INFO: task kworker/0:1:9 blocked for more than 143 seconds. Tainted: G B 6.8.0-rc6-syzkaller-g381f163531d8 #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:kworker/0:1 state:D stack:0 pid:9 tgid:9 ppid:2 flags:0x00000008 Workqueue: events switchdev_deferred_process_work Call trace: __switch_to+0x314/0x560 arch/arm64/kernel/process.c:553 context_switch kernel/sched/core.c:5400 [inline] __schedule+0x1498/0x24b4 kernel/sched/core.c:6727 __schedule_loop kernel/sched/core.c:6802 [inline] schedule+0xb8/0x19c kernel/sched/core.c:6817 schedule_preempt_disabled+0x18/0x2c kernel/sched/core.c:6874 __mutex_lock_common+0xbd8/0x21a0 kernel/locking/mutex.c:684 __mutex_lock kernel/locking/mutex.c:752 [inline] mutex_lock_nested+0x2c/0x38 kernel/locking/mutex.c:804 rtnl_lock+0x20/0x2c net/core/rtnetlink.c:79 switchdev_deferred_process_work+0x14/0x28 net/switchdev/switchdev.c:104 process_one_work+0x694/0x1204 kernel/workqueue.c:2633 process_scheduled_works kernel/workqueue.c:2706 [inline] worker_thread+0x938/0xef4 kernel/workqueue.c:2787 kthread+0x288/0x310 kernel/kthread.c:388 ret_from_fork+0x10/0x20 arch/arm64/kernel/entry.S:860 INFO: task kworker/1:2:1390 blocked for more than 143 seconds. Tainted: G B 6.8.0-rc6-syzkaller-g381f163531d8 #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:kworker/1:2 state:D stack:0 pid:1390 tgid:1390 ppid:2 flags:0x00000008 Workqueue: ipv6_addrconf addrconf_dad_work Call trace: __switch_to+0x314/0x560 arch/arm64/kernel/process.c:553 context_switch kernel/sched/core.c:5400 [inline] __schedule+0x1498/0x24b4 kernel/sched/core.c:6727 __schedule_loop kernel/sched/core.c:6802 [inline] schedule+0xb8/0x19c kernel/sched/core.c:6817 schedule_preempt_disabled+0x18/0x2c kernel/sched/core.c:6874 __mutex_lock_common+0xbd8/0x21a0 kernel/locking/mutex.c:684 __mutex_lock kernel/locking/mutex.c:752 [inline] mutex_lock_nested+0x2c/0x38 kernel/locking/mutex.c:804 rtnl_lock+0x20/0x2c net/core/rtnetlink.c:79 addrconf_dad_work+0xcc/0x1350 net/ipv6/addrconf.c:4144 process_one_work+0x694/0x1204 kernel/workqueue.c:2633 process_scheduled_works kernel/workqueue.c:2706 [inline] worker_thread+0x938/0xef4 kernel/workqueue.c:2787 kthread+0x288/0x310 kernel/kthread.c:388 ret_from_fork+0x10/0x20 arch/arm64/kernel/entry.S:860 INFO: task dhcpcd:5835 blocked for more than 143 seconds. Tainted: G B 6.8.0-rc6-syzkaller-g381f163531d8 #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:dhcpcd state:D stack:0 pid:5835 tgid:5835 ppid:5834 flags:0x0000000c Call trace: __switch_to+0x314/0x560 arch/arm64/kernel/process.c:553 context_switch kernel/sched/core.c:5400 [inline] __schedule+0x1498/0x24b4 kernel/sched/core.c:6727 __schedule_loop kernel/sched/core.c:6802 [inline] schedule+0xb8/0x19c kernel/sched/core.c:6817 schedule_preempt_disabled+0x18/0x2c kernel/sched/core.c:6874 __mutex_lock_common+0xbd8/0x21a0 kernel/locking/mutex.c:684 __mutex_lock kernel/locking/mutex.c:752 [inline] mutex_lock_nested+0x2c/0x38 kernel/locking/mutex.c:804 rtnl_lock net/core/rtnetlink.c:79 [inline] rtnetlink_rcv_msg+0x704/0xdbc net/core/rtnetlink.c:6615 netlink_rcv_skb+0x214/0x3c4 net/netlink/af_netlink.c:2543 rtnetlink_rcv+0x28/0x38 net/core/rtnetlink.c:6636 netlink_unicast_kernel net/netlink/af_netlink.c:1341 [inline] netlink_unicast+0x65c/0x898 net/netlink/af_netlink.c:1367 netlink_sendmsg+0x83c/0xb20 net/netlink/af_netlink.c:1908 sock_sendmsg_nosec net/socket.c:730 [inline] __sock_sendmsg net/socket.c:745 [inline] ____sys_sendmsg+0x56c/0x840 net/socket.c:2584 ___sys_sendmsg net/socket.c:2638 [inline] __sys_sendmsg+0x26c/0x33c net/socket.c:2667 __do_sys_sendmsg net/socket.c:2676 [inline] __se_sys_sendmsg net/socket.c:2674 [inline] __arm64_sys_sendmsg+0x80/0x94 net/socket.c:2674 __invoke_syscall arch/arm64/kernel/syscall.c:34 [inline] invoke_syscall+0x98/0x2b8 arch/arm64/kernel/syscall.c:48 el0_svc_common+0x130/0x23c arch/arm64/kernel/syscall.c:133 do_el0_svc+0x48/0x58 arch/arm64/kernel/syscall.c:152 el0_svc+0x54/0x168 arch/arm64/kernel/entry-common.c:712 el0t_64_sync_handler+0x84/0xfc arch/arm64/kernel/entry-common.c:730 el0t_64_sync+0x190/0x194 arch/arm64/kernel/entry.S:598 INFO: task kworker/0:3:6272 blocked for more than 143 seconds. Tainted: G B 6.8.0-rc6-syzkaller-g381f163531d8 #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:kworker/0:3 state:D stack:0 pid:6272 tgid:6272 ppid:2 flags:0x00000008 Workqueue: ipv6_addrconf addrconf_dad_work Call trace: __switch_to+0x314/0x560 arch/arm64/kernel/process.c:553 context_switch kernel/sched/core.c:5400 [inline] __schedule+0x1498/0x24b4 kernel/sched/core.c:6727 __schedule_loop kernel/sched/core.c:6802 [inline] schedule+0xb8/0x19c kernel/sched/core.c:6817 schedule_preempt_disabled+0x18/0x2c kernel/sched/core.c:6874 __mutex_lock_common+0xbd8/0x21a0 kernel/locking/mutex.c:684 __mutex_lock kernel/locking/mutex.c:752 [inline] mutex_lock_nested+0x2c/0x38 kernel/locking/mutex.c:804 rtnl_lock+0x20/0x2c net/core/rtnetlink.c:79 addrconf_dad_work+0xcc/0x1350 net/ipv6/addrconf.c:4144 process_one_work+0x694/0x1204 kernel/workqueue.c:2633 process_scheduled_works kernel/workqueue.c:2706 [inline] worker_thread+0x938/0xef4 kernel/workqueue.c:2787 kthread+0x288/0x310 kernel/kthread.c:388 ret_from_fork+0x10/0x20 arch/arm64/kernel/entry.S:860 INFO: task kworker/0:4:6274 blocked for more than 143 seconds. Tainted: G B 6.8.0-rc6-syzkaller-g381f163531d8 #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:kworker/0:4 state:D stack:0 pid:6274 tgid:6274 ppid:2 flags:0x00000008 Workqueue: events linkwatch_event Call trace: __switch_to+0x314/0x560 arch/arm64/kernel/process.c:553 context_switch kernel/sched/core.c:5400 [inline] __schedule+0x1498/0x24b4 kernel/sched/core.c:6727 __schedule_loop kernel/sched/core.c:6802 [inline] schedule+0xb8/0x19c kernel/sched/core.c:6817 schedule_preempt_disabled+0x18/0x2c kernel/sched/core.c:6874 __mutex_lock_common+0xbd8/0x21a0 kernel/locking/mutex.c:684 __mutex_lock kernel/locking/mutex.c:752 [inline] mutex_lock_nested+0x2c/0x38 kernel/locking/mutex.c:804 rtnl_lock+0x20/0x2c net/core/rtnetlink.c:79 linkwatch_event+0x14/0x68 net/core/link_watch.c:281 process_one_work+0x694/0x1204 kernel/workqueue.c:2633 process_scheduled_works kernel/workqueue.c:2706 [inline] worker_thread+0x938/0xef4 kernel/workqueue.c:2787 kthread+0x288/0x310 kernel/kthread.c:388 ret_from_fork+0x10/0x20 arch/arm64/kernel/entry.S:860 INFO: task syz-executor.4:24530 blocked for more than 143 seconds. Tainted: G B 6.8.0-rc6-syzkaller-g381f163531d8 #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz-executor.4 state:D stack:0 pid:24530 tgid:24530 ppid:1 flags:0x00000005 Call trace: __switch_to+0x314/0x560 arch/arm64/kernel/process.c:553 context_switch kernel/sched/core.c:5400 [inline] __schedule+0x1498/0x24b4 kernel/sched/core.c:6727 __schedule_loop kernel/sched/core.c:6802 [inline] schedule+0xb8/0x19c kernel/sched/core.c:6817 schedule_preempt_disabled+0x18/0x2c kernel/sched/core.c:6874 __mutex_lock_common+0xbd8/0x21a0 kernel/locking/mutex.c:684 __mutex_lock kernel/locking/mutex.c:752 [inline] mutex_lock_nested+0x2c/0x38 kernel/locking/mutex.c:804 new_device_store+0x170/0x704 drivers/net/netdevsim/bus.c:166 bus_attr_store+0x80/0xa4 drivers/base/bus.c:170 sysfs_kf_write+0x200/0x280 fs/sysfs/file.c:136 kernfs_fop_write_iter+0x334/0x48c fs/kernfs/file.c:334 call_write_iter include/linux/fs.h:2087 [inline] new_sync_write fs/read_write.c:497 [inline] vfs_write+0x968/0xc3c fs/read_write.c:590 ksys_write+0x15c/0x26c fs/read_write.c:643 __do_sys_write fs/read_write.c:655 [inline] __se_sys_write fs/read_write.c:652 [inline] __arm64_sys_write+0x7c/0x90 fs/read_write.c:652 __invoke_syscall arch/arm64/kernel/syscall.c:34 [inline] invoke_syscall+0x98/0x2b8 arch/arm64/kernel/syscall.c:48 el0_svc_common+0x130/0x23c arch/arm64/kernel/syscall.c:133 do_el0_svc+0x48/0x58 arch/arm64/kernel/syscall.c:152 el0_svc+0x54/0x168 arch/arm64/kernel/entry-common.c:712 el0t_64_sync_handler+0x84/0xfc arch/arm64/kernel/entry-common.c:730 el0t_64_sync+0x190/0x194 arch/arm64/kernel/entry.S:598 INFO: task syz-executor.3:24727 blocked for more than 143 seconds. Tainted: G B 6.8.0-rc6-syzkaller-g381f163531d8 #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz-executor.3 state:D stack:0 pid:24727 tgid:24727 ppid:1 flags:0x0000000d Call trace: __switch_to+0x314/0x560 arch/arm64/kernel/process.c:553 context_switch kernel/sched/core.c:5400 [inline] __schedule+0x1498/0x24b4 kernel/sched/core.c:6727 __schedule_loop kernel/sched/core.c:6802 [inline] schedule+0xb8/0x19c kernel/sched/core.c:6817 schedule_preempt_disabled+0x18/0x2c kernel/sched/core.c:6874 __mutex_lock_common+0xbd8/0x21a0 kernel/locking/mutex.c:684 __mutex_lock kernel/locking/mutex.c:752 [inline] mutex_lock_nested+0x2c/0x38 kernel/locking/mutex.c:804 del_device_store+0xec/0x39c drivers/net/netdevsim/bus.c:216 bus_attr_store+0x80/0xa4 drivers/base/bus.c:170 sysfs_kf_write+0x200/0x280 fs/sysfs/file.c:136 kernfs_fop_write_iter+0x334/0x48c fs/kernfs/file.c:334 call_write_iter include/linux/fs.h:2087 [inline] new_sync_write fs/read_write.c:497 [inline] vfs_write+0x968/0xc3c fs/read_write.c:590 ksys_write+0x15c/0x26c fs/read_write.c:643 __do_sys_write fs/read_write.c:655 [inline] __se_sys_write fs/read_write.c:652 [inline] __arm64_sys_write+0x7c/0x90 fs/read_write.c:652 __invoke_syscall arch/arm64/kernel/syscall.c:34 [inline] invoke_syscall+0x98/0x2b8 arch/arm64/kernel/syscall.c:48 el0_svc_common+0x130/0x23c arch/arm64/kernel/syscall.c:133 do_el0_svc+0x48/0x58 arch/arm64/kernel/syscall.c:152 el0_svc+0x54/0x168 arch/arm64/kernel/entry-common.c:712 el0t_64_sync_handler+0x84/0xfc arch/arm64/kernel/entry-common.c:730 el0t_64_sync+0x190/0x194 arch/arm64/kernel/entry.S:598 INFO: task syz-executor.2:24758 blocked for more than 143 seconds. Tainted: G B 6.8.0-rc6-syzkaller-g381f163531d8 #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz-executor.2 state:D stack:0 pid:24758 tgid:24758 ppid:1 flags:0x0000000d Call trace: __switch_to+0x314/0x560 arch/arm64/kernel/process.c:553 context_switch kernel/sched/core.c:5400 [inline] __schedule+0x1498/0x24b4 kernel/sched/core.c:6727 __schedule_loop kernel/sched/core.c:6802 [inline] schedule+0xb8/0x19c kernel/sched/core.c:6817 schedule_preempt_disabled+0x18/0x2c kernel/sched/core.c:6874 __mutex_lock_common+0xbd8/0x21a0 kernel/locking/mutex.c:684 __mutex_lock kernel/locking/mutex.c:752 [inline] mutex_lock_nested+0x2c/0x38 kernel/locking/mutex.c:804 rtnl_lock+0x20/0x2c net/core/rtnetlink.c:79 nsim_init_netdevsim drivers/net/netdevsim/netdev.c:335 [inline] nsim_create+0x2e0/0x400 drivers/net/netdevsim/netdev.c:401 __nsim_dev_port_add+0x530/0x894 drivers/net/netdevsim/dev.c:1390 nsim_dev_port_add_all+0x4c/0x110 drivers/net/netdevsim/dev.c:1446 nsim_drv_probe+0x788/0x9a8 drivers/net/netdevsim/dev.c:1604 nsim_bus_probe+0x20/0x30 drivers/net/netdevsim/bus.c:246 really_probe+0x394/0xa7c drivers/base/dd.c:658 __driver_probe_device+0x194/0x3b4 drivers/base/dd.c:800 driver_probe_device+0x78/0x330 drivers/base/dd.c:830 __device_attach_driver+0x2a8/0x4f4 drivers/base/dd.c:958 bus_for_each_drv+0x228/0x2bc drivers/base/bus.c:457 __device_attach+0x2b4/0x434 drivers/base/dd.c:1030 device_initial_probe+0x24/0x34 drivers/base/dd.c:1079 bus_probe_device+0x178/0x240 drivers/base/bus.c:532 device_add+0x768/0xaac drivers/base/core.c:3639 device_register+0x28/0x38 drivers/base/core.c:3721 nsim_bus_dev_new drivers/net/netdevsim/bus.c:297 [inline] new_device_store+0x340/0x704 drivers/net/netdevsim/bus.c:173 bus_attr_store+0x80/0xa4 drivers/base/bus.c:170 sysfs_kf_write+0x200/0x280 fs/sysfs/file.c:136 kernfs_fop_write_iter+0x334/0x48c fs/kernfs/file.c:334 call_write_iter include/linux/fs.h:2087 [inline] new_sync_write fs/read_write.c:497 [inline] vfs_write+0x968/0xc3c fs/read_write.c:590 ksys_write+0x15c/0x26c fs/read_write.c:643 __do_sys_write fs/read_write.c:655 [inline] __se_sys_write fs/read_write.c:652 [inline] __arm64_sys_write+0x7c/0x90 fs/read_write.c:652 __invoke_syscall arch/arm64/kernel/syscall.c:34 [inline] invoke_syscall+0x98/0x2b8 arch/arm64/kernel/syscall.c:48 el0_svc_common+0x130/0x23c arch/arm64/kernel/syscall.c:133 do_el0_svc+0x48/0x58 arch/arm64/kernel/syscall.c:152 el0_svc+0x54/0x168 arch/arm64/kernel/entry-common.c:712 el0t_64_sync_handler+0x84/0xfc arch/arm64/kernel/entry-common.c:730 el0t_64_sync+0x190/0x194 arch/arm64/kernel/entry.S:598 INFO: task syz-executor.1:26742 blocked for more than 143 seconds. Tainted: G B 6.8.0-rc6-syzkaller-g381f163531d8 #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz-executor.1 state:D stack:0 pid:26742 tgid:26741 ppid:24751 flags:0x00000005 Call trace: __switch_to+0x314/0x560 arch/arm64/kernel/process.c:553 context_switch kernel/sched/core.c:5400 [inline] __schedule+0x1498/0x24b4 kernel/sched/core.c:6727 __schedule_loop kernel/sched/core.c:6802 [inline] schedule+0xb8/0x19c kernel/sched/core.c:6817 schedule_preempt_disabled+0x18/0x2c kernel/sched/core.c:6874 __mutex_lock_common+0xbd8/0x21a0 kernel/locking/mutex.c:684 __mutex_lock kernel/locking/mutex.c:752 [inline] mutex_lock_nested+0x2c/0x38 kernel/locking/mutex.c:804 __netlink_dump_start+0x10c/0x704 net/netlink/af_netlink.c:2333 netlink_dump_start include/linux/netlink.h:338 [inline] rtnetlink_rcv_msg+0xa58/0xdbc net/core/rtnetlink.c:6574 netlink_rcv_skb+0x214/0x3c4 net/netlink/af_netlink.c:2543 rtnetlink_rcv+0x28/0x38 net/core/rtnetlink.c:6636 netlink_unicast_kernel net/netlink/af_netlink.c:1341 [inline] netlink_unicast+0x65c/0x898 net/netlink/af_netlink.c:1367 netlink_sendmsg+0x83c/0xb20 net/netlink/af_netlink.c:1908 sock_sendmsg_nosec net/socket.c:730 [inline] __sock_sendmsg net/socket.c:745 [inline] sock_write_iter+0x2d8/0x448 net/socket.c:1160 call_write_iter include/linux/fs.h:2087 [inline] new_sync_write fs/read_write.c:497 [inline] vfs_write+0x968/0xc3c fs/read_write.c:590 ksys_write+0x15c/0x26c fs/read_write.c:643 __do_sys_write fs/read_write.c:655 [inline] __se_sys_write fs/read_write.c:652 [inline] __arm64_sys_write+0x7c/0x90 fs/read_write.c:652 __invoke_syscall arch/arm64/kernel/syscall.c:34 [inline] invoke_syscall+0x98/0x2b8 arch/arm64/kernel/syscall.c:48 el0_svc_common+0x130/0x23c arch/arm64/kernel/syscall.c:133 do_el0_svc+0x48/0x58 arch/arm64/kernel/syscall.c:152 el0_svc+0x54/0x168 arch/arm64/kernel/entry-common.c:712 el0t_64_sync_handler+0x84/0xfc arch/arm64/kernel/entry-common.c:730 el0t_64_sync+0x190/0x194 arch/arm64/kernel/entry.S:598 INFO: task syz-executor.1:26744 blocked for more than 143 seconds. Tainted: G B 6.8.0-rc6-syzkaller-g381f163531d8 #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz-executor.1 state:D stack:0 pid:26744 tgid:26741 ppid:24751 flags:0x00000005 Call trace: __switch_to+0x314/0x560 arch/arm64/kernel/process.c:553 context_switch kernel/sched/core.c:5400 [inline] __schedule+0x1498/0x24b4 kernel/sched/core.c:6727 __schedule_loop kernel/sched/core.c:6802 [inline] schedule+0xb8/0x19c kernel/sched/core.c:6817 schedule_preempt_disabled+0x18/0x2c kernel/sched/core.c:6874 __mutex_lock_common+0xbd8/0x21a0 kernel/locking/mutex.c:684 __mutex_lock kernel/locking/mutex.c:752 [inline] mutex_lock_nested+0x2c/0x38 kernel/locking/mutex.c:804 rtnl_lock net/core/rtnetlink.c:79 [inline] rtnetlink_rcv_msg+0x704/0xdbc net/core/rtnetlink.c:6615 netlink_rcv_skb+0x214/0x3c4 net/netlink/af_netlink.c:2543 rtnetlink_rcv+0x28/0x38 net/core/rtnetlink.c:6636 netlink_unicast_kernel net/netlink/af_netlink.c:1341 [inline] netlink_unicast+0x65c/0x898 net/netlink/af_netlink.c:1367 netlink_sendmsg+0x83c/0xb20 net/netlink/af_netlink.c:1908 sock_sendmsg_nosec net/socket.c:730 [inline] __sock_sendmsg net/socket.c:745 [inline] __sys_sendto+0x374/0x4f4 net/socket.c:2191 __do_sys_sendto net/socket.c:2203 [inline] __se_sys_sendto net/socket.c:2199 [inline] __arm64_sys_sendto+0xd8/0xf8 net/socket.c:2199 __invoke_syscall arch/arm64/kernel/syscall.c:34 [inline] invoke_syscall+0x98/0x2b8 arch/arm64/kernel/syscall.c:48 el0_svc_common+0x130/0x23c arch/arm64/kernel/syscall.c:133 do_el0_svc+0x48/0x58 arch/arm64/kernel/syscall.c:152 el0_svc+0x54/0x168 arch/arm64/kernel/entry-common.c:712 el0t_64_sync_handler+0x84/0xfc arch/arm64/kernel/entry-common.c:730 el0t_64_sync+0x190/0x194 arch/arm64/kernel/entry.S:598 Future hung task reports are suppressed, see sysctl kernel.hung_task_warnings INFO: lockdep is turned off.