bridge0: received packet on veth1_to_bridge with own address as source address (addr:9e:02:2c:95:5a:71, vlan:0) bridge0: received packet on veth1_to_bridge with own address as source address (addr:9e:02:2c:95:5a:71, vlan:0) rcu: INFO: rcu_preempt detected stalls on CPUs/tasks: rcu: (detected by 1, t=10502 jiffies, g=130273, q=934 ncpus=2) rcu: All QSes seen, last rcu_preempt kthread activity 10487 (4295013621-4295003134), jiffies_till_next_fqs=1, root ->qsmask 0x0 rcu: rcu_preempt kthread starved for 10488 jiffies! g130273 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:27496 pid:16 tgid:16 ppid:2 task_flags:0x208040 flags:0x00080000 Call Trace: context_switch kernel/sched/core.c:5510 [inline] __schedule+0x17d9/0x56c0 kernel/sched/core.c:7234 __schedule_loop kernel/sched/core.c:7311 [inline] schedule+0x164/0x2b0 kernel/sched/core.c:7326 schedule_timeout+0x152/0x2c0 kernel/time/sleep_timeout.c:99 rcu_gp_fqs_loop+0x30c/0x11f0 kernel/rcu/tree.c:2123 rcu_gp_kthread+0x9e/0x2b0 kernel/rcu/tree.c:2325 kthread+0x388/0x470 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: CPU: 1 UID: 0 PID: 19253 Comm: ipvs-e:16:0 Not tainted syzkaller #0 PREEMPT(full) Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/09/2026 RIP: 0010:lock_is_held_type+0x106/0x150 kernel/locking/lockdep.c:5945 Code: 1a 00 00 b8 ff ff ff ff 65 0f c1 05 b4 2c 8c 07 83 f8 01 75 25 9c 58 a9 00 02 00 00 75 39 41 f7 c4 00 02 00 00 74 01 fb 89 d8 <5b> 41 5c 41 5d 41 5e 41 5f 5d c3 cc cc cc cc cc 90 0f 0b 90 48 c7 RSP: 0018:ffffc90000a08080 EFLAGS: 00000206 RAX: 0000000000000001 RBX: 0000000000000001 RCX: 0000000080000100 RDX: ffff8880314e0000 RSI: ffffffff8e25a5be RDI: ffffffff8c2a9f80 RBP: 00000000ffffffff R08: ffffc90000a083e0 R09: ffffc90000a083f0 R10: ffffc90000a08240 R11: fffff5200014104a R12: 0000000000000246 R13: ffff8880314e0000 R14: ffffffff8e959c20 R15: 0000000000000000 FS: 0000000000000000(0000) GS:ffff888125326000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000055a3a3ed9e10 CR3: 000000007e814000 CR4: 00000000003526f0 Call Trace: __in6_dev_get include/net/addrconf.h:348 [inline] ip6_ignore_linkdown+0x66/0x140 include/net/addrconf.h:452 find_match+0x9c/0xb40 net/ipv6/route.c:783 __find_rr_leaf+0x243/0x740 net/ipv6/route.c:872 find_rr_leaf net/ipv6/route.c:893 [inline] rt6_select net/ipv6/route.c:937 [inline] fib6_table_lookup+0x3c6/0xae0 net/ipv6/route.c:2255 ip6_pol_route+0x229/0x14d0 net/ipv6/route.c:2292 pol_lookup_func include/net/ip6_fib.h:669 [inline] __fib6_rule_action net/ipv6/fib6_rules.c:240 [inline] fib6_rule_action+0x9d7/0xc00 net/ipv6/fib6_rules.c:278 fib_rules_lookup+0x770/0xeb0 net/core/fib_rules.c:340 fib6_rule_lookup+0x1a0/0x730 net/ipv6/fib6_rules.c:115 ip6_route_input_lookup net/ipv6/route.c:2363 [inline] ip6_route_input+0x78d/0xb20 net/ipv6/route.c:2666 ip6_rcv_finish+0x141/0x280 net/ipv6/ip6_input.c:117 NF_HOOK+0x336/0x3c0 include/linux/netfilter.h:318 __netif_receive_skb_one_core net/core/dev.c:6206 [inline] __netif_receive_skb net/core/dev.c:6319 [inline] process_backlog+0x774/0x1860 net/core/dev.c:6670 __napi_poll+0xaa/0x330 net/core/dev.c:7729 napi_poll net/core/dev.c:7792 [inline] net_rx_action+0x61d/0xf50 net/core/dev.c:7949 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: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:__timer_delete_sync+0xff/0x520 kernel/time/timer.c:1611 Code: 14 00 48 85 db 75 16 e8 bf 1a 14 00 eb 15 e8 b8 1a 14 00 e8 53 5e 01 0a 48 85 db 74 ea e8 a9 1a 14 00 fb 65 8b 1d 51 49 8d 11 <89> de 81 e6 00 00 0f 00 31 ff e8 d2 1e 14 00 49 bf 00 00 00 00 00 RSP: 0018:ffffc9000382fa38 EFLAGS: 00000293 RAX: ffffffff81b256d7 RBX: 0000000080000000 RCX: ffff8880314e0000 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000 RBP: ffffc9000382fb70 R08: ffffffff9032d2f7 R09: 1ffffffff2065a5e R10: dffffc0000000000 R11: fffffbfff2065a5f R12: ffffc9000382faa0 R13: ffffc9000382faa0 R14: 0000000000000000 R15: ffffffff81b25668 schedule_timeout+0x15a/0x2c0 kernel/time/sleep_timeout.c:100 ip_vs_estimation_kthread+0x29a6/0x38f0 net/netfilter/ipvs/ip_vs_est.c:213 kthread+0x388/0x470 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 net_ratelimit: 4910 callbacks suppressed bridge0: received packet on veth1_to_bridge with own address as source address (addr:9e:02:2c:95:5a:71, vlan:0) bridge0: received packet on veth1_to_bridge with own address as source address (addr:9e:02:2c:95:5a:71, vlan:0) bridge0: received packet on veth1_to_bridge with own address as source address (addr:9e:02:2c:95:5a:71, vlan:0) bridge0: received packet on veth1_to_bridge with own address as source address (addr:9e:02:2c:95:5a:71, vlan:0) bridge0: received packet on veth1_to_bridge with own address as source address (addr:9e:02:2c:95:5a:71, vlan:0) bridge0: received packet on veth1_to_bridge with own address as source address (addr:9e:02:2c:95:5a:71, vlan:0) bridge0: received packet on veth1_to_bridge with own address as source address (addr:9e:02:2c:95:5a:71, vlan:0) bridge0: received packet on veth1_to_bridge with own address as source address (addr:9e:02:2c:95:5a:71, vlan:0) bridge0: received packet on veth1_to_bridge with own address as source address (addr:9e:02:2c:95:5a:71, vlan:0) bridge0: received packet on veth1_to_bridge with own address as source address (addr:9e:02:2c:95:5a:71, vlan:0) net_ratelimit: 10601 callbacks suppressed bridge0: received packet on veth1_to_bridge with own address as source address (addr:9e:02:2c:95:5a:71, vlan:0) bridge0: received packet on veth1_to_bridge with own address as source address (addr:9e:02:2c:95:5a:71, vlan:0) bridge0: received packet on veth1_to_bridge with own address as source address (addr:9e:02:2c:95:5a:71, vlan:0) bridge0: received packet on veth1_to_bridge with own address as source address (addr:9e:02:2c:95:5a:71, vlan:0) bridge0: received packet on veth1_to_bridge with own address as source address (addr:9e:02:2c:95:5a:71, vlan:0) bridge0: received packet on veth1_to_bridge with own address as source address (addr:9e:02:2c:95:5a:71, vlan:0) bridge0: received packet on veth1_to_bridge with own address as source address (addr:9e:02:2c:95:5a:71, vlan:0) bridge0: received packet on veth1_to_bridge with own address as source address (addr:9e:02:2c:95:5a:71, vlan:0) bridge0: received packet on veth1_to_bridge with own address as source address (addr:9e:02:2c:95:5a:71, vlan:0) bridge0: received packet on veth1_to_bridge with own address as source address (addr:9e:02:2c:95:5a:71, vlan:0)