INFO: task udevd:11514 blocked for more than 144 seconds. Not tainted syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:udevd state:D stack:0 pid:11514 ppid:3938 flags:0x0000000d Call trace: __switch_to+0x2f4/0x550 arch/arm64/kernel/process.c:555 context_switch kernel/sched/core.c:5245 [inline] __schedule+0xdd0/0x1b0c kernel/sched/core.c:6562 schedule+0xc4/0x170 kernel/sched/core.c:6638 io_schedule+0x84/0x154 kernel/sched/core.c:8798 folio_wait_bit_common+0x584/0x9e4 mm/filemap.c:1324 folio_put_wait_locked mm/filemap.c:1493 [inline] do_read_cache_folio+0xa8/0x538 mm/filemap.c:3641 read_cache_folio+0x68/0x88 mm/filemap.c:3691 read_mapping_folio include/linux/pagemap.h:799 [inline] read_part_sector+0xdc/0x2b8 block/partitions/core.c:724 adfspart_check_POWERTEC+0xb0/0x6c0 block/partitions/acorn.c:454 check_partition block/partitions/core.c:146 [inline] blk_add_partitions block/partitions/core.c:609 [inline] bdev_disk_changed+0x6d8/0x11c4 block/partitions/core.c:695 blkdev_get_whole+0x29c/0x344 block/bdev.c:704 blkdev_get_by_dev+0x28c/0x8c4 block/bdev.c:841 blkdev_open+0x108/0x298 block/fops.c:500 do_dentry_open+0x72c/0xf98 fs/open.c:882 vfs_open+0x7c/0x90 fs/open.c:1015 do_open fs/namei.c:3634 [inline] path_openat+0x1f8c/0x26bc fs/namei.c:3791 do_filp_open+0x194/0x384 fs/namei.c:3818 do_sys_openat2+0x134/0x3f4 fs/open.c:1320 do_sys_open fs/open.c:1336 [inline] __do_sys_openat fs/open.c:1352 [inline] __se_sys_openat fs/open.c:1347 [inline] __arm64_sys_openat+0x118/0x14c fs/open.c:1347 __invoke_syscall arch/arm64/kernel/syscall.c:38 [inline] invoke_syscall+0x98/0x290 arch/arm64/kernel/syscall.c:52 el0_svc_common+0x138/0x258 arch/arm64/kernel/syscall.c:140 do_el0_svc+0x58/0x130 arch/arm64/kernel/syscall.c:204 el0_svc+0x58/0x128 arch/arm64/kernel/entry-common.c:637 el0t_64_sync_handler+0x84/0xf0 arch/arm64/kernel/entry-common.c:655 el0t_64_sync+0x18c/0x190 arch/arm64/kernel/entry.S:585 INFO: task udevd:11602 blocked for more than 144 seconds. Not tainted syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:udevd state:D stack:0 pid:11602 ppid:3938 flags:0x0000000d Call trace: __switch_to+0x2f4/0x550 arch/arm64/kernel/process.c:555 context_switch kernel/sched/core.c:5245 [inline] __schedule+0xdd0/0x1b0c kernel/sched/core.c:6562 schedule+0xc4/0x170 kernel/sched/core.c:6638 io_schedule+0x84/0x154 kernel/sched/core.c:8798 folio_wait_bit_common+0x584/0x9e4 mm/filemap.c:1324 folio_put_wait_locked mm/filemap.c:1493 [inline] do_read_cache_folio+0xa8/0x538 mm/filemap.c:3641 read_cache_folio+0x68/0x88 mm/filemap.c:3691 read_mapping_folio include/linux/pagemap.h:799 [inline] read_part_sector+0xdc/0x2b8 block/partitions/core.c:724 adfspart_check_POWERTEC+0xb0/0x6c0 block/partitions/acorn.c:454 check_partition block/partitions/core.c:146 [inline] blk_add_partitions block/partitions/core.c:609 [inline] bdev_disk_changed+0x6d8/0x11c4 block/partitions/core.c:695 blkdev_get_whole+0x29c/0x344 block/bdev.c:704 blkdev_get_by_dev+0x28c/0x8c4 block/bdev.c:841 blkdev_open+0x108/0x298 block/fops.c:500 do_dentry_open+0x72c/0xf98 fs/open.c:882 vfs_open+0x7c/0x90 fs/open.c:1015 do_open fs/namei.c:3634 [inline] path_openat+0x1f8c/0x26bc fs/namei.c:3791 do_filp_open+0x194/0x384 fs/namei.c:3818 do_sys_openat2+0x134/0x3f4 fs/open.c:1320 do_sys_open fs/open.c:1336 [inline] __do_sys_openat fs/open.c:1352 [inline] __se_sys_openat fs/open.c:1347 [inline] __arm64_sys_openat+0x118/0x14c fs/open.c:1347 __invoke_syscall arch/arm64/kernel/syscall.c:38 [inline] invoke_syscall+0x98/0x290 arch/arm64/kernel/syscall.c:52 el0_svc_common+0x138/0x258 arch/arm64/kernel/syscall.c:140 do_el0_svc+0x58/0x130 arch/arm64/kernel/syscall.c:204 el0_svc+0x58/0x128 arch/arm64/kernel/entry-common.c:637 el0t_64_sync_handler+0x84/0xf0 arch/arm64/kernel/entry-common.c:655 el0t_64_sync+0x18c/0x190 arch/arm64/kernel/entry.S:585 INFO: task udevd:11704 blocked for more than 144 seconds. Not tainted syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:udevd state:D stack:0 pid:11704 ppid:3938 flags:0x0000000d Call trace: __switch_to+0x2f4/0x550 arch/arm64/kernel/process.c:555 context_switch kernel/sched/core.c:5245 [inline] __schedule+0xdd0/0x1b0c kernel/sched/core.c:6562 schedule+0xc4/0x170 kernel/sched/core.c:6638 io_schedule+0x84/0x154 kernel/sched/core.c:8798 folio_wait_bit_common+0x584/0x9e4 mm/filemap.c:1324 folio_put_wait_locked mm/filemap.c:1493 [inline] do_read_cache_folio+0xa8/0x538 mm/filemap.c:3641 read_cache_folio+0x68/0x88 mm/filemap.c:3691 read_mapping_folio include/linux/pagemap.h:799 [inline] read_part_sector+0xdc/0x2b8 block/partitions/core.c:724 adfspart_check_POWERTEC+0xb0/0x6c0 block/partitions/acorn.c:454 check_partition block/partitions/core.c:146 [inline] blk_add_partitions block/partitions/core.c:609 [inline] bdev_disk_changed+0x6d8/0x11c4 block/partitions/core.c:695 blkdev_get_whole+0x29c/0x344 block/bdev.c:704 blkdev_get_by_dev+0x28c/0x8c4 block/bdev.c:841 blkdev_open+0x108/0x298 block/fops.c:500 do_dentry_open+0x72c/0xf98 fs/open.c:882 vfs_open+0x7c/0x90 fs/open.c:1015 do_open fs/namei.c:3634 [inline] path_openat+0x1f8c/0x26bc fs/namei.c:3791 do_filp_open+0x194/0x384 fs/namei.c:3818 do_sys_openat2+0x134/0x3f4 fs/open.c:1320 do_sys_open fs/open.c:1336 [inline] __do_sys_openat fs/open.c:1352 [inline] __se_sys_openat fs/open.c:1347 [inline] __arm64_sys_openat+0x118/0x14c fs/open.c:1347 __invoke_syscall arch/arm64/kernel/syscall.c:38 [inline] invoke_syscall+0x98/0x290 arch/arm64/kernel/syscall.c:52 el0_svc_common+0x138/0x258 arch/arm64/kernel/syscall.c:140 do_el0_svc+0x58/0x130 arch/arm64/kernel/syscall.c:204 el0_svc+0x58/0x128 arch/arm64/kernel/entry-common.c:637 el0t_64_sync_handler+0x84/0xf0 arch/arm64/kernel/entry-common.c:655 el0t_64_sync+0x18c/0x190 arch/arm64/kernel/entry.S:585 INFO: task udevd:12188 blocked for more than 144 seconds. Not tainted syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:udevd state:D stack:0 pid:12188 ppid:3938 flags:0x0000000d Call trace: __switch_to+0x2f4/0x550 arch/arm64/kernel/process.c:555 context_switch kernel/sched/core.c:5245 [inline] __schedule+0xdd0/0x1b0c kernel/sched/core.c:6562 schedule+0xc4/0x170 kernel/sched/core.c:6638 io_schedule+0x84/0x154 kernel/sched/core.c:8798 folio_wait_bit_common+0x584/0x9e4 mm/filemap.c:1324 folio_put_wait_locked mm/filemap.c:1493 [inline] do_read_cache_folio+0xa8/0x538 mm/filemap.c:3641 read_cache_folio+0x68/0x88 mm/filemap.c:3691 read_mapping_folio include/linux/pagemap.h:799 [inline] read_part_sector+0xdc/0x2b8 block/partitions/core.c:724 adfspart_check_POWERTEC+0xb0/0x6c0 block/partitions/acorn.c:454 check_partition block/partitions/core.c:146 [inline] blk_add_partitions block/partitions/core.c:609 [inline] bdev_disk_changed+0x6d8/0x11c4 block/partitions/core.c:695 blkdev_get_whole+0x29c/0x344 block/bdev.c:704 blkdev_get_by_dev+0x28c/0x8c4 block/bdev.c:841 blkdev_open+0x108/0x298 block/fops.c:500 do_dentry_open+0x72c/0xf98 fs/open.c:882 vfs_open+0x7c/0x90 fs/open.c:1015 do_open fs/namei.c:3634 [inline] path_openat+0x1f8c/0x26bc fs/namei.c:3791 do_filp_open+0x194/0x384 fs/namei.c:3818 do_sys_openat2+0x134/0x3f4 fs/open.c:1320 do_sys_open fs/open.c:1336 [inline] __do_sys_openat fs/open.c:1352 [inline] __se_sys_openat fs/open.c:1347 [inline] __arm64_sys_openat+0x118/0x14c fs/open.c:1347 __invoke_syscall arch/arm64/kernel/syscall.c:38 [inline] invoke_syscall+0x98/0x290 arch/arm64/kernel/syscall.c:52 el0_svc_common+0x138/0x258 arch/arm64/kernel/syscall.c:140 do_el0_svc+0x58/0x130 arch/arm64/kernel/syscall.c:204 el0_svc+0x58/0x128 arch/arm64/kernel/entry-common.c:637 el0t_64_sync_handler+0x84/0xf0 arch/arm64/kernel/entry-common.c:655 el0t_64_sync+0x18c/0x190 arch/arm64/kernel/entry.S:585 Showing all locks held in the system: 1 lock held by rcu_tasks_kthre/12: #0: ffff800015417df0 (rcu_tasks.tasks_gp_mutex){+.+.}-{3:3}, at: rcu_tasks_one_gp+0x40/0xbb4 kernel/rcu/tasks.h:517 1 lock held by rcu_tasks_trace/13: #0: ffff800015418610 (rcu_tasks_trace.tasks_gp_mutex){+.+.}-{3:3}, at: rcu_tasks_one_gp+0x40/0xbb4 kernel/rcu/tasks.h:517 1 lock held by khungtaskd/28: #0: ffff800015417480 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire+0xc/0x44 include/linux/rcupdate.h:349 2 locks held by getty/4082: #0: ffff0000d8de0098 (&tty->ldisc_sem){++++}-{0:0}, at: ldsem_down_read+0x3c/0x4c drivers/tty/tty_ldsem.c:340 #1: ffff80001df832f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0x2ec/0xfa0 drivers/tty/n_tty.c:2198 3 locks held by kworker/0:8/5499: #0: ffff0000c0020938 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work+0x6b8/0x13a4 kernel/workqueue.c:2265 #1: ffff800022ad7c20 ((work_completion)(&data->fib_event_work)){+.+.}-{0:0}, at: process_one_work+0x6fc/0x13a4 kernel/workqueue.c:2267 #2: ffff0000de7ab240 (&data->fib_lock){+.+.}-{3:3}, at: nsim_fib_event_work+0x1d0/0x27cc drivers/net/netdevsim/fib.c:1491 1 lock held by udevd/11514: #0: ffff0000cf3b34c8 (&disk->open_mutex){+.+.}-{3:3}, at: blkdev_get_by_dev+0x118/0x8c4 block/bdev.c:832 1 lock held by udevd/11602: #0: ffff0000cee264c8 (&disk->open_mutex){+.+.}-{3:3}, at: blkdev_get_by_dev+0x118/0x8c4 block/bdev.c:832 1 lock held by udevd/11704: #0: ffff0000cf3b04c8 (&disk->open_mutex){+.+.}-{3:3}, at: blkdev_get_by_dev+0x118/0x8c4 block/bdev.c:832 1 lock held by udevd/12188: #0: ffff0000cf4434c8 (&disk->open_mutex){+.+.}-{3:3}, at: blkdev_get_by_dev+0x118/0x8c4 block/bdev.c:832 1 lock held by udevd/12189: #0: ffff0000cf5204c8 (&disk->open_mutex){+.+.}-{3:3}, at: blkdev_get_by_dev+0x118/0x8c4 block/bdev.c:832 3 locks held by syz-executor/19237: #0: ffff8000178b6008 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_lock net/core/rtnetlink.c:74 [inline] #0: ffff8000178b6008 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg+0x650/0xcdc net/core/rtnetlink.c:6155 #1: ffff0000f39ad3e8 (&wg->device_update_lock){+.+.}-{3:3}, at: wg_open+0x204/0x41c drivers/net/wireguard/device.c:49 #2: ffff80001541d138 (rcu_state.exp_mutex){+.+.}-{3:3}, at: exp_funnel_lock kernel/rcu/tree_exp.h:291 [inline] #2: ffff80001541d138 (rcu_state.exp_mutex){+.+.}-{3:3}, at: synchronize_rcu_expedited+0x3fc/0x77c kernel/rcu/tree_exp.h:962 =============================================