watchdog: BUG: soft lockup - CPU#0 stuck for 23s! [syz-executor.0:9363] Modules linked in: irq event stamp: 19969361 hardirqs last enabled at (19969360): [] __local_bh_enable_ip+0x258/0x4d0 kernel/softirq.c:388 hardirqs last disabled at (19969361): [] enter_el1_irq_or_nmi+0x10/0x1c arch/arm64/kernel/entry-common.c:227 softirqs last enabled at (10962): [] spin_unlock_bh include/linux/spinlock.h:408 [inline] softirqs last enabled at (10962): [] clusterip_netdev_event+0x37c/0x3a4 net/ipv4/netfilter/ipt_CLUSTERIP.c:233 softirqs last disabled at (11166): [] spin_lock_bh include/linux/spinlock.h:368 [inline] softirqs last disabled at (11166): [] batadv_tt_local_resize_to_mtu+0x60/0x150 net/batman-adv/translation-table.c:3949 CPU: 0 PID: 9363 Comm: syz-executor.0 Not tainted 5.15.134-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/04/2023 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+0x260/0x4d0 kernel/softirq.c:390 lr : __local_bh_enable_ip+0x258/0x4d0 kernel/softirq.c:388 sp : ffff80001d995f90 x29: ffff80001d995fa0 x28: 1fffe00018190202 x27: 1fffe0001819020e x26: ffff0000d1c4c328 x25: ffff0000c1e86408 x24: 0000000000000001 x23: 1fffe0001abdb6d1 x22: dfff800000000000 x21: ffff8000117b66a0 x20: 0000000000000000 x19: ffff0000d5edb688 x18: 0000000000000202 x17: ff80800008335c9c x16: ffff8000082eb4a4 x15: ffff800008335c9c x14: 1ffff0000292006a x13: ffffffffffffffff x12: 0000000000040000 x11: 000000000003ffff x10: 0000000000000003 x9 : 0000000000000000 x8 : 00000000000000e0 x7 : 0000000000000000 x6 : 0000000000000000 x5 : 0000000000000000 x4 : 0000000000000000 x3 : ffff800008045860 x2 : 0000000000000002 x1 : ffff800011abab40 x0 : ffff80019ffa7000 Call trace: arch_local_irq_enable arch/arm64/include/asm/irqflags.h:35 [inline] __local_bh_enable_ip+0x260/0x4d0 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+0x264/0x2e8 net/batman-adv/translation-table.c:1356 batadv_tt_local_resize_to_mtu+0x9c/0x150 net/batman-adv/translation-table.c:3956 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:8863 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:8863 do_setlink+0xaa4/0x3164 net/core/rtnetlink.c:2741 rtnl_group_changelink net/core/rtnetlink.c:3270 [inline] __rtnl_newlink net/core/rtnetlink.c:3439 [inline] rtnl_newlink+0xd8c/0x1af4 net/core/rtnetlink.c:3549 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:724 [inline] ____sys_sendmsg+0x584/0x870 net/socket.c:2412 ___sys_sendmsg+0x214/0x294 net/socket.c:2466 __sys_sendmsg net/socket.c:2495 [inline] __do_sys_sendmsg net/socket.c:2504 [inline] __se_sys_sendmsg net/socket.c:2502 [inline] __arm64_sys_sendmsg+0x1ac/0x25c net/socket.c:2502 __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:596 el0t_64_sync_handler+0x84/0xe4 arch/arm64/kernel/entry-common.c:614 el0t_64_sync+0x1a0/0x1a4 arch/arm64/kernel/entry.S:584