bridge0: received packet on veth0_to_bridge with own address as source address (addr:56:a0:c8:1b:e3:cb, 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) watchdog: BUG: soft lockup - CPU#1 stuck for 23s! [syz-executor.3:12809] Modules linked in: irq event stamp: 3384249 hardirqs last enabled at (3384248): [] trace_hardirqs_on_thunk+0x1a/0x1c hardirqs last disabled at (3384249): [] trace_hardirqs_off_thunk+0x1a/0x1c softirqs last enabled at (3337260): [] __do_softirq+0x678/0x980 kernel/softirq.c:318 softirqs last disabled at (3337263): [] invoke_softirq kernel/softirq.c:372 [inline] softirqs last disabled at (3337263): [] irq_exit+0x215/0x260 kernel/softirq.c:412 CPU: 1 PID: 12809 Comm: syz-executor.3 Not tainted 4.19.211-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:__nlmsg_put+0x0/0x1c0 net/netlink/af_netlink.c:2166 Code: ff ff 4c 89 ef e8 50 04 f8 fa e9 69 ff ff ff e8 d6 04 f8 fa e9 f3 fd ff ff e8 cc 04 f8 fa e9 1b fe ff ff 0f 1f 80 00 00 00 00 <41> 57 41 89 cf 41 56 45 89 ce 41 55 41 89 f5 41 54 49 89 fc 55 53 RSP: 0018:ffff8880ba107400 EFLAGS: 00000206 ORIG_RAX: ffffffffffffff13 RAX: ffff888050c600c0 RBX: 0000000000000000 RCX: 000000000000001c RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffff88804e8d12c0 RBP: ffff8880aae2ef00 R08: 000000000000000c R09: 0000000000000000 R10: 0000000000000005 R11: 0000000000000000 R12: ffff88804e8d12c0 R13: ffff888052978e80 R14: 000000000000001c R15: 00000000ffffe712 FS: 00007f0813e2a700(0000) GS:ffff8880ba100000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000001b2d32d000 CR3: 00000000af107000 CR4: 00000000003406e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: nlmsg_put include/net/netlink.h:478 [inline] fdb_fill_info+0x1a8/0x8a0 net/bridge/br_fdb.c:642 fdb_notify+0xc1/0x180 net/bridge/br_fdb.c:707 br_fdb_update.part.0+0x2d4/0x8c0 net/bridge/br_fdb.c:600 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:__read_once_size include/linux/compiler.h:263 [inline] RIP: 0010:compound_head include/linux/page-flags.h:142 [inline] RIP: 0010:PageAnon include/linux/page-flags.h:418 [inline] RIP: 0010:mm_counter include/linux/mm.h:1649 [inline] RIP: 0010:zap_pte_range mm/memory.c:1349 [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+0x1304/0x2c50 mm/memory.c:1534 Code: e8 91 e6 d6 ff 83 e3 20 31 ff 89 de e8 f5 e7 d6 ff 85 db 0f 85 a9 07 00 00 e8 78 e6 d6 ff 48 89 e8 48 c1 e8 03 42 80 3c 30 00 <0f> 85 f7 15 00 00 49 8b 45 08 31 ff 4c 89 eb 49 89 c4 48 89 84 24 RSP: 0018:ffff8880443cf770 EFLAGS: 00000246 ORIG_RAX: ffffffffffffff13 RAX: 1ffffd40004a7009 RBX: 0000000000000000 RCX: ffffffff818b9eeb RDX: 0000000000000000 RSI: ffffffff818b9ef8 RDI: 0000000000000005 RBP: ffffea0002538048 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000005 R11: 0000000000000000 R12: 0000000000000000 R13: ffffea0002538040 R14: dffffc0000000000 R15: 00007f0814f26000 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: 0033:0x7f08168d5ae9 Code: Bad RIP value. RSP: 002b:00007f0813e2a188 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5 RAX: ffffffffffffff9b RBX: 00007f08169e9020 RCX: 00007f08168d5ae9 RDX: 000000002015bffc RSI: 0000000020000240 RDI: 0000000000000000 RBP: 00007f081692ff6d R08: 0000000020000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007ffcf70c11df R14: 00007f0813e2a300 R15: 0000000000022000 Sending NMI from CPU 1 to CPUs 0: NMI backtrace for cpu 0 CPU: 0 PID: 12761 Comm: syz-executor.4 Not tainted 4.19.211-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:lock_is_held_type+0xc/0x210 kernel/locking/lockdep.c:3935 Code: 8b e8 88 ac 4d 00 e9 41 ff ff ff e8 0e ad 4d 00 eb ad 66 66 2e 0f 1f 84 00 00 00 00 00 90 48 b8 00 00 00 00 00 fc ff df 41 54 <55> 48 89 fd 53 65 48 8b 1c 25 c0 df 01 00 48 8d bb 84 08 00 00 48 RSP: 0018:ffff8880ba007228 EFLAGS: 00000002 RAX: dffffc0000000000 RBX: 0000000000000003 RCX: 0000000000000000 RDX: 1ffffffff148be2c RSI: 00000000ffffffff RDI: ffffffff89f85f20 RBP: ffff8880450ba500 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000005 R11: ffffffff8c66501b R12: 0000000000010101 R13: ffff8880ab241758 R14: ffff8880ba024d40 R15: dffffc0000000000 FS: 00007f07efc83700(0000) GS:ffff8880ba000000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000000c007eb1aa8 CR3: 00000000af107000 CR4: 00000000003406f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: lock_is_held include/linux/lockdep.h:344 [inline] rcu_read_lock_sched_held+0x16c/0x1d0 kernel/rcu/update.c:118 trace_hrtimer_expire_entry include/trace/events/timer.h:228 [inline] __run_hrtimer kernel/time/hrtimer.c:1464 [inline] __hrtimer_run_queues+0xc67/0xe60 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:br_mdb_get+0x156/0x470 net/bridge/br_multicast.c:164 Code: e8 0f 71 3a fa 49 8d 7d 30 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03 0f b6 04 02 84 c0 74 08 3c 03 0f 8e b1 02 00 00 <45> 8b 65 30 31 ff 44 89 e6 e8 4c 72 3a fa 45 85 e4 75 66 e8 d2 70 RSP: 0018:ffff8880ba007500 EFLAGS: 00000246 ORIG_RAX: ffffffffffffff13 RAX: 0000000000000000 RBX: 1ffff11017400ea1 RCX: ffffffff87281453 RDX: 1ffff11009d156be RSI: ffffffff87281461 RDI: ffff88804e8ab5f0 RBP: ffff8880ba0075b0 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000001 R11: 0000000000000000 R12: 0000000000000000 R13: ffff88804e8ab5c0 R14: 0000000000000001 R15: ffff8880ab47c500 br_handle_frame_finish+0xb3e/0x1410 net/bridge/br_input.c:136 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:pte_val arch/x86/include/asm/paravirt.h:389 [inline] RIP: 0010:pte_to_swp_entry include/linux/swapops.h:73 [inline] RIP: 0010:zap_pte_range mm/memory.c:1361 [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+0xa83/0x2c50 mm/memory.c:1534 Code: b8 b4 cf 89 49 81 c7 00 10 00 00 48 89 6c 24 30 c7 84 24 cc 00 00 00 00 00 00 00 48 c1 e8 03 4c 01 f0 48 89 84 24 88 00 00 00 <49> 8d 87 00 f0 ff ff 48 89 44 24 70 e8 dc ee d6 ff 48 8b 44 24 30 RSP: 0018:ffff888049047770 EFLAGS: 00000206 ORIG_RAX: ffffffffffffff13 RAX: 00007f07f1839000 RBX: 00007f07f1885000 RCX: ffffffff818b9c86 RDX: 00007f07f1838000 RSI: ffff8880450ba500 RDI: 0000000000000006 RBP: ffffea000236a230 R08: 0000000000000000 R09: 00007f07f1885000 R10: 0000000000000006 R11: 0000000000000000 R12: dead000000000100 R13: ffffea000236a200 R14: dffffc0000000000 R15: 00007f07f1839000 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: 0033:0x7f07f270dae9 Code: Bad RIP value. RSP: 002b:00007f07efc83188 EFLAGS: 00000246 ORIG_RAX: 0000000000000038 RAX: fffffffffffffff4 RBX: 00007f07f2820f60 RCX: 00007f07f270dae9 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000 RBP: 00007f07f2767f6d R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007ffe8b1194df R14: 00007f07efc83300 R15: 0000000000022000 ---------------- Code disassembly (best guess), 1 bytes skipped: 0: ff 4c 89 ef decl -0x11(%rcx,%rcx,4) 4: e8 50 04 f8 fa callq 0xfaf80459 9: e9 69 ff ff ff jmpq 0xffffff77 e: e8 d6 04 f8 fa callq 0xfaf804e9 13: e9 f3 fd ff ff jmpq 0xfffffe0b 18: e8 cc 04 f8 fa callq 0xfaf804e9 1d: e9 1b fe ff ff jmpq 0xfffffe3d 22: 0f 1f 80 00 00 00 00 nopl 0x0(%rax) * 29: 41 57 push %r15 <-- trapping instruction 2b: 41 89 cf mov %ecx,%r15d 2e: 41 56 push %r14 30: 45 89 ce mov %r9d,%r14d 33: 41 55 push %r13 35: 41 89 f5 mov %esi,%r13d 38: 41 54 push %r12 3a: 49 89 fc mov %rdi,%r12 3d: 55 push %rbp 3e: 53 push %rbx