bridge0: received packet on bridge_slave_1 with own address as source address (addr:aa:aa:aa:aa:aa:1c, vlan:0) bridge0: received packet on veth1_to_bridge with own address as source address (addr:8e:f5:07:60:a1:80, vlan:0) bridge0: received packet on bridge_slave_1 with own address as source address (addr:aa:aa:aa:aa:aa:1c, vlan:0) watchdog: BUG: soft lockup - CPU#1 stuck for 22s! [syz-executor.1:32605] Modules linked in: irq event stamp: 2783373 hardirqs last enabled at (2783372): [] trace_hardirqs_on_thunk+0x1a/0x1c hardirqs last disabled at (2783373): [] trace_hardirqs_off_thunk+0x1a/0x1c softirqs last enabled at (2780184): [] __do_softirq+0x678/0x980 kernel/softirq.c:318 softirqs last disabled at (2780187): [] invoke_softirq kernel/softirq.c:372 [inline] softirqs last disabled at (2780187): [] irq_exit+0x215/0x260 kernel/softirq.c:412 CPU: 1 PID: 32605 Comm: syz-executor.1 Not tainted 4.19.211-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/29/2022 RIP: 0010:rb_first+0x29/0x80 lib/rbtree.c:507 Code: 90 48 b8 00 00 00 00 00 fc ff df 48 89 fa 53 48 c1 ea 03 48 83 ec 08 80 3c 02 00 75 46 48 bb 00 00 00 00 00 fc ff df 48 8b 07 <48> 85 c0 75 05 eb 1d 48 89 d0 48 8d 78 10 48 89 fa 48 c1 ea 03 80 RSP: 0018:ffff8880ba107ce0 EFLAGS: 00000246 ORIG_RAX: ffffffffffffff13 RAX: 0000000000000000 RBX: dffffc0000000000 RCX: ffffffff814bdebb RDX: 1ffff1101538753d RSI: 0000000000000004 RDI: ffff8880a9c3a9e8 RBP: 0000000000000101 R08: 0000000000000001 R09: ffffed101538752b R10: ffff8880a9c3a95b R11: 0000000000000000 R12: ffff8880a9c3a900 R13: ffff8880a9c3a958 R14: 0000000000000000 R15: 0000000000000000 FS: 00007f8d11a8b700(0000) GS:ffff8880ba100000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f4e1c72f000 CR3: 0000000009e6d000 CR4: 00000000003406e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: garp_gid_event net/802/garp.c:401 [inline] garp_join_timer+0x2c/0xf0 net/802/garp.c:422 call_timer_fn+0x177/0x700 kernel/time/timer.c:1338 expire_timers+0x243/0x4e0 kernel/time/timer.c:1375 __run_timers kernel/time/timer.c:1696 [inline] run_timer_softirq+0x21c/0x670 kernel/time/timer.c:1709 __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:zap_pte_range mm/memory.c:1340 [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+0x124a/0x2c50 mm/memory.c:1534 Code: 39 79 18 48 0f 43 41 18 4d 85 ed 48 89 41 18 0f 84 36 fe ff ff e8 36 e7 d6 ff 49 8d 6d 08 48 89 e8 48 c1 e8 03 42 80 3c 30 00 <0f> 85 df 16 00 00 49 8b 45 08 31 ff 4d 89 ec 48 89 c3 48 89 84 24 RSP: 0018:ffff88805c187770 EFLAGS: 00000246 ORIG_RAX: ffffffffffffff13 RAX: 1ffffd400050c8f9 RBX: 0000000000000001 RCX: ffff88805c1879b0 RDX: 0000000000000000 RSI: ffffffff818b9e3a RDI: ffff88805c1879c8 RBP: ffffea00028647c8 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000001 R11: 0000000000000000 R12: 80000000a191f007 R13: ffffea00028647c0 R14: dffffc0000000000 R15: 00007f8d12392000 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: 0033:0x7f8d13116209 Code: Bad RIP value. RSP: 002b:00007f8d11a8b168 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 RAX: ffffffffffffffe0 RBX: 00007f8d13228f60 RCX: 00007f8d13116209 RDX: 000000000000fc30 RSI: 0000000020000600 RDI: 0000000000000005 RBP: 00007f8d13170161 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007ffd1c7a82cf R14: 00007f8d11a8b300 R15: 0000000000022000 net_ratelimit: 11549 callbacks suppressed bridge0: received packet on bridge_slave_1 with own address as source address (addr:aa:aa:aa:aa:aa:1c, vlan:0) Sending NMI from CPU 1 to CPUs 0: bridge0: received packet on veth1_to_bridge with own address as source address (addr:8e:f5:07:60:a1:80, vlan:0) NMI backtrace for cpu 0 CPU: 0 PID: 9 Comm: ksoftirqd/0 Not tainted 4.19.211-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/29/2022 RIP: 0010:mark_irqflags kernel/locking/lockdep.c:2996 [inline] RIP: 0010:__lock_acquire+0x55a/0x3ff0 kernel/locking/lockdep.c:3373 Code: 38 d0 7f 08 84 c0 0f 85 a8 09 00 00 49 8d 6a 22 41 0f b6 5a 21 48 b8 00 00 00 00 00 fc ff df 48 89 ea 48 c1 ea 03 0f b6 04 02 <48> 89 ea 83 e2 07 38 d0 7f 08 84 c0 0f 85 a0 09 00 00 84 db 41 0f RSP: 0018:ffff8880ba007ab8 EFLAGS: 00000806 RAX: 0000000000000000 RBX: 0000000000000060 RCX: 0000000000000000 RDX: 1ffff11016b4996c RSI: 1ffff11016b49967 RDI: ffff8880b5a4cb61 RBP: ffff8880b5a4cb62 R08: 0000000000000001 R09: 0000000000000003 R10: ffff8880b5a4cb40 R11: ffffffff8c66501b R12: 00000000000c6001 R13: ffff8880b5a4c240 R14: ffff8880b5a4cb58 R15: 0000000000000001 FS: 0000000000000000(0000) GS:ffff8880ba000000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000000c00989fb48 CR3: 00000000a3e6c000 CR4: 00000000003406f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: lock_acquire+0x170/0x3c0 kernel/locking/lockdep.c:3908 __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_deactivate lib/debugobjects.c:540 [inline] debug_object_deactivate+0xfc/0x2e0 lib/debugobjects.c:529 debug_hrtimer_deactivate kernel/time/hrtimer.c:421 [inline] debug_deactivate kernel/time/hrtimer.c:471 [inline] __run_hrtimer kernel/time/hrtimer.c:1435 [inline] __hrtimer_run_queues+0x1bc/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_trylock_spinning kernel/printk/printk.c:1724 [inline] RIP: 0010:vprintk_emit+0x668/0x740 kernel/printk/printk.c:1964 Code: 48 b8 00 00 00 00 00 fc ff df 41 80 7c 05 00 00 0f 85 d9 00 00 00 48 83 3d 9c a2 a3 08 00 74 37 e8 7d a5 14 00 48 89 df 57 9d <0f> 1f 44 00 00 e9 82 fe ff ff e8 69 a5 14 00 0f 0b e8 62 a5 14 00 RSP: 0018:ffff8880b5a5f298 EFLAGS: 00000206 ORIG_RAX: ffffffffffffff13 RAX: ffff8880b5a4c240 RBX: 0000000000000206 RCX: 0000000000000000 RDX: 0000000000000100 RSI: ffffffff814ddff3 RDI: 0000000000000206 RBP: ffff8880b5a5f2d8 R08: ffffffff8cd4c210 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000000 R12: 000000000000006f R13: 1ffffffff13e3051 R14: 0000000000000200 R15: 0000000000000001 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 run_ksoftirqd+0x57/0x110 kernel/softirq.c:653 smpboot_thread_fn+0x655/0x9e0 kernel/smpboot.c:164 kthread+0x33f/0x460 kernel/kthread.c:259 ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:415