watchdog: BUG: soft lockup - CPU#0 stuck for 26s! [syz-executor.5:13834] Modules linked in: irq event stamp: 20232413 hardirqs last enabled at (20232412): [] __local_bh_enable_ip+0x258/0x4d0 kernel/softirq.c:388 hardirqs last disabled at (20232413): [] enter_el1_irq_or_nmi+0x10/0x1c arch/arm64/kernel/entry-common.c:227 softirqs last enabled at (1636): [] softirq_handle_end kernel/softirq.c:401 [inline] softirqs last enabled at (1636): [] __do_softirq+0xcac/0xf48 kernel/softirq.c:587 softirqs last disabled at (1642): [] spin_lock_bh include/linux/spinlock.h:368 [inline] softirqs last disabled at (1642): [] batadv_tt_local_resize_to_mtu+0x60/0x150 net/batman-adv/translation-table.c:3950 CPU: 0 PID: 13834 Comm: syz-executor.5 Not tainted 5.15.98-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/02/2023 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 : ffff800027356890 x29: ffff8000273568a0 x28: 0000000000000100 x27: ffff0000d59dd398 x26: ffff0000d6ab5c00 x25: ffff0000d8e1b408 x24: 0000000000000001 x23: 1fffe0001ae8b001 x22: dfff800000000000 x21: ffff8000117ce388 x20: 0000000000000000 x19: ffff0000d7458008 x18: 0000000000000202 x17: ff80800008337080 x16: ffff8000082ed72c x15: ffff800008337080 x14: 1ffff0000292606a x13: ffffffffffffffff x12: 0000000000040000 x11: 000000000003ffff x10: 0000000000000003 x9 : 0000000000000000 x8 : 00000000000000e0 x7 : 0000000000000000 x6 : 0000000000000000 x5 : 0000000000000000 x4 : 0000000000000000 x3 : ffff800008046698 x2 : 0000000000000002 x1 : ffff800011acb5e0 x0 : ffff80019ff71000 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:1357 batadv_tt_local_resize_to_mtu+0x9c/0x150 net/batman-adv/translation-table.c:3957 batadv_update_min_mtu net/batman-adv/hard-interface.c:635 [inline] batadv_hardif_activate_interface+0x1a8/0x234 net/batman-adv/hard-interface.c:662 batadv_hardif_enable_interface+0x4e8/0x770 net/batman-adv/hard-interface.c:745 batadv_softif_slave_add+0x80/0x148 net/batman-adv/soft-interface.c:839 do_set_master net/core/rtnetlink.c:2523 [inline] __rtnl_newlink net/core/rtnetlink.c:3479 [inline] rtnl_newlink+0x1570/0x1ab8 net/core/rtnetlink.c:3510 rtnetlink_rcv_msg+0x998/0xcc8 net/core/rtnetlink.c:5587 netlink_rcv_skb+0x20c/0x3b8 net/netlink/af_netlink.c:2533 rtnetlink_rcv+0x28/0x38 net/core/rtnetlink.c:5605 netlink_unicast_kernel net/netlink/af_netlink.c:1330 [inline] netlink_unicast+0x664/0x938 net/netlink/af_netlink.c:1356 netlink_sendmsg+0x814/0xb00 net/netlink/af_netlink.c:1952 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 :584