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:0e:93:1f:87:73:dd, 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) rcu: INFO: rcu_sched self-detected stall on CPU rcu: 0-....: (10421 ticks this GP) idle=432/1/0x4000000000000004 softirq=53965/54188 fqs=5169 rcu: (t=10500 jiffies g=4869 q=20) NMI backtrace for cpu 0 CPU: 0 PID: 28697 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:arch_local_irq_restore arch/x86/include/asm/paravirt.h:789 [inline] RIP: 0010:console_unlock+0xe7b/0x1110 kernel/printk/printk.c:2468 Code: ff df 48 c1 e8 03 80 3c 08 00 0f 85 66 02 00 00 48 83 3d cf c3 a3 08 00 0f 84 9e 00 00 00 e8 ac c6 14 00 48 8b 7c 24 30 57 9d <0f> 1f 44 00 00 e9 9b fc ff ff e8 96 c6 14 00 0f 0b e8 8f c6 14 00 RSP: 0018:ffff8880ba007338 EFLAGS: 00000206 ORIG_RAX: ffffffffffffff13 RAX: ffff8880919e21c0 RBX: 0000000000000200 RCX: dffffc0000000000 RDX: 0000000000000100 RSI: ffffffff814dbec4 RDI: 0000000000000206 RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000000 R12: ffffffff8446efa0 R13: 000000000000007e R14: 0000000000000000 R15: ffffffff8a6dd090 vprintk_emit+0x2d1/0x740 kernel/printk/printk.c:1965 vprintk_func+0x79/0x180 kernel/printk/printk_safe.c:405 printk+0xba/0xed kernel/printk/printk.c:2040 br_fdb_update.part.0.cold+0x75/0x81 net/bridge/br_fdb.c:581 br_fdb_update+0x148/0x170 net/bridge/br_fdb.c:618 br_handle_frame_finish+0x7a2/0x1410 net/bridge/br_input.c:96 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:rcu_read_unlock include/linux/rcupdate.h:677 [inline] RIP: 0010:__unlock_page_memcg+0x4d/0x100 mm/memcontrol.c:1955 Code: 02 00 0f 85 b8 00 00 00 65 48 8b 04 25 c0 df 01 00 48 39 83 88 06 00 00 74 5a e8 9e d8 b1 ff 85 c0 74 09 80 3d b6 c7 6f 09 00 <74> 1e e8 ac a3 b2 ff 5b 48 c7 c2 5f c5 9e 81 be 01 00 00 00 48 c7 RSP: 0018:ffff8880a08cf730 EFLAGS: 00000246 ORIG_RAX: ffffffffffffff13 RAX: 0000000000000001 RBX: 0000000000000000 RCX: 0000000000000001 RDX: 0000000000000000 RSI: 0000000000000002 RDI: ffff8880919e2a44 RBP: ffffea0001582f00 R08: 0000000000000001 R09: 0000000000000000 R10: 0000000000000007 R11: 0000000000000000 R12: 0000000000000000 R13: 0000000000000000 R14: dead000000000100 R15: 00007f7750fe4000 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: 0033:0x7f7752f37ae9 Code: Bad RIP value. RSP: 002b:00007f77504ad188 EFLAGS: 00000246 ORIG_RAX: 0000000000000029 RAX: 0000000000000005 RBX: 00007f775304af60 RCX: 00007f7752f37ae9 RDX: 0000000000000300 RSI: 0000000000000002 RDI: 0000000000000011 RBP: 00007f7752f91f6d R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007fff2f08c9ef R14: 00007f77504ad300 R15: 0000000000022000 bridge0: received packet on veth0_to_bridge with own address as source address (addr:aa:aa:aa:aa:aa:0c, vlan:0) ieee802154 phy0 wpan0: encryption failed: -22 ieee802154 phy1 wpan1: encryption failed: -22 net_ratelimit: 1183 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 veth0_to_bridge with own address as source address (addr:0e:93:1f:87:73:dd, 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 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:0e:93:1f:87:73:dd, 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) net_ratelimit: 1406 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 veth0_to_bridge with own address as source address (addr:0e:93:1f:87:73:dd, 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 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:0e:93:1f:87:73:dd, vlan:0) bridge0: received packet on bridge_slave_0 with own address as source address (addr:aa:aa:aa:aa:aa:1b, vlan:0) ---------------- Code disassembly (best guess), 1 bytes skipped: 0: df 48 c1 fisttps -0x3f(%rax) 3: e8 03 80 3c 08 callq 0x83c800b 8: 00 0f add %cl,(%rdi) a: 85 66 02 test %esp,0x2(%rsi) d: 00 00 add %al,(%rax) f: 48 83 3d cf c3 a3 08 cmpq $0x0,0x8a3c3cf(%rip) # 0x8a3c3e6 16: 00 17: 0f 84 9e 00 00 00 je 0xbb 1d: e8 ac c6 14 00 callq 0x14c6ce 22: 48 8b 7c 24 30 mov 0x30(%rsp),%rdi 27: 57 push %rdi 28: 9d popfq * 29: 0f 1f 44 00 00 nopl 0x0(%rax,%rax,1) <-- trapping instruction 2e: e9 9b fc ff ff jmpq 0xfffffcce 33: e8 96 c6 14 00 callq 0x14c6ce 38: 0f 0b ud2 3a: e8 8f c6 14 00 callq 0x14c6ce