INFO: task udevd:3066 blocked for more than 143 seconds. Not tainted 5.19.0-rc8-syzkaller-01618-g680fb5b009e8 #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:udevd state:D stack: 0 pid: 3066 ppid: 2553 flags:0x00000000 Call trace: __switch_to+0x180/0x28c arch/arm64/kernel/process.c:557 context_switch kernel/sched/core.c:5146 [inline] __schedule+0x414/0x570 kernel/sched/core.c:6458 schedule+0x6c/0xac kernel/sched/core.c:6530 io_schedule+0x38/0x10c kernel/sched/core.c:8645 folio_wait_bit_common+0x4ac/0xa6c mm/filemap.c:1324 folio_wait_bit mm/filemap.c:1473 [inline] folio_wait_locked include/linux/pagemap.h:1028 [inline] do_read_cache_folio+0x3b4/0x828 mm/filemap.c:3530 do_read_cache_page mm/filemap.c:3602 [inline] read_cache_page+0x40/0x178 mm/filemap.c:3611 read_mapping_page include/linux/pagemap.h:759 [inline] read_part_sector+0x60/0x3b8 block/partitions/core.c:715 adfspart_check_ICS+0x4c/0x530 block/partitions/acorn.c:360 check_partition block/partitions/core.c:147 [inline] blk_add_partitions block/partitions/core.c:600 [inline] bdev_disk_changed+0x340/0x63c block/partitions/core.c:686 blkdev_get_whole+0x1b0/0x1f8 block/bdev.c:686 blkdev_get_by_dev+0x178/0x2fc block/bdev.c:823 blkdev_open+0x84/0xd8 block/fops.c:481 do_dentry_open+0x318/0x624 fs/open.c:848 vfs_open+0x38/0x48 fs/open.c:981 do_open fs/namei.c:3520 [inline] path_openat+0xe70/0x1200 fs/namei.c:3653 do_filp_open+0xcc/0x1a4 fs/namei.c:3680 do_sys_openat2+0xb8/0x22c fs/open.c:1278 do_sys_open fs/open.c:1294 [inline] __do_sys_openat fs/open.c:1310 [inline] __se_sys_openat fs/open.c:1305 [inline] __arm64_sys_openat+0xb0/0xe0 fs/open.c:1305 __invoke_syscall arch/arm64/kernel/syscall.c:38 [inline] invoke_syscall arch/arm64/kernel/syscall.c:52 [inline] el0_svc_common+0x138/0x220 arch/arm64/kernel/syscall.c:142 do_el0_svc+0x48/0x154 arch/arm64/kernel/syscall.c:206 el0_svc+0x58/0x14c arch/arm64/kernel/entry-common.c:624 el0t_64_sync_handler+0x84/0xf0 arch/arm64/kernel/entry-common.c:642 el0t_64_sync+0x18c/0x190 INFO: task syz-executor.4:5731 blocked for more than 143 seconds. Not tainted 5.19.0-rc8-syzkaller-01618-g680fb5b009e8 #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz-executor.4 state:D stack: 0 pid: 5731 ppid: 3053 flags:0x00000001 Call trace: __switch_to+0x180/0x28c arch/arm64/kernel/process.c:557 context_switch kernel/sched/core.c:5146 [inline] __schedule+0x414/0x570 kernel/sched/core.c:6458 schedule+0x6c/0xac kernel/sched/core.c:6530 schedule_preempt_disabled+0x18/0x2c kernel/sched/core.c:6589 __mutex_lock_common+0x74c/0xc28 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+0x78/0x270 block/bdev.c:912 blkdev_close+0x24/0x38 block/fops.c:495 __fput+0x198/0x3bc fs/file_table.c:317 ____fput+0x20/0x30 fs/file_table.c:350 task_work_run+0xc4/0x208 kernel/task_work.c:177 resume_user_mode_work include/linux/resume_user_mode.h:49 [inline] do_notify_resume+0x174/0x1d0 arch/arm64/kernel/signal.c:1117 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/0x14c arch/arm64/kernel/entry-common.c:625 el0t_64_sync_handler+0x84/0xf0 arch/arm64/kernel/entry-common.c:642 el0t_64_sync+0x18c/0x190 Showing all locks held in the system: 1 lock held by khungtaskd/26: #0: ffff80000d433140 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire+0x4/0x48 include/linux/rcupdate.h:268 2 locks held by getty/2705: #0: ffff0000c7536098 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x28/0x58 drivers/tty/tty_ldisc.c:244 #1: ffff80000ffa62e8 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0x19c/0x878 drivers/tty/n_tty.c:2124 1 lock held by udevd/3066: #0: ffff0000c594bd18 (&disk->open_mutex){+.+.}-{3:3}, at: blkdev_get_by_dev+0xfc/0x2fc block/bdev.c:814 1 lock held by syz-executor.4/5731: #0: ffff0000c594bd18 (&disk->open_mutex){+.+.}-{3:3}, at: blkdev_put+0x78/0x270 block/bdev.c:912 1 lock held by syz-executor.4/5869: #0: ffff0000c594bd18 (&disk->open_mutex){+.+.}-{3:3}, at: blkdev_get_by_dev+0xfc/0x2fc block/bdev.c:814 1 lock held by syz-executor.4/5870: #0: ffff0000c594bd18 (&disk->open_mutex){+.+.}-{3:3}, at: blkdev_get_by_dev+0xfc/0x2fc block/bdev.c:814 1 lock held by syz-executor.4/5956: #0: ffff0000c594bd18 (&disk->open_mutex){+.+.}-{3:3}, at: blkdev_get_by_dev+0xfc/0x2fc block/bdev.c:814 1 lock held by syz-executor.4/5957: #0: ffff0000c594bd18 (&disk->open_mutex){+.+.}-{3:3}, at: blkdev_get_by_dev+0xfc/0x2fc block/bdev.c:814 =============================================