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)
bridge0: received packet on bridge_slave_0 with own address as source address (addr:aa:aa:aa:aa:aa:1b, vlan:0)
rcu: INFO: rcu_preempt self-detected stall on CPU
rcu: 1-....: (9971 ticks this GP) idle=d424/1/0x4000000000000000 softirq=10786/11068 fqs=3952
rcu: hardirqs softirqs csw/system
rcu: number: 2097861 971 0
rcu: cputime: 37946 14526 34 ==> 52490(ms)
rcu: (t=10500 jiffies g=9617 q=3597 ncpus=2)
CPU: 1 PID: 5868 Comm: syz.3.11 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2026
RIP: 0010:__raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:152 [inline]
RIP: 0010:_raw_spin_unlock_irqrestore+0xc0/0x120 kernel/locking/spinlock.c:194
Code: c7 44 24 20 00 00 00 00 9c 8f 44 24 20 f7 44 24 20 00 02 00 00 41 c6 04 07 f8 75 4b f7 c3 00 02 00 00 74 01 fb bf 01 00 00 00 <e8> 1b 69 ce f6 65 8b 05 ec 9f 75 75 85 c0 74 3c 48 c7 04 24 0e 36
RSP: 0018:ffffc900001efe80 EFLAGS: 00000206
RAX: dffffc0000000004 RBX: 0000000000000a02 RCX: 807a2cf107a63000
RDX: dffffc0000000000 RSI: ffffffff8acac900 RDI: 0000000000000001
RBP: ffffc900001eff18 R08: ffffffff911bf507 R09: 1ffffffff2237ea0
R10: dffffc0000000000 R11: fffffbfff2237ea1 R12: dffffc0000000000
R13: ffff888025412d80 R14: ffffffff974e50f8 R15: 1ffff9200003dfd0
FS: 00007ff6672c26c0(0000) GS:ffff8880b8f00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fb59374da08 CR3: 000000005c206000 CR4: 00000000003506e0
Call Trace:
<IRQ>
__debug_check_no_obj_freed lib/debugobjects.c:999 [inline]
debug_check_no_obj_freed+0x51f/0x540 lib/debugobjects.c:1020
slab_free_hook mm/slub.c:1786 [inline]
slab_free_freelist_hook+0xd2/0x1a0 mm/slub.c:1837
slab_free mm/slub.c:3830 [inline]
kmem_cache_free+0xf8/0x270 mm/slub.c:3852
skb_kfree_head net/core/skbuff.c:947 [inline]
skb_free_head net/core/skbuff.c:961 [inline]
skb_release_data+0x60a/0x800 net/core/skbuff.c:991
skb_release_all net/core/skbuff.c:1057 [inline]
__kfree_skb net/core/skbuff.c:1071 [inline]
consume_skb+0xb2/0x110 net/core/skbuff.c:1287
netlink_broadcast_filtered+0x101c/0x1110 net/netlink/af_netlink.c:1538
netlink_broadcast net/netlink/af_netlink.c:1560 [inline]
nlmsg_multicast include/net/netlink.h:1090 [inline]
nlmsg_notify+0xf0/0x1a0 net/netlink/af_netlink.c:2588
br_fdb_update+0x476/0x630 net/bridge/br_fdb.c:904
br_handle_frame_finish+0x5fc/0x19b0 net/bridge/br_input.c:141
br_nf_hook_thresh+0x3cd/0x4a0 net/bridge/br_netfilter_hooks.c:1184
br_nf_pre_routing_finish_ipv6+0x9dc/0xd00 net/bridge/br_netfilter_ipv6.c:-1
NF_HOOK include/linux/netfilter.h:304 [inline]
br_nf_pre_routing_ipv6+0x349/0x6b0 net/bridge/br_netfilter_ipv6.c:184
nf_hook_entry_hookfn include/linux/netfilter.h:144 [inline]
nf_hook_bridge_pre net/bridge/br_input.c:277 [inline]
br_handle_frame+0x1245/0x14d0 net/bridge/br_input.c:424
__netif_receive_skb_core+0xfab/0x3af0 net/core/dev.c:5515
__netif_receive_skb_one_core net/core/dev.c:5619 [inline]
__netif_receive_skb+0x74/0x290 net/core/dev.c:5735
process_backlog+0x391/0x6f0 net/core/dev.c:6063
__napi_poll+0xc0/0x460 net/core/dev.c:6625
napi_poll net/core/dev.c:6692 [inline]
net_rx_action+0x616/0xc40 net/core/dev.c:6828
handle_softirqs+0x280/0x820 kernel/softirq.c:578
__do_softirq kernel/softirq.c:612 [inline]
invoke_softirq kernel/softirq.c:452 [inline]
__irq_exit_rcu+0xd3/0x190 kernel/softirq.c:661
irq_exit_rcu+0x9/0x20 kernel/softirq.c:673
instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1088 [inline]
sysvec_apic_timer_interrupt+0xa4/0xc0 arch/x86/kernel/apic/apic.c:1088
</IRQ>
<TASK>
asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:687
RIP: 0010:get_current arch/x86/include/asm/current.h:41 [inline]
RIP: 0010:__sanitizer_cov_trace_pc+0x8/0x60 kernel/kcov.c:215
Code: 00 00 f3 0f 1e fa 53 48 89 fb e8 13 00 00 00 48 8b 3d cc cb 03 0d 48 89 de 5b e9 d3 5f 57 00 cc cc cc f3 0f 1e fa 48 8b 04 24 <65> 48 8b 0d a0 a0 7c 7e 65 8b 15 a1 a0 7c 7e 81 e2 00 01 ff 00 74
RSP: 0018:ffffc90004a267b0 EFLAGS: 00000246
RAX: ffffffff8a74fc80 RBX: ffff0a0000000600 RCX: 000000008acb8a05
RDX: 0000000000000000 RSI: ffffffff8acb8aa4 RDI: ffffc90004a26a95
RBP: ffffffff8acb8aa5 R08: ffffc90004a26a95 R09: 1ffff92000944d52
R10: dffffc0000000000 R11: fffff52000944d53 R12: ffffc90084a26a8d
R13: ffffc90004a26a96 R14: 0000000000000001 R15: dffffc0000000000
vsnprintf+0x1a90/0x1ba0 lib/vsprintf.c:2773
sprintf+0xe8/0x140 lib/vsprintf.c:3027
print_caller kernel/printk/printk.c:1338 [inline]
info_print_prefix+0x210/0x360 kernel/printk/printk.c:1355
record_print_text+0x177/0x450 kernel/printk/printk.c:1402
printk_get_next_message+0x2ab/0x980 kernel/printk/printk.c:2876
console_emit_next_record kernel/printk/printk.c:2911 [inline]
console_flush_all+0x3a8/0xd20 kernel/printk/printk.c:3000
console_unlock+0xad/0x350 kernel/printk/printk.c:3069
vprintk_emit+0x497/0x610 kernel/printk/printk.c:2341
_printk+0xde/0x130 kernel/printk/printk.c:2366
__nla_validate_parse+0x2672/0x2ea0 lib/nlattr.c:647
__nla_parse+0x40/0x50 lib/nlattr.c:732
__nlmsg_parse include/net/netlink.h:756 [inline]
genl_family_rcv_msg_attrs_parse+0x1c6/0x290 net/netlink/genetlink.c:801
genl_family_rcv_msg_doit+0xce/0x310 net/netlink/genetlink.c:949
genl_family_rcv_msg net/netlink/genetlink.c:1051 [inline]
genl_rcv_msg+0x619/0x7a0 net/netlink/genetlink.c:1066
netlink_rcv_skb+0x241/0x4d0 net/netlink/af_netlink.c:2545
genl_rcv+0x28/0x40 net/netlink/genetlink.c:1075
netlink_unicast_kernel net/netlink/af_netlink.c:1320 [inline]
netlink_unicast+0x751/0x8d0 net/netlink/af_netlink.c:1346
netlink_sendmsg+0x8d0/0xbf0 net/netlink/af_netlink.c:1894
sock_sendmsg_nosec net/socket.c:730 [inline]
__sock_sendmsg net/socket.c:745 [inline]
____sys_sendmsg+0x5ba/0x960 net/socket.c:2594
___sys_sendmsg+0x2a6/0x360 net/socket.c:2648
__sys_sendmsg net/socket.c:2677 [inline]
__do_sys_sendmsg net/socket.c:2686 [inline]
__se_sys_sendmsg+0x1c2/0x2b0 net/socket.c:2684
do_syscall_x64 arch/x86/entry/common.c:46 [inline]
do_syscall_64+0x55/0xa0 arch/x86/entry/common.c:76
entry_SYSCALL_64_after_hwframe+0x68/0xd2
RIP: 0033:0x7ff66639c799
Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 e8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007ff6672c2028 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
RAX: ffffffffffffffda RBX: 00007ff666616090 RCX: 00007ff66639c799
RDX: 0000000000000000 RSI: 0000200000000000 RDI: 000000000000000a
RBP: 00007ff666432bd9 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007ff666616128 R14: 00007ff666616090 R15: 00007fff33948638
</TASK>
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:ba:9f:b0:bd:e7:df, vlan:0)
net_ratelimit: 359 callbacks suppressed
bridge0: received packet on veth0_to_bridge with own address as source address (addr:ba:9f:b0:bd:e7:df, 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 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)
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)
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:ba:9f:b0:bd:e7:df, vlan:0)
bridge0: received packet on veth0_to_bridge with own address as source address (addr:ba:9f:b0:bd:e7:df, vlan:0)
net_ratelimit: 379 callbacks suppressed
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)
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:ba:9f:b0:bd:e7:df, vlan:0)
bridge0: received packet on veth0_to_bridge with own address as source address (addr:ba:9f:b0:bd:e7:df, 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:ba:9f:b0:bd:e7:df, 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 bridge_slave_0 with own address as source address (addr:aa:aa:aa:aa:aa:0c, vlan:0)
net_ratelimit: 377 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 veth0_to_bridge with own address as source address (addr:ba:9f:b0:bd:e7:df, vlan:0)
bridge0: received packet on veth0_to_bridge with own address as source address (addr:ba:9f:b0:bd:e7:df, 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:ba:9f:b0:bd:e7:df, 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 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)
bridge0: received packet on bridge_slave_0 with own address as source address (addr:aa:aa:aa:aa:aa:1b, vlan:0)
net_ratelimit: 387 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: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)
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)
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:ba:9f:b0:bd:e7:df, 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:ba:9f:b0:bd:e7:df, vlan:0)
net_ratelimit: 419 callbacks suppressed
bridge0: received packet on veth0_to_bridge with own address as source address (addr:ba:9f:b0:bd:e7:df, 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:ba:9f:b0:bd:e7:df, 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 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)
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)
bridge0: received packet on bridge_slave_0 with own address as source address (addr:aa:aa:aa:aa:aa:1b, vlan:0)
NMI backtrace for cpu 1
CPU: 1 PID: 5868 Comm: syz.3.11 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2026
RIP: 0010:perf_trace_buf_alloc+0x109/0x290 kernel/trace/trace_event_perf.c:415
Code: 00 00 fc ff df 4d 8d bf e0 67 03 00 4e 8d 24 e5 30 2a a7 8c 4c 89 e0 48 c1 e8 03 42 80 3c 28 00 74 08 4c 89 e7 e8 c7 fc 4f 00 <4d> 03 3c 24 4c 89 f0 48 c1 e8 03 42 80 3c 28 00 74 08 4c 89 f7 e8
RSP: 0018:ffffc900001f0180 EFLAGS: 00000046
RAX: 1ffffffff194e547 RBX: 0000000000000014 RCX: ffff888023a6da00
RDX: 0000000000000100 RSI: 0000000000000001 RDI: 0000000000000008
RBP: 0000000000000001 R08: ffffffff8e8adeaf R09: 1ffffffff1d15bd5
R10: dffffc0000000000 R11: fffffbfff1d15bd6 R12: ffffffff8ca72a38
R13: dffffc0000000000 R14: ffffc900001f0200 R15: 0000000000036888
FS: 00007ff6672c26c0(0000) GS:ffff8880b8f00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fb59374da08 CR3: 000000005c206000 CR4: 00000000003506e0
Call Trace:
<IRQ>
perf_trace_preemptirq_template+0x144/0x330 include/trace/events/preemptirq.h:14
trace_irq_disable+0xbb/0xe0 include/trace/events/preemptirq.h:36
irqentry_enter+0x37/0x50 kernel/entry/common.c:381
sysvec_apic_timer_interrupt+0xe/0xc0 arch/x86/kernel/apic/apic.c:1088
asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:687
RIP: 0010:orc_ip arch/x86/kernel/unwind_orc.c:80 [inline]
RIP: 0010:__orc_find arch/x86/kernel/unwind_orc.c:102 [inline]
RIP: 0010:orc_find arch/x86/kernel/unwind_orc.c:227 [inline]
RIP: 0010:unwind_next_frame+0x4a3/0x2970 arch/x86/kernel/unwind_orc.c:494
Code: 74 24 48 48 89 d8 4c 29 e0 48 89 c1 48 c1 f9 02 48 c1 e8 3f 48 01 c8 48 83 e0 fe 4d 8d 3c 44 4c 89 f8 48 c1 e8 03 0f b6 04 10 <84> c0 75 3e 4d 63 2f 4d 01 fd 4c 89 ef 4c 89 f6 e8 48 dc 4b 00 49
RSP: 0018:ffffc900001f0398 EFLAGS: 00000a06
RAX: 0000000000000000 RBX: ffffffff8eed9b64 RCX: 0000000000000001
RDX: dffffc0000000000 RSI: ffffffff88722dc4 RDI: ffffffff88722d39
RBP: ffffffff8eed9b5c R08: ffffc900001f0530 R09: 0000000000000004
R10: 0000000000000004 R11: 0000000000000100 R12: ffffffff8eed9b60
R13: ffffffff88722d39 R14: ffffffff88722dc4 R15: ffffffff8eed9b60
arch_stack_walk+0x144/0x190 arch/x86/kernel/stacktrace.c:25
stack_trace_save+0xaa/0x100 kernel/stacktrace.c:122
kasan_save_stack mm/kasan/common.c:46 [inline]
kasan_set_track+0x4e/0x70 mm/kasan/common.c:53
__kasan_slab_alloc+0x6c/0x80 mm/kasan/common.c:329
kasan_slab_alloc include/linux/kasan.h:188 [inline]
slab_post_alloc_hook+0x6e/0x4b0 mm/slab.h:767
slab_alloc_node mm/slub.c:3495 [inline]
kmem_cache_alloc_node+0x14c/0x320 mm/slub.c:3540
kmalloc_reserve+0x95/0x240 net/core/skbuff.c:562
__alloc_skb+0x138/0x2c0 net/core/skbuff.c:653
__netdev_alloc_skb+0x10c/0x500 net/core/skbuff.c:717
netdev_alloc_skb include/linux/skbuff.h:3272 [inline]
dev_alloc_skb include/linux/skbuff.h:3285 [inline]
__ieee80211_beacon_get+0xe17/0x1600 net/mac80211/tx.c:5447
ieee80211_beacon_get_tim+0xbf/0x580 net/mac80211/tx.c:5569
ieee80211_beacon_get include/net/mac80211.h:5440 [inline]
mac80211_hwsim_beacon_tx+0x3c7/0x780 drivers/net/wireless/virtual/mac80211_hwsim.c:2265
__iterate_interfaces+0x243/0x500 net/mac80211/util.c:766
ieee80211_iterate_active_interfaces_atomic+0xdb/0x180 net/mac80211/util.c:802
mac80211_hwsim_beacon+0xbb/0x1b0 drivers/net/wireless/virtual/mac80211_hwsim.c:2295
__run_hrtimer kernel/time/hrtimer.c:1750 [inline]
__hrtimer_run_queues+0x52a/0xc40 kernel/time/hrtimer.c:1814
hrtimer_run_softirq+0x187/0x2b0 kernel/time/hrtimer.c:1831
handle_softirqs+0x280/0x820 kernel/softirq.c:578
__do_softirq kernel/softirq.c:612 [inline]
invoke_softirq kernel/softirq.c:452 [inline]
__irq_exit_rcu+0xd3/0x190 kernel/softirq.c:661
irq_exit_rcu+0x9/0x20 kernel/softirq.c:673
instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1088 [inline]
sysvec_apic_timer_interrupt+0xa4/0xc0 arch/x86/kernel/apic/apic.c:1088
</IRQ>
<TASK>
asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:687
RIP: 0010:__sanitizer_cov_trace_switch+0x0/0x120 kernel/kcov.c:329
Code: 05 4c 8d 51 28 4d 39 ca 77 1e 49 ff c0 4c 89 02 48 c7 44 0a 08 07 00 00 00 48 89 7c 0a 10 48 89 74 0a 18 48 89 44 0a 20 c3 90 <f3> 0f 1e fa 48 8b 06 48 8b 4e 08 48 83 c1 f8 48 c1 c1 3d 48 83 f9
RSP: 0018:ffffc90004a268d0 EFLAGS: 00000246
RAX: 0000000000000002 RBX: 00000000ffffe999 RCX: ffff888023a6da00
RDX: 0000000000000002 RSI: ffffffff8d129b00 RDI: 0000000000000002
RBP: ffffffff8d01c5f8 R08: ffffffff8d01c5ff R09: 1ffffffff1a038bf
R10: dffffc0000000000 R11: fffffbfff1a038c0 R12: 00000000ffffe999
R13: 0000000000000002 R14: 00000000ffffe000 R15: 80000000ffffe999
desc_read+0x174/0x3f0 kernel/printk/printk_ringbuffer.c:445
desc_read_finalized_seq kernel/printk/printk_ringbuffer.c:1763 [inline]
prb_read kernel/printk/printk_ringbuffer.c:1811 [inline]
_prb_read_valid+0x285/0xad0 kernel/printk/printk_ringbuffer.c:1891
prb_read_valid+0x3d/0x60 kernel/printk/printk_ringbuffer.c:1940
printk_get_next_message+0x190/0x980 kernel/printk/printk.c:2850
console_emit_next_record kernel/printk/printk.c:2911 [inline]
console_flush_all+0x3a8/0xd20 kernel/printk/printk.c:3000
console_unlock+0xad/0x350 kernel/printk/printk.c:3069
vprintk_emit+0x497/0x610 kernel/printk/printk.c:2341
_printk+0xde/0x130 kernel/printk/printk.c:2366
__nla_validate_parse+0x2672/0x2ea0 lib/nlattr.c:647
__nla_parse+0x40/0x50 lib/nlattr.c:732
__nlmsg_parse include/net/netlink.h:756 [inline]
genl_family_rcv_msg_attrs_parse+0x1c6/0x290 net/netlink/genetlink.c:801
genl_family_rcv_msg_doit+0xce/0x310 net/netlink/genetlink.c:949
genl_family_rcv_msg net/netlink/genetlink.c:1051 [inline]
genl_rcv_msg+0x619/0x7a0 net/netlink/genetlink.c:1066
netlink_rcv_skb+0x241/0x4d0 net/netlink/af_netlink.c:2545
genl_rcv+0x28/0x40 net/netlink/genetlink.c:1075
netlink_unicast_kernel net/netlink/af_netlink.c:1320 [inline]
netlink_unicast+0x751/0x8d0 net/netlink/af_netlink.c:1346
netlink_sendmsg+0x8d0/0xbf0 net/netlink/af_netlink.c:1894
sock_sendmsg_nosec net/socket.c:730 [inline]
__sock_sendmsg net/socket.c:745 [inline]
____sys_sendmsg+0x5ba/0x960 net/socket.c:2594
___sys_sendmsg+0x2a6/0x360 net/socket.c:2648
__sys_sendmsg net/socket.c:2677 [inline]
__do_sys_sendmsg net/socket.c:2686 [inline]
__se_sys_sendmsg+0x1c2/0x2b0 net/socket.c:2684
do_syscall_x64 arch/x86/entry/common.c:46 [inline]
do_syscall_64+0x55/0xa0 arch/x86/entry/common.c:76
entry_SYSCALL_64_after_hwframe+0x68/0xd2
RIP: 0033:0x7ff66639c799
Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 e8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007ff6672c2028 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
RAX: ffffffffffffffda RBX: 00007ff666616090 RCX: 00007ff66639c799
RDX: 0000000000000000 RSI: 0000200000000000 RDI: 000000000000000a
RBP: 00007ff666432bd9 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007ff666616128 R14: 00007ff666616090 R15: 00007fff33948638
</TASK>
net_ratelimit: 398 callbacks suppressed
bridge0: received packet on veth0_to_bridge with own address as source address (addr:ba:9f:b0:bd:e7:df, 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:ba:9f:b0:bd:e7:df, 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 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)
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)
bridge0: received packet on bridge_slave_0 with own address as source address (addr:aa:aa:aa:aa:aa:1b, vlan:0)
net_ratelimit: 353 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: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)
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)
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:ba:9f:b0:bd:e7:df, 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:ba:9f:b0:bd:e7:df, vlan:0)
NMI backtrace for cpu 1
CPU: 1 PID: 5868 Comm: syz.3.11 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2026
RIP: 0010:arch_static_branch arch/x86/include/asm/jump_label.h:27 [inline]
RIP: 0010:static_key_false include/linux/jump_label.h:207 [inline]
RIP: 0010:native_write_msr arch/x86/include/asm/msr.h:147 [inline]
RIP: 0010:wrmsr arch/x86/include/asm/msr.h:254 [inline]
RIP: 0010:native_apic_msr_write+0x39/0x50 arch/x86/include/asm/apic.h:196
Code: 74 2a 83 ff 30 74 25 eb 10 81 ff d0 00 00 00 74 1b 81 ff e0 00 00 00 74 13 c1 ef 04 81 c7 00 08 00 00 89 f9 89 f0 31 d2 0f 30 <66> 90 c3 89 f6 31 d2 e9 8b 4a 23 03 66 2e 0f 1f 84 00 00 00 00 00
RSP: 0018:ffffc900001f0160 EFLAGS: 00000046
RAX: 00000000000000ab RBX: ffff8880b8f28280 RCX: 0000000000000838
RDX: 0000000000000000 RSI: 00000000000000ab RDI: 0000000000000838
RBP: 0000000000000000 R08: ffffffff8e8adeaf R09: 1ffffffff1d15bd5
R10: dffffc0000000000 R11: fffffbfff1d15bd6 R12: dffffc0000000000
R13: 000000001000035a R14: 00000000000000ab R15: 0000000000000020
FS: 00007ff6672c26c0(0000) GS:ffff8880b8f00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fb59374da08 CR3: 000000005c206000 CR4: 00000000003506e0
Call Trace:
<IRQ>
apic_write arch/x86/include/asm/apic.h:404 [inline]
lapic_next_event+0x11/0x20 arch/x86/kernel/apic/apic.c:448
clockevents_program_event+0x1c0/0x310 kernel/time/clockevents.c:334
hrtimer_interrupt+0x5a1/0x9c0 kernel/time/hrtimer.c:1889
local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1077 [inline]
__sysvec_apic_timer_interrupt+0xfb/0x3b0 arch/x86/kernel/apic/apic.c:1094
instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1088 [inline]
sysvec_apic_timer_interrupt+0x51/0xc0 arch/x86/kernel/apic/apic.c:1088
asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:687
RIP: 0010:should_resched arch/x86/include/asm/preempt.h:104 [inline]
RIP: 0010:__local_bh_enable_ip+0x142/0x1c0 kernel/softirq.c:413
Code: 8a e8 92 1e 32 09 65 66 8b 05 ca 51 b1 7e 66 85 c0 75 54 bf 01 00 00 00 e8 cb 1a 0a 00 e8 b6 20 3b 00 fb 65 8b 05 96 51 b1 7e <85> c0 75 05 e8 15 39 ae ff 48 c7 04 24 0e 36 e0 45 4b c7 04 37 00
RSP: 0018:ffffc900001f03c0 EFLAGS: 00000282
RAX: 0000000000000101 RBX: 0000000000000200 RCX: 807a2cf107a63000
RDX: dffffc0000000000 RSI: ffffffff8acac900 RDI: ffffffff8b1c82e0
RBP: ffffc900001f0450 R08: ffffffff911bf507 R09: 1ffffffff2237ea0
R10: dffffc0000000000 R11: fffffbfff2237ea1 R12: ffffffff8950e339
R13: dffffc0000000000 R14: dffffc0000000000 R15: 1ffff9200003e078
local_bh_enable include/linux/bottom_half.h:33 [inline]
ip6t_do_table+0x135e/0x1510 net/ipv6/netfilter/ip6_tables.c:375
nf_hook_entry_hookfn include/linux/netfilter.h:144 [inline]
nf_hook_slow+0xbd/0x200 net/netfilter/core.c:626
nf_hook include/linux/netfilter.h:259 [inline]
NF_HOOK include/linux/netfilter.h:302 [inline]
br_nf_pre_routing_ipv6+0x563/0x6b0 net/bridge/br_netfilter_ipv6.c:184
nf_hook_entry_hookfn include/linux/netfilter.h:144 [inline]
nf_hook_bridge_pre net/bridge/br_input.c:277 [inline]
br_handle_frame+0x1245/0x14d0 net/bridge/br_input.c:424
__netif_receive_skb_core+0xfab/0x3af0 net/core/dev.c:5515
__netif_receive_skb_one_core net/core/dev.c:5619 [inline]
__netif_receive_skb+0x74/0x290 net/core/dev.c:5735
process_backlog+0x391/0x6f0 net/core/dev.c:6063
__napi_poll+0xc0/0x460 net/core/dev.c:6625
napi_poll net/core/dev.c:6692 [inline]
net_rx_action+0x616/0xc40 net/core/dev.c:6828
handle_softirqs+0x280/0x820 kernel/softirq.c:578
__do_softirq kernel/softirq.c:612 [inline]
invoke_softirq kernel/softirq.c:452 [inline]
__irq_exit_rcu+0xd3/0x190 kernel/softirq.c:661
irq_exit_rcu+0x9/0x20 kernel/softirq.c:673
instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1088 [inline]
sysvec_apic_timer_interrupt+0xa4/0xc0 arch/x86/kernel/apic/apic.c:1088
</IRQ>
<TASK>
asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:687
RIP: 0010:format_decode+0x0/0x1400 lib/vsprintf.c:2531
Code: f7 e9 5f ff ff ff 44 89 e1 80 e1 07 38 c1 0f 8c 77 ff ff ff 4c 89 e7 e8 5e 47 6a f7 e9 6a ff ff ff 66 0f 1f 84 00 00 00 00 00 <55> 41 57 41 56 41 55 41 54 53 48 83 ec 48 49 89 f6 49 89 fc 65 48
RSP: 0018:ffffc90004a267b0 EFLAGS: 00000283
RAX: ffffffff8a74f6d8 RBX: ffff0a0000000500 RCX: 0000000000080000
RDX: ffffc9000e822000 RSI: ffffc90004a267f8 RDI: ffffffff8acb8a66
RBP: ffffffff8acb8a66 R08: ffffc90004a26a86 R09: 1ffff92000944d50
R10: dffffc0000000000 R11: fffff52000944d51 R12: ffffc90084a26a7f
R13: ffffc90004a26a87 R14: 0000000000000001 R15: ffffffff8acb8a66
vsnprintf+0xeb/0x1ba0 lib/vsprintf.c:2775
sprintf+0xe8/0x140 lib/vsprintf.c:3027
print_time kernel/printk/printk.c:1327 [inline]
info_print_prefix+0x16c/0x360 kernel/printk/printk.c:1353
record_print_text+0x177/0x450 kernel/printk/printk.c:1402
printk_get_next_message+0x2ab/0x980 kernel/printk/printk.c:2876
console_emit_next_record kernel/printk/printk.c:2911 [inline]
console_flush_all+0x3a8/0xd20 kernel/printk/printk.c:3000
console_unlock+0xad/0x350 kernel/printk/printk.c:3069
vprintk_emit+0x497/0x610 kernel/printk/printk.c:2341
_printk+0xde/0x130 kernel/printk/printk.c:2366
__nla_validate_parse+0x2672/0x2ea0 lib/nlattr.c:647
__nla_parse+0x40/0x50 lib/nlattr.c:732
__nlmsg_parse include/net/netlink.h:756 [inline]
genl_family_rcv_msg_attrs_parse+0x1c6/0x290 net/netlink/genetlink.c:801
genl_family_rcv_msg_doit+0xce/0x310 net/netlink/genetlink.c:949
genl_family_rcv_msg net/netlink/genetlink.c:1051 [inline]
genl_rcv_msg+0x619/0x7a0 net/netlink/genetlink.c:1066
netlink_rcv_skb+0x241/0x4d0 net/netlink/af_netlink.c:2545
genl_rcv+0x28/0x40 net/netlink/genetlink.c:1075
netlink_unicast_kernel net/netlink/af_netlink.c:1320 [inline]
netlink_unicast+0x751/0x8d0 net/netlink/af_netlink.c:1346
netlink_sendmsg+0x8d0/0xbf0 net/netlink/af_netlink.c:1894
sock_sendmsg_nosec net/socket.c:730 [inline]
__sock_sendmsg net/socket.c:745 [inline]
____sys_sendmsg+0x5ba/0x960 net/socket.c:2594
___sys_sendmsg+0x2a6/0x360 net/socket.c:2648
__sys_sendmsg net/socket.c:2677 [inline]
__do_sys_sendmsg net/socket.c:2686 [inline]
__se_sys_sendmsg+0x1c2/0x2b0 net/socket.c:2684
do_syscall_x64 arch/x86/entry/common.c:46 [inline]
do_syscall_64+0x55/0xa0 arch/x86/entry/common.c:76
entry_SYSCALL_64_after_hwframe+0x68/0xd2
RIP: 0033:0x7ff66639c799
Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 e8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007ff6672c2028 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
RAX: ffffffffffffffda RBX: 00007ff666616090 RCX: 00007ff66639c799
RDX: 0000000000000000 RSI: 0000200000000000 RDI: 000000000000000a
RBP: 00007ff666432bd9 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007ff666616128 R14: 00007ff666616090 R15: 00007fff33948638
</TASK>