bridge0: received packet on bridge_slave_1 with own address as source address (addr:aa:aa:aa:aa:aa:0c, vlan:0)
bridge0: received packet on veth1_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): P12633/1:b..l
rcu: (detected by 1, t=10502 jiffies, g=64657, q=1075 ncpus=2)
task:syz.3.1731 state:R running task stack:25640 pid:12633 tgid:12633 ppid:5641 task_flags:0x400040 flags:0x00080002
Call Trace:
context_switch kernel/sched/core.c:5388 [inline]
__schedule+0x1840/0x57a0 kernel/sched/core.c:7189
preempt_schedule_common+0x82/0xd0 kernel/sched/core.c:7370
preempt_schedule_thunk+0x16/0x30 arch/x86/entry/thunk.S:12
__local_bh_enable_ip+0xe1/0x130 kernel/softirq.c:457
spin_unlock_bh include/linux/spinlock.h:396 [inline]
nl80211_netlink_notify+0x6f4/0x840 net/wireless/nl80211.c:22563
notifier_call_chain+0x1a5/0x3d0 kernel/notifier.c:85
blocking_notifier_call_chain+0x6a/0x90 kernel/notifier.c:380
netlink_release+0x11f8/0x1aa0 net/netlink/af_netlink.c:761
__sock_release net/socket.c:722 [inline]
sock_close+0xad/0x220 net/socket.c:1515
__fput+0x418/0xa50 fs/file_table.c:510
task_work_run+0x1d9/0x270 kernel/task_work.c:233
resume_user_mode_work include/linux/resume_user_mode.h:50 [inline]
__exit_to_user_mode_loop kernel/entry/common.c:67 [inline]
exit_to_user_mode_loop+0x193/0x6b0 kernel/entry/common.c:98
__exit_to_user_mode_prepare include/linux/irq-entry-common.h:207 [inline]
syscall_exit_to_user_mode_prepare include/linux/irq-entry-common.h:230 [inline]
syscall_exit_to_user_mode include/linux/entry-common.h:318 [inline]
do_syscall_64+0x353/0x580 arch/x86/entry/syscall_64.c:100
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f914ef9ce59
RSP: 002b:00007fff96515688 EFLAGS: 00000246 ORIG_RAX: 00000000000001b4
RAX: 0000000000000000 RBX: 00007f914f217da0 RCX: 00007f914ef9ce59
RDX: 0000000000000000 RSI: 000000000000001e RDI: 0000000000000003
RBP: 00007f914f217da0 R08: 00007f914f216038 R09: 0000000000000000
R10: 00000000003ffb8c R11: 0000000000000246 R12: 000000000005c5bc
R13: 00007f914f21609c R14: 000000000005c41a R15: 00007f914f216090
rcu: rcu_preempt kthread starved for 2448 jiffies! g64657 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:27688 pid:16 tgid:16 ppid:2 task_flags:0x208040 flags:0x00080000
Call Trace:
context_switch kernel/sched/core.c:5388 [inline]
__schedule+0x1840/0x57a0 kernel/sched/core.c:7189
__schedule_loop kernel/sched/core.c:7268 [inline]
schedule+0x164/0x360 kernel/sched/core.c:7283
schedule_timeout+0x152/0x2c0 kernel/time/sleep_timeout.c:99
rcu_gp_fqs_loop+0x30c/0x11f0 kernel/rcu/tree.c:2095
rcu_gp_kthread+0x9e/0x2b0 kernel/rcu/tree.c:2297
kthread+0x389/0x470 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: 5770 Comm: kworker/0:6 Not tainted syzkaller #0 PREEMPT(full)
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/09/2026
Workqueue: mld mld_ifc_work
RIP: 0010:lockdep_enabled kernel/locking/lockdep.c:124 [inline]
RIP: 0010:lock_acquire+0xa8/0x350 kernel/locking/lockdep.c:5844
Code: ef e8 8c 10 8f 00 83 3d f5 79 8e 0e 00 0f 84 ce 00 00 00 65 8b 05 b8 72 95 11 85 c0 0f 85 bf 00 00 00 65 48 8b 05 00 2d 95 11 <83> b8 8c 0b 00 00 00 0f 85 aa 00 00 00 4c 89 74 24 10 4d 89 fe 9c
RSP: 0018:ffffc90000006d08 EFLAGS: 00000046
RAX: ffff88807e0ddd00 RBX: 0000000000000000 RCX: 0000000000010105
RDX: 0000000000000000 RSI: ffffffff8ba5065e RDI: 1ffff1100f556258
RBP: ffffffff89b2d7e2 R08: 0000000000000001 R09: 0000000000000000
R10: dffffc0000000000 R11: ffffffff89b2d720 R12: 0000000000000000
R13: ffff88807aab12c0 R14: 0000000000000000 R15: 0000000000000001
FS: 0000000000000000(0000) GS:ffff8881252b9000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f9ea69d4ff8 CR3: 0000000072e82000 CR4: 00000000003526f0
Call Trace:
__raw_spin_lock include/linux/spinlock_api_smp.h:158 [inline]
_raw_spin_lock+0x2e/0x40 kernel/locking/spinlock.c:158
spin_lock include/linux/spinlock.h:342 [inline]
advance_sched+0xc2/0xc80 net/sched/sch_taprio.c:930
__run_hrtimer kernel/time/hrtimer.c:1930 [inline]
__hrtimer_run_queues+0x3bc/0xa10 kernel/time/hrtimer.c:1994
hrtimer_interrupt+0x448/0x910 kernel/time/hrtimer.c:2113
local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1050 [inline]
__sysvec_apic_timer_interrupt+0x102/0x430 arch/x86/kernel/apic/apic.c:1067
instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1061 [inline]
sysvec_apic_timer_interrupt+0x52/0xc0 arch/x86/kernel/apic/apic.c:1061
asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:697
RIP: 0010:console_trylock_spinning kernel/printk/printk.c:2039 [inline]
RIP: 0010:vprintk_emit+0x45d/0x560 kernel/printk/printk.c:2478
Code: 0f 84 44 ff ff ff e8 72 17 21 00 fb eb 44 e8 6a 17 21 00 e8 45 2c fe 09 4d 85 f6 74 94 e8 5b 17 21 00 fb 48 c7 c7 00 ed 94 8e <31> f6 ba 01 00 00 00 31 c9 41 b8 01 00 00 00 45 31 c9 53 e8 6b 19
RSP: 0018:ffffc90000007160 EFLAGS: 00000246
RAX: ffffffff81a428d5 RBX: ffffffff81a4274f RCX: ffff88807e0ddd00
RDX: 0000000000000100 RSI: 0000000000000000 RDI: ffffffff8e94ed00
RBP: ffffc90000007210 R08: ffffffff902f89f7 R09: 1ffffffff205f13e
R10: dffffc0000000000 R11: fffffbfff205f13f R12: 0000000000000000
R13: 000000000000006f R14: 0000000000000200 R15: 1ffff92000000e30
_printk+0xdd/0x130 kernel/printk/printk.c:2504
br_fdb_update+0x657/0x6c0 net/bridge/br_fdb.c:986
br_handle_frame_finish+0x579/0x1930 net/bridge/br_input.c:144
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:318 [inline]
br_nf_pre_routing_ipv6+0x382/0x6f0 net/bridge/br_netfilter_ipv6.c:183
nf_hook_entry_hookfn include/linux/netfilter.h:158 [inline]
nf_hook_bridge_pre net/bridge/br_input.c:291 [inline]
br_handle_frame+0x1272/0x1510 net/bridge/br_input.c:442
__netif_receive_skb_core+0x989/0x30b0 net/core/dev.c:6089
__netif_receive_skb_one_core net/core/dev.c:6200 [inline]
__netif_receive_skb net/core/dev.c:6315 [inline]
process_backlog+0x706/0x1860 net/core/dev.c:6666
__napi_poll+0xaa/0x330 net/core/dev.c:7733
napi_poll net/core/dev.c:7796 [inline]
net_rx_action+0x61d/0xf50 net/core/dev.c:7953
handle_softirqs+0x225/0x840 kernel/softirq.c:622
__do_softirq kernel/softirq.c:656 [inline]
invoke_softirq kernel/softirq.c:496 [inline]
__irq_exit_rcu+0xca/0x220 kernel/softirq.c:735
irq_exit_rcu+0x9/0x30 kernel/softirq.c:752
instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1061 [inline]
sysvec_apic_timer_interrupt+0xa6/0xc0 arch/x86/kernel/apic/apic.c:1061
asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:697
RIP: 0010:arch_atomic_read arch/x86/include/asm/atomic.h:23 [inline]
RIP: 0010:raw_atomic_read include/linux/atomic/atomic-arch-fallback.h:457 [inline]
RIP: 0010:rcu_is_watching_curr_cpu include/linux/context_tracking.h:128 [inline]
RIP: 0010:rcu_is_watching+0x55/0xb0 kernel/rcu/tree.c:752
Code: f7 25 8e 4c 89 f0 48 c1 e8 03 42 80 3c 38 00 74 08 4c 89 f7 e8 8c 19 86 00 48 c7 c3 d8 a9 37 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 b9 0b 8c 11 74 11 83 e0
RSP: 0018:ffffc90004d6f360 EFLAGS: 00000a02
RAX: 1ffff110170c673b RBX: ffff8880b86339d8 RCX: 0000000000000002
RDX: 0000000000000000 RSI: ffffffff8c289980 RDI: ffffffff8c289940
RBP: ffffc90004d6f588 R08: ffffffff902f89f7 R09: 1ffffffff205f13e
R10: dffffc0000000000 R11: fffffbfff205f13f R12: 0000000000000001
R13: dffffc0000000000 R14: ffffffff8e25f790 R15: dffffc0000000000
trace_sched_entry_tp include/trace/events/sched.h:882 [inline]
__schedule+0xea/0x57a0 kernel/sched/core.c:7033
preempt_schedule_irq+0x4d/0xa0 kernel/sched/core.c:7513
irqentry_exit_to_kernel_mode include/linux/irq-entry-common.h:539 [inline]
irqentry_exit+0x14f/0x8e0 kernel/entry/common.c:164
asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:697
RIP: 0010:should_resched arch/x86/include/asm/preempt.h:104 [inline]
RIP: 0010:__local_bh_enable_ip+0xd8/0x130 kernel/softirq.c:457
Code: 8b e8 9c f0 1a 0a 65 66 8b 05 cc ed ae 11 66 85 c0 75 32 bf 01 00 00 00 e8 75 f3 0b 00 e8 80 ec 45 00 fb 65 8b 05 a8 ed ae 11 <85> c0 75 05 e8 6f e8 ab ff 5b 41 5e e9 07 ce 1d 0a cc 90 0f 0b 90
RSP: 0018:ffffc90004d6f6b0 EFLAGS: 00000206
RAX: 0000000080000000 RBX: 0000000000000201 RCX: 0000000000000046
RDX: 0000000000000006 RSI: ffffffff8dfa1aa6 RDI: ffffffff8c2899a0
RBP: 0000000000000000 R08: ffffffff902f89f7 R09: 1ffffffff205f13e
R10: dffffc0000000000 R11: fffffbfff205f13f R12: 000000000000dd86
R13: dffffc0000000000 R14: ffffffff897cdf41 R15: ffff88802c48ab40
neigh_hh_init net/core/neighbour.c:1594 [inline]
neigh_resolve_output+0x2a1/0x720 net/core/neighbour.c:1609
NF_HOOK_COND include/linux/netfilter.h:307 [inline]
ip6_output+0x337/0x540 net/ipv6/ip6_output.c:246
dst_output include/net/dst.h:471 [inline]
NF_HOOK+0x177/0x4f0 include/linux/netfilter.h:318
mld_sendpack+0x890/0xe10 net/ipv6/mcast.c:1855
mld_send_cr net/ipv6/mcast.c:2154 [inline]
mld_ifc_work+0x839/0xe70 net/ipv6/mcast.c:2693
process_one_work kernel/workqueue.c:3314 [inline]
process_scheduled_works+0xa8e/0x14e0 kernel/workqueue.c:3397
worker_thread+0xa47/0xfb0 kernel/workqueue.c:3478
kthread+0x389/0x470 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
bridge0: received packet on bridge_slave_1 with own address as source address (addr:aa:aa:aa:aa:aa:0c, vlan:0)
bridge0: received packet on bridge_slave_1 with own address as source address (addr:aa:aa:aa:aa:aa:0c, vlan:0)
bridge0: received packet on bridge_slave_1 with own address as source address (addr:aa:aa:aa:aa:aa:0c, vlan:0)
bridge0: received packet on veth1_to_bridge with own address as source address (addr:aa:aa:aa:aa:aa:0c, vlan:0)
bridge0: received packet on veth1_to_bridge with own address as source address (addr:aa:aa:aa:aa:aa:0c, vlan:0)
bridge0: received packet on veth1_to_bridge with own address as source address (addr:aa:aa:aa:aa:aa:0c, vlan:0)
bridge0: received packet on bridge_slave_1 with own address as source address (addr:aa:aa:aa:aa:aa:0c, vlan:0)
bridge0: received packet on bridge_slave_1 with own address as source address (addr:aa:aa:aa:aa:aa:0c, vlan:0)
net_ratelimit: 12940 callbacks suppressed
bridge0: received packet on bridge_slave_1 with own address as source address (addr:aa:aa:aa:aa:aa:0c, vlan:0)
bridge0: received packet on veth1_to_bridge with own address as source address (addr:aa:aa:aa:aa:aa:0c, vlan:0)
bridge0: received packet on veth1_to_bridge with own address as source address (addr:aa:aa:aa:aa:aa:0c, vlan:0)
bridge0: received packet on veth1_to_bridge with own address as source address (addr:aa:aa:aa:aa:aa:0c, vlan:0)
bridge0: received packet on bridge_slave_1 with own address as source address (addr:aa:aa:aa:aa:aa:0c, vlan:0)
bridge0: received packet on bridge_slave_1 with own address as source address (addr:aa:aa:aa:aa:aa:0c, vlan:0)
bridge0: received packet on bridge_slave_1 with own address as source address (addr:aa:aa:aa:aa:aa:0c, vlan:0)
bridge0: received packet on veth1_to_bridge with own address as source address (addr:aa:aa:aa:aa:aa:0c, vlan:0)
bridge0: received packet on veth1_to_bridge with own address as source address (addr:aa:aa:aa:aa:aa:0c, vlan:0)
bridge0: received packet on veth1_to_bridge with own address as source address (addr:aa:aa:aa:aa:aa:0c, vlan:0)