INFO: task udevd:8693 blocked for more than 143 seconds. Not tainted 6.2.0-syzkaller-18302-g596b6b709632 #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:udevd state:D stack:0 pid:8693 ppid:5453 flags:0x00000000 Call trace: __switch_to+0x320/0x754 arch/arm64/kernel/process.c:556 context_switch kernel/sched/core.c:5296 [inline] __schedule+0xfc8/0x1d64 kernel/sched/core.c:6609 schedule+0xc4/0x170 kernel/sched/core.c:6685 schedule_preempt_disabled+0x18/0x2c kernel/sched/core.c:6744 __mutex_lock_common+0xbd8/0x21a0 kernel/locking/mutex.c:679 __mutex_lock kernel/locking/mutex.c:747 [inline] mutex_lock_nested+0x38/0x44 kernel/locking/mutex.c:799 blkdev_get_by_dev+0x12c/0x8f8 block/bdev.c:813 blkdev_open+0x10c/0x290 block/fops.c:478 do_dentry_open+0x734/0xfa0 fs/open.c:882 vfs_open+0x7c/0x90 fs/open.c:1013 do_open fs/namei.c:3557 [inline] path_openat+0x1d88/0x2578 fs/namei.c:3714 do_filp_open+0x1bc/0x3cc fs/namei.c:3741 do_sys_openat2+0x128/0x3d8 fs/open.c:1310 do_sys_open fs/open.c:1326 [inline] __do_sys_openat fs/open.c:1342 [inline] __se_sys_openat fs/open.c:1337 [inline] __arm64_sys_openat+0x1f0/0x240 fs/open.c:1337 __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+0x64/0x198 arch/arm64/kernel/syscall.c:193 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+0x190/0x194 arch/arm64/kernel/entry.S:591 INFO: task syz-executor.0:10726 blocked for more than 143 seconds. Not tainted 6.2.0-syzkaller-18302-g596b6b709632 #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz-executor.0 state:D stack:0 pid:10726 ppid:5953 flags:0x00000001 Call trace: __switch_to+0x320/0x754 arch/arm64/kernel/process.c:556 context_switch kernel/sched/core.c:5296 [inline] __schedule+0xfc8/0x1d64 kernel/sched/core.c:6609 schedule+0xc4/0x170 kernel/sched/core.c:6685 schedule_preempt_disabled+0x18/0x2c kernel/sched/core.c:6744 __mutex_lock_common+0xbd8/0x21a0 kernel/locking/mutex.c:679 __mutex_lock kernel/locking/mutex.c:747 [inline] mutex_lock_nested+0x38/0x44 kernel/locking/mutex.c:799 blkdev_put+0xec/0x6e0 block/bdev.c:911 blkdev_close+0x58/0x94 block/fops.c:492 __fput+0x30c/0x7bc fs/file_table.c:320 ____fput+0x20/0x30 fs/file_table.c:348 task_work_run+0x240/0x2f0 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:1302 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/0x168 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:591 INFO: task syz-executor.0:10738 blocked for more than 143 seconds. Not tainted 6.2.0-syzkaller-18302-g596b6b709632 #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz-executor.0 state:D stack:0 pid:10738 ppid:5953 flags:0x00000009 Call trace: __switch_to+0x320/0x754 arch/arm64/kernel/process.c:556 context_switch kernel/sched/core.c:5296 [inline] __schedule+0xfc8/0x1d64 kernel/sched/core.c:6609 schedule+0xc4/0x170 kernel/sched/core.c:6685 io_schedule+0x8c/0x120 kernel/sched/core.c:8871 folio_wait_bit_common+0x65c/0xb90 mm/filemap.c:1297 folio_put_wait_locked mm/filemap.c:1466 [inline] do_read_cache_folio+0xa8/0x544 mm/filemap.c:3536 read_cache_folio+0x68/0x84 mm/filemap.c:3586 read_mapping_folio include/linux/pagemap.h:761 [inline] read_part_sector+0xdc/0x2c8 block/partitions/core.c:717 adfspart_check_POWERTEC+0xcc/0x6f0 block/partitions/acorn.c:454 check_partition block/partitions/core.c:146 [inline] blk_add_partitions block/partitions/core.c:602 [inline] bdev_disk_changed+0x6e4/0x116c block/partitions/core.c:688 blkdev_get_whole+0x2a4/0x354 block/bdev.c:685 blkdev_get_by_dev+0x390/0x8f8 block/bdev.c:822 disk_scan_partitions+0x190/0x23c block/genhd.c:374 blkdev_common_ioctl+0x14e4/0x2694 block/ioctl.c:531 blkdev_ioctl+0x380/0xb48 block/ioctl.c:610 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+0x64/0x198 arch/arm64/kernel/syscall.c:193 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+0x190/0x194 arch/arm64/kernel/entry.S:591 Showing all locks held in the system: 1 lock held by rcu_tasks_kthre/12: #0: ffff800015d66ff0 (rcu_tasks.tasks_gp_mutex){+.+.}-{3:3}, at: rcu_tasks_one_gp+0x44/0xcb4 kernel/rcu/tasks.h:507 1 lock held by rcu_tasks_trace/13: #0: ffff800015d677f0 (rcu_tasks_trace.tasks_gp_mutex){+.+.}-{3:3}, at: rcu_tasks_one_gp+0x44/0xcb4 kernel/rcu/tasks.h:507 1 lock held by khungtaskd/28: #0: ffff800015d66e20 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire+0xc/0x44 include/linux/rcupdate.h:324 2 locks held by getty/5603: #0: ffff0000cd4f7098 (&tty->ldisc_sem){++++}-{0:0}, at: ldsem_down_read+0x3c/0x4c drivers/tty/tty_ldsem.c:340 #1: ffff80001a8502f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0x414/0x1210 drivers/tty/n_tty.c:2177 1 lock held by udevd/8693: #0: ffff0000cb3294c8 (&disk->open_mutex){+.+.}-{3:3}, at: blkdev_get_by_dev+0x12c/0x8f8 block/bdev.c:813 1 lock held by syz-executor.0/10726: #0: ffff0000cb3294c8 (&disk->open_mutex){+.+.}-{3:3}, at: blkdev_put+0xec/0x6e0 block/bdev.c:911 1 lock held by syz-executor.0/10738: #0: ffff0000cb3294c8 (&disk->open_mutex){+.+.}-{3:3}, at: blkdev_get_by_dev+0x12c/0x8f8 block/bdev.c:813 1 lock held by syz-executor.0/10856: #0: ffff0000cb3294c8 (&disk->open_mutex){+.+.}-{3:3}, at: blkdev_get_by_dev+0x12c/0x8f8 block/bdev.c:813 1 lock held by syz-executor.0/10857: #0: ffff0000cb3294c8 (&disk->open_mutex){+.+.}-{3:3}, at: blkdev_get_by_dev+0x12c/0x8f8 block/bdev.c:813 1 lock held by syz-executor.0/10919: #0: ffff0000cb3294c8 (&disk->open_mutex){+.+.}-{3:3}, at: blkdev_get_by_dev+0x12c/0x8f8 block/bdev.c:813 1 lock held by syz-executor.0/10920: #0: ffff0000cb3294c8 (&disk->open_mutex){+.+.}-{3:3}, at: blkdev_get_by_dev+0x12c/0x8f8 block/bdev.c:813 =============================================