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) watchdog: BUG: soft lockup - CPU#1 stuck for 21s! [syz-executor.2:27249] Modules linked in: irq event stamp: 2561237 hardirqs last enabled at (2561236): [] trace_hardirqs_on_thunk+0x1a/0x1c hardirqs last disabled at (2561237): [] trace_hardirqs_off_thunk+0x1a/0x1c softirqs last enabled at (2554768): [] __do_softirq+0x678/0x980 kernel/softirq.c:318 softirqs last disabled at (2554771): [] invoke_softirq kernel/softirq.c:372 [inline] softirqs last disabled at (2554771): [] irq_exit+0x215/0x260 kernel/softirq.c:412 CPU: 1 PID: 27249 Comm: syz-executor.2 Not tainted 4.19.211-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:get_current arch/x86/include/asm/current.h:15 [inline] RIP: 0010:__sanitizer_cov_trace_pc+0x4/0x50 kernel/kcov.c:100 Code: e8 11 dd 35 00 e9 ab fe ff ff 4c 89 ef e8 04 dd 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 RSP: 0018:ffff8880ba107808 EFLAGS: 00000297 ORIG_RAX: ffffffffffffff13 RAX: 0000000000000101 RBX: ffff88804a9307c0 RCX: ffffffff872a938a RDX: 0000000000000002 RSI: ffffffff872a9399 RDI: 0000000000000001 RBP: ffff88804bc3a400 R08: 0000000000000001 R09: 0000000000000003 R10: 0000000000000001 R11: 000000006634e136 R12: ffff88804bc3a404 R13: 0000000000000002 R14: ffff88804a930850 R15: ffff88804bc3a400 FS: 00007fe8a5ece700(0000) GS:ffff8880ba100000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000555b77cee8e0 CR3: 000000009a88a000 CR4: 00000000003426e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: setup_pre_routing+0x89/0x450 net/bridge/br_netfilter_hooks.c:452 br_nf_pre_routing_ipv6+0x1ed/0x860 net/bridge/br_netfilter_ipv6.c:231 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:schedule_debug kernel/sched/core.c:3329 [inline] RIP: 0010:__schedule+0x110/0x2040 kernel/sched/core.c:3439 Code: 89 fa 48 c1 ea 03 80 3c 02 00 0f 85 f2 19 00 00 48 b8 00 00 00 00 00 fc ff df 4d 8b 74 24 18 4c 89 f2 48 c1 ea 03 80 3c 02 00 <0f> 85 c5 19 00 00 49 81 3e 9d 6e ac 57 0f 85 09 1f 00 00 65 8b 05 RSP: 0018:ffff8880464ff3a8 EFLAGS: 00000246 ORIG_RAX: ffffffffffffff13 RAX: dffffc0000000000 RBX: 0000000000000001 RCX: ffffc90014366000 RDX: 1ffff11008c9f000 RSI: ffffffff83771e31 RDI: ffff88809f6b4498 RBP: ffff8880464ff470 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000005 R11: 0000000000000000 R12: ffff88809f6b4480 R13: 000000000002b0c0 R14: ffff8880464f8000 R15: ffff8880ba12b0c0 preempt_schedule_irq+0xb0/0x140 kernel/sched/core.c:3744 retint_kernel+0x1b/0x2d RIP: 0010:preempt_count arch/x86/include/asm/preempt.h:23 [inline] RIP: 0010:preempt_schedule+0x0/0x60 kernel/sched/core.c:3664 Code: 31 ff 45 31 ed e8 e0 1c 33 f9 eb d6 48 89 ef e8 26 fb 7f f9 eb ac e8 ef fd 7f f9 eb da 66 66 2e 0f 1f 84 00 00 00 00 00 66 90 <65> 8b 05 f9 77 e9 77 a9 ff ff ff 7f 74 01 c3 48 c7 c0 80 82 f1 89 RSP: 0018:ffff8880464ff550 EFLAGS: 00000246 ORIG_RAX: ffffffffffffff13 RAX: 0000000000000001 RBX: 1ffff11008c9febf RCX: 0000000000000000 RDX: 0000000000000000 RSI: ffff8880464ff540 RDI: 0000000000000001 RBP: ffff8880464ff5a0 R08: 0000000000000001 R09: 0000000000000001 R10: ffff8880464ff73f R11: 0000000000074071 R12: ffff8880464f8000 R13: ffff8880464ff715 R14: ffff8880464ff6e0 R15: ffffffff8b99d036 ___preempt_schedule+0x16/0x18 unwind_next_frame+0xf07/0x1400 arch/x86/kernel/unwind_orc.c:579 __save_stack_trace+0x9f/0x190 arch/x86/kernel/stacktrace.c:44 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+0x110/0x370 mm/slab.c:3557 alloc_inode+0xab/0x180 fs/inode.c:213 new_inode_pseudo fs/inode.c:911 [inline] new_inode+0x1d/0xf0 fs/inode.c:940 debugfs_get_inode+0x1a/0x130 fs/debugfs/inode.c:37 __debugfs_create_file+0xb2/0x480 fs/debugfs/inode.c:357 kvm_arch_create_vcpu_debugfs+0x52/0x180 arch/x86/kvm/debugfs.c:48 kvm_create_vcpu_debugfs arch/x86/kvm/../../../virt/kvm/kvm_main.c:2703 [inline] kvm_vm_ioctl_create_vcpu arch/x86/kvm/../../../virt/kvm/kvm_main.c:2744 [inline] kvm_vm_ioctl+0xd8c/0x1700 arch/x86/kvm/../../../virt/kvm/kvm_main.c:3238 vfs_ioctl fs/ioctl.c:46 [inline] file_ioctl fs/ioctl.c:501 [inline] do_vfs_ioctl+0xcdb/0x12e0 fs/ioctl.c:688 ksys_ioctl+0x9b/0xc0 fs/ioctl.c:705 __do_sys_ioctl fs/ioctl.c:712 [inline] __se_sys_ioctl fs/ioctl.c:710 [inline] __x64_sys_ioctl+0x6f/0xb0 fs/ioctl.c:710 do_syscall_64+0xf9/0x620 arch/x86/entry/common.c:293 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x7fe8a8958ae9 Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 bc ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007fe8a5ece188 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 RAX: ffffffffffffffda RBX: 00007fe8a8a6bf60 RCX: 00007fe8a8958ae9 RDX: 0000000000000000 RSI: 000000000000ae41 RDI: 0000000000000004 RBP: 00007fe8a89b2f6d R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007ffdf3f4248f R14: 00007fe8a5ece300 R15: 0000000000022000 Sending NMI from CPU 1 to CPUs 0: NMI backtrace for cpu 0 CPU: 0 PID: 5814 Comm: kworker/u4:0 Not tainted 4.19.211-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Workqueue: bat_events batadv_nc_worker RIP: 0010:unwind_next_frame+0x35/0x1400 arch/x86/kernel/unwind_orc.c:397 Code: 57 41 56 49 89 fe 41 55 41 54 55 53 48 81 ec e8 00 00 00 48 c7 44 24 48 b3 8a b5 41 48 8d 5c 24 48 48 c7 44 24 50 a0 af b6 89 <48> c1 eb 03 48 c7 44 24 58 f0 80 29 81 48 8d 04 13 c7 00 f1 f1 f1 RSP: 0018:ffff8880ba006ae8 EFLAGS: 00000096 RAX: 0000000000000021 RBX: ffff8880ba006b30 RCX: 0000000000000022 RDX: dffffc0000000000 RSI: ffff8880ba006a78 RDI: ffff8880ba006c18 RBP: ffff8880ba006c98 R08: 0000000000000001 R09: 0000000000000001 R10: ffff8880ba006c77 R11: 0000000000074071 R12: ffff8880ba006ca8 R13: 0000000000000000 R14: ffff8880ba006c18 R15: ffff888045980c06 FS: 0000000000000000(0000) GS:ffff8880ba000000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f9a30bb7018 CR3: 000000009a154000 CR4: 00000000003426f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000006 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: __save_stack_trace+0x9f/0x190 arch/x86/kernel/stacktrace.c:44 save_stack mm/kasan/kasan.c:448 [inline] set_track mm/kasan/kasan.c:460 [inline] __kasan_slab_free+0x126/0x1f0 mm/kasan/kasan.c:521 __cache_free mm/slab.c:3503 [inline] kfree+0xcc/0x210 mm/slab.c:3822 nf_bridge_put include/linux/skbuff.h:3910 [inline] nf_bridge_info_free+0x90/0xb0 net/bridge/br_netfilter_hooks.c:136 br_nf_dev_queue_xmit+0x376/0x1970 net/bridge/br_netfilter_hooks.c:731 NF_HOOK include/linux/netfilter.h:289 [inline] br_nf_post_routing+0xa19/0x1110 net/bridge/br_netfilter_hooks.c:831 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_finish+0x25a/0x3d0 net/bridge/br_forward.c:69 br_nf_hook_thresh+0x2a3/0x330 net/bridge/br_netfilter_hooks.c:1014 br_nf_forward_finish+0x335/0x6d0 net/bridge/br_netfilter_hooks.c:553 NF_HOOK include/linux/netfilter.h:289 [inline] br_nf_forward_ip+0xaae/0x15e0 net/bridge/br_netfilter_hooks.c:620 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] br_flood+0x3c2/0x4d0 net/bridge/br_forward.c:238 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:arch_local_irq_restore arch/x86/include/asm/paravirt.h:789 [inline] RIP: 0010:lock_acquire+0x1ec/0x3c0 kernel/locking/lockdep.c:3911 Code: 08 00 00 00 00 00 00 48 c1 e8 03 80 3c 10 00 0f 85 b7 01 00 00 48 83 3d 09 2e a6 08 00 0f 84 2a 01 00 00 48 8b 7c 24 08 57 9d <0f> 1f 44 00 00 48 83 c4 18 5b 5d 41 5c 41 5d 41 5e 41 5f c3 65 8b RSP: 0018:ffff88808d187be8 EFLAGS: 00000286 ORIG_RAX: ffffffffffffff13 RAX: 1ffffffff13e3051 RBX: ffff88805356c040 RCX: eb1b63fbfa8dd4ec RDX: dffffc0000000000 RSI: 00000000cccd1a69 RDI: 0000000000000286 RBP: ffffffff89f85fa0 R08: 00000000d8106d53 R09: 0000000000000002 R10: ffff88805356c918 R11: 0000000000000000 R12: 0000000000000000 R13: 0000000000000000 R14: 0000000000000002 R15: 0000000000000000 rcu_lock_acquire include/linux/rcupdate.h:242 [inline] rcu_read_lock include/linux/rcupdate.h:627 [inline] batadv_nc_process_nc_paths.part.0+0xec/0x3d0 net/batman-adv/network-coding.c:698 batadv_nc_process_nc_paths net/batman-adv/network-coding.c:690 [inline] batadv_nc_worker+0x9bb/0xd50 net/batman-adv/network-coding.c:739 process_one_work+0x864/0x1570 kernel/workqueue.c:2153 worker_thread+0x64c/0x1130 kernel/workqueue.c:2296 kthread+0x33f/0x460 kernel/kthread.c:259 ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:415 ---------------- Code disassembly (best guess): 0: e8 11 dd 35 00 callq 0x35dd16 5: e9 ab fe ff ff jmpq 0xfffffeb5 a: 4c 89 ef mov %r13,%rdi d: e8 04 dd 35 00 callq 0x35dd16 12: e9 23 fe ff ff jmpq 0xfffffe3a 17: 90 nop 18: 90 nop 19: 90 nop 1a: 90 nop 1b: 90 nop 1c: 90 nop 1d: 90 nop 1e: 90 nop 1f: 90 nop 20: 90 nop 21: 90 nop 22: 90 nop 23: 90 nop 24: 90 nop 25: 90 nop 26: 48 8b 34 24 mov (%rsp),%rsi * 2a: 65 48 8b 04 25 c0 df mov %gs:0x1dfc0,%rax <-- trapping instruction 31: 01 00 33: 65 8b 15 cc 59 9f 7e mov %gs:0x7e9f59cc(%rip),%edx # 0x7e9f5a06 3a: 81 e2 00 01 1f 00 and $0x1f0100,%edx