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 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:12:63:86:ab:b5:83, vlan:0) rcu: INFO: rcu_sched self-detected stall on CPU rcu: 0-....: (10484 ticks this GP) idle=b2a/1/0x4000000000000004 softirq=22334/22478 fqs=3371 rcu: (t=10502 jiffies g=781 q=29) NMI backtrace for cpu 0 CPU: 0 PID: 10370 Comm: syz-executor.5 Not tainted 4.19.211-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Call Trace: __dump_stack lib/dump_stack.c:77 [inline] dump_stack+0x1fc/0x2ef lib/dump_stack.c:118 nmi_cpu_backtrace.cold+0x63/0xa2 lib/nmi_backtrace.c:101 nmi_trigger_cpumask_backtrace+0x1a6/0x1f0 lib/nmi_backtrace.c:62 trigger_single_cpu_backtrace include/linux/nmi.h:164 [inline] rcu_dump_cpu_stacks+0x15f/0x19c kernel/rcu/tree.c:1340 print_cpu_stall kernel/rcu/tree.c:1478 [inline] check_cpu_stall kernel/rcu/tree.c:1550 [inline] __rcu_pending kernel/rcu/tree.c:3293 [inline] rcu_pending kernel/rcu/tree.c:3336 [inline] rcu_check_callbacks.cold+0x62d/0xe19 kernel/rcu/tree.c:2682 update_process_times+0x2a/0x70 kernel/time/timer.c:1650 tick_sched_handle+0x9b/0x180 kernel/time/tick-sched.c:168 tick_sched_timer+0xfc/0x290 kernel/time/tick-sched.c:1278 __run_hrtimer kernel/time/hrtimer.c:1465 [inline] __hrtimer_run_queues+0x3f6/0xe60 kernel/time/hrtimer.c:1527 hrtimer_interrupt+0x326/0x9e0 kernel/time/hrtimer.c:1585 local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1071 [inline] smp_apic_timer_interrupt+0x10c/0x550 arch/x86/kernel/apic/apic.c:1096 apic_timer_interrupt+0xf/0x20 arch/x86/entry/entry_64.S:894 RIP: 0010:check_kcov_mode kernel/kcov.c:67 [inline] RIP: 0010:__sanitizer_cov_trace_pc+0x14/0x50 kernel/kcov.c:101 Code: 35 00 e9 23 fe ff ff 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 48 8b 34 24 65 48 8b 04 25 c0 df 01 00 65 8b 15 cc 59 9f 7e <81> e2 00 01 1f 00 75 2b 8b 90 60 13 00 00 83 fa 02 75 20 48 8b 88 RSP: 0018:ffff8880ba006cf8 EFLAGS: 00000246 ORIG_RAX: ffffffffffffff13 RAX: ffff88804cf28600 RBX: ffff8880a95d6640 RCX: ffffffff870866a8 RDX: 0000000000000101 RSI: ffffffff87086829 RDI: 0000000000000004 RBP: 0000000000000008 R08: 0000000000000000 R09: 0000000000000008 R10: 0000000000000004 R11: 0000000000000000 R12: 0000000000000000 R13: 0000000000000100 R14: 000000000000000d R15: dffffc0000000000 find_match net/ipv6/route.c:670 [inline] find_rr_leaf net/ipv6/route.c:719 [inline] rt6_select net/ipv6/route.c:769 [inline] fib6_table_lookup+0x469/0xf40 net/ipv6/route.c:1876 ip6_pol_route+0x180/0x1270 net/ipv6/route.c:1909 fib6_rule_lookup+0x10b/0x4e0 net/ipv6/fib6_rules.c:118 ip6_route_input_lookup net/ipv6/route.c:1990 [inline] ip6_route_input+0x6c0/0xaa0 net/ipv6/route.c:2125 ip6_rcv_finish_core.constprop.0.isra.0+0xd7/0x550 net/ipv6/ip6_input.c:63 ip6_rcv_finish+0x176/0x2f0 net/ipv6/ip6_input.c:74 ip_sabotage_in net/bridge/br_netfilter_hooks.c:847 [inline] ip_sabotage_in+0x17d/0x1d0 net/bridge/br_netfilter_hooks.c:841 nf_hook_entry_hookfn include/linux/netfilter.h:119 [inline] nf_hook_slow+0xc5/0x1e0 net/netfilter/core.c:511 nf_hook include/linux/netfilter.h:244 [inline] NF_HOOK include/linux/netfilter.h:287 [inline] ipv6_rcv+0x26a/0x3f0 net/ipv6/ip6_input.c:273 __netif_receive_skb_one_core+0x114/0x180 net/core/dev.c:4954 __netif_receive_skb+0x27/0x1c0 net/core/dev.c:5066 netif_receive_skb_internal+0xf0/0x3f0 net/core/dev.c:5156 NF_HOOK include/linux/netfilter.h:289 [inline] br_pass_frame_up+0x309/0x6c0 net/bridge/br_input.c:69 br_handle_frame_finish+0x6f2/0x1410 net/bridge/br_input.c:173 br_nf_hook_thresh+0x2a3/0x330 net/bridge/br_netfilter_hooks.c:1014 br_nf_pre_routing_finish_ipv6+0x6e3/0xd40 net/bridge/br_netfilter_ipv6.c:210 NF_HOOK include/linux/netfilter.h:289 [inline] br_nf_pre_routing_ipv6+0x3f4/0x860 net/bridge/br_netfilter_ipv6.c:240 br_nf_pre_routing+0xf05/0x1500 net/bridge/br_netfilter_hooks.c:494 nf_hook_entry_hookfn include/linux/netfilter.h:119 [inline] nf_hook_slow+0xc5/0x1e0 net/netfilter/core.c:511 nf_hook include/linux/netfilter.h:244 [inline] NF_HOOK include/linux/netfilter.h:287 [inline] br_handle_frame+0xa60/0x13b0 net/bridge/br_input.c:306 __netif_receive_skb_core+0x929/0x3270 net/core/dev.c:4876 __netif_receive_skb_one_core+0xae/0x180 net/core/dev.c:4952 __netif_receive_skb+0x27/0x1c0 net/core/dev.c:5066 process_backlog+0x241/0x700 net/core/dev.c:5849 napi_poll net/core/dev.c:6280 [inline] net_rx_action+0x4ac/0xfb0 net/core/dev.c:6346 __do_softirq+0x265/0x980 kernel/softirq.c:292 invoke_softirq kernel/softirq.c:372 [inline] irq_exit+0x215/0x260 kernel/softirq.c:412 exiting_irq arch/x86/include/asm/apic.h:536 [inline] smp_apic_timer_interrupt+0x136/0x550 arch/x86/kernel/apic/apic.c:1098 apic_timer_interrupt+0xf/0x20 arch/x86/entry/entry_64.S:894 RIP: 0010:page_pgdat include/linux/mm.h:1111 [inline] RIP: 0010:__mod_lruvec_page_state include/linux/memcontrol.h:693 [inline] RIP: 0010:page_remove_file_rmap+0x111/0xa30 mm/rmap.c:1241 Code: 9c 06 00 00 e8 d0 d3 d2 ff 48 c1 eb 3a 48 b8 00 00 00 00 00 fc ff df 48 8d 3c dd 40 dd 26 8b 48 89 fa 48 c1 ea 03 80 3c 02 00 <0f> 85 2c 08 00 00 49 8d 7e 38 48 8b 2c dd 40 dd 26 8b 48 b8 00 00 RSP: 0018:ffff88804ca0f700 EFLAGS: 00000246 ORIG_RAX: ffffffffffffff13 RAX: dffffc0000000000 RBX: 0000000000000000 RCX: ffffffff818fb191 RDX: 1ffffffff164dba8 RSI: ffffffff818fb1a0 RDI: ffffffff8b26dd40 RBP: ffffea00014ec2c0 R08: 0000000000000001 R09: ffffffffffffffff R10: 0000000000000007 R11: 0000000000000000 R12: 0000000000000000 R13: 00000000ffffffff R14: ffffea00014ec2c0 R15: 00007fc30eda0000 page_remove_rmap+0xe5/0x120 mm/rmap.c:1297 zap_pte_range mm/memory.c:1350 [inline] zap_pmd_range mm/memory.c:1463 [inline] zap_pud_range mm/memory.c:1492 [inline] zap_p4d_range mm/memory.c:1513 [inline] unmap_page_range+0x147d/0x2c50 mm/memory.c:1534 unmap_single_vma+0x198/0x300 mm/memory.c:1579 unmap_vmas+0xa9/0x180 mm/memory.c:1609 exit_mmap+0x2b9/0x530 mm/mmap.c:3093 __mmput kernel/fork.c:1016 [inline] mmput+0x14e/0x4a0 kernel/fork.c:1037 exit_mm kernel/exit.c:549 [inline] do_exit+0xaec/0x2be0 kernel/exit.c:857 do_group_exit+0x125/0x310 kernel/exit.c:967 get_signal+0x3f2/0x1f70 kernel/signal.c:2589 do_signal+0x8f/0x1670 arch/x86/kernel/signal.c:799 exit_to_usermode_loop+0x204/0x2a0 arch/x86/entry/common.c:163 prepare_exit_to_usermode arch/x86/entry/common.c:198 [inline] syscall_return_slowpath arch/x86/entry/common.c:271 [inline] do_syscall_64+0x538/0x620 arch/x86/entry/common.c:296 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x7fc3108c6ae9 Code: Bad RIP value. RSP: 002b:00007fc30de3c218 EFLAGS: 00000246 ORIG_RAX: 00000000000000ca RAX: fffffffffffffe00 RBX: 00007fc3109d9f68 RCX: 00007fc3108c6ae9 RDX: 0000000000000000 RSI: 0000000000000080 RDI: 00007fc3109d9f68 RBP: 00007fc3109d9f60 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00007fc3109d9f6c R13: 00007fff3bc47a9f R14: 00007fc30de3c300 R15: 0000000000022000 net_ratelimit: 11898 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:12:63:86:ab:b5:83, 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 bridge_slave_0 with own address as source address (addr:aa:aa:aa:aa:aa:1b, 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) 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:12:63:86:ab:b5:83, vlan:0) bridge0: received packet on veth0_to_bridge with own address as source address (addr:12:63:86:ab:b5:83, vlan:0) net_ratelimit: 14844 callbacks suppressed bridge0: received packet on veth0_to_bridge with own address as source address (addr:12:63:86:ab:b5:83, vlan:0) bridge0: received packet on veth0_to_bridge with own address as source address (addr:12:63:86:ab:b5:83, 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:12:63:86:ab:b5:83, 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 bridge_slave_0 with own address as source address (addr:aa:aa:aa:aa:aa:1b, 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:1b, vlan:0) bridge0: received packet on veth0_to_bridge with own address as source address (addr:12:63:86:ab:b5:83, vlan:0) bridge0: received packet on veth0_to_bridge with own address as source address (addr:12:63:86:ab:b5:83, vlan:0) ---------------- Code disassembly (best guess), 2 bytes skipped: 0: e9 23 fe ff ff jmpq 0xfffffe28 5: 90 nop 6: 90 nop 7: 90 nop 8: 90 nop 9: 90 nop a: 90 nop b: 90 nop c: 90 nop d: 90 nop e: 90 nop f: 90 nop 10: 90 nop 11: 90 nop 12: 90 nop 13: 90 nop 14: 48 8b 34 24 mov (%rsp),%rsi 18: 65 48 8b 04 25 c0 df mov %gs:0x1dfc0,%rax 1f: 01 00 21: 65 8b 15 cc 59 9f 7e mov %gs:0x7e9f59cc(%rip),%edx # 0x7e9f59f4 * 28: 81 e2 00 01 1f 00 and $0x1f0100,%edx <-- trapping instruction 2e: 75 2b jne 0x5b 30: 8b 90 60 13 00 00 mov 0x1360(%rax),%edx 36: 83 fa 02 cmp $0x2,%edx 39: 75 20 jne 0x5b 3b: 48 rex.W 3c: 8b .byte 0x8b 3d: 88 .byte 0x88