bridge0: received packet on bridge_slave_0 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): P8583/1:b..l
rcu: (detected by 0, t=10503 jiffies, g=25069, q=1247 ncpus=2)
task:syz.0.695 state:R running task stack:26008 pid:8583 tgid:8581 ppid:5825 task_flags:0x400040 flags:0x00080000
Call Trace:
context_switch kernel/sched/core.c:5298 [inline]
__schedule+0x15dd/0x52d0 kernel/sched/core.c:6911
preempt_schedule_irq+0x4d/0xa0 kernel/sched/core.c:7238
irqentry_exit+0x599/0x620 kernel/entry/common.c:239
asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:697
RIP: 0010:rcu_is_watching+0x67/0xb0 kernel/rcu/tree.c:753
Code: 89 f7 e8 9c 44 85 00 48 c7 c3 98 29 1e 93 49 03 1e 48 89 d8 48 c1 e8 03 42 0f b6 04 38 84 c0 75 34 8b 03 65 ff 0d 69 22 72 11 <74> 11 83 e0 04 c1 e8 02 5b 41 5e 41 5f e9 c7 1a 08 0a cc e8 51 f0
RSP: 0018:ffffc9000c6bed18 EFLAGS: 00000286
RAX: 0000000000025084 RBX: ffff8880b8633998 RCX: 0000000080000001
RDX: 0000000019c3d7a4 RSI: ffffffff8c27d560 RDI: ffffffff8c27d520
RBP: dffffc0000000000 R08: ffffffff81768a55 R09: ffffffff8e75e5a0
R10: ffffc9000c6bee58 R11: ffffffff81b0dc10 R12: 1ffff920018d7dc1
R13: ffffc9000c6bee40 R14: ffffffff8e1b5790 R15: dffffc0000000000
rcu_read_lock include/linux/rcupdate.h:851 [inline]
class_rcu_constructor include/linux/rcupdate.h:1193 [inline]
unwind_next_frame+0xd4/0x23c0 arch/x86/kernel/unwind_orc.c:495
arch_stack_walk+0x11b/0x150 arch/x86/kernel/stacktrace.c:25
stack_trace_save+0xa9/0x100 kernel/stacktrace.c:122
save_stack+0x122/0x230 mm/page_owner.c:165
__set_page_owner+0x8d/0x4c0 mm/page_owner.c:341
set_page_owner include/linux/page_owner.h:32 [inline]
post_alloc_hook+0x231/0x280 mm/page_alloc.c:1889
prep_new_page mm/page_alloc.c:1897 [inline]
get_page_from_freelist+0x24dc/0x2580 mm/page_alloc.c:3962
__alloc_frozen_pages_noprof+0x18d/0x380 mm/page_alloc.c:5250
alloc_pages_mpol+0x232/0x4a0 mm/mempolicy.c:2490
folio_alloc_mpol_noprof+0x39/0x70 mm/mempolicy.c:2509
shmem_alloc_folio mm/shmem.c:1930 [inline]
shmem_alloc_and_add_folio+0x445/0xf80 mm/shmem.c:1972
shmem_get_folio_gfp+0x5a9/0x1670 mm/shmem.c:2567
shmem_fault+0x179/0x390 mm/shmem.c:2768
__do_fault+0x138/0x390 mm/memory.c:5364
do_read_fault mm/memory.c:5799 [inline]
do_fault mm/memory.c:5933 [inline]
do_pte_missing+0x228f/0x3490 mm/memory.c:4477
handle_pte_fault mm/memory.c:6317 [inline]
__handle_mm_fault mm/memory.c:6455 [inline]
handle_mm_fault+0x1bec/0x3310 mm/memory.c:6624
faultin_page mm/gup.c:1126 [inline]
__get_user_pages+0x165b/0x29d0 mm/gup.c:1428
populate_vma_page_range+0x2be/0x3c0 mm/gup.c:1860
__mm_populate+0x25f/0x390 mm/gup.c:1963
mm_populate include/linux/mm.h:3894 [inline]
vm_mmap_pgoff+0x3aa/0x4f0 mm/util.c:586
do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
do_syscall_64+0x14d/0xf80 arch/x86/entry/syscall_64.c:94
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f6eccb9c819
RSP: 002b:00007f6ecd9e0028 EFLAGS: 00000246 ORIG_RAX: 0000000000000009
RAX: ffffffffffffffda RBX: 00007f6ecce15fa0 RCX: 00007f6eccb9c819
RDX: b635773f06ebbeee RSI: 0000000000b36000 RDI: 0000200000000000
RBP: 00007f6eccc32c91 R08: ffffffffffffffff R09: 0000000000000000
R10: 0000000000008031 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f6ecce16038 R14: 00007f6ecce15fa0 R15: 00007fff7e5c3bd8
rcu: rcu_preempt kthread starved for 2283 jiffies! g25069 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:28120 pid:16 tgid:16 ppid:2 task_flags:0x208040 flags:0x00080000
Call Trace:
context_switch kernel/sched/core.c:5298 [inline]
__schedule+0x15dd/0x52d0 kernel/sched/core.c:6911
__schedule_loop kernel/sched/core.c:6993 [inline]
schedule+0x164/0x360 kernel/sched/core.c:7008
schedule_timeout+0x158/0x2c0 kernel/time/sleep_timeout.c:99
rcu_gp_fqs_loop+0x312/0x11d0 kernel/rcu/tree.c:2095
rcu_gp_kthread+0x9e/0x2b0 kernel/rcu/tree.c:2297
kthread+0x388/0x470 kernel/kthread.c:436
ret_from_fork+0x51e/0xb90 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:
CPU: 0 UID: 0 PID: 6760 Comm: kworker/u8:31 Not tainted syzkaller #0 PREEMPT(full)
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026
Workqueue: wg-kex-wg2 wg_packet_handshake_send_worker
RIP: 0010:ip6t_get_target include/uapi/linux/netfilter_ipv6/ip6_tables.h:265 [inline]
RIP: 0010:ip6t_get_target_c net/ipv6/netfilter/ip6_tables.c:144 [inline]
RIP: 0010:ip6t_do_table+0xbea/0x1560 net/ipv6/netfilter/ip6_tables.c:323
Code: e8 03 42 80 3c 28 00 74 08 4c 89 e7 e8 ef c9 c3 f7 49 ff 04 24 43 0f b6 04 2f 84 c0 48 8b 9c 24 e8 00 00 00 0f 85 b0 05 00 00 <45> 0f b7 be 8c 00 00 00 4f 8d 24 3e 49 83 c4 08 4c 89 e0 48 c1 e8
RSP: 0018:ffffc90000007880 EFLAGS: 00000246
RAX: 0000000000000000 RBX: ffff88804f7a9581 RCX: ffff8880562c5b80
RDX: 0000000000000100 RSI: 0000000000000000 RDI: ffffe8ffffcc3008
RBP: ffffc90000007a80 R08: ffffc900000079ef R09: 0000000000000000
R10: ffffc900000079d0 R11: fffff52000000f3e R12: ffffe8ffffcc3000
R13: dffffc0000000000 R14: ffff88803311d040 R15: 1ffff11006623a19
FS: 0000000000000000(0000) GS:ffff888125451000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000055e52eee60c8 CR3: 000000000e54c000 CR4: 00000000003526f0
Call Trace:
nf_hook_entry_hookfn include/linux/netfilter.h:158 [inline]
nf_hook_slow+0xc5/0x220 net/netfilter/core.c:623
nf_hook include/linux/netfilter.h:273 [inline]
NF_HOOK+0x21f/0x3c0 include/linux/netfilter.h:316
__netif_receive_skb_one_core net/core/dev.c:6181 [inline]
__netif_receive_skb net/core/dev.c:6294 [inline]
process_backlog+0x7dd/0x1950 net/core/dev.c:6645
__napi_poll+0xae/0x340 net/core/dev.c:7709
napi_poll net/core/dev.c:7772 [inline]
net_rx_action+0x627/0xf70 net/core/dev.c:7929
handle_softirqs+0x22a/0x870 kernel/softirq.c:622
do_softirq+0x76/0xd0 kernel/softirq.c:523
__local_bh_enable_ip+0xf8/0x130 kernel/softirq.c:450
blake2s_compress+0xf9/0x1eb0 lib/crypto/x86/blake2s.h:42
blake2s_update+0x14b/0x450 lib/crypto/blake2s.c:119
hmac+0x2d3/0x3b0 drivers/net/wireguard/noise.c:332
kdf drivers/net/wireguard/noise.c:367 [inline]
message_ephemeral+0x255/0x310 drivers/net/wireguard/noise.c:493
wg_noise_handshake_create_initiation+0x257/0x830 drivers/net/wireguard/noise.c:545
wg_packet_send_handshake_initiation drivers/net/wireguard/send.c:34 [inline]
wg_packet_handshake_send_worker+0x18d/0x350 drivers/net/wireguard/send.c:51
process_one_work kernel/workqueue.c:3276 [inline]
process_scheduled_works+0xb6e/0x18c0 kernel/workqueue.c:3359
worker_thread+0xa53/0xfc0 kernel/workqueue.c:3440
kthread+0x388/0x470 kernel/kthread.c:436
ret_from_fork+0x51e/0xb90 arch/x86/kernel/process.c:158
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245
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:4e:30:cc:ef:7c:ee, vlan:0)
bridge0: received packet on veth0_to_bridge with own address as source address (addr:4e:30:cc:ef:7c:ee, vlan:0)
bridge0: received packet on veth0_to_bridge with own address as source address (addr:4e:30:cc:ef:7c:ee, vlan:0)
bridge0: received packet on bridge_slave_0 with own address as source address (addr:aa:aa:aa:aa:aa:0c, vlan:0)
net_ratelimit: 15535 callbacks suppressed
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 bridge_slave_0 with own address as source address (addr:aa:aa:aa:aa:aa:1b, 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 bridge_slave_0 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:aa:aa:aa:aa:aa:0c, vlan:0)