bridge0: received packet on veth0_to_bridge with own address as source address (addr:0a:5b:63:3b:da:79, vlan:0)
rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
rcu: Tasks blocked on level-0 rcu_node (CPUs 0-1): P17625/1:b..l
rcu: (detected by 0, t=10503 jiffies, g=75293, q=1906 ncpus=2)
task:syz-executor state:R running task stack:21928 pid:17625 tgid:17625 ppid:17605 task_flags:0x400140 flags:0x00080000
Call Trace:
context_switch kernel/sched/core.c:5295 [inline]
__schedule+0x1585/0x5340 kernel/sched/core.c:6907
preempt_schedule_irq+0x4d/0xa0 kernel/sched/core.c:7234
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:lock_release+0x7f/0x3d0 kernel/locking/lockdep.c:5881
Code: b6 0d 70 0e 00 0f 84 1c 02 00 00 65 8b 05 99 59 7a 11 85 c0 0f 85 0d 02 00 00 65 4c 8b 3d e1 13 7a 11 41 83 bf 14 0b 00 00 00 <0f> 85 f7 01 00 00 49 81 3e 20 94 df 93 0f 84 ea 01 00 00 9c 5b fa
RSP: 0018:ffffc9000be7f7d0 EFLAGS: 00000246
RAX: 0000000000000000 RBX: ffffffff90b47c01 RCX: 0000000080000001
RDX: ffffc9000be7f901 RSI: ffffffff8c27a9e0 RDI: ffffffff8c27a9a0
RBP: dffffc0000000000 R08: ffffc9000be7fb70 R09: 0000000000000000
R10: ffffc9000be7f958 R11: fffff520017cff2d R12: ffffc9000be7fb80
R13: ffffffff81767a45 R14: ffffffff8e7602e0 R15: ffff8880411e1e40
rcu_lock_release include/linux/rcupdate.h:322 [inline]
rcu_read_unlock include/linux/rcupdate.h:881 [inline]
class_rcu_destructor include/linux/rcupdate.h:1193 [inline]
unwind_next_frame+0x1aaa/0x23c0 arch/x86/kernel/unwind_orc.c:695
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
__reset_page_owner+0x71/0x1f0 mm/page_owner.c:320
reset_page_owner include/linux/page_owner.h:25 [inline]
__free_pages_prepare mm/page_alloc.c:1433 [inline]
__free_frozen_pages+0xc2b/0xdb0 mm/page_alloc.c:2978
__slab_free+0x263/0x2b0 mm/slub.c:5532
qlink_free mm/kasan/quarantine.c:163 [inline]
qlist_free_all+0x97/0x100 mm/kasan/quarantine.c:179
kasan_quarantine_reduce+0x148/0x160 mm/kasan/quarantine.c:286
__kasan_slab_alloc+0x22/0x80 mm/kasan/common.c:350
kasan_slab_alloc include/linux/kasan.h:253 [inline]
slab_post_alloc_hook mm/slub.c:4501 [inline]
slab_alloc_node mm/slub.c:4830 [inline]
kmem_cache_alloc_noprof+0x2bc/0x650 mm/slub.c:4837
alloc_filename fs/namei.c:142 [inline]
do_getname+0x2e/0x250 fs/namei.c:182
getname_flags fs/namei.c:225 [inline]
class_filename_flags_constructor include/linux/fs.h:2541 [inline]
user_path_at+0x2a/0x160 fs/namei.c:3611
ksys_umount fs/namespace.c:2062 [inline]
__do_sys_umount fs/namespace.c:2070 [inline]
__se_sys_umount fs/namespace.c:2068 [inline]
__x64_sys_umount+0xf6/0x170 fs/namespace.c:2068
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: 0033:0x7efd0139d9d7
RSP: 002b:00007fffe9a262c8 EFLAGS: 00000246 ORIG_RAX: 00000000000000a6
RAX: ffffffffffffffda RBX: 00007efd01431f90 RCX: 00007efd0139d9d7
RDX: 0000000000000000 RSI: 0000000000000009 RDI: 00007fffe9a26380
RBP: 00007fffe9a26380 R08: 00007fffe9a27380 R09: 00000000ffffffff
R10: 0000000000000000 R11: 0000000000000246 R12: 00007fffe9a27410
R13: 00007efd01431f90 R14: 000000000006fec5 R15: 00007fffe9a27450
rcu: rcu_preempt kthread starved for 632 jiffies! g75293 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:27664 pid:16 tgid:16 ppid:2 task_flags:0x208040 flags:0x00080000
Call Trace:
context_switch kernel/sched/core.c:5295 [inline]
__schedule+0x1585/0x5340 kernel/sched/core.c:6907
__schedule_loop kernel/sched/core.c:6989 [inline]
schedule+0x164/0x360 kernel/sched/core.c:7004
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:467
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:
Sending NMI from CPU 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 UID: 0 PID: 14218 Comm: kworker/u8:31 Not tainted syzkaller #0 PREEMPT(full)
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2026
Workqueue: wg-kex-wg2 wg_packet_handshake_send_worker
RIP: 0010:arch_irqs_disabled_flags arch/x86/include/asm/irqflags.h:146 [inline]
RIP: 0010:arch_irqs_disabled arch/x86/include/asm/irqflags.h:153 [inline]
RIP: 0010:lock_release+0x26d/0x3d0 kernel/locking/lockdep.c:5892
Code: e8 38 2f 00 00 48 8b 5c 24 08 48 c7 c7 3f 34 16 8e e8 b7 cf 0b 0a b8 ff ff ff ff 65 0f c1 05 9a 57 7a 11 83 f8 01 75 2e 9c 58 00 02 00 00 75 42 f7 c3 00 02 00 00 75 47 65 48 8b 05 ec 11 7a
RSP: 0018:ffffc90000a085e0 EFLAGS: 00000046
RAX: 0000000000000046 RBX: 0000000000000202 RCX: 0000000080000302
RDX: 0000000000000005 RSI: ffffffff8e16343f RDI: ffffffff8c27aa00
RBP: ffff88807e9c4860 R08: ffff88807e9c3c80 R09: 0000000000000002
R10: 00000000ffffffff R11: 0000000000000100 R12: 0000000000000005
R13: 0000000000000005 R14: ffff88801b312058 R15: ffff88807e9c3c80
FS: 0000000000000000(0000) GS:ffff888125564000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fffe9a25c70 CR3: 00000000795cc000 CR4: 00000000003526f0
Call Trace:
__raw_read_unlock_bh include/linux/rwlock_api_smp.h:279 [inline]
_raw_read_unlock_bh+0x1b/0x40 kernel/locking/spinlock.c:284
ebt_do_table+0x2665/0x2830 net/bridge/netfilter/ebtables.c:-1
nf_hook_entry_hookfn include/linux/netfilter.h:158 [inline]
nf_hook_bridge_pre net/bridge/br_input.c:291 [inline]
br_handle_frame+0x1277/0x1510 net/bridge/br_input.c:442
__netif_receive_skb_core+0x98f/0x31a0 net/core/dev.c:6054
__netif_receive_skb_one_core net/core/dev.c:6165 [inline]
__netif_receive_skb net/core/dev.c:6280 [inline]
process_backlog+0x76d/0x1950 net/core/dev.c:6631
__napi_poll+0xae/0x340 net/core/dev.c:7695
napi_poll net/core/dev.c:7758 [inline]
net_rx_action+0x627/0xf70 net/core/dev.c:7910
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_final+0x116/0x270 lib/crypto/blake2s.c:142
hmac+0x20c/0x3b0 drivers/net/wireguard/noise.c:325
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:3275 [inline]
process_scheduled_works+0xb02/0x1830 kernel/workqueue.c:3358
worker_thread+0xa50/0xfc0 kernel/workqueue.c:3439
kthread+0x388/0x470 kernel/kthread.c:467
ret_from_fork+0x51e/0xb90 arch/x86/kernel/process.c:158
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245
net_ratelimit: 15693 callbacks suppressed
bridge0: received packet on veth0_to_bridge with own address as source address (addr:0a:5b:63:3b:da:79, 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:0a:5b:63:3b:da:79, 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:0a:5b:63:3b:da:79, 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:0a:5b:63:3b:da:79, 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:0a:5b:63:3b:da:79, vlan:0)
bridge0: received packet on veth0_to_bridge with own address as source address (addr:aa:aa:aa:aa:aa:0c, vlan:0)
net_ratelimit: 16229 callbacks suppressed
bridge0: received packet on veth0_to_bridge with own address as source address (addr:0a:5b:63:3b:da:79, vlan:0)
bridge0: received packet on veth0_to_bridge with own address as source address (addr:0a:5b:63:3b:da:79, vlan:0)
bridge0: received packet on veth0_to_bridge with own address as source address (addr:0a:5b:63:3b:da:79, vlan:0)
bridge0: received packet on veth0_to_bridge with own address as source address (addr:0a:5b:63:3b:da:79, vlan:0)
bridge0: received packet on veth0_to_bridge with own address as source address (addr:0a:5b:63:3b:da:79, vlan:0)
bridge0: received packet on veth0_to_bridge with own address as source address (addr:0a:5b:63:3b:da:79, vlan:0)
bridge0: received packet on veth0_to_bridge with own address as source address (addr:0a:5b:63:3b:da:79, vlan:0)
bridge0: received packet on veth0_to_bridge with own address as source address (addr:0a:5b:63:3b:da:79, 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:0a:5b:63:3b:da:79, vlan:0)