ICMPv6: NA: aa:aa:aa:aa:aa:1b advertised our address fe80::a8aa:aaff:feaa:aa1b on veth0_to_bridge!
rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
rcu: Tasks blocked on level-0 rcu_node (CPUs 0-1): P24132/1:b..l
rcu: (detected by 1, t=10503 jiffies, g=126669, q=2959 ncpus=2)
task:syz.4.4665 state:R running task stack:25800 pid:24132 tgid:24131 ppid:18523 task_flags:0x400140 flags:0x00080002
Call Trace:
context_switch kernel/sched/core.c:5388 [inline]
__schedule+0x1840/0x57a0 kernel/sched/core.c:7189
preempt_schedule_irq+0x4d/0xa0 kernel/sched/core.c:7513
irqentry_exit_to_kernel_mode include/linux/irq-entry-common.h:539 [inline]
irqentry_exit+0x14f/0x8e0 kernel/entry/common.c:164
asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:697
RIP: 0010:unwind_get_return_address+0x6/0x90 arch/x86/kernel/unwind_orc.c:381
Code: e0 b9 00 4c 89 f7 4c 89 fe e9 29 ff ff ff e8 51 b6 2b 0a 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 f3 0f 1e fa 41 57 <41> 56 53 48 89 fb 49 be 00 00 00 00 00 fc ff df 48 89 f8 48 c1 e8
RSP: 0018:ffffc900046ef3d8 EFLAGS: 00000202
RAX: 00000000f21a2b01 RBX: ffffc900046ef4a0 RCX: 0000000000000046
RDX: 0000000000000002 RSI: ffffffff8e213e8d RDI: ffffc900046ef3e8
RBP: ffffc900046ef470 R08: ffffc900046ef778 R09: 0000000000000000
R10: ffffc900046ef438 R11: fffff520008dde89 R12: ffff88801ff85d00
R13: ffff888028b1f680 R14: ffffffff81b071b0 R15: ffffc900046ef3e8
arch_stack_walk+0xfb/0x150 arch/x86/kernel/stacktrace.c:26
stack_trace_save+0xa9/0x100 kernel/stacktrace.c:122
kasan_save_stack mm/kasan/common.c:57 [inline]
kasan_save_track+0x3e/0x80 mm/kasan/common.c:78
poison_kmalloc_redzone mm/kasan/common.c:398 [inline]
__kasan_kmalloc+0x93/0xb0 mm/kasan/common.c:415
kasan_kmalloc include/linux/kasan.h:263 [inline]
__kmalloc_cache_noprof+0x318/0x660 mm/slub.c:5420
kmalloc_noprof include/linux/slab.h:950 [inline]
kzalloc_noprof include/linux/slab.h:1188 [inline]
sctp_add_bind_addr+0x8c/0x370 net/sctp/bind_addr.c:150
sctp_copy_local_addr_list+0x31a/0x4e0 net/sctp/protocol.c:168
sctp_bind_addr_copy+0xb3/0x3c0 net/sctp/bind_addr.c:56
sctp_connect_new_asoc+0x2ff/0x6b0 net/sctp/socket.c:1096
sctp_sendmsg_new_asoc net/sctp/socket.c:1692 [inline]
sctp_sendmsg+0x159b/0x2d00 net/sctp/socket.c:2012
sock_sendmsg_nosec net/socket.c:788 [inline]
__sock_sendmsg net/socket.c:802 [inline]
__sys_sendto+0x5de/0x710 net/socket.c:2266
__do_sys_sendto net/socket.c:2273 [inline]
__se_sys_sendto net/socket.c:2269 [inline]
__x64_sys_sendto+0xde/0x100 net/socket.c:2269
do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
do_syscall_64+0x174/0x580 arch/x86/entry/syscall_64.c:94
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f9b3799ce59
RSP: 002b:00007f9b3885a028 EFLAGS: 00000246 ORIG_RAX: 000000000000002c
RAX: ffffffffffffffda RBX: 00007f9b37c15fa0 RCX: 00007f9b3799ce59
RDX: 0000000000000001 RSI: 0000200000000340 RDI: 0000000000000004
RBP: 00007f9b37a32d6f R08: 0000200000000240 R09: 000000000000001c
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f9b37c16038 R14: 00007f9b37c15fa0 R15: 00007ffce5fc11e8
rcu: rcu_preempt kthread starved for 933 jiffies! g126669 f0x0 RCU_GP_WAIT_FQS(5) ->state=0x0 ->cpu=0
rcu: Unless rcu_preempt kthread gets sufficient CPU time, OOM is now expected behavior.
rcu: RCU grace-period kthread stack dump:
task:rcu_preempt state:R running task stack:27456 pid:16 tgid:16 ppid:2 task_flags:0x208040 flags:0x00080000
Call Trace:
context_switch kernel/sched/core.c:5388 [inline]
__schedule+0x1840/0x57a0 kernel/sched/core.c:7189
__schedule_loop kernel/sched/core.c:7268 [inline]
schedule+0x164/0x360 kernel/sched/core.c:7283
schedule_timeout+0x152/0x2c0 kernel/time/sleep_timeout.c:99
rcu_gp_fqs_loop+0x30c/0x11f0 kernel/rcu/tree.c:2095
rcu_gp_kthread+0x9e/0x2b0 kernel/rcu/tree.c:2297
kthread+0x389/0x470 kernel/kthread.c:436
ret_from_fork+0x514/0xb70 arch/x86/kernel/process.c:158
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245
rcu: Stack dump where RCU GP kthread last ran:
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 UID: 0 PID: 48 Comm: kworker/u8:3 Not tainted syzkaller #0 PREEMPT(full)
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/09/2026
Workqueue: wg-kex-wg1 wg_packet_handshake_send_worker
RIP: 0010:__lock_is_held kernel/locking/lockdep.c:5598 [inline]
RIP: 0010:lock_is_held_type+0x90/0x150 kernel/locking/lockdep.c:5940
Code: 00 00 00 7e 48 4c 89 eb 48 81 c3 90 0b 00 00 45 31 ff 49 83 ff 31 73 24 48 89 df 4c 89 f6 e8 f7 01 00 00 85 c0 75 2a 49 ff c7 <49> 63 85 88 0b 00 00 48 83 c3 28 49 39 c7 7c d8 eb 11 48 c7 c7 90
RSP: 0018:ffffc900000073c0 EFLAGS: 00000002
RAX: 0000000000000000 RBX: ffff8880226ec990 RCX: 0000000080000101
RDX: ffff8880226ebe00 RSI: ffffffff8e95c780 RDI: ffff8880226ec990
RBP: 00000000ffffffff R08: ffff88808f665ee3 R09: 1ffff11011eccbdc
R10: dffffc0000000000 R11: ffffed1011eccbdd R12: 0000000000000246
R13: ffff8880226ebe00 R14: ffffffff8e95c780 R15: 0000000000000001
FS: 0000000000000000(0000) GS:ffff8881252b9000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000055863d198a38 CR3: 000000007c8fc000 CR4: 00000000003526f0
Call Trace:
nbp_vlan_group_rcu net/bridge/br_private.h:1658 [inline]
__br_forward+0x68/0x540 net/bridge/br_forward.c:86
br_handle_frame_finish+0x10f8/0x1930 net/bridge/br_input.c:229
br_nf_hook_thresh+0x3dd/0x4c0 net/bridge/br_netfilter_hooks.c:-1
br_nf_pre_routing_finish_ipv6+0x90c/0xc40 net/bridge/br_netfilter_ipv6.c:-1
NF_HOOK include/linux/netfilter.h:318 [inline]
br_nf_pre_routing_ipv6+0x382/0x6f0 net/bridge/br_netfilter_ipv6.c:183
nf_hook_entry_hookfn include/linux/netfilter.h:158 [inline]
nf_hook_bridge_pre net/bridge/br_input.c:291 [inline]
br_handle_frame+0x1272/0x1510 net/bridge/br_input.c:442
__netif_receive_skb_core+0x989/0x30b0 net/core/dev.c:6089
__netif_receive_skb_one_core net/core/dev.c:6200 [inline]
__netif_receive_skb net/core/dev.c:6315 [inline]
process_backlog+0x706/0x1860 net/core/dev.c:6666
__napi_poll+0xaa/0x330 net/core/dev.c:7733
napi_poll net/core/dev.c:7796 [inline]
net_rx_action+0x61d/0xf50 net/core/dev.c:7953
handle_softirqs+0x225/0x840 kernel/softirq.c:622
do_softirq+0x76/0xd0 kernel/softirq.c:523
__local_bh_enable_ip+0xf8/0x130 kernel/softirq.c:450
blake2s_compress+0xfa/0x1c00 lib/crypto/x86/blake2s.h:42
blake2s_update+0x140/0x450 lib/crypto/blake2s.c:119
hmac+0x2d1/0x3b0 drivers/net/wireguard/noise.c:332
kdf+0x184/0x290 drivers/net/wireguard/noise.c:375
mix_dh drivers/net/wireguard/noise.c:413 [inline]
wg_noise_handshake_create_initiation+0x29e/0x810 drivers/net/wireguard/noise.c:550
wg_packet_send_handshake_initiation drivers/net/wireguard/send.c:34 [inline]
wg_packet_handshake_send_worker+0x18c/0x370 drivers/net/wireguard/send.c:51
process_one_work kernel/workqueue.c:3314 [inline]
process_scheduled_works+0xa8e/0x14e0 kernel/workqueue.c:3397
worker_thread+0xa47/0xfb0 kernel/workqueue.c:3478
kthread+0x389/0x470 kernel/kthread.c:436
ret_from_fork+0x514/0xb70 arch/x86/kernel/process.c:158
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245
net_ratelimit: 17252 callbacks suppressed
ICMPv6: NA: aa:aa:aa:aa:aa:1b advertised our address fe80::a8aa:aaff:feaa:aa1b on veth0_to_bridge!
bridge0: received packet on bridge_slave_1 with own address as source address (addr:aa:aa:aa:aa:aa:1c, vlan:0)
ICMPv6: NA: aa:aa:aa:aa:aa:1b advertised our address fe80::a8aa:aaff:feaa:aa1b on veth0_to_bridge!
bridge0: received packet on veth1_to_bridge with own address as source address (addr:aa:aa:aa:aa:aa:0c, vlan:0)
ICMPv6: NA: aa:aa:aa:aa:aa:1b advertised our address fe80::a8aa:aaff:feaa:aa1b on veth0_to_bridge!
bridge0: received packet on bridge_slave_1 with own address as source address (addr:aa:aa:aa:aa:aa:0c, vlan:0)
ICMPv6: NA: aa:aa:aa:aa:aa:1b advertised our address fe80::a8aa:aaff:feaa:aa1b on veth0_to_bridge!
bridge0: received packet on veth1_to_bridge with own address as source address (addr:aa:aa:aa:aa:aa:0c, vlan:0)
ICMPv6: NA: aa:aa:aa:aa:aa:1b advertised our address fe80::a8aa:aaff:feaa:aa1b on veth0_to_bridge!
bridge0: received packet on veth1_to_bridge with own address as source address (addr:aa:aa:aa:aa:aa:0c, vlan:0)