INFO: task kworker/0:1:12 blocked for more than 143 seconds. Not tainted 6.0.0-rc2-syzkaller-16440-g1c23f9e627a7 #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:kworker/0:1 state:D stack: 0 pid: 12 ppid: 2 flags:0x00000008 Workqueue: events linkwatch_event Call trace: __switch_to+0x180/0x28c arch/arm64/kernel/process.c:557 context_switch kernel/sched/core.c:5182 [inline] __schedule+0x414/0x570 kernel/sched/core.c:6494 schedule+0x64/0xa4 kernel/sched/core.c:6570 schedule_preempt_disabled+0x18/0x2c kernel/sched/core.c:6629 __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 rtnl_lock+0x20/0x2c net/core/rtnetlink.c:74 linkwatch_event+0x14/0xd8 net/core/link_watch.c:263 process_one_work+0x2d8/0x504 kernel/workqueue.c:2289 worker_thread+0x340/0x610 kernel/workqueue.c:2436 kthread+0x12c/0x158 kernel/kthread.c:376 ret_from_fork+0x10/0x20 INFO: task dhcpcd:2616 blocked for more than 143 seconds. Not tainted 6.0.0-rc2-syzkaller-16440-g1c23f9e627a7 #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:dhcpcd state:D stack: 0 pid: 2616 ppid: 2615 flags:0x00000000 Call trace: __switch_to+0x180/0x28c arch/arm64/kernel/process.c:557 context_switch kernel/sched/core.c:5182 [inline] __schedule+0x414/0x570 kernel/sched/core.c:6494 schedule+0x64/0xa4 kernel/sched/core.c:6570 schedule_preempt_disabled+0x18/0x2c kernel/sched/core.c:6629 __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 rtnl_lock+0x20/0x2c net/core/rtnetlink.c:74 devinet_ioctl+0x188/0xa10 net/ipv4/devinet.c:1070 inet_ioctl+0x1e8/0x3b0 net/ipv4/af_inet.c:968 sock_do_ioctl+0x68/0x194 net/socket.c:1169 sock_ioctl+0x388/0x5e4 net/socket.c:1286 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+0xd0/0x140 fs/ioctl.c:856 __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+0x58/0x150 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 kworker/0:0:25995 blocked for more than 143 seconds. Not tainted 6.0.0-rc2-syzkaller-16440-g1c23f9e627a7 #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:kworker/0:0 state:D stack: 0 pid:25995 ppid: 2 flags:0x00000008 Workqueue: events switchdev_deferred_process_work Call trace: __switch_to+0x180/0x28c arch/arm64/kernel/process.c:557 context_switch kernel/sched/core.c:5182 [inline] __schedule+0x414/0x570 kernel/sched/core.c:6494 schedule+0x64/0xa4 kernel/sched/core.c:6570 schedule_preempt_disabled+0x18/0x2c kernel/sched/core.c:6629 __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 rtnl_lock+0x20/0x2c net/core/rtnetlink.c:74 switchdev_deferred_process_work+0x14/0x28 net/switchdev/switchdev.c:75 process_one_work+0x2d8/0x504 kernel/workqueue.c:2289 worker_thread+0x340/0x610 kernel/workqueue.c:2436 kthread+0x12c/0x158 kernel/kthread.c:376 ret_from_fork+0x10/0x20 INFO: task syz-executor.0:23533 blocked for more than 143 seconds. Not tainted 6.0.0-rc2-syzkaller-16440-g1c23f9e627a7 #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz-executor.0 state:D stack: 0 pid:23533 ppid: 1 flags:0x00000009 Call trace: __switch_to+0x180/0x28c arch/arm64/kernel/process.c:557 context_switch kernel/sched/core.c:5182 [inline] __schedule+0x414/0x570 kernel/sched/core.c:6494 schedule+0x64/0xa4 kernel/sched/core.c:6570 schedule_preempt_disabled+0x18/0x2c kernel/sched/core.c:6629 __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 rtnl_lock net/core/rtnetlink.c:74 [inline] rtnetlink_rcv_msg+0x458/0x82c net/core/rtnetlink.c:6087 netlink_rcv_skb+0xe4/0x1d0 net/netlink/af_netlink.c:2501 rtnetlink_rcv+0x28/0x38 net/core/rtnetlink.c:6108 netlink_unicast_kernel+0xfc/0x1bc net/netlink/af_netlink.c:1319 netlink_unicast+0x164/0x238 net/netlink/af_netlink.c:1345 netlink_sendmsg+0x484/0x574 net/netlink/af_netlink.c:1921 sock_sendmsg_nosec net/socket.c:714 [inline] sock_sendmsg net/socket.c:734 [inline] __sys_sendto+0x1e4/0x280 net/socket.c:2117 __do_sys_sendto net/socket.c:2129 [inline] __se_sys_sendto net/socket.c:2125 [inline] __arm64_sys_sendto+0x30/0x44 net/socket.c:2125 __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+0x58/0x150 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 Showing all locks held in the system: 1 lock held by rcu_tasks_kthre/10: #0: ffff80000d4a3568 (rcu_tasks.tasks_gp_mutex){+.+.}-{3:3}, at: rcu_tasks_one_gp+0x3c/0x450 kernel/rcu/tasks.h:507 1 lock held by rcu_tasks_trace/11: #0: ffff80000d4a3bb8 (rcu_tasks_trace.tasks_gp_mutex){+.+.}-{3:3}, at: rcu_tasks_one_gp+0x3c/0x450 kernel/rcu/tasks.h:507 3 locks held by kworker/0:1/12: #0: ffff0000c0010738 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work+0x270/0x504 kernel/workqueue.c:2262 #1: ffff80000f28bd80 ((linkwatch_work).work){+.+.}-{0:0}, at: process_one_work+0x29c/0x504 kernel/workqueue.c:2264 #2: ffff80000d85a9a8 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_lock+0x20/0x2c net/core/rtnetlink.c:74 1 lock held by khungtaskd/26: #0: ffff80000d4a3440 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire+0x4/0x48 include/linux/rcupdate.h:279 1 lock held by dhcpcd/2616: #0: ffff80000d85a9a8 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_lock+0x20/0x2c net/core/rtnetlink.c:74 2 locks held by getty/2721: #0: ffff0000c9550098 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x28/0x58 drivers/tty/tty_ldisc.c:244 #1: ffff80000f6862f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0x19c/0x88c drivers/tty/n_tty.c:2177 4 locks held by kworker/u4:7/3019: #0: ffff0000c0174938 ((wq_completion)netns){+.+.}-{0:0}, at: process_one_work+0x270/0x504 kernel/workqueue.c:2262 #1: ffff800014993d80 (net_cleanup_work){+.+.}-{0:0}, at: process_one_work+0x29c/0x504 kernel/workqueue.c:2264 #2: ffff80000d858a98 (pernet_ops_rwsem){++++}-{3:3}, at: cleanup_net+0x68/0x628 net/core/net_namespace.c:557 #3: ffff80000d85a9a8 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_lock+0x20/0x2c net/core/rtnetlink.c:74 3 locks held by kworker/1:9/15015: #0: ffff0000c7430938 ((wq_completion)ipv6_addrconf){+.+.}-{0:0}, at: process_one_work+0x270/0x504 kernel/workqueue.c:2262 #1: ffff800013d1bd80 ((work_completion)(&(&net->ipv6.addr_chk_work)->work)){+.+.}-{0:0}, at: process_one_work+0x29c/0x504 kernel/workqueue.c:2264 #2: ffff80000d85a9a8 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_lock+0x20/0x2c net/core/rtnetlink.c:74 3 locks held by kworker/0:0/25995: #0: ffff0000c0010738 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work+0x270/0x504 kernel/workqueue.c:2262 #1: ffff800021413d80 (deferred_process_work){+.+.}-{0:0}, at: process_one_work+0x29c/0x504 kernel/workqueue.c:2264 #2: ffff80000d85a9a8 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_lock+0x20/0x2c net/core/rtnetlink.c:74 3 locks held by kworker/0:2/5961: #0: ffff0000c7430938 ((wq_completion)ipv6_addrconf){+.+.}-{0:0}, at: process_one_work+0x270/0x504 kernel/workqueue.c:2262 #1: ffff80001ad23d80 ((work_completion)(&(&net->ipv6.addr_chk_work)->work)){+.+.}-{0:0}, at: process_one_work+0x29c/0x504 kernel/workqueue.c:2264 #2: ffff80000d85a9a8 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_lock+0x20/0x2c net/core/rtnetlink.c:74 1 lock held by syz-executor.0/23533: #0: ffff80000d85a9a8 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_lock net/core/rtnetlink.c:74 [inline] #0: ffff80000d85a9a8 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg+0x458/0x82c net/core/rtnetlink.c:6087 1 lock held by syz-executor.0/23538: #0: ffff80000d85a9a8 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_lock net/core/rtnetlink.c:74 [inline] #0: ffff80000d85a9a8 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg+0x458/0x82c net/core/rtnetlink.c:6087 1 lock held by syz-executor.0/23542: #0: ffff80000d85a9a8 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_lock net/core/rtnetlink.c:74 [inline] #0: ffff80000d85a9a8 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg+0x458/0x82c net/core/rtnetlink.c:6087 =============================================