INFO: task udevd:3413 blocked for more than 430 seconds. Not tainted 6.11.0-syzkaller-07337-g2004cef11ea0 #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:udevd state:D stack:0 pid:3413 tgid:3413 ppid:3095 flags:0x0000000d Call trace: __switch_to+0x204/0x39c arch/arm64/kernel/process.c:603 context_switch kernel/sched/core.c:5264 [inline] __schedule+0xaf4/0x2df8 kernel/sched/core.c:6607 __schedule_loop kernel/sched/core.c:6684 [inline] schedule+0xd0/0x304 kernel/sched/core.c:6699 schedule_preempt_disabled+0x18/0x2c kernel/sched/core.c:6756 __mutex_lock_common kernel/locking/mutex.c:684 [inline] __mutex_lock+0x4e8/0x840 kernel/locking/mutex.c:752 mutex_lock_nested+0x24/0x30 kernel/locking/mutex.c:804 bdev_open+0x2c4/0xa84 block/bdev.c:904 blkdev_open+0x24c/0x378 block/fops.c:631 do_dentry_open+0x4fc/0x1028 fs/open.c:958 vfs_open+0x5c/0x2fc fs/open.c:1088 do_open fs/namei.c:3774 [inline] path_openat+0x14fc/0x2588 fs/namei.c:3933 do_filp_open+0x16c/0x330 fs/namei.c:3960 do_sys_openat2+0x12c/0x160 fs/open.c:1415 do_sys_open fs/open.c:1430 [inline] __do_sys_openat fs/open.c:1446 [inline] __se_sys_openat fs/open.c:1441 [inline] __arm64_sys_openat+0x12c/0x1b8 fs/open.c:1441 __invoke_syscall arch/arm64/kernel/syscall.c:35 [inline] invoke_syscall+0x6c/0x258 arch/arm64/kernel/syscall.c:49 el0_svc_common.constprop.0+0xac/0x230 arch/arm64/kernel/syscall.c:132 do_el0_svc+0x40/0x58 arch/arm64/kernel/syscall.c:151 el0_svc+0x50/0x180 arch/arm64/kernel/entry-common.c:712 el0t_64_sync_handler+0x100/0x12c arch/arm64/kernel/entry-common.c:730 el0t_64_sync+0x190/0x194 arch/arm64/kernel/entry.S:598 INFO: task syz.0.4:3418 blocked for more than 430 seconds. Not tainted 6.11.0-syzkaller-07337-g2004cef11ea0 #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz.0.4 state:D stack:0 pid:3418 tgid:3418 ppid:3276 flags:0x00000009 Call trace: __switch_to+0x204/0x39c arch/arm64/kernel/process.c:603 context_switch kernel/sched/core.c:5264 [inline] __schedule+0xaf4/0x2df8 kernel/sched/core.c:6607 __schedule_loop kernel/sched/core.c:6684 [inline] schedule+0xd0/0x304 kernel/sched/core.c:6699 schedule_preempt_disabled+0x18/0x2c kernel/sched/core.c:6756 __mutex_lock_common kernel/locking/mutex.c:684 [inline] __mutex_lock+0x4e8/0x840 kernel/locking/mutex.c:752 mutex_lock_nested+0x24/0x30 kernel/locking/mutex.c:804 bdev_release+0x104/0x510 block/bdev.c:1087 blkdev_release+0x14/0x24 block/fops.c:639 __fput+0x2c4/0x944 fs/file_table.c:431 ____fput+0x14/0x20 fs/file_table.c:459 task_work_run+0x128/0x210 kernel/task_work.c:228 resume_user_mode_work include/linux/resume_user_mode.h:50 [inline] do_notify_resume+0x1d4/0x25c arch/arm64/kernel/entry-common.c:151 exit_to_user_mode_prepare arch/arm64/kernel/entry-common.c:169 [inline] exit_to_user_mode arch/arm64/kernel/entry-common.c:178 [inline] el0_svc+0x100/0x180 arch/arm64/kernel/entry-common.c:713 el0t_64_sync_handler+0x100/0x12c arch/arm64/kernel/entry-common.c:730 el0t_64_sync+0x190/0x194 arch/arm64/kernel/entry.S:598 INFO: task syz.0.4:3420 blocked for more than 430 seconds. Not tainted 6.11.0-syzkaller-07337-g2004cef11ea0 #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz.0.4 state:D stack:0 pid:3420 tgid:3418 ppid:3276 flags:0x00000009 Call trace: __switch_to+0x204/0x39c arch/arm64/kernel/process.c:603 context_switch kernel/sched/core.c:5264 [inline] __schedule+0xaf4/0x2df8 kernel/sched/core.c:6607 __schedule_loop kernel/sched/core.c:6684 [inline] schedule+0xd0/0x304 kernel/sched/core.c:6699 schedule_preempt_disabled+0x18/0x2c kernel/sched/core.c:6756 __mutex_lock_common kernel/locking/mutex.c:684 [inline] __mutex_lock+0x4e8/0x840 kernel/locking/mutex.c:752 mutex_lock_nested+0x24/0x30 kernel/locking/mutex.c:804 bdev_release+0x104/0x510 block/bdev.c:1087 blkdev_release+0x14/0x24 block/fops.c:639 __fput+0x2c4/0x944 fs/file_table.c:431 ____fput+0x14/0x20 fs/file_table.c:459 task_work_run+0x128/0x210 kernel/task_work.c:228 resume_user_mode_work include/linux/resume_user_mode.h:50 [inline] do_notify_resume+0x1d4/0x25c arch/arm64/kernel/entry-common.c:151 exit_to_user_mode_prepare arch/arm64/kernel/entry-common.c:169 [inline] exit_to_user_mode arch/arm64/kernel/entry-common.c:178 [inline] el0_svc+0x100/0x180 arch/arm64/kernel/entry-common.c:713 el0t_64_sync_handler+0x100/0x12c arch/arm64/kernel/entry-common.c:730 el0t_64_sync+0x190/0x194 arch/arm64/kernel/entry.S:598 INFO: task syz.0.4:3422 blocked for more than 430 seconds. Not tainted 6.11.0-syzkaller-07337-g2004cef11ea0 #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz.0.4 state:D stack:0 pid:3422 tgid:3418 ppid:3276 flags:0x00000009 Call trace: __switch_to+0x204/0x39c arch/arm64/kernel/process.c:603 context_switch kernel/sched/core.c:5264 [inline] __schedule+0xaf4/0x2df8 kernel/sched/core.c:6607 __schedule_loop kernel/sched/core.c:6684 [inline] schedule+0xd0/0x304 kernel/sched/core.c:6699 io_schedule+0xac/0x114 kernel/sched/core.c:7479 folio_wait_bit_common+0x2a8/0x6d0 mm/filemap.c:1307 folio_put_wait_locked mm/filemap.c:1471 [inline] do_read_cache_folio+0x204/0x42c mm/filemap.c:3778 read_cache_folio+0x44/0x6c mm/filemap.c:3828 read_mapping_folio include/linux/pagemap.h:915 [inline] read_part_sector+0xac/0x2b0 block/partitions/core.c:714 msdos_partition+0x100/0x1eb0 block/partitions/msdos.c:592 check_partition block/partitions/core.c:138 [inline] blk_add_partitions block/partitions/core.c:581 [inline] bdev_disk_changed+0x504/0xee4 block/partitions/core.c:685 blkdev_get_whole+0x144/0x1e4 block/bdev.c:707 bdev_open+0x1dc/0xa84 block/bdev.c:916 blkdev_open+0x24c/0x378 block/fops.c:631 do_dentry_open+0x4fc/0x1028 fs/open.c:958 vfs_open+0x5c/0x2fc fs/open.c:1088 do_open fs/namei.c:3774 [inline] path_openat+0x14fc/0x2588 fs/namei.c:3933 do_filp_open+0x16c/0x330 fs/namei.c:3960 do_sys_openat2+0x12c/0x160 fs/open.c:1415 do_sys_open fs/open.c:1430 [inline] __do_sys_openat fs/open.c:1446 [inline] __se_sys_openat fs/open.c:1441 [inline] __arm64_sys_openat+0x12c/0x1b8 fs/open.c:1441 __invoke_syscall arch/arm64/kernel/syscall.c:35 [inline] invoke_syscall+0x6c/0x258 arch/arm64/kernel/syscall.c:49 el0_svc_common.constprop.0+0xac/0x230 arch/arm64/kernel/syscall.c:132 do_el0_svc+0x40/0x58 arch/arm64/kernel/syscall.c:151 el0_svc+0x50/0x180 arch/arm64/kernel/entry-common.c:712 el0t_64_sync_handler+0x100/0x12c arch/arm64/kernel/entry-common.c:730 el0t_64_sync+0x190/0x194 arch/arm64/kernel/entry.S:598 Showing all locks held in the system: 1 lock held by khungtaskd/31: #0: ffff800086dc4ea0 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x44/0x2d4 kernel/locking/lockdep.c:6695 3 locks held by kworker/u8:2/54: #0: ffff00000d431148 ((wq_completion)events_unbound){+.+.}-{0:0}, at: process_one_work+0x6e4/0x18a8 kernel/workqueue.c:3204 #1: ffff80008d417ce0 ((linkwatch_work).work){+.+.}-{0:0}, at: process_one_work+0x708/0x18a8 kernel/workqueue.c:3204 #2: ffff800088150e68 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_lock+0x1c/0x28 net/core/rtnetlink.c:79 2 locks held by getty/3213: #0: ffff000017b350a0 (&tty->ldisc_sem){++++}-{0:0}, at: ldsem_down_read+0x3c/0x4c drivers/tty/tty_ldsem.c:340 #1: ffff80008ce6b2f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0x93c/0xe9c drivers/tty/n_tty.c:2211 1 lock held by udevd/3413: #0: ffff0000141ab4c8 (&disk->open_mutex){+.+.}-{3:3}, at: bdev_open+0x2c4/0xa84 block/bdev.c:904 1 lock held by syz.0.4/3418: #0: ffff0000141ab4c8 (&disk->open_mutex){+.+.}-{3:3}, at: bdev_release+0x104/0x510 block/bdev.c:1087 1 lock held by syz.0.4/3420: #0: ffff0000141ab4c8 (&disk->open_mutex){+.+.}-{3:3}, at: bdev_release+0x104/0x510 block/bdev.c:1087 1 lock held by syz.0.4/3422: #0: ffff0000141ab4c8 (&disk->open_mutex){+.+.}-{3:3}, at: bdev_open+0x2c4/0xa84 block/bdev.c:904 1 lock held by syz.0.139/3864: #0: ffff0000141ab4c8 (&disk->open_mutex){+.+.}-{3:3}, at: bdev_open+0x2c4/0xa84 block/bdev.c:904 1 lock held by syz.0.822/5674: #0: ffff800088150e68 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_lock+0x1c/0x28 net/core/rtnetlink.c:79 1 lock held by syz.1.824/5679: #0: ffff800088150e68 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_lock+0x1c/0x28 net/core/rtnetlink.c:79 =============================================