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:3a:24:3d:fe:f3:4a, vlan:0) bridge0: received packet on bridge_slave_0 with own address as source address (addr:aa:aa:aa:aa:aa:0c, vlan:0) watchdog: BUG: soft lockup - CPU#1 stuck for 22s! [syz-executor.3:27635] Modules linked in: irq event stamp: 3019973 hardirqs last enabled at (3019972): [] trace_hardirqs_on_thunk+0x1a/0x1c hardirqs last disabled at (3019973): [] trace_hardirqs_off_thunk+0x1a/0x1c softirqs last enabled at (2987352): [] __do_softirq+0x678/0x980 kernel/softirq.c:318 softirqs last disabled at (2987355): [] invoke_softirq kernel/softirq.c:372 [inline] softirqs last disabled at (2987355): [] irq_exit+0x215/0x260 kernel/softirq.c:412 CPU: 1 PID: 27635 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:orc_find arch/x86/kernel/unwind_orc.c:149 [inline] RIP: 0010:unwind_next_frame+0x24a/0x1400 arch/x86/kernel/unwind_orc.c:422 Code: 8d 43 ff 39 c6 0f 83 06 0e 00 00 48 b8 00 00 00 00 00 fc ff df 89 f2 48 8d 3c 95 bc 91 17 8c 48 89 f9 48 c1 e9 03 0f b6 0c 01 <48> 89 f8 83 e0 07 83 c0 03 38 c8 7c 27 84 c9 74 23 48 89 54 24 30 RSP: 0018:ffff8880ba1073f0 EFLAGS: 00000a06 ORIG_RAX: ffffffffffffff13 RAX: dffffc0000000000 RBX: 1ffff11017420e87 RCX: 0000000000000000 RDX: 0000000000008d0d RSI: 0000000000008d0d RDI: ffffffff8c19c5f0 RBP: 0000000000000001 R08: 0000000000000001 R09: 0000000000000001 R10: ffff8880ba10757f R11: 0000000000074071 R12: ffff8880ba107568 R13: ffff8880ba107555 R14: ffff8880ba107520 R15: ffffffff818d0db1 FS: 00007fd002d6d700(0000) GS:ffff8880ba100000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000000000000 CR3: 0000000053185000 CR4: 00000000003406e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 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_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] br_nf_pre_routing_ipv6+0x152/0x860 net/bridge/br_netfilter_ipv6.c:229 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:clear_page_erms+0x7/0x10 arch/x86/lib/clear_page_64.S:48 Code: 48 89 47 18 48 89 47 20 48 89 47 28 48 89 47 30 48 89 47 38 48 8d 7f 40 75 d9 90 c3 0f 1f 80 00 00 00 00 b9 00 10 00 00 31 c0 aa c3 90 90 90 90 90 90 41 57 41 56 41 55 41 54 55 53 48 89 fb RSP: 0018:ffff88804c34f0d8 EFLAGS: 00010246 ORIG_RAX: ffffffffffffff13 RAX: 0000000000000000 RBX: ffff888000000000 RCX: 0000000000000f00 RDX: 1ffff110160bcecf RSI: ffffffff818aeed1 RDI: ffff88802c8ce100 RBP: ffff8880b05e62c0 R08: ffffffffffffffe8 R09: 0000000000000000 R10: 0000000000000004 R11: 00000000f1c5d7ed R12: 0000000000000000 R13: 0000000000000000 R14: 0000000000000000 R15: ffff88804c34f298 clear_page arch/x86/include/asm/page_64.h:49 [inline] clear_user_page arch/x86/include/asm/page.h:28 [inline] clear_user_highpage include/linux/highmem.h:137 [inline] clear_subpage.constprop.0+0x7d/0x100 mm/memory.c:4849 process_huge_page mm/memory.c:4803 [inline] clear_huge_page+0xa2/0x460 mm/memory.c:4863 __do_huge_pmd_anonymous_page mm/huge_memory.c:583 [inline] do_huge_pmd_anonymous_page+0xbb5/0x1e60 mm/huge_memory.c:740 create_huge_pmd mm/memory.c:4066 [inline] __handle_mm_fault+0x289c/0x41c0 mm/memory.c:4270 handle_mm_fault+0x436/0xb10 mm/memory.c:4336 faultin_page mm/gup.c:539 [inline] __get_user_pages+0x6f0/0x1710 mm/gup.c:745 __get_user_pages_locked mm/gup.c:916 [inline] get_user_pages_unlocked+0x256/0x400 mm/gup.c:1039 get_user_pages_fast+0x2a0/0x350 mm/gup.c:1923 iov_iter_get_pages+0x25b/0xe80 lib/iov_iter.c:1211 __bio_iov_iter_get_pages block/bio.c:849 [inline] bio_iov_iter_get_pages+0x174/0x5d0 block/bio.c:896 __blkdev_direct_IO fs/block_dev.c:377 [inline] blkdev_direct_IO+0x830/0xf60 fs/block_dev.c:448 generic_file_read_iter+0x28b/0x2b60 mm/filemap.c:2364 blkdev_read_iter+0x127/0x1c0 fs/block_dev.c:1971 call_read_iter include/linux/fs.h:1815 [inline] aio_read+0x2d4/0x420 fs/aio.c:1534 __io_submit_one fs/aio.c:1855 [inline] io_submit_one+0xeef/0x20c0 fs/aio.c:1909 __do_sys_io_submit fs/aio.c:1953 [inline] __se_sys_io_submit+0x11b/0x4a0 fs/aio.c:1924 do_syscall_64+0xf9/0x620 arch/x86/entry/common.c:293 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x7fd0057f7ae9 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:00007fd002d6d188 EFLAGS: 00000246 ORIG_RAX: 00000000000000d1 RAX: ffffffffffffffda RBX: 00007fd00590af60 RCX: 00007fd0057f7ae9 RDX: 00000000200000c0 RSI: 0000000000000008 RDI: 00007fd0058ee000 RBP: 00007fd005851f6d R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007ffee7b0cc6f R14: 00007fd002d6d300 R15: 0000000000022000 Sending NMI from CPU 1 to CPUs 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 01/01/2011 RIP: 0010:unwind_next_frame+0x425/0x1400 arch/x86/kernel/unwind_orc.c:427 Code: f9 4c 89 c7 e8 3c f2 ff ff 48 85 c0 49 89 c7 74 6a 4d 8d 47 04 48 b8 00 00 00 00 00 fc ff df 4c 89 c2 48 c1 ea 03 0f b6 04 02 <4c> 89 c2 83 e2 07 38 d0 7f 08 84 c0 0f 85 23 0c 00 00 41 0f b6 47 RSP: 0018:ffff8880b5a5e518 EFLAGS: 00000803 RAX: 0000000000000000 RBX: 1ffff11016b4bcac RCX: ffffffff8122efe1 RDX: 1ffffffff171fac8 RSI: ffffffff8b8fd628 RDI: ffffffff8b325124 RBP: 0000000000000001 R08: ffffffff8b8fd644 R09: ffffffff8b8fd628 R10: ffff8880b5a5e75f R11: 0000000000074071 R12: ffff8880b5a5e748 R13: ffff8880b5a5e735 R14: ffff8880b5a5e700 R15: ffffffff8b8fd640 FS: 0000000000000000(0000) GS:ffff8880ba000000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007ff8bc8e5000 CR3: 000000009c496000 CR4: 00000000003406f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: __unwind_start+0x5b8/0x960 arch/x86/kernel/unwind_orc.c:667 unwind_start arch/x86/include/asm/unwind.h:60 [inline] __save_stack_trace+0x72/0x190 arch/x86/kernel/stacktrace.c:43 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] kmem_cache_free+0x7f/0x260 mm/slab.c:3765 kfree_skbmem+0xc1/0x140 net/core/skbuff.c:595 __kfree_skb net/core/skbuff.c:655 [inline] consume_skb+0x120/0x3d0 net/core/skbuff.c:714 packet_rcv+0xea/0x1490 net/packet/af_packet.c:2148 dev_queue_xmit_nit+0x756/0xa20 net/core/dev.c:2050 xmit_one net/core/dev.c:3252 [inline] dev_hard_start_xmit+0xaa/0x920 net/core/dev.c:3272 __dev_queue_xmit+0x269d/0x2e00 net/core/dev.c:3838 br_dev_queue_push_xmit+0x25a/0x6c0 net/bridge/br_forward.c:56 br_nf_dev_queue_xmit+0x387/0x1970 net/bridge/br_netfilter_hooks.c:732 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 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 ---------------- Code disassembly (best guess): 0: 8d 43 ff lea -0x1(%rbx),%eax 3: 39 c6 cmp %eax,%esi 5: 0f 83 06 0e 00 00 jae 0xe11 b: 48 b8 00 00 00 00 00 movabs $0xdffffc0000000000,%rax 12: fc ff df 15: 89 f2 mov %esi,%edx 17: 48 8d 3c 95 bc 91 17 lea -0x73e86e44(,%rdx,4),%rdi 1e: 8c 1f: 48 89 f9 mov %rdi,%rcx 22: 48 c1 e9 03 shr $0x3,%rcx 26: 0f b6 0c 01 movzbl (%rcx,%rax,1),%ecx * 2a: 48 89 f8 mov %rdi,%rax <-- trapping instruction 2d: 83 e0 07 and $0x7,%eax 30: 83 c0 03 add $0x3,%eax 33: 38 c8 cmp %cl,%al 35: 7c 27 jl 0x5e 37: 84 c9 test %cl,%cl 39: 74 23 je 0x5e 3b: 48 89 54 24 30 mov %rdx,0x30(%rsp)