INFO: task kworker/u4:1:12 blocked for more than 143 seconds. Not tainted 6.13.0-syzkaller-02526-gc4b9570cfb63 #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:kworker/u4:1 state:D stack:20368 pid:12 tgid:12 ppid:2 flags:0x00004000 Workqueue: ipv6_addrconf addrconf_dad_work Call Trace: <TASK> context_switch kernel/sched/core.c:5373 [inline] __schedule+0x186c/0x4be0 kernel/sched/core.c:6760 __schedule_loop kernel/sched/core.c:6837 [inline] schedule+0x14b/0x320 kernel/sched/core.c:6852 schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:6909 __mutex_lock_common kernel/locking/mutex.c:662 [inline] __mutex_lock+0x817/0x1010 kernel/locking/mutex.c:730 addrconf_dad_work+0xd0/0x16f0 net/ipv6/addrconf.c:4215 process_one_work kernel/workqueue.c:3236 [inline] process_scheduled_works+0xa66/0x1840 kernel/workqueue.c:3317 worker_thread+0x870/0xd30 kernel/workqueue.c:3398 kthread+0x7a9/0x920 kernel/kthread.c:464 ret_from_fork+0x4b/0x80 arch/x86/kernel/process.c:148 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244 </TASK> INFO: task syz-executor:5473 blocked for more than 146 seconds. Not tainted 6.13.0-syzkaller-02526-gc4b9570cfb63 #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz-executor state:D stack:17456 pid:5473 tgid:5473 ppid:1 flags:0x00004004 Call Trace: <TASK> context_switch kernel/sched/core.c:5373 [inline] __schedule+0x186c/0x4be0 kernel/sched/core.c:6760 __schedule_loop kernel/sched/core.c:6837 [inline] schedule+0x14b/0x320 kernel/sched/core.c:6852 schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:6909 __mutex_lock_common kernel/locking/mutex.c:662 [inline] __mutex_lock+0x817/0x1010 kernel/locking/mutex.c:730 rtnl_net_lock include/linux/rtnetlink.h:128 [inline] inet_rtm_newaddr+0x47e/0x1bd0 net/ipv4/devinet.c:987 rtnetlink_rcv_msg+0x791/0xcf0 net/core/rtnetlink.c:6922 netlink_rcv_skb+0x1e3/0x430 net/netlink/af_netlink.c:2542 netlink_unicast_kernel net/netlink/af_netlink.c:1321 [inline] netlink_unicast+0x7f6/0x990 net/netlink/af_netlink.c:1347 netlink_sendmsg+0x8e4/0xcb0 net/netlink/af_netlink.c:1891 sock_sendmsg_nosec net/socket.c:711 [inline] __sock_sendmsg+0x221/0x270 net/socket.c:726 __sys_sendto+0x363/0x4c0 net/socket.c:2197 __do_sys_sendto net/socket.c:2204 [inline] __se_sys_sendto net/socket.c:2200 [inline] __x64_sys_sendto+0xde/0x100 net/socket.c:2200 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f7785587bbc RSP: 002b:00007ffebae557b0 EFLAGS: 00000293 ORIG_RAX: 000000000000002c RAX: ffffffffffffffda RBX: 00007f77862a4620 RCX: 00007f7785587bbc RDX: 0000000000000028 RSI: 00007f77862a4670 RDI: 0000000000000003 RBP: 0000000000000000 R08: 00007ffebae55804 R09: 000000000000000c R10: 0000000000000000 R11: 0000000000000293 R12: 0000000000000003 R13: 0000000000000000 R14: 00007f77862a4670 R15: 0000000000000000 </TASK> INFO: task syz-executor:5478 blocked for more than 152 seconds. Not tainted 6.13.0-syzkaller-02526-gc4b9570cfb63 #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz-executor state:D stack:19872 pid:5478 tgid:5478 ppid:1 flags:0x00004006