bridge0: received packet on syz_tun with own address as source address (addr:aa:aa:aa:aa:aa:aa, vlan:0) list_del corruption. prev->next should be ffff8880a737b400, but was ffff88806e934820 ------------[ cut here ]------------ kernel BUG at lib/list_debug.c:51! invalid opcode: 0000 [#1] PREEMPT SMP KASAN CPU: 0 PID: 17655 Comm: syz-executor.5 Not tainted 5.4.0-rc1+ #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:__list_del_entry_valid.cold+0xf/0x4f lib/list_debug.c:51 Code: e8 59 04 18 fe 0f 0b 48 89 f1 48 c7 c7 c0 9a e6 87 4c 89 e6 e8 45 04 18 fe 0f 0b 4c 89 f6 48 c7 c7 60 9c e6 87 e8 34 04 18 fe <0f> 0b 4c 89 ea 4c 89 f6 48 c7 c7 a0 9b e6 87 e8 20 04 18 fe 0f 0b RSP: 0018:ffff888065fe75e8 EFLAGS: 00010282 RAX: 0000000000000054 RBX: ffff88806e934820 RCX: 0000000000000000 RDX: 0000000000000000 RSI: ffffffff815cb5f6 RDI: ffffed100cbfceaf RBP: ffff888065fe7600 R08: 0000000000000054 R09: ffffed1015d06159 R10: ffffed1015d06158 R11: ffff8880ae830ac7 R12: ffff88806e934820 R13: 0000000000000000 R14: ffff8880a737b400 R15: ffff8880a737b400 FS: 00007f20a70be700(0000) GS:ffff8880ae800000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000000738008 CR3: 000000009f19c000 CR4: 00000000001406f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: __list_del_entry include/linux/list.h:131 [inline] skb_list_del_init include/linux/skbuff.h:1482 [inline] __netif_receive_skb_list_core+0x2de/0x9d0 net/core/dev.c:5085 __netif_receive_skb_list net/core/dev.c:5153 [inline] netif_receive_skb_list_internal+0x7eb/0xe60 net/core/dev.c:5248 gro_normal_list.part.0+0x1e/0xb0 net/core/dev.c:5761 gro_normal_list net/core/dev.c:5759 [inline] gro_normal_one net/core/dev.c:5773 [inline] napi_frags_finish net/core/dev.c:5786 [inline] napi_gro_frags+0xa6a/0xea0 net/core/dev.c:5859 tun_get_user+0x2e98/0x3fa0 drivers/net/tun.c:1976 tun_chr_write_iter+0xbd/0x156 drivers/net/tun.c:2022 call_write_iter include/linux/fs.h:1895 [inline] do_iter_readv_writev+0x5f8/0x8f0 fs/read_write.c:693 do_iter_write fs/read_write.c:970 [inline] do_iter_write+0x184/0x610 fs/read_write.c:951 vfs_writev+0x1b3/0x2f0 fs/read_write.c:1015 do_writev+0x15b/0x330 fs/read_write.c:1058 __do_sys_writev fs/read_write.c:1131 [inline] __se_sys_writev fs/read_write.c:1128 [inline] __x64_sys_writev+0x75/0xb0 fs/read_write.c:1128 do_syscall_64+0xfa/0x760 arch/x86/entry/common.c:290 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x459911 Code: 75 14 b8 14 00 00 00 0f 05 48 3d 01 f0 ff ff 0f 83 34 b9 fb ff c3 48 83 ec 08 e8 fa 2c 00 00 48 89 04 24 b8 14 00 00 00 0f 05 <48> 8b 3c 24 48 89 c2 e8 43 2d 00 00 48 89 d0 48 83 c4 08 48 3d 01 RSP: 002b:00007f20a70bdba0 EFLAGS: 00000293 ORIG_RAX: 0000000000000014 RAX: ffffffffffffffda RBX: 0000000000000083 RCX: 0000000000459911 RDX: 0000000000000001 RSI: 00007f20a70bdc00 RDI: 00000000000000f0 RBP: 000000000075bfc8 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000293 R12: 00007f20a70be6d4 R13: 00000000004c8c07 R14: 00000000004dffa8 R15: 00000000ffffffff Modules linked in: ---[ end trace 04212a7a4d98c4bb ]--- RIP: 0010:__list_del_entry_valid.cold+0xf/0x4f lib/list_debug.c:51 Code: e8 59 04 18 fe 0f 0b 48 89 f1 48 c7 c7 c0 9a e6 87 4c 89 e6 e8 45 04 18 fe 0f 0b 4c 89 f6 48 c7 c7 60 9c e6 87 e8 34 04 18 fe <0f> 0b 4c 89 ea 4c 89 f6 48 c7 c7 a0 9b e6 87 e8 20 04 18 fe 0f 0b RSP: 0018:ffff888065fe75e8 EFLAGS: 00010282 RAX: 0000000000000054 RBX: ffff88806e934820 RCX: 0000000000000000 RDX: 0000000000000000 RSI: ffffffff815cb5f6 RDI: ffffed100cbfceaf RBP: ffff888065fe7600 R08: 0000000000000054 R09: ffffed1015d06159 R10: ffffed1015d06158 R11: ffff8880ae830ac7 R12: ffff88806e934820 R13: 0000000000000000 R14: ffff8880a737b400 R15: ffff8880a737b400 FS: 00007f20a70be700(0000) GS:ffff8880ae800000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000000738008 CR3: 000000009f19c000 CR4: 00000000001406f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400