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: Tasks blocked on level-0 rcu_node (CPUs 0-1): P12519/1:b..l rcu: (detected by 1, t=10503 jiffies, g=55857, q=1047 ncpus=2) task:syz-executor state:R running task stack:21280 pid:12519 tgid:12519 ppid:12501 flags:0x00004002 Call Trace: context_switch kernel/sched/core.c:5369 [inline] __schedule+0x1850/0x4c30 kernel/sched/core.c:6756 preempt_schedule_irq+0xfb/0x1c0 kernel/sched/core.c:7078 irqentry_exit+0x5e/0x90 kernel/entry/common.c:354 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:702 RIP: 0010:task_on_another_cpu arch/x86/include/asm/unwind.h:148 [inline] RIP: 0010:__unwind_start+0x73/0x740 arch/x86/kernel/unwind_orc.c:699 Code: 74 12 4c 89 ef e8 4d 04 ba 00 48 ba 00 00 00 00 00 fc ff df 49 89 5d 00 80 3d 61 2f e3 0c 01 75 2f 65 48 8b 04 25 00 d6 03 00 <48> 39 d8 74 68 48 8d 6b 34 48 89 e8 48 c1 e8 03 0f b6 04 10 84 c0 RSP: 0018:ffffc900043c6260 EFLAGS: 00000246 RAX: ffff88801f701e00 RBX: ffff88801f701e00 RCX: 0000000000000000 RDX: dffffc0000000000 RSI: 0000000000000000 RDI: ffffc900043c6320 RBP: dffffc0000000000 R08: ffffc900043c631f R09: 0000000000000000 R10: ffffc900043c62c0 R11: fffff52000878c64 R12: 0000000000000000 R13: ffffc900043c62e8 R14: ffffc900043c62c0 R15: 1ffff92000878c5d unwind_start arch/x86/include/asm/unwind.h:64 [inline] arch_stack_walk+0xe5/0x150 arch/x86/kernel/stacktrace.c:24 stack_trace_save+0x118/0x1d0 kernel/stacktrace.c:122 save_stack+0xfb/0x1f0 mm/page_owner.c:156 __reset_page_owner+0x76/0x430 mm/page_owner.c:297 reset_page_owner include/linux/page_owner.h:25 [inline] free_pages_prepare mm/page_alloc.c:1127 [inline] free_unref_page+0xd3f/0x1010 mm/page_alloc.c:2657 discard_slab mm/slub.c:2688 [inline] __put_partials+0x160/0x1c0 mm/slub.c:3157 put_cpu_partial+0x17c/0x250 mm/slub.c:3232 __slab_free+0x290/0x380 mm/slub.c:4483 qlink_free mm/kasan/quarantine.c:163 [inline] qlist_free_all+0x9a/0x140 mm/kasan/quarantine.c:179 kasan_quarantine_reduce+0x14f/0x170 mm/kasan/quarantine.c:286 __kasan_slab_alloc+0x23/0x80 mm/kasan/common.c:329 kasan_slab_alloc include/linux/kasan.h:250 [inline] slab_post_alloc_hook mm/slub.c:4119 [inline] slab_alloc_node mm/slub.c:4168 [inline] __do_kmalloc_node mm/slub.c:4297 [inline] __kmalloc_node_noprof+0x23c/0x4d0 mm/slub.c:4304 kmalloc_node_noprof include/linux/slab.h:928 [inline] qdisc_alloc+0x9a/0xa80 net/sched/sch_generic.c:952 qdisc_create_dflt+0x62/0x4b0 net/sched/sch_generic.c:1014 attach_one_default_qdisc net/sched/sch_generic.c:1180 [inline] netdev_for_each_tx_queue include/linux/netdevice.h:2566 [inline] attach_default_qdiscs net/sched/sch_generic.c:1198 [inline] dev_activate+0x3c0/0x1240 net/sched/sch_generic.c:1257 __dev_open+0x352/0x450 net/core/dev.c:1485 dev_open+0xae/0x1b0 net/core/dev.c:1512 bond_enslave+0x10ac/0x3ac0 drivers/net/bonding/bond_main.c:2138 do_set_master net/core/rtnetlink.c:2917 [inline] do_setlink+0xe40/0x4210 net/core/rtnetlink.c:3116 rtnl_changelink net/core/rtnetlink.c:3723 [inline] __rtnl_newlink net/core/rtnetlink.c:3875 [inline] rtnl_newlink+0x1bb6/0x2210 net/core/rtnetlink.c:4012 rtnetlink_rcv_msg+0x791/0xcf0 net/core/rtnetlink.c:6902 netlink_rcv_skb+0x1e3/0x430 net/netlink/af_netlink.c:2543 netlink_unicast_kernel net/netlink/af_netlink.c:1322 [inline] netlink_unicast+0x7f6/0x990 net/netlink/af_netlink.c:1348 netlink_sendmsg+0x8e4/0xcb0 net/netlink/af_netlink.c:1892 sock_sendmsg_nosec net/socket.c:711 [inline] __sock_sendmsg+0x221/0x270 net/socket.c:726 __sys_sendto+0x363/0x4c0 net/socket.c:2208 __do_sys_sendto net/socket.c:2215 [inline] __se_sys_sendto net/socket.c:2211 [inline] __x64_sys_sendto+0xde/0x100 net/socket.c:2211 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7fbfaad87bbc RSP: 002b:00007ffc5eaaead0 EFLAGS: 00000293 ORIG_RAX: 000000000000002c RAX: ffffffffffffffda RBX: 00007fbfabaa4620 RCX: 00007fbfaad87bbc RDX: 0000000000000028 RSI: 00007fbfabaa4670 RDI: 0000000000000003 RBP: 0000000000000000 R08: 00007ffc5eaaeb24 R09: 000000000000000c R10: 0000000000000000 R11: 0000000000000293 R12: 0000000000000003 R13: 0000000000000000 R14: 00007fbfabaa4670 R15: 0000000000000000 rcu: rcu_preempt kthread starved for 9083 jiffies! g55857 f0x0 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:26264 pid:17 tgid:17 ppid:2 flags:0x00004000 Call Trace: context_switch kernel/sched/core.c:5369 [inline] __schedule+0x1850/0x4c30 kernel/sched/core.c:6756 __schedule_loop kernel/sched/core.c:6833 [inline] schedule+0x14b/0x320 kernel/sched/core.c:6848 schedule_timeout+0x15a/0x290 kernel/time/sleep_timeout.c:99 rcu_gp_fqs_loop+0x2df/0x1330 kernel/rcu/tree.c:2045 rcu_gp_kthread+0xa7/0x3b0 kernel/rcu/tree.c:2247 kthread+0x2f0/0x390 kernel/kthread.c:389 ret_from_fork+0x4b/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: CPU: 1 UID: 0 PID: 24 Comm: ksoftirqd/1 Not tainted 6.13.0-rc3-syzkaller-00765-gbb70b0d48d8e #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024 RIP: 0010:__sanitizer_cov_trace_pc+0x0/0x70 kernel/kcov.c:210 Code: 89 fb e8 23 00 00 00 48 8b 3d 74 8f 8f 0c 48 89 de 5b e9 63 f0 5a 00 0f 1f 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 0f 1e fa 48 8b 04 24 65 48 8b 0c 25 00 d6 03 00 65 8b 15 00 62 RSP: 0018:ffffc900001e5f18 EFLAGS: 00000246 RAX: 0000000000000100 RBX: 0000000000000000 RCX: ffff88801d2f8000 RDX: 0000000000000100 RSI: 0000000000000000 RDI: 0000000000000000 RBP: 1ffff1102f945487 R08: ffffffff898f6f3c R09: 1ffffffff2857910 R10: dffffc0000000000 R11: fffffbfff2857911 R12: 1ffff1102f945485 R13: dffffc0000000000 R14: ffff88817ca2a428 R15: ffff88817ca2a3c0 FS: 0000000000000000(0000) GS:ffff8880b8700000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000055556af8b000 CR3: 000000006db5c000 CR4: 00000000003526f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: nf_conntrack_put include/linux/netfilter/nf_conntrack_common.h:36 [inline] nf_reset_ct include/linux/skbuff.h:4949 [inline] skb_scrub_packet+0x1a4/0x440 net/core/skbuff.c:6119 ____dev_forward_skb include/linux/netdevice.h:4148 [inline] __dev_forward_skb2+0x273/0x720 net/core/dev.c:2187 veth_forward_skb drivers/net/veth.c:320 [inline] veth_xmit+0x453/0xad0 drivers/net/veth.c:375 __netdev_start_xmit include/linux/netdevice.h:5049 [inline] netdev_start_xmit include/linux/netdevice.h:5058 [inline] xmit_one net/core/dev.c:3590 [inline] dev_hard_start_xmit+0x27a/0x7d0 net/core/dev.c:3606 __dev_queue_xmit+0x1b73/0x3f50 net/core/dev.c:4434 dev_queue_xmit include/linux/netdevice.h:3212 [inline] br_dev_queue_push_xmit+0x726/0x900 net/bridge/br_forward.c:53 NF_HOOK+0x700/0x7c0 include/linux/netfilter.h:314 br_nf_post_routing+0xa20/0xe80 net/bridge/br_netfilter_hooks.c:997 nf_hook_entry_hookfn include/linux/netfilter.h:154 [inline] nf_hook_slow+0xc3/0x220 net/netfilter/core.c:626 nf_hook include/linux/netfilter.h:269 [inline] NF_HOOK+0x2a7/0x460 include/linux/netfilter.h:312 br_forward_finish+0xd8/0x130 net/bridge/br_forward.c:66 br_nf_forward_finish+0xb49/0xfb0 net/bridge/br_netfilter_hooks.c:693 NF_HOOK+0x700/0x7c0 include/linux/netfilter.h:314 br_nf_forward_ip+0x61e/0x7b0 net/bridge/br_netfilter_hooks.c:747 nf_hook_entry_hookfn include/linux/netfilter.h:154 [inline] nf_hook_slow+0xc3/0x220 net/netfilter/core.c:626 nf_hook include/linux/netfilter.h:269 [inline] NF_HOOK+0x2a7/0x460 include/linux/netfilter.h:312 __br_forward+0x489/0x660 net/bridge/br_forward.c:115 br_handle_frame_finish+0x18d2/0x2000 net/bridge/br_input.c:220 br_nf_hook_thresh net/bridge/br_netfilter_hooks.c:1198 [inline] br_nf_pre_routing_finish+0x15c8/0x1fd0 net/bridge/br_netfilter_hooks.c:453 NF_HOOK+0x700/0x7c0 include/linux/netfilter.h:314 br_nf_pre_routing+0xead/0x1470 net/bridge/br_netfilter_hooks.c:562 nf_hook_entry_hookfn include/linux/netfilter.h:154 [inline] nf_hook_bridge_pre net/bridge/br_input.c:282 [inline] br_handle_frame+0x9f3/0x1530 net/bridge/br_input.c:433 __netif_receive_skb_core+0x14eb/0x4690 net/core/dev.c:5566 __netif_receive_skb_one_core net/core/dev.c:5670 [inline] __netif_receive_skb+0x12f/0x650 net/core/dev.c:5785 process_backlog+0x662/0x15b0 net/core/dev.c:6117 __napi_poll+0xcb/0x490 net/core/dev.c:6883 napi_poll net/core/dev.c:6952 [inline] net_rx_action+0x89b/0x1240 net/core/dev.c:7074 handle_softirqs+0x2d4/0x9b0 kernel/softirq.c:561 run_ksoftirqd+0xca/0x130 kernel/softirq.c:950 smpboot_thread_fn+0x544/0xa30 kernel/smpboot.c:164 kthread+0x2f0/0x390 kernel/kthread.c:389 ret_from_fork+0x4b/0x80 arch/x86/kernel/process.c:147 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244 net_ratelimit: 31481 callbacks suppressed 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 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)