INFO: task udevd:5610 blocked for more than 143 seconds. Not tainted 6.5.0-rc7-syzkaller-00063-g35e2132122ba-dirty #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:udevd state:D stack:0 pid:5610 ppid:5608 flags:0x0000000d Call trace: __switch_to+0x320/0x754 arch/arm64/kernel/process.c:556 context_switch kernel/sched/core.c:5381 [inline] __schedule+0x1364/0x23b4 kernel/sched/core.c:6710 schedule+0xc4/0x170 kernel/sched/core.c:6786 io_schedule+0x8c/0x12c kernel/sched/core.c:9028 folio_wait_bit_common+0x65c/0xb90 mm/filemap.c:1304 __folio_lock+0x2c/0x3c mm/filemap.c:1632 folio_lock include/linux/pagemap.h:959 [inline] truncate_inode_pages_range+0x930/0xf74 mm/truncate.c:422 truncate_inode_pages+0x2c/0x3c mm/truncate.c:449 kill_bdev block/bdev.c:76 [inline] blkdev_flush_mapping+0x134/0x280 block/bdev.c:647 blkdev_put_part block/bdev.c:713 [inline] blkdev_put+0x438/0x740 block/bdev.c:913 blkdev_release+0x84/0x9c block/fops.c:533 __fput+0x324/0x824 fs/file_table.c:384 ____fput+0x20/0x30 fs/file_table.c:412 task_work_run+0x230/0x2e0 kernel/task_work.c:179 resume_user_mode_work include/linux/resume_user_mode.h:49 [inline] do_notify_resume+0x2180/0x3c90 arch/arm64/kernel/signal.c:1305 exit_to_user_mode_prepare arch/arm64/kernel/entry-common.c:137 [inline] exit_to_user_mode arch/arm64/kernel/entry-common.c:144 [inline] el0_svc+0xa0/0x16c arch/arm64/kernel/entry-common.c:679 el0t_64_sync_handler+0x84/0xfc arch/arm64/kernel/entry-common.c:696 el0t_64_sync+0x190/0x194 arch/arm64/kernel/entry.S:591 INFO: task udevd:5614 blocked for more than 143 seconds. Not tainted 6.5.0-rc7-syzkaller-00063-g35e2132122ba-dirty #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:udevd state:D stack:0 pid:5614 ppid:5608 flags:0x00000005 Call trace: __switch_to+0x320/0x754 arch/arm64/kernel/process.c:556 context_switch kernel/sched/core.c:5381 [inline] __schedule+0x1364/0x23b4 kernel/sched/core.c:6710 schedule+0xc4/0x170 kernel/sched/core.c:6786 schedule_preempt_disabled+0x18/0x2c kernel/sched/core.c:6845 __mutex_lock_common+0xbd8/0x21a0 kernel/locking/mutex.c:679 __mutex_lock kernel/locking/mutex.c:747 [inline] mutex_lock_nested+0x2c/0x38 kernel/locking/mutex.c:799 blkdev_put+0xec/0x740 block/bdev.c:901 blkdev_release+0x84/0x9c block/fops.c:533 __fput+0x324/0x824 fs/file_table.c:384 ____fput+0x20/0x30 fs/file_table.c:412 task_work_run+0x230/0x2e0 kernel/task_work.c:179 resume_user_mode_work include/linux/resume_user_mode.h:49 [inline] do_notify_resume+0x2180/0x3c90 arch/arm64/kernel/signal.c:1305 exit_to_user_mode_prepare arch/arm64/kernel/entry-common.c:137 [inline] exit_to_user_mode arch/arm64/kernel/entry-common.c:144 [inline] el0_svc+0xa0/0x16c arch/arm64/kernel/entry-common.c:679 el0t_64_sync_handler+0x84/0xfc arch/arm64/kernel/entry-common.c:696 el0t_64_sync+0x190/0x194 arch/arm64/kernel/entry.S:591 Showing all locks held in the system: 1 lock held by rcu_tasks_kthre/13: #0: ffff80008e2718d0 (rcu_tasks.tasks_gp_mutex){+.+.}-{3:3}, at: rcu_tasks_one_gp+0x44/0xcf4 kernel/rcu/tasks.h:522 1 lock held by rcu_tasks_trace/14: #0: ffff80008e271c90 (rcu_tasks_trace.tasks_gp_mutex){+.+.}-{3:3}, at: rcu_tasks_one_gp+0x44/0xcf4 kernel/rcu/tasks.h:522 1 lock held by khungtaskd/28: #0: ffff80008e271700 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire+0xc/0x44 include/linux/rcupdate.h:302 2 locks held by kworker/u4:5/1864: 1 lock held by udevd/5610: #0: ffff0000cdbbf4c8 (&disk->open_mutex){+.+.}-{3:3}, at: blkdev_put+0xec/0x740 block/bdev.c:901 1 lock held by udevd/5614: #0: ffff0000cdbbf4c8 (&disk->open_mutex){+.+.}-{3:3}, at: blkdev_put+0xec/0x740 block/bdev.c:901 2 locks held by getty/5752: #0: ffff0000d467c098 (&tty->ldisc_sem){++++}-{0:0}, at: ldsem_down_read+0x3c/0x4c drivers/tty/tty_ldsem.c:340 #1: ffff800093ffa2f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0x414/0x1214 drivers/tty/n_tty.c:2187 1 lock held by syz-executor.1/6510: #0: ffff0000db2060e0 (&type->s_umount_key#49/1){+.+.}-{3:3}, at: alloc_super+0x1b4/0x80c fs/super.c:228 1 lock held by syz-executor.3/6516: #0: ffff0000c77c80e0 (&type->s_umount_key#49/1){+.+.}-{3:3}, at: alloc_super+0x1b4/0x80c fs/super.c:228 1 lock held by syz-executor.2/6524: #0: ffff0000c85200e0 (&type->s_umount_key#49/1){+.+.}-{3:3}, at: alloc_super+0x1b4/0x80c fs/super.c:228 1 lock held by syz-executor.0/6568: #0: ffff0000cf0980e0 (&type->s_umount_key#49/1){+.+.}-{3:3}, at: alloc_super+0x1b4/0x80c fs/super.c:228 1 lock held by syz-executor.5/6572: #0: ffff0000cf09e0e0 (&type->s_umount_key#49/1){+.+.}-{3:3}, at: alloc_super+0x1b4/0x80c fs/super.c:228 1 lock held by syz-executor.4/6571: #0: ffff0000dfaec0e0 (&type->s_umount_key#49/1){+.+.}-{3:3}, at: alloc_super+0x1b4/0x80c fs/super.c:228 =============================================