INFO: task syz.3.730:8471 blocked for more than 143 seconds. Not tainted 6.12.0-rc5-syzkaller-01229-g2a6f99ee1a80 #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz.3.730 state:D stack:25952 pid:8471 tgid:8470 ppid:5849 flags:0x00000004 Call Trace: context_switch kernel/sched/core.c:5328 [inline] __schedule+0x18af/0x4bd0 kernel/sched/core.c:6690 __schedule_loop kernel/sched/core.c:6767 [inline] schedule+0x14b/0x320 kernel/sched/core.c:6782 schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:6839 __mutex_lock_common kernel/locking/mutex.c:684 [inline] __mutex_lock+0x6a7/0xd70 kernel/locking/mutex.c:752 tipc_nl_bearer_enable+0x17/0x40 net/tipc/bearer.c:1055 genl_family_rcv_msg_doit net/netlink/genetlink.c:1115 [inline] genl_family_rcv_msg net/netlink/genetlink.c:1195 [inline] genl_rcv_msg+0xb14/0xec0 net/netlink/genetlink.c:1210 netlink_rcv_skb+0x1e3/0x430 net/netlink/af_netlink.c:2551 genl_rcv+0x28/0x40 net/netlink/genetlink.c:1219 netlink_unicast_kernel net/netlink/af_netlink.c:1331 [inline] netlink_unicast+0x7f6/0x990 net/netlink/af_netlink.c:1357 netlink_sendmsg+0x8e4/0xcb0 net/netlink/af_netlink.c:1901 sock_sendmsg_nosec net/socket.c:729 [inline] __sock_sendmsg+0x221/0x270 net/socket.c:744 ____sys_sendmsg+0x52a/0x7e0 net/socket.c:2609 ___sys_sendmsg net/socket.c:2663 [inline] __sys_sendmsg+0x292/0x380 net/socket.c:2692 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: 0033:0x7fb70937e719 RSP: 002b:00007fb70a0b1038 EFLAGS: 00000246 ORIG_RAX: 000000000000002e RAX: ffffffffffffffda RBX: 00007fb709535f80 RCX: 00007fb70937e719 RDX: 0000000000000000 RSI: 0000000020000180 RDI: 0000000000000004 RBP: 00007fb7093f139e R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 0000000000000000 R14: 00007fb709535f80 R15: 00007ffd7ed56ed8 INFO: task syz.3.730:8473 blocked for more than 143 seconds. Not tainted 6.12.0-rc5-syzkaller-01229-g2a6f99ee1a80 #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz.3.730 state:D stack:26048 pid:8473 tgid:8470 ppid:5849 flags:0x00000004 Call Trace: context_switch kernel/sched/core.c:5328 [inline] __schedule+0x18af/0x4bd0 kernel/sched/core.c:6690 __schedule_loop kernel/sched/core.c:6767 [inline] schedule+0x14b/0x320 kernel/sched/core.c:6782 schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:6839 __mutex_lock_common kernel/locking/mutex.c:684 [inline] __mutex_lock+0x6a7/0xd70 kernel/locking/mutex.c:752 nl80211_pre_doit+0x5f/0x8b0 net/wireless/nl80211.c:16604 genl_family_rcv_msg_doit net/netlink/genetlink.c:1110 [inline] genl_family_rcv_msg net/netlink/genetlink.c:1195 [inline] genl_rcv_msg+0xaaa/0xec0 net/netlink/genetlink.c:1210 netlink_rcv_skb+0x1e3/0x430 net/netlink/af_netlink.c:2551 genl_rcv+0x28/0x40 net/netlink/genetlink.c:1219 netlink_unicast_kernel net/netlink/af_netlink.c:1331 [inline] netlink_unicast+0x7f6/0x990 net/netlink/af_netlink.c:1357 netlink_sendmsg+0x8e4/0xcb0 net/netlink/af_netlink.c:1901 sock_sendmsg_nosec net/socket.c:729 [inline] __sock_sendmsg+0x221/0x270 net/socket.c:744 ____sys_sendmsg+0x52a/0x7e0 net/socket.c:2609 ___sys_sendmsg net/socket.c:2663 [inline] __sys_sendmsg+0x292/0x380 net/socket.c:2692 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: 0033:0x7fb70937e719 RSP: 002b:00007fb70a090038 EFLAGS: 00000246 ORIG_RAX: 000000000000002e RAX: ffffffffffffffda RBX: 00007fb709536058 RCX: 00007fb70937e719 RDX: 0000000000000000 RSI: 0000000020000400 RDI: 0000000000000003 RBP: 00007fb7093f139e R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 0000000000000000 R14: 00007fb709536058 R15: 00007ffd7ed56ed8 INFO: task syz.1.734:8483 blocked for more than 144 seconds. Not tainted 6.12.0-rc5-syzkaller-01229-g2a6f99ee1a80 #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz.1.734 state:D stack:23352 pid:8483 tgid:8481 ppid:5846 flags:0x00004002 Call Trace: context_switch kernel/sched/core.c:5328 [inline] __schedule+0x18af/0x4bd0 kernel/sched/core.c:6690 __schedule_loop kernel/sched/core.c:6767 [inline] schedule+0x14b/0x320 kernel/sched/core.c:6782 schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:6839 __mutex_lock_common kernel/locking/mutex.c:684 [inline] __mutex_lock+0x6a7/0xd70 kernel/locking/mutex.c:752 tun_detach drivers/net/tun.c:698 [inline] tun_chr_close+0x3b/0x1b0 drivers/net/tun.c:3517 __fput+0x23f/0x880 fs/file_table.c:431 task_work_run+0x24f/0x310 kernel/task_work.c:239 exit_task_work include/linux/task_work.h:43 [inline] do_exit+0xa2f/0x28e0 kernel/exit.c:939 do_group_exit+0x207/0x2c0 kernel/exit.c:1088 get_signal+0x16a3/0x1740 kernel/signal.c:2917 arch_do_signal_or_restart+0x96/0x860 arch/x86/kernel/signal.c:337 exit_to_user_mode_loop kernel/entry/common.c:111 [inline] exit_to_user_mode_prepare include/linux/entry-common.h:328 [inline] __syscall_exit_to_user_mode_work kernel/entry/common.c:207 [inline] syscall_exit_to_user_mode+0xc9/0x370 kernel/entry/common.c:218 do_syscall_64+0x100/0x230 arch/x86/entry/common.c:89 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7fc366f7e719 RSP: 002b:00007fc367d16038 EFLAGS: 00000246 ORIG_RAX: 0000000000000141 RAX: fffffffffffffff5 RBX: 00007fc367136058 RCX: 00007fc366f7e719 RDX: 000000000000002d RSI: 00000000202a0fb8 RDI: 0000000000000005 RBP: 00007fc366ff139e R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 0000000000000001 R14: 00007fc367136058 R15: 00007fff54807ca8 Showing all locks held in the system: 1 lock held by khungtaskd/30: #0: ffffffff8e937da0 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire include/linux/rcupdate.h:337 [inline] #0: ffffffff8e937da0 (rcu_read_lock){....}-{1:2}, at: rcu_read_lock include/linux/rcupdate.h:849 [inline] #0: ffffffff8e937da0 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x55/0x2a0 kernel/locking/lockdep.c:6720 5 locks held by kworker/1:1/47: 3 locks held by kworker/u8:7/1150: #0: ffff88801ac89148 ((wq_completion)events_unbound){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3204 [inline] #0: ffff88801ac89148 ((wq_completion)events_unbound){+.+.}-{0:0}, at: process_scheduled_works+0x93b/0x1850 kernel/workqueue.c:3310 #1: ffffc90003d37d00 ((linkwatch_work).work){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3205 [inline] #1: ffffc90003d37d00 ((linkwatch_work).work){+.+.}-{0:0}, at: process_scheduled_works+0x976/0x1850 kernel/workqueue.c:3310 #2: ffffffff8fcd4968 (rtnl_mutex){+.+.}-{3:3}, at: linkwatch_event+0xe/0x60 net/core/link_watch.c:276 4 locks held by kworker/u8:14/3640: #0: ffff88801baed948 ((wq_completion)netns){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3204 [inline] #0: ffff88801baed948 ((wq_completion)netns){+.+.}-{0:0}, at: process_scheduled_works+0x93b/0x1850 kernel/workqueue.c:3310 #1: ffffc9000c93fd00 (net_cleanup_work){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3205 [inline] #1: ffffc9000c93fd00 (net_cleanup_work){+.+.}-{0:0}, at: process_scheduled_works+0x976/0x1850 kernel/workqueue.c:3310 #2: ffffffff8fcc7e10 (pernet_ops_rwsem){++++}-{3:3}, at: cleanup_net+0x16a/0xcc0 net/core/net_namespace.c:587 #3: ffffffff8fcd4968 (rtnl_mutex){+.+.}-{3:3}, at: ppp_exit_net+0xe3/0x3d0 drivers/net/ppp/ppp_generic.c:1146 2 locks held by getty/5607: #0: ffff8880357d10a0 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x25/0x70 drivers/tty/tty_ldisc.c:243 #1: ffffc900032432f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0x6a6/0x1e00 drivers/tty/n_tty.c:2211 1 lock held by syz-executor/5846: #0: ffffffff8fcd4968 (rtnl_mutex){+.+.}-{3:3}, at: tun_detach drivers/net/tun.c:698 [inline] #0: ffffffff8fcd4968 (rtnl_mutex){+.+.}-{3:3}, at: tun_chr_close+0x3b/0x1b0 drivers/net/tun.c:3517 3 locks held by kworker/0:3/5847: #0: ffff88801ac81948 ((wq_completion)events_power_efficient){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3204 [inline] #0: ffff88801ac81948 ((wq_completion)events_power_efficient){+.+.}-{0:0}, at: process_scheduled_works+0x93b/0x1850 kernel/workqueue.c:3310 #1: ffffc90003ed7d00 ((reg_check_chans).work){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3205 [inline] #1: ffffc90003ed7d00 ((reg_check_chans).work){+.+.}-{0:0}, at: process_scheduled_works+0x976/0x1850 kernel/workqueue.c:3310 #2: ffffffff8fcd4968 (rtnl_mutex){+.+.}-{3:3}, at: reg_check_chans_work+0x99/0xfd0 net/wireless/reg.c:2480 1 lock held by syz.0.721/8435: #0: ffffffff8fcd4968 (rtnl_mutex){+.+.}-{3:3}, at: tun_detach drivers/net/tun.c:698 [inline] #0: ffffffff8fcd4968 (rtnl_mutex){+.+.}-{3:3}, at: tun_chr_close+0x3b/0x1b0 drivers/net/tun.c:3517 1 lock held by syz.2.726/8466: #0: ffffffff8fcd4968 (rtnl_mutex){+.+.}-{3:3}, at: tun_detach drivers/net/tun.c:698 [inline] #0: ffffffff8fcd4968 (rtnl_mutex){+.+.}-{3:3}, at: tun_chr_close+0x3b/0x1b0 drivers/net/tun.c:3517 3 locks held by syz.4.727/8462: #0: ffffffff8fcd4968 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_lock net/core/rtnetlink.c:79 [inline] #0: ffffffff8fcd4968 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg+0x6e6/0xcf0 net/core/rtnetlink.c:6796 #1: ffffffff8f46ba80 (&ops->srcu#2){.+.+}-{0:0}, at: rcu_lock_acquire include/linux/rcupdate.h:337 [inline] #1: ffffffff8f46ba80 (&ops->srcu#2){.+.+}-{0:0}, at: rcu_read_lock include/linux/rcupdate.h:849 [inline] #1: ffffffff8f46ba80 (&ops->srcu#2){.+.+}-{0:0}, at: rtnl_link_ops_get+0x22/0x250 net/core/rtnetlink.c:475 #2: ffffffff8e7d1d90 (cpu_hotplug_lock){++++}-{0:0}, at: flush_all_backlogs net/core/dev.c:6031 [inline] #2: ffffffff8e7d1d90 (cpu_hotplug_lock){++++}-{0:0}, at: unregister_netdevice_many_notify+0x5ea/0x1da0 net/core/dev.c:11462 3 locks held by syz.3.730/8471: #0: ffffffff8fd3ae10 (cb_lock){++++}-{3:3}, at: genl_rcv+0x19/0x40 net/netlink/genetlink.c:1218 #1: ffffffff8fd3acc8 (genl_mutex){+.+.}-{3:3}, at: genl_lock net/netlink/genetlink.c:35 [inline] #1: ffffffff8fd3acc8 (genl_mutex){+.+.}-{3:3}, at: genl_op_lock net/netlink/genetlink.c:60 [inline] #1: ffffffff8fd3acc8 (genl_mutex){+.+.}-{3:3}, at: genl_rcv_msg+0x121/0xec0 net/netlink/genetlink.c:1209 #2: ffffffff8fcd4968 (rtnl_mutex){+.+.}-{3:3}, at: tipc_nl_bearer_enable+0x17/0x40 net/tipc/bearer.c:1055 2 locks held by syz.3.730/8473: #0: ffffffff8fd3ae10 (cb_lock){++++}-{3:3}, at: genl_rcv+0x19/0x40 net/netlink/genetlink.c:1218 #1: ffffffff8fcd4968 (rtnl_mutex){+.+.}-{3:3}, at: nl80211_pre_doit+0x5f/0x8b0 net/wireless/nl80211.c:16604 1 lock held by syz.1.734/8483: #0: ffffffff8fcd4968 (rtnl_mutex){+.+.}-{3:3}, at: tun_detach drivers/net/tun.c:698 [inline] #0: ffffffff8fcd4968 (rtnl_mutex){+.+.}-{3:3}, at: tun_chr_close+0x3b/0x1b0 drivers/net/tun.c:3517 1 lock held by syz-executor/8489: #0: ffffffff8fcd4968 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_net_lock include/linux/rtnetlink.h:128 [inline] #0: ffffffff8fcd4968 (rtnl_mutex){+.+.}-{3:3}, at: inet_rtm_newaddr+0x47e/0x1bc0 net/ipv4/devinet.c:988 1 lock held by syz-executor/8491: #0: ffffffff8fcd4968 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_net_lock include/linux/rtnetlink.h:128 [inline] #0: ffffffff8fcd4968 (rtnl_mutex){+.+.}-{3:3}, at: inet_rtm_newaddr+0x47e/0x1bc0 net/ipv4/devinet.c:988 1 lock held by syz-executor/8492: #0: ffffffff8fcd4968 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_net_lock include/linux/rtnetlink.h:128 [inline] #0: ffffffff8fcd4968 (rtnl_mutex){+.+.}-{3:3}, at: inet_rtm_newaddr+0x47e/0x1bc0 net/ipv4/devinet.c:988 1 lock held by syz-executor/8496: #0: ffffffff8fcd4968 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_net_lock include/linux/rtnetlink.h:128 [inline] #0: ffffffff8fcd4968 (rtnl_mutex){+.+.}-{3:3}, at: inet_rtm_newaddr+0x47e/0x1bc0 net/ipv4/devinet.c:988 1 lock held by syz-executor/8499: #0: ffffffff8fcd4968 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_net_lock include/linux/rtnetlink.h:128 [inline] #0: ffffffff8fcd4968 (rtnl_mutex){+.+.}-{3:3}, at: inet_rtm_newaddr+0x47e/0x1bc0 net/ipv4/devinet.c:988 1 lock held by syz-executor/8504: #0: ffffffff8fcd4968 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_net_lock include/linux/rtnetlink.h:128 [inline] #0: ffffffff8fcd4968 (rtnl_mutex){+.+.}-{3:3}, at: inet_rtm_newaddr+0x47e/0x1bc0 net/ipv4/devinet.c:988 1 lock held by syz-executor/8506: #0: ffffffff8fcd4968 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_net_lock include/linux/rtnetlink.h:128 [inline] #0: ffffffff8fcd4968 (rtnl_mutex){+.+.}-{3:3}, at: inet_rtm_newaddr+0x47e/0x1bc0 net/ipv4/devinet.c:988 1 lock held by syz-executor/8507: #0: ffffffff8fcd4968 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_net_lock include/linux/rtnetlink.h:128 [inline] #0: ffffffff8fcd4968 (rtnl_mutex){+.+.}-{3:3}, at: inet_rtm_newaddr+0x47e/0x1bc0 net/ipv4/devinet.c:988 1 lock held by syz-executor/8511: #0: ffffffff8fcd4968 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_net_lock include/linux/rtnetlink.h:128 [inline] #0: ffffffff8fcd4968 (rtnl_mutex){+.+.}-{3:3}, at: inet_rtm_newaddr+0x47e/0x1bc0 net/ipv4/devinet.c:988 1 lock held by syz-executor/8514: #0: ffffffff8fcd4968 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_net_lock include/linux/rtnetlink.h:128 [inline] #0: ffffffff8fcd4968 (rtnl_mutex){+.+.}-{3:3}, at: inet_rtm_newaddr+0x47e/0x1bc0 net/ipv4/devinet.c:988 1 lock held by syz-executor/8524: #0: ffffffff8fcd4968 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_net_lock include/linux/rtnetlink.h:128 [inline] #0: ffffffff8fcd4968 (rtnl_mutex){+.+.}-{3:3}, at: inet_rtm_newaddr+0x47e/0x1bc0 net/ipv4/devinet.c:988 1 lock held by syz-executor/8525: #0: ffffffff8fcd4968 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_net_lock include/linux/rtnetlink.h:128 [inline] #0: ffffffff8fcd4968 (rtnl_mutex){+.+.}-{3:3}, at: inet_rtm_newaddr+0x47e/0x1bc0 net/ipv4/devinet.c:988 1 lock held by syz-executor/8529: #0: ffffffff8fcd4968 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_net_lock include/linux/rtnetlink.h:128 [inline] #0: ffffffff8fcd4968 (rtnl_mutex){+.+.}-{3:3}, at: inet_rtm_newaddr+0x47e/0x1bc0 net/ipv4/devinet.c:988 1 lock held by syz-executor/8531: #0: ffffffff8fcd4968 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_net_lock include/linux/rtnetlink.h:128 [inline] #0: ffffffff8fcd4968 (rtnl_mutex){+.+.}-{3:3}, at: inet_rtm_newaddr+0x47e/0x1bc0 net/ipv4/devinet.c:988 1 lock held by syz-executor/8534: #0: ffffffff8fcd4968 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_net_lock include/linux/rtnetlink.h:128 [inline] #0: ffffffff8fcd4968 (rtnl_mutex){+.+.}-{3:3}, at: inet_rtm_newaddr+0x47e/0x1bc0 net/ipv4/devinet.c:988 ============================================= NMI backtrace for cpu 0 CPU: 0 UID: 0 PID: 30 Comm: khungtaskd Not tainted 6.12.0-rc5-syzkaller-01229-g2a6f99ee1a80 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/30/2024 Call Trace: __dump_stack lib/dump_stack.c:94 [inline] dump_stack_lvl+0x241/0x360 lib/dump_stack.c:120 nmi_cpu_backtrace+0x49c/0x4d0 lib/nmi_backtrace.c:113 nmi_trigger_cpumask_backtrace+0x198/0x320 lib/nmi_backtrace.c:62 trigger_all_cpu_backtrace include/linux/nmi.h:162 [inline] check_hung_uninterruptible_tasks kernel/hung_task.c:223 [inline] watchdog+0xff4/0x1040 kernel/hung_task.c:379 kthread+0x2f0/0x390 kernel/kthread.c:389 ret_from_fork+0x4b/0x80 arch/x86/kernel/process.c:147 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244 Sending NMI from CPU 0 to CPUs 1: NMI backtrace for cpu 1 CPU: 1 UID: 0 PID: 47 Comm: kworker/1:1 Not tainted 6.12.0-rc5-syzkaller-01229-g2a6f99ee1a80 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/30/2024 Workqueue: mld mld_query_work RIP: 0010:check_preemption_disabled+0x4b/0x120 lib/smp_processor_id.c:55 Code: 8b 05 51 70 3a 74 a9 ff ff ff 7f 74 26 65 48 8b 04 25 28 00 00 00 48 3b 44 24 08 0f 85 ce 00 00 00 89 d8 48 83 c4 10 5b 41 5c <41> 5e 41 5f c3 cc cc cc cc 48 c7 04 24 00 00 00 00 9c 8f 04 24 f7 RSP: 0018:ffffc90000a18648 EFLAGS: 00000282 RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffff888020ea1e00 RDX: ffff888020ea1e00 RSI: ffffffff8c610440 RDI: ffffffff8c610400 RBP: ffffc90000a18790 R08: ffffffff8a66f32f R09: 1ffffffff285b700 R10: dffffc0000000000 R11: fffffbfff285b701 R12: dffffc0000000000 R13: 1ffff920001430d8 R14: ffff888060820000 R15: ffffffff8a672e60 FS: 0000000000000000(0000) GS:ffff8880b8700000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000000110c2cf0c4 CR3: 000000000e734000 CR4: 00000000003526f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: rcu_is_watching_curr_cpu include/linux/context_tracking.h:128 [inline] rcu_is_watching+0x15/0xb0 kernel/rcu/tree.c:737 rcu_read_lock include/linux/rcupdate.h:850 [inline] nf_hook include/linux/netfilter.h:238 [inline] NF_HOOK+0xd8/0x450 include/linux/netfilter.h:312 ip6_input net/ipv6/ip6_input.c:490 [inline] ip6_mc_input+0x9c5/0xc30 net/ipv6/ip6_input.c:584 NF_HOOK+0x3a4/0x450 include/linux/netfilter.h:314 __netif_receive_skb_one_core net/core/dev.c:5672 [inline] __netif_receive_skb+0x1ea/0x650 net/core/dev.c:5785 process_backlog+0x662/0x15b0 net/core/dev.c:6117 __napi_poll+0xcb/0x490 net/core/dev.c:6838 napi_poll net/core/dev.c:6907 [inline] net_rx_action+0x89b/0x1240 net/core/dev.c:7029 handle_softirqs+0x2c5/0x980 kernel/softirq.c:554 do_softirq+0x11b/0x1e0 kernel/softirq.c:455 __local_bh_enable_ip+0x1bb/0x200 kernel/softirq.c:382 spin_unlock_bh include/linux/spinlock.h:396 [inline] mld_query_work+0xea4/0x39c0 net/ipv6/mcast.c:1529 process_one_work kernel/workqueue.c:3229 [inline] process_scheduled_works+0xa63/0x1850 kernel/workqueue.c:3310 worker_thread+0x870/0xd30 kernel/workqueue.c:3391 kthread+0x2f0/0x390 kernel/kthread.c:389 ret_from_fork+0x4b/0x80 arch/x86/kernel/process.c:147 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244