bridge0: received packet on veth0_to_bridge with own address as source address (addr:26:75:13:10:72:0c, vlan:0) rcu: INFO: rcu_preempt detected stalls on CPUs/tasks: rcu: (detected by 1, t=10502 jiffies, g=11557, q=632 ncpus=2) rcu: All QSes seen, last rcu_preempt kthread activity 10502 (4294979632-4294969130), jiffies_till_next_fqs=1, root ->qsmask 0x0 rcu: rcu_preempt kthread starved for 10502 jiffies! g11557 f0x2 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:27600 pid:17 tgid:17 ppid:2 flags:0x00004000 Call Trace: context_switch kernel/sched/core.c:5369 [inline] __schedule+0xe58/0x5ad0 kernel/sched/core.c:6756 __schedule_loop kernel/sched/core.c:6833 [inline] schedule+0xe7/0x350 kernel/sched/core.c:6848 schedule_timeout+0x124/0x280 kernel/time/sleep_timeout.c:99 rcu_gp_fqs_loop+0x1eb/0xb00 kernel/rcu/tree.c:2045 rcu_gp_kthread+0x271/0x380 kernel/rcu/tree.c:2247 kthread+0x2c1/0x3a0 kernel/kthread.c:389 ret_from_fork+0x45/0x80 arch/x86/kernel/process.c:147 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244 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: 16 Comm: ksoftirqd/0 Not tainted 6.13.0-rc4-syzkaller-00078-g059dd502b263 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024 RIP: 0010:__lock_is_held kernel/locking/lockdep.c:5587 [inline] RIP: 0010:lock_is_held_type+0x87/0x150 kernel/locking/lockdep.c:5921 Code: 6c 8b 45 31 ff e8 09 17 00 00 4d 8d ac 24 e0 0a 00 00 65 ff 05 c2 d2 d8 74 41 8b 84 24 d8 0a 00 00 85 c0 7f 17 e9 92 00 00 00 <41> 83 c7 01 45 3b bc 24 d8 0a 00 00 0f 8d 80 00 00 00 49 63 c7 48 RSP: 0018:ffffc90000007ba8 EFLAGS: 00000046 RAX: 0000000000000000 RBX: ffff88801d6d8b08 RCX: 0000000000000001 RDX: 0000000000000000 RSI: ffff8880b863ebd8 RDI: ffff88801d6d8b08 RBP: ffff8880b863ebd8 R08: 0000000000000000 R09: ffffed10170c5940 R10: ffff8880b862ca03 R11: 0000000000000004 R12: ffff88801d6d8000 R13: ffff88801d6d8ae0 R14: 00000000ffffffff R15: 0000000000000001 FS: 0000000000000000(0000) GS:ffff8880b8600000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007ffe3f0dec38 CR3: 0000000060a8e000 CR4: 00000000003526f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: lock_is_held include/linux/lockdep.h:249 [inline] lockdep_assert_rq_held+0x77/0xd0 kernel/sched/sched.h:1514 rq_clock kernel/sched/sched.h:1662 [inline] replenish_dl_new_period kernel/sched/deadline.c:777 [inline] update_curr_dl_se+0x410/0x610 kernel/sched/deadline.c:1511 update_curr+0x59e/0x800 kernel/sched/fair.c:1248 entity_tick kernel/sched/fair.c:5697 [inline] task_tick_fair+0xb8/0x8e0 kernel/sched/fair.c:13097 sched_tick+0x1dd/0x4f0 kernel/sched/core.c:5652 update_process_times+0x19c/0x2d0 kernel/time/timer.c:2524 tick_sched_handle kernel/time/tick-sched.c:276 [inline] tick_nohz_handler+0x376/0x530 kernel/time/tick-sched.c:297 __run_hrtimer kernel/time/hrtimer.c:1739 [inline] __hrtimer_run_queues+0x5fb/0xae0 kernel/time/hrtimer.c:1803 hrtimer_interrupt+0x392/0x8e0 kernel/time/hrtimer.c:1865 local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1038 [inline] __sysvec_apic_timer_interrupt+0x10f/0x400 arch/x86/kernel/apic/apic.c:1055 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1049 [inline] sysvec_apic_timer_interrupt+0x9f/0xc0 arch/x86/kernel/apic/apic.c:1049 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:702 RIP: 0010:do_raw_read_unlock+0x4d/0xe0 kernel/locking/spinlock_debug.c:182 Code: c0 74 08 3c 03 0f 8e 98 00 00 00 81 7b 08 ed 1e af de 75 1d be 04 00 00 00 48 89 df e8 0c 8d 85 00 b8 00 fe ff ff f0 0f c1 03 <5b> 5d c3 cc cc cc cc e8 d7 b0 25 03 85 c0 74 da 65 48 8b 2d 8b 9c RSP: 0018:ffffc90000156fc0 EFLAGS: 00000247 RAX: 0000000000000200 RBX: ffff888029876e40 RCX: ffffffff81773c54 RDX: ffffed100530edc9 RSI: 0000000000000004 RDI: ffff888029876e40 RBP: 0000000000000001 R08: 0000000000000001 R09: ffffed100530edc8 R10: ffff888029876e43 R11: 0000000000000002 R12: ffffc90002ebe030 R13: ffff888029876e40 R14: dffffc0000000000 R15: 0000000000000000 __raw_read_unlock_bh include/linux/rwlock_api_smp.h:256 [inline] _raw_read_unlock_bh+0x1e/0x30 kernel/locking/spinlock.c:284 ebt_do_table+0x1bd1/0x21b0 net/bridge/netfilter/ebtables.c:312 nf_hook_entry_hookfn include/linux/netfilter.h:154 [inline] nf_hook_slow+0xbb/0x200 net/netfilter/core.c:626 nf_hook.constprop.0+0x3e8/0x6b0 include/linux/netfilter.h:274 NF_HOOK include/linux/netfilter.h:312 [inline] br_pass_frame_up+0x307/0x490 net/bridge/br_input.c:70 br_handle_frame_finish+0xdcf/0x1c80 net/bridge/br_input.c:221 br_nf_hook_thresh+0x303/0x410 net/bridge/br_netfilter_hooks.c:1198 br_nf_pre_routing_finish_ipv6+0x76a/0xfb0 net/bridge/br_netfilter_ipv6.c:154 NF_HOOK include/linux/netfilter.h:314 [inline] br_nf_pre_routing_ipv6+0x3ce/0x8c0 net/bridge/br_netfilter_ipv6.c:184 br_nf_pre_routing+0x860/0x15b0 net/bridge/br_netfilter_hooks.c:536 nf_hook_entry_hookfn include/linux/netfilter.h:154 [inline] nf_hook_bridge_pre net/bridge/br_input.c:277 [inline] br_handle_frame+0x9eb/0x1490 net/bridge/br_input.c:424 __netif_receive_skb_core.constprop.0+0xa76/0x4470 net/core/dev.c:5566 __netif_receive_skb_one_core+0xb1/0x1e0 net/core/dev.c:5670 __netif_receive_skb+0x1d/0x160 net/core/dev.c:5785 process_backlog+0x443/0x15f0 net/core/dev.c:6117 __napi_poll.constprop.0+0xb7/0x550 net/core/dev.c:6883 napi_poll net/core/dev.c:6952 [inline] net_rx_action+0xa94/0x1010 net/core/dev.c:7074 handle_softirqs+0x213/0x8f0 kernel/softirq.c:561 run_ksoftirqd kernel/softirq.c:950 [inline] run_ksoftirqd+0x3a/0x60 kernel/softirq.c:942 smpboot_thread_fn+0x661/0xa30 kernel/smpboot.c:164 kthread+0x2c1/0x3a0 kernel/kthread.c:389 ret_from_fork+0x45/0x80 arch/x86/kernel/process.c:147 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244 net_ratelimit: 40177 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 veth0_to_bridge with own address as source address (addr:26:75:13:10:72:0c, 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:26:75:13:10:72:0c, 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:26:75:13:10:72:0c, 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 veth0_to_bridge with own address as source address (addr:26:75:13:10:72:0c, 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 veth0_to_bridge with own address as source address (addr:26:75:13:10:72:0c, vlan:0) net_ratelimit: 45782 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 veth0_to_bridge with own address as source address (addr:26:75:13:10:72:0c, 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 veth0_to_bridge with own address as source address (addr:26:75:13:10:72:0c, 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:26:75:13:10:72:0c, 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:26:75:13:10:72:0c, 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:26:75:13:10:72:0c, vlan:0)