bridge0: received packet on veth0_to_bridge with own address as source address (addr:aa:aa:aa:aa:aa:0c, vlan:0)
rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
rcu: Tasks blocked on level-0 rcu_node (CPUs 0-1): P10516/1:b..l
rcu: (detected by 0, t=10503 jiffies, g=29157, q=3191 ncpus=2)
task:syz.4.1505 state:R running task stack:22680 pid:10516 tgid:10510 ppid:5846 task_flags:0x400140 flags:0x00004006
Call Trace:
context_switch kernel/sched/core.c:5396 [inline]
__schedule+0x16f5/0x4d00 kernel/sched/core.c:6785
preempt_schedule_irq+0xb5/0x150 kernel/sched/core.c:7108
irqentry_exit+0x6f/0x90 kernel/entry/common.c:307
asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:702
RIP: 0010:deref_stack_reg+0x1a7/0x230 arch/x86/kernel/unwind_orc.c:406
Code: 46 49 8d 40 08 48 39 d8 0f 97 c1 4c 39 f0 0f 96 c0 20 c8 3c 01 75 30 4c 89 c7 49 89 f7 e8 11 08 00 00 49 89 c6 48 8b 5c 24 18 <48> 89 d8 48 c1 e8 03 42 80 3c 38 00 74 08 48 89 df e8 43 19 b1 00
RSP: 0018:ffffc9000c35e440 EFLAGS: 00000202
RAX: ffffc9000c35e6f0 RBX: ffffc9000c35e608 RCX: 0000000000000001
RDX: ffffc9000c35e608 RSI: dffffc0000000000 RDI: ffffc9000c35e650
RBP: 1ffff9200186bcb9 R08: ffffc9000c35e650 R09: 0000000000000000
R10: ffffc9000c35e618 R11: fffff5200186bcc5 R12: 1ffff9200186bcba
R13: 1ffff9200186bcbb R14: ffffc9000c35e6f0 R15: dffffc0000000000
unwind_next_frame+0x17c4/0x2390 arch/x86/kernel/unwind_orc.c:-1
__unwind_start+0x5b9/0x760 arch/x86/kernel/unwind_orc.c:758
unwind_start arch/x86/include/asm/unwind.h:64 [inline]
arch_stack_walk+0xe4/0x150 arch/x86/kernel/stacktrace.c:24
stack_trace_save+0x9c/0xe0 kernel/stacktrace.c:122
save_stack+0xf5/0x1f0 mm/page_owner.c:156
__reset_page_owner+0x71/0x1f0 mm/page_owner.c:308
reset_page_owner include/linux/page_owner.h:25 [inline]
free_pages_prepare mm/page_alloc.c:1248 [inline]
__free_frozen_pages+0xc71/0xe70 mm/page_alloc.c:2706
discard_slab mm/slub.c:2717 [inline]
__put_partials+0x161/0x1c0 mm/slub.c:3186
put_cpu_partial+0x17c/0x250 mm/slub.c:3261
__slab_free+0x2f7/0x400 mm/slub.c:4513
qlink_free mm/kasan/quarantine.c:163 [inline]
qlist_free_all+0x97/0x140 mm/kasan/quarantine.c:179
kasan_quarantine_reduce+0x148/0x160 mm/kasan/quarantine.c:286
__kasan_slab_alloc+0x22/0x80 mm/kasan/common.c:329
kasan_slab_alloc include/linux/kasan.h:250 [inline]
slab_post_alloc_hook mm/slub.c:4148 [inline]
slab_alloc_node mm/slub.c:4197 [inline]
__do_kmalloc_node mm/slub.c:4327 [inline]
__kmalloc_node_track_caller_noprof+0x216/0x4e0 mm/slub.c:4347
kmemdup_noprof+0x2b/0x70 mm/util.c:137
kmemdup_noprof include/linux/fortify-string.h:765 [inline]
mpls_dev_sysctl_register+0xbd/0x270 net/mpls/af_mpls.c:1390
mpls_add_dev net/mpls/af_mpls.c:1460 [inline]
mpls_dev_notify+0x357/0x7a0 net/mpls/af_mpls.c:1600
notifier_call_chain+0x1b3/0x3e0 kernel/notifier.c:85
call_netdevice_notifiers_extack net/core/dev.c:2268 [inline]
call_netdevice_notifiers net/core/dev.c:2282 [inline]
register_netdevice+0x1608/0x1ae0 net/core/dev.c:11184
register_vlan_dev+0x3cb/0x800 net/8021q/vlan.c:179
vlan_newlink+0x4b2/0x610 net/8021q/vlan_netlink.c:194
rtnl_newlink_create+0x310/0xb00 net/core/rtnetlink.c:3823
__rtnl_newlink net/core/rtnetlink.c:3940 [inline]
rtnl_newlink+0x16d6/0x1c70 net/core/rtnetlink.c:4055
rtnetlink_rcv_msg+0x7cf/0xb70 net/core/rtnetlink.c:6944
netlink_rcv_skb+0x205/0x470 net/netlink/af_netlink.c:2534
netlink_unicast_kernel net/netlink/af_netlink.c:1313 [inline]
netlink_unicast+0x758/0x8d0 net/netlink/af_netlink.c:1339
netlink_sendmsg+0x805/0xb30 net/netlink/af_netlink.c:1883
sock_sendmsg_nosec net/socket.c:714 [inline]
__sock_sendmsg+0x21c/0x270 net/socket.c:729
____sys_sendmsg+0x505/0x830 net/socket.c:2614
___sys_sendmsg+0x21f/0x2a0 net/socket.c:2668
__sys_sendmsg net/socket.c:2700 [inline]
__do_sys_sendmsg net/socket.c:2705 [inline]
__se_sys_sendmsg net/socket.c:2703 [inline]
__x64_sys_sendmsg+0x19b/0x260 net/socket.c:2703
do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
do_syscall_64+0xfa/0x3b0 arch/x86/entry/syscall_64.c:94
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fb31078e929
RSP: 002b:00007fb3116c1038 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
RAX: ffffffffffffffda RBX: 00007fb3109b6080 RCX: 00007fb31078e929
RDX: 0000000000000000 RSI: 0000200000000280 RDI: 0000000000000039
RBP: 00007fb310810b39 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000000 R14: 00007fb3109b6080 R15: 00007ffc52299bd8
rcu: rcu_preempt kthread starved for 1247 jiffies! g29157 f0x0 RCU_GP_WAIT_FQS(5) ->state=0x0 ->cpu=1
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:26664 pid:16 tgid:16 ppid:2 task_flags:0x208040 flags:0x00004000
Call Trace:
context_switch kernel/sched/core.c:5396 [inline]
__schedule+0x16f5/0x4d00 kernel/sched/core.c:6785
__schedule_loop kernel/sched/core.c:6863 [inline]
schedule+0x165/0x360 kernel/sched/core.c:6878
schedule_timeout+0x12b/0x270 kernel/time/sleep_timeout.c:99
rcu_gp_fqs_loop+0x301/0x1540 kernel/rcu/tree.c:2054
rcu_gp_kthread+0x99/0x390 kernel/rcu/tree.c:2256
kthread+0x70e/0x8a0 kernel/kthread.c:464
ret_from_fork+0x3f9/0x770 arch/x86/kernel/process.c:148
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 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 UID: 0 PID: 6174 Comm: kworker/u8:19 Not tainted 6.16.0-rc2-syzkaller-00867-ga9b24b3583ae #0 PREEMPT(full)
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025
Workqueue: wg-kex-wg1 wg_packet_handshake_send_worker
RIP: 0010:lock_is_held include/linux/lockdep.h:249 [inline]
RIP: 0010:rcu_read_lock_held+0x22/0x50 kernel/rcu/update.c:351
Code: 90 90 90 90 90 90 90 90 f3 0f 1e fa 53 e8 16 9a c1 09 85 c0 74 26 31 db e8 fb 2d 01 00 84 c0 74 20 e8 82 74 01 00 84 c0 74 17 <48> c7 c7 a0 ed 13 8e be ff ff ff ff 5b e9 fc 95 c1 09 bb 01 00 00
RSP: 0018:ffffc90000a07590 EFLAGS: 00000202
RAX: 1ffffffff1c28801 RBX: 0000000000000000 RCX: 0f8b378a8760fd00
RDX: ffff8880256ada00 RSI: ffffffff8be28b60 RDI: ffff8880b873afa8
RBP: ffffc90000a076f8 R08: ffffc90000a07820 R09: ffffc90000a07830
R10: ffffc90000a07680 R11: fffff52000140ed2 R12: 1ffff1100b66eb0c
R13: dffffc0000000000 R14: ffff88805b38c800 R15: ffffc90000a077f8
FS: 0000000000000000(0000) GS:ffff888125d49000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007ff1560de035 CR3: 0000000032b5e000 CR4: 00000000003526f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
__find_rr_leaf+0x345/0x6d0 net/ipv6/route.c:834
find_rr_leaf net/ipv6/route.c:890 [inline]
rt6_select net/ipv6/route.c:934 [inline]
fib6_table_lookup+0x39f/0xa80 net/ipv6/route.c:2233
ip6_pol_route+0x222/0x1180 net/ipv6/route.c:2269
pol_lookup_func include/net/ip6_fib.h:617 [inline]
__fib6_rule_action net/ipv6/fib6_rules.c:237 [inline]
fib6_rule_action+0x674/0x7d0 net/ipv6/fib6_rules.c:275
fib_rules_lookup+0x767/0xe90 net/core/fib_rules.c:339
fib6_rule_lookup+0x18e/0x6f0 net/ipv6/fib6_rules.c:112
ip6_route_input_lookup net/ipv6/route.c:2338 [inline]
ip6_route_input+0x6ce/0xa50 net/ipv6/route.c:2641
ip6_rcv_finish+0x141/0x2d0 net/ipv6/ip6_input.c:77
ip_sabotage_in+0x1e1/0x270 net/bridge/br_netfilter_hooks.c:993
nf_hook_entry_hookfn include/linux/netfilter.h:157 [inline]
nf_hook_slow+0xc2/0x220 net/netfilter/core.c:623
nf_hook include/linux/netfilter.h:272 [inline]
NF_HOOK+0x206/0x3a0 include/linux/netfilter.h:315
__netif_receive_skb_one_core net/core/dev.c:5975 [inline]
__netif_receive_skb+0xd3/0x380 net/core/dev.c:6088
netif_receive_skb_internal net/core/dev.c:6174 [inline]
netif_receive_skb+0x1cb/0x790 net/core/dev.c:6233
NF_HOOK+0x9d/0x390 include/linux/netfilter.h:318
br_handle_frame_finish+0x14d1/0x19b0 net/bridge/br_input.c:-1
br_nf_hook_thresh+0x3c3/0x4a0 net/bridge/br_netfilter_hooks.c:-1
br_nf_pre_routing_finish_ipv6+0x948/0xd00 net/bridge/br_netfilter_ipv6.c:-1
NF_HOOK include/linux/netfilter.h:317 [inline]
br_nf_pre_routing_ipv6+0x37e/0x6b0 net/bridge/br_netfilter_ipv6.c:184
nf_hook_entry_hookfn include/linux/netfilter.h:157 [inline]
nf_hook_bridge_pre net/bridge/br_input.c:283 [inline]
br_handle_frame+0x97f/0x14c0 net/bridge/br_input.c:434
__netif_receive_skb_core+0x10de/0x4180 net/core/dev.c:5861
__netif_receive_skb_one_core net/core/dev.c:5973 [inline]
__netif_receive_skb+0x72/0x380 net/core/dev.c:6088
process_backlog+0x60e/0x14f0 net/core/dev.c:6440
__napi_poll+0xc7/0x480 net/core/dev.c:7453
napi_poll net/core/dev.c:7517 [inline]
net_rx_action+0x707/0xe30 net/core/dev.c:7644
handle_softirqs+0x286/0x870 kernel/softirq.c:579
do_softirq+0xec/0x180 kernel/softirq.c:480
__local_bh_enable_ip+0x17d/0x1c0 kernel/softirq.c:407
local_bh_enable include/linux/bottom_half.h:33 [inline]
fpregs_unlock arch/x86/include/asm/fpu/api.h:77 [inline]
kernel_fpu_end+0xd2/0x120 arch/x86/kernel/fpu/core.c:476
blake2s_compress+0x5f/0xd0 arch/x86/lib/crypto/blake2s-glue.c:46
blake2s_final+0x116/0x260 lib/crypto/blake2s.c:54
hmac+0x293/0x330 drivers/net/wireguard/noise.c:333
kdf drivers/net/wireguard/noise.c:360 [inline]
message_ephemeral+0x1c0/0x280 drivers/net/wireguard/noise.c:493
wg_noise_handshake_create_initiation+0x27c/0x7e0 drivers/net/wireguard/noise.c:545
wg_packet_send_handshake_initiation drivers/net/wireguard/send.c:34 [inline]
wg_packet_handshake_send_worker+0x163/0x320 drivers/net/wireguard/send.c:51
process_one_work kernel/workqueue.c:3238 [inline]
process_scheduled_works+0xae1/0x17b0 kernel/workqueue.c:3321
worker_thread+0x8a0/0xda0 kernel/workqueue.c:3402
kthread+0x70e/0x8a0 kernel/kthread.c:464
ret_from_fork+0x3f9/0x770 arch/x86/kernel/process.c:148
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245
net_ratelimit: 15045 callbacks suppressed
bridge0: received packet on bridge_slave_0 with own address as source address (addr:aa:aa:aa:aa:aa:0c, vlan:0)
bridge0: received packet on bridge_slave_0 with own address as source address (addr:aa:aa:aa:aa:aa:1b, vlan:0)
bridge0: received packet on veth0_to_bridge with own address as source address (addr:aa:aa:aa:aa:aa:0c, vlan:0)
bridge0: received packet on veth0_to_bridge with own address as source address (addr:3e:8c:e1:15:a5:62, vlan:0)
bridge0: received packet on veth0_to_bridge with own address as source address (addr:3e:8c:e1:15:a5:62, vlan:0)
bridge0: received packet on veth0_to_bridge with own address as source address (addr:3e:8c:e1:15:a5:62, vlan:0)
bridge0: received packet on bridge_slave_0 with own address as source address (addr:aa:aa:aa:aa:aa:0c, vlan:0)
bridge0: received packet on bridge_slave_0 with own address as source address (addr:aa:aa:aa:aa:aa:1b, vlan:0)
bridge0: received packet on veth0_to_bridge with own address as source address (addr:aa:aa:aa:aa:aa:0c, vlan:0)
bridge0: received packet on veth0_to_bridge with own address as source address (addr:3e:8c:e1:15:a5:62, vlan:0)