bridge0: received packet on veth1_to_bridge with own address as source address (addr:aa:aa:aa:aa:aa:1c, vlan:0)
bridge0: received packet on veth1_to_bridge with own address as source address (addr:aa:aa:aa:aa:aa:1c, vlan:0)
Dropped outbound packet type=88ca
Dropped outbound packet type=88ca
Dropped outbound packet type=88ca
rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
rcu: Tasks blocked on level-0 rcu_node (CPUs 0-1): P7198/1:b..l
rcu: (detected by 1, t=10746 jiffies, g=213429, q=857 ncpus=2)
task:syz.1.7393 state:R running task stack:24360 pid:7198 tgid:7198 ppid:32764 task_flags:0x400040 flags:0x00080000
Call Trace:
context_switch kernel/sched/core.c:5533 [inline]
__schedule+0x17db/0x58f0 kernel/sched/core.c:7284
preempt_schedule_common+0x7f/0xd0 kernel/sched/core.c:7463
preempt_schedule_thunk+0x16/0x40 arch/x86/entry/thunk.S:12
__raw_spin_unlock include/linux/spinlock_api_smp.h:201 [inline]
_raw_spin_unlock+0x41/0x50 kernel/locking/spinlock.c:213
spin_unlock include/linux/spinlock.h:401 [inline]
insert_page+0x2db/0x440 mm/memory.c:2539
kcov_mmap+0xc9/0x140 kernel/kcov.c:527
vfs_mmap include/linux/fs.h:2064 [inline]
mmap_file mm/internal.h:238 [inline]
__mmap_new_file_vma mm/vma.c:2603 [inline]
__mmap_new_vma mm/vma.c:2676 [inline]
__mmap_region mm/vma.c:2889 [inline]
mmap_region+0x1bfc/0x25b0 mm/vma.c:2974
do_mmap+0xe0a/0x1300 mm/mmap.c:573
vm_mmap_pgoff+0x272/0x4e0 mm/util.c:581
ksys_mmap_pgoff+0x4dc/0x760 mm/mmap.c:619
do_syscall_x64 arch/x86/entry/syscall_64.c:61 [inline]
do_syscall_64+0x166/0x520 arch/x86/entry/syscall_64.c:84
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f09d319dec2
RSP: 002b:00007ffc27f98ff8 EFLAGS: 00000206 ORIG_RAX: 0000000000000009
RAX: ffffffffffffffda RBX: 00007f09d0fd5000 RCX: 00007f09d319dec2
RDX: 0000000000000003 RSI: 0000000000400000 RDI: 00007f09d0fd5000
RBP: 0000000000000011 R08: 00000000000000db R09: 0000000000000000
R10: 0000000000000011 R11: 0000000000000206 R12: 0000000000000003
R13: 0000000000000003 R14: 0000000000000000 R15: 00007f09d3425fa0
rcu: rcu_preempt kthread starved for 5210 jiffies! g213429 f0x0 RCU_GP_WAIT_FQS(5) ->state=R ->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:26752 pid:17 tgid:17 ppid:2 task_flags:0x208040 flags:0x00080000
Call Trace:
context_switch kernel/sched/core.c:5533 [inline]
__schedule+0x17db/0x58f0 kernel/sched/core.c:7284
__schedule_loop kernel/sched/core.c:7361 [inline]
schedule+0x164/0x2b0 kernel/sched/core.c:7376
schedule_timeout+0x152/0x2c0 kernel/time/sleep_timeout.c:99
rcu_gp_fqs_loop+0x30c/0x11f0 kernel/rcu/tree.c:2122
rcu_gp_kthread+0x9e/0x2b0 kernel/rcu/tree.c:2330
kthread+0x38b/0x480 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: 19941 Comm: kworker/0:34 Not tainted syzkaller #0 PREEMPT(full)
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/24/2026
Workqueue: events_power_efficient wg_ratelimiter_gc_entries
RIP: 0010:trace_local_timer_exit arch/x86/include/asm/trace/irq_vectors.h:40 [inline]
RIP: 0010:__sysvec_apic_timer_interrupt+0x136/0x430 arch/x86/kernel/apic/apic.c:1069
Code: 1f 12 83 f8 08 0f 83 e7 00 00 00 89 c3 c1 e8 06 48 8d 3c c5 78 a0 79 90 be 08 00 00 00 e8 12 aa c2 00 48 0f a3 1d c2 56 04 0f <73> 0d e8 53 31 37 00 84 c0 0f 84 d3 00 00 00 48 c7 c7 40 00 09 8c
RSP: 0018:ffffc90000005d38 EFLAGS: 00000057
RAX: 0000000000000001 RBX: 0000000000000000 RCX: ffffffff817549ae
RDX: 0000000000000000 RSI: 0000000000000008 RDI: ffffffff9079a078
RBP: 0000000000000000 R08: ffffffff9079a07f R09: 1ffffffff20f340f
R10: dffffc0000000000 R11: fffffbfff20f3410 R12: dffffc0000000000
R13: 0000000000000000 R14: 1ffff110170c4790 R15: 0000000000000000
FS: 0000000000000000(0000) GS:ffff888124cda000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000200000001000 CR3: 0000000059b12000 CR4: 00000000003526f0
Call Trace:
instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1062 [inline]
sysvec_apic_timer_interrupt+0x52/0xc0 arch/x86/kernel/apic/apic.c:1062
asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:674
RIP: 0010:lock_release+0x2e1/0x3c0 kernel/locking/lockdep.c:5968
Code: 2a f1 11 00 00 00 00 eb b5 e8 1b 6b 42 0a f7 c3 00 02 00 00 74 b9 65 48 8b 05 b3 e5 f0 11 48 3b 44 24 28 75 48 fb 48 83 c4 30 <5b> 41 5c 41 5d 41 5e 41 5f 5d e9 90 6f 45 0a cc 48 8d 3d 68 63 d9
RSP: 0018:ffffc90000005e28 EFLAGS: 00000286
RAX: 519619fb0e7be600 RBX: 0000000000000206 RCX: 8000000000000501
RDX: ffffc90000005f01 RSI: ffffffff8e688e6a RDI: ffffffff8c6dad80
RBP: ffff88803c36cb70 R08: ffffc900000070f8 R09: 0000000000000000
R10: ffffc90000005f58 R11: fffff52000000bed R12: 0000000000000008
R13: 0000000000000008 R14: ffffffff8ed5c8a0 R15: ffff88803c36be80
rcu_lock_release include/linux/rcupdate.h:319 [inline]
rcu_read_unlock include/linux/rcupdate.h:880 [inline]
class_rcu_destructor include/linux/rcupdate.h:1216 [inline]
unwind_next_frame+0x1baa/0x2550 arch/x86/kernel/unwind_orc.c:709
arch_stack_walk+0x11b/0x150 arch/x86/kernel/stacktrace.c:25
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
kasan_save_free_info+0x40/0x50 mm/kasan/generic.c:584
poison_slab_object mm/kasan/common.c:264 [inline]
__kasan_slab_free+0x5c/0x80 mm/kasan/common.c:296
kasan_slab_free include/linux/kasan.h:235 [inline]
slab_free_hook mm/slub.c:2748 [inline]
slab_free mm/slub.c:6508 [inline]
kmem_cache_free+0x182/0x650 mm/slub.c:6635
packet_rcv_spkt+0x437/0x5b0 net/packet/af_packet.c:-1
dev_queue_xmit_nit+0xa2c/0xac0 net/core/dev.c:2668
xmit_one net/core/dev.c:3985 [inline]
dev_hard_start_xmit+0x1c1/0x830 net/core/dev.c:4005
__dev_queue_xmit+0x14d1/0x3920 net/core/dev.c:4994
dev_queue_xmit include/linux/netdevice.h:3462 [inline]
vlan_dev_hard_start_xmit+0x202/0x420 net/8021q/vlan_dev.c:131
__netdev_start_xmit include/linux/netdevice.h:5433 [inline]
netdev_start_xmit include/linux/netdevice.h:5442 [inline]
xmit_one net/core/dev.c:3989 [inline]
dev_hard_start_xmit+0x2cd/0x830 net/core/dev.c:4005
__dev_queue_xmit+0x14d1/0x3920 net/core/dev.c:4994
dev_queue_xmit include/linux/netdevice.h:3462 [inline]
br_dev_queue_push_xmit+0x370/0x4b0 net/bridge/br_forward.c:67
NF_HOOK+0x64e/0x6e0 include/linux/netfilter.h:325
br_nf_post_routing+0xa51/0xee0 net/bridge/br_netfilter_hooks.c:964
nf_hook_entry_hookfn include/linux/netfilter.h:165 [inline]
nf_hook_slow+0xc5/0x220 net/netfilter/core.c:633
nf_hook include/linux/netfilter.h:280 [inline]
NF_HOOK+0x23e/0x3f0 include/linux/netfilter.h:323
br_forward_finish+0xd3/0x130 net/bridge/br_forward.c:80
br_nf_hook_thresh net/bridge/br_netfilter_hooks.c:1165 [inline]
br_nf_forward_finish+0xa76/0xea0 net/bridge/br_netfilter_hooks.c:667
NF_HOOK+0x64e/0x6e0 include/linux/netfilter.h:325
br_nf_forward_ip+0x7e7/0xa30 net/bridge/br_netfilter_hooks.c:721
nf_hook_entry_hookfn include/linux/netfilter.h:165 [inline]
nf_hook_slow+0xc5/0x220 net/netfilter/core.c:633
nf_hook include/linux/netfilter.h:280 [inline]
NF_HOOK+0x23e/0x3f0 include/linux/netfilter.h:323
__br_forward+0x41e/0x5d0 net/bridge/br_forward.c:130
deliver_clone net/bridge/br_forward.c:146 [inline]
maybe_deliver+0x373/0x5b0 net/bridge/br_forward.c:212
br_flood+0x142/0x650 net/bridge/br_forward.c:345
br_handle_frame_finish+0x11fc/0x1ae0 net/bridge/br_input.c:231
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:325 [inline]
br_nf_pre_routing_ipv6+0x382/0x6f0 net/bridge/br_netfilter_ipv6.c:183
nf_hook_entry_hookfn include/linux/netfilter.h:165 [inline]
nf_hook_bridge_pre net/bridge/br_input.c:293 [inline]
br_handle_frame+0x1329/0x1600 net/bridge/br_input.c:453
__netif_receive_skb_core+0x989/0x30c0 net/core/dev.c:6220
__netif_receive_skb_one_core net/core/dev.c:6331 [inline]
__netif_receive_skb net/core/dev.c:6446 [inline]
process_backlog+0x727/0x18b0 net/core/dev.c:6797
__napi_poll+0xaa/0x330 net/core/dev.c:7866
napi_poll net/core/dev.c:7929 [inline]
net_rx_action+0x61d/0xf50 net/core/dev.c:8086
handle_softirqs+0x226/0x860 kernel/softirq.c:645
__do_softirq kernel/softirq.c:679 [inline]
invoke_softirq kernel/softirq.c:519 [inline]
__irq_exit_rcu+0xcb/0x220 kernel/softirq.c:758
irq_exit_rcu+0x9/0x30 kernel/softirq.c:775
instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1062 [inline]
sysvec_apic_timer_interrupt+0xa6/0xc0 arch/x86/kernel/apic/apic.c:1062
asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:674
RIP: 0010:lock_release+0x2e1/0x3c0 kernel/locking/lockdep.c:5968
Code: 2a f1 11 00 00 00 00 eb b5 e8 1b 6b 42 0a f7 c3 00 02 00 00 74 b9 65 48 8b 05 b3 e5 f0 11 48 3b 44 24 28 75 48 fb 48 83 c4 30 <5b> 41 5c 41 5d 41 5e 41 5f 5d e9 90 6f 45 0a cc 48 8d 3d 68 63 d9
RSP: 0018:ffffc900052f7a40 EFLAGS: 00000282
RAX: 519619fb0e7be600 RBX: 0000000000000287 RCX: 8000000000000001
RDX: 0000000000000000 RSI: ffffffff8e688e6a RDI: ffffffff8c6dad80
RBP: ffff88803c36ca80 R08: 0000000000000003 R09: 0000000000000004
R10: dffffc0000000000 R11: fffff52000a5ef40 R12: 0000000000000002
R13: 0000000000000002 R14: ffffffff8f996af8 R15: ffff88803c36be80
__raw_spin_unlock include/linux/spinlock_api_smp.h:199 [inline]
_raw_spin_unlock+0x16/0x50 kernel/locking/spinlock.c:213
spin_unlock include/linux/spinlock.h:401 [inline]
wg_ratelimiter_gc_entries+0x382/0x450 drivers/net/wireguard/ratelimiter.c:76
process_one_work kernel/workqueue.c:3396 [inline]
process_scheduled_works+0xc3d/0x1630 kernel/workqueue.c:3479
worker_thread+0xa47/0xfb0 kernel/workqueue.c:3560
kthread+0x38b/0x480 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: 1958 callbacks suppressed
bridge0: received packet on veth1_to_bridge with own address as source address (addr:aa:aa:aa:aa:aa:1c, vlan:0)