watchdog: BUG: soft lockup - CPU#0 stuck for 22s! [syz-executor.0:9782] Modules linked in: irq event stamp: 21787307 hardirqs last enabled at (21787306): [] __local_bh_enable_ip+0x230/0x470 kernel/softirq.c:388 hardirqs last disabled at (21787307): [] enter_el1_irq_or_nmi+0x10/0x1c arch/arm64/kernel/entry-common.c:227 softirqs last enabled at (39400): [] spin_unlock_bh include/linux/spinlock.h:408 [inline] softirqs last enabled at (39400): [] clusterip_netdev_event+0x37c/0x3a4 net/ipv4/netfilter/ipt_CLUSTERIP.c:233 softirqs last disabled at (39420): [] spin_lock_bh include/linux/spinlock.h:368 [inline] softirqs last disabled at (39420): [] batadv_tt_local_resize_to_mtu+0x60/0x150 net/batman-adv/translation-table.c:3949 CPU: 0 PID: 9782 Comm: syz-executor.0 Not tainted 5.15.149-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/25/2024 pstate: 80400005 (Nzcv daif +PAN -UAO -TCO -DIT -SSBS BTYPE=--) pc : should_resched arch/arm64/include/asm/preempt.h:78 [inline] pc : __local_bh_enable_ip+0x238/0x470 kernel/softirq.c:390 lr : __local_bh_enable_ip+0x230/0x470 kernel/softirq.c:388 sp : ffff80001d2d6260 x29: ffff80001d2d6270 x28: dfff800000000000 x27: 1fffe000225d3671 x26: ffff000112e9b398 x25: ffff000112e9b388 x24: 0000000000000001 x23: 1fffe0001a6656d1 x22: dfff800000000000 x21: ffff8000117dd4a4 x20: 0000000000000202 x19: ffff0000d332b688 x18: 0000000000000202 x17: 0000000000000002 x16: ffff8000082e9cf8 x15: 00000000ffffffff x14: 1ffff0000292406a x13: dfff800000000000 x12: 0000000000040000 x11: 000000000003ffff x10: 0000000000000003 x9 : 0000000000000000 x8 : 00000000000000e0 x7 : 0000000000000000 x6 : 0000000000000000 x5 : 0000000000000000 x4 : 0000000000000000 x3 : ffff800008045860 x2 : 0000000000000002 x1 : ffff800011adace0 x0 : ffff80019ff83000 Call trace: arch_local_irq_enable arch/arm64/include/asm/irqflags.h:35 [inline] __local_bh_enable_ip+0x238/0x470 kernel/softirq.c:388 __raw_spin_unlock_bh include/linux/spinlock_api_smp.h:176 [inline] _raw_spin_unlock_bh+0xf8/0x180 kernel/locking/spinlock.c:210 spin_unlock_bh include/linux/spinlock.h:408 [inline] batadv_tt_local_purge_pending_clients+0x278/0x300 net/batman-adv/translation-table.c:3673 batadv_tt_local_resize_to_mtu+0xa4/0x150 net/batman-adv/translation-table.c:3957 batadv_update_min_mtu net/batman-adv/hard-interface.c:647 [inline] batadv_hardif_activate_interface+0x1d0/0x25c net/batman-adv/hard-interface.c:674 batadv_hard_if_event+0xdc/0xe10 net/batman-adv/hard-interface.c:965 notifier_call_chain kernel/notifier.c:83 [inline] raw_notifier_call_chain+0xd4/0x164 kernel/notifier.c:391 __dev_notify_flags+0x2ac/0x534 dev_change_flags+0xc8/0x154 net/core/dev.c:8886 vlan_device_event+0x3f0/0x18ec net/8021q/vlan.c:469 notifier_call_chain kernel/notifier.c:83 [inline] raw_notifier_call_chain+0xd4/0x164 kernel/notifier.c:391 __dev_notify_flags+0x2ac/0x534 dev_change_flags+0xc8/0x154 net/core/dev.c:8886 do_setlink+0xaa4/0x3164 net/core/rtnetlink.c:2741 rtnl_setlink+0x380/0x44c net/core/rtnetlink.c:3034 rtnetlink_rcv_msg+0xa74/0xdac net/core/rtnetlink.c:5630 netlink_rcv_skb+0x20c/0x3b8 net/netlink/af_netlink.c:2505 rtnetlink_rcv+0x28/0x38 net/core/rtnetlink.c:5648 netlink_unicast_kernel net/netlink/af_netlink.c:1330 [inline] netlink_unicast+0x664/0x938 net/netlink/af_netlink.c:1356 netlink_sendmsg+0x844/0xb38 net/netlink/af_netlink.c:1924 sock_sendmsg_nosec net/socket.c:704 [inline] __sock_sendmsg net/socket.c:716 [inline] sock_write_iter+0x2b0/0x3f8 net/socket.c:1079 do_iter_readv_writev+0x420/0x5f8 do_iter_write+0x1b8/0x664 fs/read_write.c:855 vfs_writev fs/read_write.c:928 [inline] do_writev+0x220/0x3ec fs/read_write.c:971 __do_sys_writev fs/read_write.c:1044 [inline] __se_sys_writev fs/read_write.c:1041 [inline] __arm64_sys_writev+0x80/0x94 fs/read_write.c:1041 __invoke_syscall arch/arm64/kernel/syscall.c:38 [inline] invoke_syscall+0x98/0x2b8 arch/arm64/kernel/syscall.c:52 el0_svc_common+0x138/0x258 arch/arm64/kernel/syscall.c:142 do_el0_svc+0x58/0x14c arch/arm64/kernel/syscall.c:181 el0_svc+0x7c/0x1f0 arch/arm64/kernel/entry-common.c:608 el0t_64_sync_handler+0x84/0xe4 arch/arm64/kernel/entry-common.c:626 el0t_64_sync+0x1a0/0x1a4 arch/arm64/kernel/entry.S:584