tipc: Node identity aed44a6fa655, cluster identity 4711 tipc: Enabled bearer , priority 0 syzkaller0: entered promiscuous mode syzkaller0: entered allmulticast mode BUG: MAX_LOCKDEP_CHAINS too low! turning off the locking correctness validator. CPU: 0 UID: 0 PID: 13613 Comm: syz.1.1111 Tainted: G L syzkaller #0 PREEMPT Tainted: [L]=SOFTLOCKUP Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/02/2026 Call trace: show_stack+0x2c/0x3c arch/arm64/kernel/stacktrace.c:499 (C) __dump_stack+0x30/0x40 lib/dump_stack.c:94 dump_stack_lvl+0xd8/0x12c lib/dump_stack.c:120 dump_stack+0x1c/0x28 lib/dump_stack.c:129 add_chain_cache kernel/locking/lockdep.c:-1 [inline] lookup_chain_cache_add kernel/locking/lockdep.c:3855 [inline] validate_chain kernel/locking/lockdep.c:3876 [inline] __lock_acquire+0xfdc/0x2ebc kernel/locking/lockdep.c:5237 lock_acquire+0x140/0x364 kernel/locking/lockdep.c:5868 __raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:132 [inline] _raw_spin_lock_irqsave+0x5c/0x7c kernel/locking/spinlock.c:166 class_raw_spinlock_irqsave_constructor include/linux/spinlock.h:572 [inline] try_to_wake_up+0x68/0xdc4 kernel/sched/core.c:4292 default_wake_function+0x58/0x74 kernel/sched/core.c:7568 __wake_up_common+0x104/0x180 kernel/sched/wait.c:108 __wake_up_common_lock+0x4c/0x78 kernel/sched/wait.c:125 __wake_up+0x18/0x24 kernel/sched/wait.c:146 netlink_unlock_table net/netlink/af_netlink.c:462 [inline] netlink_broadcast_filtered+0xc78/0xd58 net/netlink/af_netlink.c:1543 nlmsg_multicast_filtered include/net/netlink.h:1165 [inline] nlmsg_multicast include/net/netlink.h:1184 [inline] nlmsg_notify+0xf8/0x1dc net/netlink/af_netlink.c:2599 rtnl_notify+0xa0/0xd8 net/core/rtnetlink.c:963 inet6_rt_notify+0x42c/0x488 net/ipv6/route.c:6393 fib6_add_rt2node+0x12f0/0x29c8 net/ipv6/ip6_fib.c:1290 fib6_add+0x730/0x14b0 net/ipv6/ip6_fib.c:1535 __ip6_ins_rt+0x60/0x84 net/ipv6/route.c:1356 ip6_route_add+0xd0/0x1b4 net/ipv6/route.c:3970 addrconf_add_mroute+0x14c/0x1d0 net/ipv6/addrconf.c:2568 addrconf_add_dev+0xe4/0x188 net/ipv6/addrconf.c:2586 addrconf_dev_config net/ipv6/addrconf.c:3507 [inline] addrconf_init_auto_addrs+0x304/0x764 net/ipv6/addrconf.c:3595 addrconf_notify+0x7a0/0xbe8 net/ipv6/addrconf.c:3775 notifier_call_chain+0x1a4/0x624 kernel/notifier.c:85 raw_notifier_call_chain+0x3c/0x50 kernel/notifier.c:453 call_netdevice_notifiers_info+0xb8/0x120 net/core/dev.c:2250 call_netdevice_notifiers_extack net/core/dev.c:2288 [inline] call_netdevice_notifiers net/core/dev.c:2302 [inline] __dev_notify_flags+0x160/0x27c net/core/dev.c:9793 netif_change_flags+0xd0/0x15c net/core/dev.c:9822 dev_change_flags+0x10c/0x204 net/core/dev_api.c:68 dev_ifsioc+0x364/0xc74 net/core/dev_ioctl.c:555 dev_ioctl+0x4a8/0xcf0 net/core/dev_ioctl.c:816 sock_do_ioctl+0x198/0x254 net/socket.c:1314 sock_ioctl+0x55c/0x7ec net/socket.c:1421 vfs_ioctl fs/ioctl.c:51 [inline] __do_sys_ioctl fs/ioctl.c:597 [inline] __se_sys_ioctl fs/ioctl.c:583 [inline] __arm64_sys_ioctl+0x14c/0x1c4 fs/ioctl.c:583 __invoke_syscall arch/arm64/kernel/syscall.c:35 [inline] invoke_syscall+0x98/0x244 arch/arm64/kernel/syscall.c:49 el0_svc_common+0xec/0x23c arch/arm64/kernel/syscall.c:121 do_el0_svc+0x4c/0x5c arch/arm64/kernel/syscall.c:140 el0_svc+0x64/0x260 arch/arm64/kernel/entry-common.c:736 el0t_64_sync_handler+0x48/0x148 arch/arm64/kernel/entry-common.c:755 el0t_64_sync+0x198/0x19c arch/arm64/kernel/entry.S:594 sch_tbf: burst 127 is lower than device syzkaller0 mtu (1514) ! netlink: 'syz.1.1111': attribute type 1 has an invalid length. netlink: 'syz.1.1111': attribute type 2 has an invalid length. netlink: 12 bytes leftover after parsing attributes in process `syz.1.1111'. tipc: Resetting bearer