 blkdev_put_whole block/bdev.c:693 [inline] blkdev_put+0x1e0/0x284 block/bdev.c:953 blkdev_close+0x24/0x38 block/fops.c:499 __fput+0x198/0x3e4 fs/file_table.c:320 ____fput+0x20/0x30 fs/file_table.c:348 task_work_run+0x100/0x148 kernel/task_work.c:179 exit_task_work include/linux/task_work.h:38 [inline] do_exit+0x2dc/0xcac kernel/exit.c:820 do_group_exit+0x98/0xcc kernel/exit.c:950 get_signal+0xabc/0xb2c kernel/signal.c:2858 do_signal+0x128/0x438 arch/arm64/kernel/signal.c:1076 do_notify_resume+0xc0/0x1f0 arch/arm64/kernel/signal.c:1129 prepare_exit_to_user_mode arch/arm64/kernel/entry-common.c:137 [inline] exit_to_user_mode arch/arm64/kernel/entry-common.c:142 [inline] el0_svc+0x9c/0x150 arch/arm64/kernel/entry-common.c:638 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: ffff80000d4a4768 (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: ffff80000d4a4db8 (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: ffff80000d4a4640 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire+0x4/0x48 include/linux/rcupdate.h:303 2 locks held by getty/2762: #0: ffff0000c725a098 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x28/0x58 drivers/tty/tty_ldisc.c:244 #1: ffff80000f6be2f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0x19c/0x89c drivers/tty/n_tty.c:2177 1 lock held by syz-executor.2/5086: #0: ffff0000c56dbcc8 (&disk->open_mutex){+.+.}-{3:3}, at: blkdev_put+0x78/0x284 block/bdev.c:911 1 lock held by syz-executor.2/5197: #0: ffff0000c56dbcc8 (&disk->open_mutex){+.+.}-{3:3}, at: blkdev_get_by_dev+0xfc/0x2fc block/bdev.c:813 1 lock held by syz-executor.2/5198: #0: ffff0000c56dbcc8 (&disk->open_mutex){+.+.}-{3:3}, at: blkdev_get_by_dev+0xfc/0x2fc block/bdev.c:813 1 lock held by syz-executor.2/5267: #0: ffff0000c56dbcc8 (&disk->open_mutex){+.+.}-{3:3}, at: blkdev_get_by_dev+0xfc/0x2fc block/bdev.c:813 1 lock held by syz-executor.2/5268: #0: ffff0000c56dbcc8 (&disk->open_mutex){+.+.}-{3:3}, at: blkdev_get_by_dev+0xfc/0x2fc block/bdev.c:813 1 lock held by syz-executor.2/5269: #0: ffff0000c56dbcc8 (&disk->open_mutex){+.+.}-{3:3}, at: blkdev_get_by_dev+0xfc/0x2fc block/bdev.c:813 =============================================