watchdog: BUG: soft lockup - CPU#1 stuck for 23s! [syz-executor.0:5003] Modules linked in: irq event stamp: 31879613 hardirqs last enabled at (31879612): [] __local_bh_enable_ip+0x230/0x470 kernel/softirq.c:401 hardirqs last disabled at (31879613): [] __el1_irq arch/arm64/kernel/entry-common.c:468 [inline] hardirqs last disabled at (31879613): [] el1_interrupt+0x24/0x68 arch/arm64/kernel/entry-common.c:486 softirqs last enabled at (2890): [] softirq_handle_end kernel/softirq.c:414 [inline] softirqs last enabled at (2890): [] __do_softirq+0xc1c/0xe38 kernel/softirq.c:600 softirqs last disabled at (2924): [] spin_lock_bh include/linux/spinlock.h:356 [inline] softirqs last disabled at (2924): [] batadv_tt_local_resize_to_mtu+0x60/0x150 net/batman-adv/translation-table.c:3949 CPU: 1 PID: 5003 Comm: syz-executor.0 Not tainted 6.1.84-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/27/2024 pstate: 80400005 (Nzcv daif +PAN -UAO -TCO -DIT -SSBS BTYPE=--) pc : should_resched arch/arm64/include/asm/preempt.h:79 [inline] pc : __local_bh_enable_ip+0x238/0x470 kernel/softirq.c:403 lr : __local_bh_enable_ip+0x230/0x470 kernel/softirq.c:401 sp : ffff80001e4466c0 x29: ffff80001e4466d0 x28: dfff800000000000 x27: 1fffe0001dc71491 x26: ffff0000ee38a498 x25: ffff0000ee38a488 x24: 0000000000000001 x23: 1fffe0001b6d6a69 x22: dfff800000000000 x21: ffff800011ef2394 x20: 0000000000000202 x19: ffff0000db6b5348 x18: ffff80001e4460c0 x17: 77656e2074696620 x16: ffff800008305ec4 x15: 0000000000000002 x14: 1ffff00002b080b0 x13: dfff800000000000 x12: 0000000000040000 x11: 000000000003ffff x10: 0000000000000003 x9 : 0000000000000000 x8 : 00000000000000e0 x7 : ffff800011ef220c x6 : 0000000000000000 x5 : 0000000000000000 x4 : 0000000000000001 x3 : 0000000000000000 x2 : 0000000000000002 x1 : ffff8000122ac6e0 x0 : ffff80019ebea000 Call trace: arch_local_irq_enable arch/arm64/include/asm/irqflags.h:35 [inline] __local_bh_enable_ip+0x238/0x470 kernel/softirq.c:401 __raw_spin_unlock_bh include/linux/spinlock_api_smp.h:167 [inline] _raw_spin_unlock_bh+0x48/0x58 kernel/locking/spinlock.c:210 spin_unlock_bh include/linux/spinlock.h:396 [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_hard_if_event+0x41c/0xdfc notifier_call_chain kernel/notifier.c:87 [inline] raw_notifier_call_chain+0xd4/0x164 kernel/notifier.c:455 call_netdevice_notifiers_info net/core/dev.c:1970 [inline] call_netdevice_notifiers_mtu+0x16c/0x208 net/core/dev.c:2045 dev_set_mtu_ext+0x3c4/0x540 net/core/dev.c:8727 do_setlink+0x7f8/0x333c net/core/rtnetlink.c:2764 __rtnl_newlink net/core/rtnetlink.c:3576 [inline] rtnl_newlink+0x1424/0x1b74 net/core/rtnetlink.c:3623 rtnetlink_rcv_msg+0x72c/0xd94 net/core/rtnetlink.c:6121 netlink_rcv_skb+0x20c/0x3b8 net/netlink/af_netlink.c:2508 rtnetlink_rcv+0x28/0x38 net/core/rtnetlink.c:6139 netlink_unicast_kernel net/netlink/af_netlink.c:1326 [inline] netlink_unicast+0x65c/0x898 net/netlink/af_netlink.c:1352 netlink_sendmsg+0x834/0xb18 net/netlink/af_netlink.c:1874 sock_sendmsg_nosec net/socket.c:718 [inline] __sock_sendmsg net/socket.c:730 [inline] ____sys_sendmsg+0x55c/0x848 net/socket.c:2514 ___sys_sendmsg net/socket.c:2568 [inline] __sys_sendmsg+0x26c/0x33c net/socket.c:2597 __do_sys_sendmsg net/socket.c:2606 [inline] __se_sys_sendmsg net/socket.c:2604 [inline] __arm64_sys_sendmsg+0x80/0x94 net/socket.c:2604 __invoke_syscall arch/arm64/kernel/syscall.c:38 [inline] invoke_syscall+0x98/0x2c0 arch/arm64/kernel/syscall.c:52 el0_svc_common+0x138/0x258 arch/arm64/kernel/syscall.c:142 do_el0_svc+0x64/0x218 arch/arm64/kernel/syscall.c:206 el0_svc+0x58/0x168 arch/arm64/kernel/entry-common.c:637 el0t_64_sync_handler+0x84/0xf0 arch/arm64/kernel/entry-common.c:655 el0t_64_sync+0x18c/0x190 arch/arm64/kernel/entry.S:585