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: (detected by 1, t=10502 jiffies, g=15537, q=769 ncpus=2)
rcu: All QSes seen, last rcu_preempt kthread activity 10240 (4294961952-4294951712), jiffies_till_next_fqs=1, root ->qsmask 0x0
rcu: rcu_preempt kthread starved for 10240 jiffies! g15537 f0x2 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:27656 pid:17 ppid:2 flags:0x00004000
Call Trace:
context_switch kernel/sched/core.c:5381 [inline]
__schedule+0x1553/0x45a0 kernel/sched/core.c:6700
schedule+0xbd/0x170 kernel/sched/core.c:6774
schedule_timeout+0x188/0x2d0 kernel/time/timer.c:2168
rcu_gp_fqs_loop+0x313/0x1590 kernel/rcu/tree.c:1667
rcu_gp_kthread+0x9d/0x3b0 kernel/rcu/tree.c:1866
kthread+0x2fa/0x390 kernel/kthread.c:388
ret_from_fork+0x48/0x80 arch/x86/kernel/process.c:152
ret_from_fork_asm+0x11/0x20 arch/x86/entry/entry_64.S:293
rcu: Stack dump where RCU GP kthread last ran:
CPU: 1 PID: 6737 Comm: syz.0.350 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025
RIP: 0010:lock_release+0x594/0x8c0 kernel/locking/lockdep.c:5778
Code: 00 00 00 f7 84 24 80 00 00 00 00 02 00 00 43 c6 44 2f 04 f8 75 70 f7 44 24 50 00 02 00 00 74 01 fb 48 c7 44 24 60 0e 36 e0 45 <4b> c7 04 2f 00 00 00 00 43 c7 44 2f 08 00 00 00 00 65 48 8b 04 25
RSP: 0018:ffffc900001f0760 EFLAGS: 00000206
RAX: 0000000000000001 RBX: 58cce5e7c8d5ebdc RCX: 03e4f34cbdd27b00
RDX: 0000000000000002 RSI: ffffffff8acada80 RDI: ffffffff8b1c80e0
RBP: ffffc900001f0870 R08: ffffffff8e8ad9ef R09: 1ffffffff1d15b3d
R10: dffffc0000000000 R11: fffffbfff1d15b3e R12: ffff888024aba930
R13: dffffc0000000000 R14: ffff888024aba8d0 R15: 1ffff9200003e0f8
FS: 00007f55a38f26c0(0000) GS:ffff8880b8f00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fe7f31de2f8 CR3: 000000002d10c000 CR4: 00000000003506e0
DR0: 0000200000000300 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 00000000000f0602
Call Trace:
rcu_lock_release include/linux/rcupdate.h:344 [inline]
rcu_read_unlock include/linux/rcupdate.h:819 [inline]
ipv6_chk_mcast_addr+0x77f/0x850 net/ipv6/mcast.c:1045
ip6_mc_input+0x469/0xcb0 net/ipv6/ip6_input.c:523
NF_HOOK+0x32d/0x3b0 include/linux/netfilter.h:304
__netif_receive_skb_one_core net/core/dev.c:5638 [inline]
__netif_receive_skb+0xcc/0x290 net/core/dev.c:5752
process_backlog+0x396/0x700 net/core/dev.c:6080
__napi_poll+0xc0/0x460 net/core/dev.c:6642
napi_poll net/core/dev.c:6709 [inline]
net_rx_action+0x616/0xc50 net/core/dev.c:6846
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
asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:687
RIP: 0010:rcu_preempt_deferred_qs_irqrestore+0x892/0xce0 kernel/rcu/tree_plugin.h:569
Code: 8b 05 ea d2 90 7e 85 c0 75 0f 65 8b 05 af cf 90 7e 85 c0 0f 85 fa 01 00 00 4c 89 ef 48 8b 74 24 20 e8 32 fd 1b 09 8b 44 24 2c <44> 08 e0 a8 01 49 bc 00 00 00 00 00 fc ff df 75 18 4c 89 ef e8 95
RSP: 0018:ffffc9000e707840 EFLAGS: 00000246
RAX: 00000000f1a26e01 RBX: ffffffff8d1372b8 RCX: 0000000000000000
RDX: dffffc0000000000 RSI: ffffffff8acac900 RDI: 00000000ffffffff
RBP: ffffc9000e707990 R08: ffffffff8e8ad9ef R09: 1ffffffff1d15b3d
R10: dffffc0000000000 R11: fffffbfff1d15b3e R12: dffffc0000000000
R13: ffffffff8d137240 R14: ffffffff8d137310 R15: ffff888024aba248
rcu_read_unlock_special+0x3ac/0x470 kernel/rcu/tree_plugin.h:697
__rcu_read_unlock+0x7c/0xd0 kernel/rcu/tree_plugin.h:426
rcu_read_unlock include/linux/rcupdate.h:818 [inline]
sched_mm_cid_remote_clear_old kernel/sched/core.c:11940 [inline]
task_mm_cid_work+0x217/0x770 kernel/sched/core.c:11997
task_work_run+0x1d4/0x260 kernel/task_work.c:245
get_signal+0x1235/0x13f0 kernel/signal.c:2678
arch_do_signal_or_restart+0xc2/0x800 arch/x86/kernel/signal.c:310
exit_to_user_mode_loop+0x70/0x110 kernel/entry/common.c:174
exit_to_user_mode_prepare+0xee/0x180 kernel/entry/common.c:210
__syscall_exit_to_user_mode_work kernel/entry/common.c:291 [inline]
syscall_exit_to_user_mode+0x1a/0x50 kernel/entry/common.c:302
do_syscall_64+0x61/0xa0 arch/x86/entry/common.c:82
entry_SYSCALL_64_after_hwframe+0x68/0xd2
RIP: 0033:0x7f55a299acb9
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:00007f55a38f20e8 EFLAGS: 00000246 ORIG_RAX: 00000000000000ca
RAX: fffffffffffffe00 RBX: 00007f55a2c15fa8 RCX: 00007f55a299acb9
RDX: 0000000000000000 RSI: 0000000000000080 RDI: 00007f55a2c15fa8
RBP: 00007f55a2c15fa0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f55a2c16038 R14: 00007fffc50d9a40 R15: 00007fffc50d9b28
net_ratelimit: 714 callbacks suppressed
bridge0: received packet on veth0_to_bridge with own address as source address (addr:ae:a5:a1:72:4f:a4, vlan:0)
bridge0: received packet on veth0_to_bridge with own address as source address (addr:ae:a5:a1:72:4f:a4, vlan:0)
bridge0: received packet on veth0_to_bridge with own address as source address (addr:06:ab:7c:54:9b:02, vlan:0)
bridge0: received packet on veth0_to_bridge with own address as source address (addr:06:ab:7c:54:9b:02, 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 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: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)