INFO: task dhcpcd:5767 blocked for more than 143 seconds. Not tainted 6.7.0-rc8-syzkaller-g0802e17d9aca #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:dhcpcd state:D stack:0 pid:5767 tgid:5767 ppid:5766 flags:0x00000004 Call trace: __switch_to+0x314/0x560 arch/arm64/kernel/process.c:556 context_switch kernel/sched/core.c:5376 [inline] __schedule+0x1354/0x2360 kernel/sched/core.c:6688 __schedule_loop kernel/sched/core.c:6763 [inline] schedule+0xb8/0x19c kernel/sched/core.c:6778 schedule_preempt_disabled+0x18/0x2c kernel/sched/core.c:6835 __mutex_lock_common+0xbd8/0x21a0 kernel/locking/mutex.c:679 __mutex_lock kernel/locking/mutex.c:747 [inline] mutex_lock_nested+0x2c/0x38 kernel/locking/mutex.c:799 rtnl_lock+0x20/0x2c net/core/rtnetlink.c:79 devinet_ioctl+0x278/0x17e4 net/ipv4/devinet.c:1091 inet_ioctl+0x2b0/0x4dc net/ipv4/af_inet.c:997 sock_do_ioctl+0x134/0x2d0 net/socket.c:1220 sock_ioctl+0x4ec/0x838 net/socket.c:1339 vfs_ioctl fs/ioctl.c:51 [inline] __do_sys_ioctl fs/ioctl.c:871 [inline] __se_sys_ioctl fs/ioctl.c:857 [inline] __arm64_sys_ioctl+0x14c/0x1c8 fs/ioctl.c:857 __invoke_syscall arch/arm64/kernel/syscall.c:37 [inline] invoke_syscall+0x98/0x2b8 arch/arm64/kernel/syscall.c:51 el0_svc_common+0x130/0x23c arch/arm64/kernel/syscall.c:136 do_el0_svc+0x48/0x58 arch/arm64/kernel/syscall.c:155 el0_svc+0x54/0x158 arch/arm64/kernel/entry-common.c:678 el0t_64_sync_handler+0x84/0xfc arch/arm64/kernel/entry-common.c:696 el0t_64_sync+0x190/0x194 arch/arm64/kernel/entry.S:595 INFO: task kworker/1:10:10788 blocked for more than 143 seconds. Not tainted 6.7.0-rc8-syzkaller-g0802e17d9aca #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:kworker/1:10 state:D stack:0 pid:10788 tgid:10788 ppid:2 flags:0x00000008 Workqueue: ipv6_addrconf addrconf_dad_work Call trace: __switch_to+0x314/0x560 arch/arm64/kernel/process.c:556 context_switch kernel/sched/core.c:5376 [inline] __schedule+0x1354/0x2360 kernel/sched/core.c:6688 __schedule_loop kernel/sched/core.c:6763 [inline] schedule+0xb8/0x19c kernel/sched/core.c:6778 schedule_preempt_disabled+0x18/0x2c kernel/sched/core.c:6835 __mutex_lock_common+0xbd8/0x21a0 kernel/locking/mutex.c:679 __mutex_lock kernel/locking/mutex.c:747 [inline] mutex_lock_nested+0x2c/0x38 kernel/locking/mutex.c:799 rtnl_lock+0x20/0x2c net/core/rtnetlink.c:79 addrconf_dad_work+0xcc/0x134c net/ipv6/addrconf.c:4137 process_one_work+0x694/0x1204 kernel/workqueue.c:2627 process_scheduled_works kernel/workqueue.c:2700 [inline] worker_thread+0x938/0xef4 kernel/workqueue.c:2781 kthread+0x288/0x310 kernel/kthread.c:388 ret_from_fork+0x10/0x20 arch/arm64/kernel/entry.S:857 INFO: task kworker/1:2:22299 blocked for more than 143 seconds. Not tainted 6.7.0-rc8-syzkaller-g0802e17d9aca #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:kworker/1:2 state:D stack:0 pid:22299 tgid:22299 ppid:2 flags:0x00000008 Workqueue: events switchdev_deferred_process_work Call trace: __switch_to+0x314/0x560 arch/arm64/kernel/process.c:556 context_switch kernel/sched/core.c:5376 [inline] __schedule+0x1354/0x2360 kernel/sched/core.c:6688 __schedule_loop kernel/sched/core.c:6763 [inline] schedule+0xb8/0x19c kernel/sched/core.c:6778 schedule_preempt_disabled+0x18/0x2c kernel/sched/core.c:6835 __mutex_lock_common+0xbd8/0x21a0 kernel/locking/mutex.c:679 __mutex_lock kernel/locking/mutex.c:747 [inline] mutex_lock_nested+0x2c/0x38 kernel/locking/mutex.c:799 rtnl_lock+0x20/0x2c net/core/rtnetlink.c:79 switchdev_deferred_process_work+0x14/0x28 net/switchdev/switchdev.c:75 process_one_work+0x694/0x1204 kernel/workqueue.c:2627 process_scheduled_works kernel/workqueue.c:2700 [inline] worker_thread+0x938/0xef4 kernel/workqueue.c:2781 kthread+0x288/0x310 kernel/kthread.c:388 ret_from_fork+0x10/0x20 arch/arm64/kernel/entry.S:857 INFO: task kworker/0:0:31646 blocked for more than 143 seconds. Not tainted 6.7.0-rc8-syzkaller-g0802e17d9aca #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:kworker/0:0 state:D stack:0 pid:31646 tgid:31646 ppid:2 flags:0x00000008 Workqueue: ipv6_addrconf addrconf_dad_work Call trace: __switch_to+0x314/0x560 arch/arm64/kernel/process.c:556 context_switch kernel/sched/core.c:5376 [inline] __schedule+0x1354/0x2360 kernel/sched/core.c:6688 __schedule_loop kernel/sched/core.c:6763 [inline] schedule+0xb8/0x19c kernel/sched/core.c:6778 schedule_preempt_disabled+0x18/0x2c kernel/sched/core.c:6835 __mutex_lock_common+0xbd8/0x21a0 kernel/locking/mutex.c:679 __mutex_lock kernel/locking/mutex.c:747 [inline] mutex_lock_nested+0x2c/0x38 kernel/locking/mutex.c:799 rtnl_lock+0x20/0x2c net/core/rtnetlink.c:79 addrconf_dad_work+0xcc/0x134c net/ipv6/addrconf.c:4137 process_one_work+0x694/0x1204 kernel/workqueue.c:2627 process_scheduled_works kernel/workqueue.c:2700 [inline] worker_thread+0x938/0xef4 kernel/workqueue.c:2781 kthread+0x288/0x310 kernel/kthread.c:388 ret_from_fork+0x10/0x20 arch/arm64/kernel/entry.S:857 INFO: task syz-executor.3:16327 blocked for more than 143 seconds. Not tainted 6.7.0-rc8-syzkaller-g0802e17d9aca #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz-executor.3 state:D stack:0 pid:16327 tgid:16325 ppid:6133 flags:0x00000005 Call trace: __switch_to+0x314/0x560 arch/arm64/kernel/process.c:556 context_switch kernel/sched/core.c:5376 [inline] __schedule+0x1354/0x2360 kernel/sched/core.c:6688 __schedule_loop kernel/sched/core.c:6763 [inline] schedule+0xb8/0x19c kernel/sched/core.c:6778 schedule_preempt_disabled+0x18/0x2c kernel/sched/core.c:6835 __mutex_lock_common+0xbd8/0x21a0 kernel/locking/mutex.c:679 __mutex_lock kernel/locking/mutex.c:747 [inline] mutex_lock_nested+0x2c/0x38 kernel/locking/mutex.c:799 rtnl_lock+0x20/0x2c net/core/rtnetlink.c:79 nl80211_pre_doit+0x70/0x774 net/wireless/nl80211.c:16345 genl_family_rcv_msg_doit net/netlink/genetlink.c:967 [inline] genl_family_rcv_msg net/netlink/genetlink.c:1052 [inline] genl_rcv_msg+0x820/0xb6c net/netlink/genetlink.c:1067 netlink_rcv_skb+0x214/0x3c4 net/netlink/af_netlink.c:2545 genl_rcv+0x38/0x50 net/netlink/genetlink.c:1076 netlink_unicast_kernel net/netlink/af_netlink.c:1342 [inline] netlink_unicast+0x65c/0x898 net/netlink/af_netlink.c:1368 netlink_sendmsg+0x83c/0xb20 net/netlink/af_netlink.c:1910 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:37 [inline] invoke_syscall+0x98/0x2b8 arch/arm64/kernel/syscall.c:51 el0_svc_common+0x130/0x23c arch/arm64/kernel/syscall.c:136 do_el0_svc+0x48/0x58 arch/arm64/kernel/syscall.c:155 el0_svc+0x54/0x158 arch/arm64/kernel/entry-common.c:678 el0t_64_sync_handler+0x84/0xfc arch/arm64/kernel/entry-common.c:696 el0t_64_sync+0x190/0x194 arch/arm64/kernel/entry.S:595 INFO: task syz-executor.1:16366 blocked for more than 143 seconds. Not tainted 6.7.0-rc8-syzkaller-g0802e17d9aca #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz-executor.1 state:D stack:0 pid:16366 tgid:16358 ppid:6135 flags:0x0000000d Call trace: __switch_to+0x314/0x560 arch/arm64/kernel/process.c:556 context_switch kernel/sched/core.c:5376 [inline] __schedule+0x1354/0x2360 kernel/sched/core.c:6688 __schedule_loop kernel/sched/core.c:6763 [inline] schedule+0xb8/0x19c kernel/sched/core.c:6778 schedule_preempt_disabled+0x18/0x2c kernel/sched/core.c:6835 __mutex_lock_common+0xbd8/0x21a0 kernel/locking/mutex.c:679 __mutex_lock kernel/locking/mutex.c:747 [inline] mutex_lock_nested+0x2c/0x38 kernel/locking/mutex.c:799 rtnl_lock net/core/rtnetlink.c:79 [inline] rtnetlink_rcv_msg+0x704/0xdbc net/core/rtnetlink.c:6555 netlink_rcv_skb+0x214/0x3c4 net/netlink/af_netlink.c:2545 rtnetlink_rcv+0x28/0x38 net/core/rtnetlink.c:6576 netlink_unicast_kernel net/netlink/af_netlink.c:1342 [inline] netlink_unicast+0x65c/0x898 net/netlink/af_netlink.c:1368 netlink_sendmsg+0x83c/0xb20 net/netlink/af_netlink.c:1910 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:37 [inline] invoke_syscall+0x98/0x2b8 arch/arm64/kernel/syscall.c:51 el0_svc_common+0x130/0x23c arch/arm64/kernel/syscall.c:136 do_el0_svc+0x48/0x58 arch/arm64/kernel/syscall.c:155 el0_svc+0x54/0x158 arch/arm64/kernel/entry-common.c:678 el0t_64_sync_handler+0x84/0xfc arch/arm64/kernel/entry-common.c:696 el0t_64_sync+0x190/0x194 arch/arm64/kernel/entry.S:595 Showing all locks held in the system: 1 lock held by khungtaskd/29: #0: ffff80008e6c48c0 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire+0xc/0x44 include/linux/rcupdate.h:300 1 lock held by klogd/5702: 1 lock held by dhcpcd/5767: #0: ffff800090f702e8 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_lock+0x20/0x2c net/core/rtnetlink.c:79 2 locks held by getty/5856: #0: ffff0000d22420a0 (&tty->ldisc_sem){++++}-{0:0}, at: ldsem_down_read+0x3c/0x4c drivers/tty/tty_ldsem.c:340 #1: ffff800094e602f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0x41c/0x1228 drivers/tty/n_tty.c:2201 3 locks held by kworker/1:10/10788: #0: ffff0000d1a83938 ((wq_completion)ipv6_addrconf){+.+.}-{0:0}, at: process_one_work+0x560/0x1204 kernel/workqueue.c:2600 #1: ffff80009f2c7c20 ((work_completion)(&(&ifa->dad_work)->work)){+.+.}-{0:0}, at: process_one_work+0x5a0/0x1204 kernel/workqueue.c:2602 #2: ffff800090f702e8 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_lock+0x20/0x2c net/core/rtnetlink.c:79 4 locks held by kworker/u4:16/5839: #0: ffff0000c18a4138 ((wq_completion)netns){+.+.}-{0:0}, at: process_one_work+0x560/0x1204 kernel/workqueue.c:2600 #1: ffff80009b637c20 (net_cleanup_work){+.+.}-{0:0}, at: process_one_work+0x5a0/0x1204 kernel/workqueue.c:2602 #2: ffff800090f64350 (pernet_ops_rwsem){++++}-{3:3}, at: cleanup_net+0xf4/0x8d0 net/core/net_namespace.c:576 #3: ffff800090f702e8 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_lock+0x20/0x2c net/core/rtnetlink.c:79 3 locks held by kworker/1:2/22299: #0: ffff0000c0020d38 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work+0x560/0x1204 kernel/workqueue.c:2600 #1: ffff80009b947c20 (deferred_process_work){+.+.}-{0:0}, at: process_one_work+0x5a0/0x1204 kernel/workqueue.c:2602 #2: ffff800090f702e8 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_lock+0x20/0x2c net/core/rtnetlink.c:79 2 locks held by kworker/u4:1/3855: #0: ffff0001b4144d98 (&rq->__lock){-.-.}-{2:2}, at: raw_spin_rq_lock_nested kernel/sched/core.c:558 [inline] #0: ffff0001b4144d98 (&rq->__lock){-.-.}-{2:2}, at: raw_spin_rq_lock kernel/sched/sched.h:1349 [inline] #0: ffff0001b4144d98 (&rq->__lock){-.-.}-{2:2}, at: rq_lock kernel/sched/sched.h:1663 [inline] #0: ffff0001b4144d98 (&rq->__lock){-.-.}-{2:2}, at: __schedule+0x2dc/0x2360 kernel/sched/core.c:6604 #1: ffff0001b4130e48 (&per_cpu_ptr(group->pcpu, cpu)->seq){-.-.}-{0:0}, at: psi_task_switch+0x3c0/0x618 kernel/sched/psi.c:988 3 locks held by kworker/0:0/31646: #0: ffff0000d1a83938 ((wq_completion)ipv6_addrconf){+.+.}-{0:0}, at: process_one_work+0x560/0x1204 kernel/workqueue.c:2600 #1: ffff80009e7e7c20 ((work_completion)(&(&ifa->dad_work)->work)){+.+.}-{0:0}, at: process_one_work+0x5a0/0x1204 kernel/workqueue.c:2602 #2: ffff800090f702e8 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_lock+0x20/0x2c net/core/rtnetlink.c:79 2 locks held by syz-executor.3/16327: #0: ffff800090fcf530 (cb_lock){++++}-{3:3}, at: genl_rcv+0x28/0x50 net/netlink/genetlink.c:1075 #1: ffff800090f702e8 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_lock+0x20/0x2c net/core/rtnetlink.c:79 1 lock held by syz-executor.1/16366: #0: ffff800090f702e8 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_lock net/core/rtnetlink.c:79 [inline] #0: ffff800090f702e8 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg+0x704/0xdbc net/core/rtnetlink.c:6555 1 lock held by syz-executor.0/16425: #0: ffff800090f702e8 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_lock net/core/rtnetlink.c:79 [inline] #0: ffff800090f702e8 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg+0x704/0xdbc net/core/rtnetlink.c:6555 2 locks held by syz-executor.5/16477: #0: ffff000153f78e10 (&sb->s_type->i_mutex_key#10){+.+.}-{3:3}, at: inode_lock include/linux/fs.h:802 [inline] #0: ffff000153f78e10 (&sb->s_type->i_mutex_key#10){+.+.}-{3:3}, at: __sock_release net/socket.c:658 [inline] #0: ffff000153f78e10 (&sb->s_type->i_mutex_key#10){+.+.}-{3:3}, at: sock_close+0x80/0x1e8 net/socket.c:1419 #1: ffff800090f702e8 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_lock+0x20/0x2c net/core/rtnetlink.c:79 1 lock held by syz-executor.1/16510: #0: ffff800090f702e8 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_lock net/core/rtnetlink.c:79 [inline] #0: ffff800090f702e8 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg+0x704/0xdbc net/core/rtnetlink.c:6555 1 lock held by syz-executor.3/16522: #0: ffff800090f702e8 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_lock net/core/rtnetlink.c:79 [inline] #0: ffff800090f702e8 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg+0x704/0xdbc net/core/rtnetlink.c:6555 1 lock held by syz-executor.5/16579: #0: ffff800090f702e8 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_lock net/core/rtnetlink.c:79 [inline] #0: ffff800090f702e8 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg+0x704/0xdbc net/core/rtnetlink.c:6555 1 lock held by syz-executor.0/16599: #0: ffff800090f702e8 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_lock net/core/rtnetlink.c:79 [inline] #0: ffff800090f702e8 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg+0x704/0xdbc net/core/rtnetlink.c:6555 =============================================