INFO: task syz-executor.1:31533 blocked for more than 430 seconds. Tainted: G W 6.10.0-rc3-syzkaller-00249-gb5beaa44747b #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz-executor.1 state:D stack:0 pid:31533 tgid:31529 ppid:21929 flags:0x00000005 Call trace: __switch_to+0x1c8/0x2a0 arch/arm64/kernel/process.c:553 context_switch kernel/sched/core.c:5408 [inline] __schedule+0xad4/0x2b18 kernel/sched/core.c:6745 __schedule_loop kernel/sched/core.c:6822 [inline] schedule+0xd0/0x304 kernel/sched/core.c:6837 schedule_preempt_disabled+0x18/0x2c kernel/sched/core.c:6894 __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+0x2c4/0xa48 block/bdev.c:897 blkdev_open+0x114/0x194 block/fops.c:615 do_dentry_open+0x510/0x12e8 fs/open.c:955 vfs_open+0x54/0x8c fs/open.c:1089 do_open fs/namei.c:3650 [inline] path_openat+0x14a0/0x20ec fs/namei.c:3807 do_filp_open+0x16c/0x330 fs/namei.c:3834 do_sys_openat2+0x12c/0x160 fs/open.c:1405 do_sys_open fs/open.c:1420 [inline] __do_sys_openat fs/open.c:1436 [inline] __se_sys_openat fs/open.c:1431 [inline] __arm64_sys_openat+0x12c/0x1b8 fs/open.c:1431 __invoke_syscall arch/arm64/kernel/syscall.c:34 [inline] invoke_syscall+0x6c/0x25c arch/arm64/kernel/syscall.c:48 el0_svc_common.constprop.0+0xac/0x230 arch/arm64/kernel/syscall.c:133 do_el0_svc+0x40/0x58 arch/arm64/kernel/syscall.c:152 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: ffff800086a2e100 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x44/0x2d4 kernel/locking/lockdep.c:6608 2 locks held by dhcpcd/3048: #0: ffff800087cc6b68 (vlan_ioctl_mutex){+.+.}-{3:3}, at: sock_ioctl+0x41c/0x5dc net/socket.c:1303 #1: ffff800087cedca8 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_lock+0x1c/0x28 net/core/rtnetlink.c:79 2 locks held by getty/3136: #0: ffff00000f07c0a0 (&tty->ldisc_sem){++++}-{0:0}, at: ldsem_down_read+0x3c/0x4c drivers/tty/tty_ldsem.c:340 #1: ffff80008988d2f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0x93c/0xe9c drivers/tty/n_tty.c:2211 1 lock held by sshd/3194: 3 locks held by kworker/1:2/22227: #0: ffff000009c28948 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work+0x6dc/0x18a0 kernel/workqueue.c:3206 #1: ffff80008d347ce0 ((linkwatch_work).work){+.+.}-{0:0}, at: process_one_work+0x704/0x18a0 kernel/workqueue.c:3206 #2: ffff800087cedca8 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_lock+0x1c/0x28 net/core/rtnetlink.c:79 4 locks held by kworker/u8:5/24477: #0: ffff00000a152148 ((wq_completion)netns){+.+.}-{0:0}, at: process_one_work+0x6dc/0x18a0 kernel/workqueue.c:3206 #1: ffff80008e487ce0 (net_cleanup_work){+.+.}-{0:0}, at: process_one_work+0x704/0x18a0 kernel/workqueue.c:3206 #2: ffff800087cd9ab0 (pernet_ops_rwsem){++++}-{3:3}, at: cleanup_net+0xcc/0x8d0 net/core/net_namespace.c:594 #3: ffff800087cedca8 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_lock+0x1c/0x28 net/core/rtnetlink.c:79 3 locks held by kworker/u8:6/29643: #0: ffff00001307e948 ((wq_completion)ipv6_addrconf){+.+.}-{0:0}, at: process_one_work+0x6dc/0x18a0 kernel/workqueue.c:3206 #1: ffff80008d6f7ce0 ((work_completion)(&(&ifa->dad_work)->work)){+.+.}-{0:0}, at: process_one_work+0x704/0x18a0 kernel/workqueue.c:3206 #2: ffff800087cedca8 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_lock+0x1c/0x28 net/core/rtnetlink.c:79 1 lock held by udevd/31507: #0: ffff000010bae4c8 (&disk->open_mutex){+.+.}-{3:3}, at: bdev_open+0x2c4/0xa48 block/bdev.c:897 1 lock held by syz-executor.1/31529: #0: ffff000010bae4c8 (&disk->open_mutex){+.+.}-{3:3}, at: bdev_release+0x104/0x510 block/bdev.c:1080 1 lock held by syz-executor.1/31530: #0: ffff000010bae4c8 (&disk->open_mutex){+.+.}-{3:3}, at: bdev_release+0x104/0x510 block/bdev.c:1080 1 lock held by syz-executor.1/31533: #0: ffff000010bae4c8 (&disk->open_mutex){+.+.}-{3:3}, at: bdev_open+0x2c4/0xa48 block/bdev.c:897 1 lock held by syz-executor.0/334: #0: ffff800087cedca8 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_lock net/core/rtnetlink.c:79 [inline] #0: ffff800087cedca8 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg+0x2a8/0x8cc net/core/rtnetlink.c:6632 1 lock held by syz-executor.1/468: #0: ffff800087cedca8 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_lock net/core/rtnetlink.c:79 [inline] #0: ffff800087cedca8 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg+0x2a8/0x8cc net/core/rtnetlink.c:6632 =============================================