bridge0: received packet on bridge_slave_0 with own address as source address (addr:aa:aa:aa:aa:aa:1b, vlan:0) rcu: INFO: rcu_preempt detected stalls on CPUs/tasks: rcu: Tasks blocked on level-0 rcu_node (CPUs 0-1): P6919/1:b..l rcu: (detected by 1, t=10503 jiffies, g=15105, q=125 ncpus=2) task:syz-executor state:R running task stack:27328 pid:6919 tgid:6919 ppid:5822 flags:0x00000000 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:__unwind_start+0x182/0x740 arch/x86/kernel/unwind_orc.c:714 Code: 49 89 04 24 48 89 d8 48 c1 e8 03 80 3c 10 00 74 12 48 89 df e8 2f 03 ba 00 48 ba 00 00 00 00 00 fc ff df 48 8b 04 24 48 89 03 55 02 00 00 4d 85 e4 0f 84 70 01 00 00 49 8d 9c 24 88 00 00 00 RSP: 0018:ffffc9000dc5f780 EFLAGS: 00000246 RAX: ffffc9000dc5f828 RBX: ffffc9000dc5f820 RCX: ffffc9000dc5f780 RDX: dffffc0000000000 RSI: ffffffff814bd168 RDI: ffffc9000dc5f840 RBP: ffffc9000dc5f828 R08: ffffc9000dc5f83f R09: 0000000000000000 R10: ffffc9000dc5f7e0 R11: fffff52001b8bf08 R12: ffffc9000dc5f818 R13: ffffc9000dc5f808 R14: ffffc9000dc5f7e0 R15: 1ffff92001b8bf01 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] kmem_cache_alloc_noprof+0x1d9/0x380 mm/slub.c:4175 vm_area_alloc+0x24/0x1d0 kernel/fork.c:472 __bprm_mm_init fs/exec.c:259 [inline] bprm_mm_init fs/exec.c:393 [inline] alloc_bprm+0x374/0xa30 fs/exec.c:1544 do_execveat_common+0x18c/0x6f0 fs/exec.c:1900 do_execve fs/exec.c:2023 [inline] __do_sys_execve fs/exec.c:2099 [inline] __se_sys_execve fs/exec.c:2094 [inline] __x64_sys_execve+0x92/0xb0 fs/exec.c:2094 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: 0033:0x7f03903b93f7 RSP: 002b:00007f03910cbdf8 EFLAGS: 00000206 ORIG_RAX: 000000000000003b RAX: ffffffffffffffda RBX: 00007ffeac0f4ef2 RCX: 00007f03903b93f7 RDX: 00007ffeac0f3690 RSI: 00007ffeac0f38d0 RDI: 00007ffeac0f4ef2 RBP: 00007f03910cbe70 R08: 00007f03910cbf20 R09: 0000000000000000 R10: 0000000000000008 R11: 0000000000000206 R12: 00007ffeac0f38d0 R13: 00007ffeac0f3690 R14: 0000000000000000 R15: 0000000000000000 rcu: rcu_preempt kthread starved for 10536 jiffies! g15105 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:24600 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-00691-gae418e95dd93 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024 RIP: 0010:__sanitizer_cov_trace_const_cmp8+0x0/0x90 kernel/kcov.c:320 Code: 10 48 89 74 0a 18 4c 89 44 0a 20 c3 cc cc cc cc 66 2e 0f 1f 84 00 00 00 00 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 0f 1e fa 4c 8b 04 24 65 48 8b 0c 25 00 d6 03 00 65 8b 05 20 5d RSP: 0018:ffffc900001e6908 EFLAGS: 00000246 RAX: ffffffff8a68d1ff RBX: 0000000000000000 RCX: ffff88801dae8000 RDX: 0000000000000100 RSI: 0000000000000000 RDI: 0000000000000002 RBP: 1ffff11034aed59b R08: ffffffff8a68d1f5 R09: 0000000000000000 R10: ffffc900001e6a70 R11: ffffffff8a68cff0 R12: ffff8881a576acd8 R13: dffffc0000000000 R14: ffff88805d041e40 R15: ffff8881a576ac80 FS: 0000000000000000(0000) GS:ffff8880b8700000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f03910cbff8 CR3: 000000005fa0c000 CR4: 00000000003526f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: ip6_rcv_finish_core+0xec/0x410 net/ipv6/ip6_input.c:52 ip6_rcv_finish+0x144/0x180 net/ipv6/ip6_input.c:77 ip_sabotage_in+0x203/0x290 net/bridge/br_netfilter_hooks.c:1021 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+0x29e/0x450 include/linux/netfilter.h:312 __netif_receive_skb_one_core net/core/dev.c:5672 [inline] __netif_receive_skb+0x1ea/0x650 net/core/dev.c:5785 netif_receive_skb_internal net/core/dev.c:5871 [inline] netif_receive_skb+0x1e8/0x890 net/core/dev.c:5930 NF_HOOK+0x9e/0x400 include/linux/netfilter.h:314 br_handle_frame_finish+0x18ed/0x1fe0 br_nf_hook_thresh+0x472/0x590 br_nf_pre_routing_finish_ipv6+0xaa0/0xdd0 NF_HOOK include/linux/netfilter.h:314 [inline] br_nf_pre_routing_ipv6+0x379/0x770 net/bridge/br_netfilter_ipv6.c:184 nf_hook_entry_hookfn include/linux/netfilter.h:154 [inline] nf_hook_bridge_pre net/bridge/br_input.c:277 [inline] br_handle_frame+0x9fd/0x1530 net/bridge/br_input.c:424 __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 bridge0: received packet on veth0_to_bridge with own address as source address (addr:22:03:dc:62:cc:00, 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:22:03:dc:62:cc:00, vlan:0) bridge0: received packet on veth0_to_bridge with own address as source address (addr:22:03:dc:62:cc:00, 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:22:03:dc:62:cc:00, 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:22:03:dc:62:cc:00, vlan:0) bridge0: received packet on veth0_to_bridge with own address as source address (addr:22:03:dc:62:cc:00, vlan:0) bridge0: received packet on bridge_slave_0 with own address as source address (addr:aa:aa:aa:aa:aa:1b, vlan:0)