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 veth0_to_bridge with own address as source address (addr:d6:76:8b:2c:70:74, vlan:0) rcu: INFO: rcu_sched detected stalls on CPUs/tasks: rcu: 0-....: (10485 ticks this GP) idle=68a/1/0x4000000000000004 softirq=187812/188057 fqs=3316 rcu: (detected by 1, t=10503 jiffies, g=51845, q=4) Sending NMI from CPU 1 to CPUs 0: NMI backtrace for cpu 0 CPU: 0 PID: 20680 Comm: syz-executor.1 Not tainted 4.19.211-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:lock_acquire+0x15b/0x3c0 kernel/locking/lockdep.c:3908 Code: 48 0f a3 05 7f 8b db 09 0f 82 95 01 00 00 4c 8b 4c 24 08 44 89 ea 6a 00 48 89 ef 6a 00 45 89 f8 44 89 f1 44 89 e6 ff 74 24 60 74 24 18 49 c1 e9 09 49 83 f1 01 41 83 e1 01 e8 d0 a3 ff ff 48 RSP: 0018:ffff8880ba006ad8 EFLAGS: 00000006 RAX: 0000000000000000 RBX: ffff88804a462040 RCX: 0000000000000000 RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffffffff8d44a1a0 RBP: ffffffff8d44a1a0 R08: 0000000000000001 R09: 0000000000000086 R10: 0000000000000005 R11: ffffffff8c66501b R12: 0000000000000000 R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000001 FS: 00007f60f67d2700(0000) GS:ffff8880ba000000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f284248f108 CR3: 00000000530b1000 CR4: 00000000003406f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: __raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:110 [inline] _raw_spin_lock_irqsave+0x8c/0xc0 kernel/locking/spinlock.c:152 debug_object_activate+0x12f/0x450 lib/debugobjects.c:472 debug_hrtimer_activate kernel/time/hrtimer.c:416 [inline] debug_activate kernel/time/hrtimer.c:465 [inline] enqueue_hrtimer+0x27/0x3d0 kernel/time/hrtimer.c:972 __run_hrtimer kernel/time/hrtimer.c:1480 [inline] __hrtimer_run_queues+0xae6/0xe60 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:write_comp_data+0x6c/0x70 kernel/kcov.c:146 Code: 00 00 4e 8d 04 dd 28 00 00 00 4c 39 c6 72 1b 48 83 c7 01 4e 89 54 00 e0 4e 89 4c 00 e8 4a 89 54 00 f0 4a 89 4c d8 20 48 89 38 0f 1f 00 48 8b 0c 24 40 0f b6 d6 40 0f b6 f7 31 ff eb 80 48 8b RSP: 0018:ffff8880ba006f30 EFLAGS: 00000206 ORIG_RAX: ffffffffffffff13 RAX: 0000000000000101 RBX: 0000000000000001 RCX: ffffffff816d113a RDX: 0000000000000001 RSI: ffff88804a462040 RDI: 0000000000000005 RBP: 00007f60f925e01a R08: 0000000000000000 R09: 0000000000000001 R10: 0000000000000005 R11: 0000000000074071 R12: 0000000000000000 R13: 0000000000000000 R14: ffff88813bff0340 R15: 0000000000000040 bpf_jit_kallsyms_enabled include/linux/filter.h:953 [inline] bpf_prog_kallsyms_find kernel/bpf/core.c:509 [inline] is_bpf_text_address+0x9a/0x1b0 kernel/bpf/core.c:547 kernel_text_address kernel/extable.c:152 [inline] kernel_text_address+0xbd/0xf0 kernel/extable.c:122 __kernel_text_address+0x9/0x30 kernel/extable.c:107 unwind_get_return_address arch/x86/kernel/unwind_orc.c:297 [inline] unwind_get_return_address+0x51/0x90 arch/x86/kernel/unwind_orc.c:292 __save_stack_trace+0xaf/0x190 arch/x86/kernel/stacktrace.c:45 save_stack mm/kasan/kasan.c:448 [inline] set_track mm/kasan/kasan.c:460 [inline] kasan_kmalloc+0xeb/0x160 mm/kasan/kasan.c:553 slab_post_alloc_hook mm/slab.h:445 [inline] slab_alloc mm/slab.c:3397 [inline] kmem_cache_alloc_trace+0x11a/0x380 mm/slab.c:3623 kmalloc include/linux/slab.h:515 [inline] kzalloc include/linux/slab.h:709 [inline] nf_bridge_alloc include/net/netfilter/br_netfilter.h:9 [inline] nf_bridge_unshare net/bridge/br_netfilter_hooks.c:154 [inline] br_nf_forward_ip+0x34d/0x15e0 net/bridge/br_netfilter_hooks.c:577 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_forward+0x354/0xae0 net/bridge/br_forward.c:113 deliver_clone net/bridge/br_forward.c:129 [inline] maybe_deliver+0x292/0x380 net/bridge/br_forward.c:184 br_flood+0x158/0x4d0 net/bridge/br_forward.c:226 br_handle_frame_finish+0xf41/0x1410 net/bridge/br_input.c:167 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:constant_test_bit arch/x86/include/asm/bitops.h:317 [inline] RIP: 0010:PageCompound include/linux/page-flags.h:156 [inline] RIP: 0010:page_mapcount include/linux/mm.h:640 [inline] RIP: 0010:zap_pte_range mm/memory.c:1351 [inline] RIP: 0010:zap_pmd_range mm/memory.c:1463 [inline] RIP: 0010:zap_pud_range mm/memory.c:1492 [inline] RIP: 0010:zap_p4d_range mm/memory.c:1513 [inline] RIP: 0010:unmap_page_range+0x1480/0x2c50 mm/memory.c:1534 Code: 48 89 f8 83 e0 07 83 c0 03 38 d0 7c 08 84 d2 0f 85 39 15 00 00 83 ac 9c 00 01 00 00 01 31 f6 4c 89 ef e8 a3 92 04 00 4c 89 e8 <48> c1 e8 03 42 80 3c 30 00 0f 85 08 15 00 00 49 8b 5d 00 31 ff 48 RSP: 0018:ffff88803fcc7770 EFLAGS: 00000293 ORIG_RAX: ffffffffffffff13 RAX: ffffea00024a65c0 RBX: 0000000000000000 RCX: 1ffff1100948c51e RDX: 0000000000000000 RSI: ffffffff818ba07d RDI: 0000000000000286 RBP: ffffea00024a65c8 R08: 0000000000000000 R09: 0000000000000001 R10: 0000000000000000 R11: 0000000000000000 R12: dead000000000100 R13: ffffea00024a65c0 R14: dffffc0000000000 R15: 00007f60f89d2000 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: 0033:0x7f60f925e01a Code: Bad RIP value. RSP: 002b:00007f60f67d1fa8 EFLAGS: 00000206 ORIG_RAX: 0000000000 Lost 5 message(s)! net_ratelimit: 19031 callbacks suppressed bridge0: received packet on veth0_to_bridge with own address as source address (addr:d6:76:8b:2c:70:74, 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:aa:aa:aa:aa:aa:0c, vlan:0) bridge0: received packet on veth0_to_bridge with own address as source address (addr:d6:76:8b:2c:70:74, 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: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) net_ratelimit: 16075 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:d6:76:8b:2c:70:74, 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 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:aa:aa:aa:aa:aa:0c, vlan:0) bridge0: received packet on veth0_to_bridge with own address as source address (addr:d6:76:8b:2c:70:74, 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) ---------------- Code disassembly (best guess): 0: 48 0f a3 05 7f 8b db bt %rax,0x9db8b7f(%rip) # 0x9db8b87 7: 09 8: 0f 82 95 01 00 00 jb 0x1a3 e: 4c 8b 4c 24 08 mov 0x8(%rsp),%r9 13: 44 89 ea mov %r13d,%edx 16: 6a 00 pushq $0x0 18: 48 89 ef mov %rbp,%rdi 1b: 6a 00 pushq $0x0 1d: 45 89 f8 mov %r15d,%r8d 20: 44 89 f1 mov %r14d,%ecx 23: 44 89 e6 mov %r12d,%esi 26: ff 74 24 60 pushq 0x60(%rsp) * 2a: ff 74 24 18 pushq 0x18(%rsp) <-- trapping instruction 2e: 49 c1 e9 09 shr $0x9,%r9 32: 49 83 f1 01 xor $0x1,%r9 36: 41 83 e1 01 and $0x1,%r9d 3a: e8 d0 a3 ff ff callq 0xffffa40f 3f: 48 rex.W