syzbot


WARNING in skb_checksum_help

Status: upstream: reported C repro on 2023/06/08 17:53
Bug presence: origin:upstream
[Documentation on labels]
Reported-by: syzbot+e1db31216c789f552871@syzkaller.appspotmail.com
First crash: 376d, last: 5d15h
Bug presence (1)
Date Name Commit Repro Result
2023/06/08 upstream (ToT) 8d15d5e1851b C [report] WARNING in skb_checksum_help
Similar bugs (4)
Kernel Title Repro Cause bisect Fix bisect Count Last Reported Patched Status
linux-4.14 WARNING in skb_checksum_help 1 1272d 1272d 0/1 auto-closed as invalid on 2021/04/23 19:06
linux-5.15 WARNING in skb_checksum_help origin:upstream C 3168 5d17h 376d 0/3 upstream: reported C repro on 2023/06/08 17:54
upstream WARNING in skb_checksum_help (2) net C done 3816 181d 271d 25/27 fixed on 2023/12/21 03:45
upstream WARNING in skb_checksum_help net 15 486d 658d 22/27 fixed on 2023/02/24 13:50

Sample crash report:
netdevsim netdevsim0 netdevsim1: set [1, 0] type 2 family 0 port 6081 - 0
netdevsim netdevsim0 netdevsim2: set [1, 0] type 2 family 0 port 6081 - 0
netdevsim netdevsim0 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0
------------[ cut here ]------------
WARNING: CPU: 1 PID: 3539 at net/core/dev.c:3284 skb_checksum_help+0x3d0/0x5b0
Modules linked in:
CPU: 1 PID: 3539 Comm: syz-executor266 Not tainted 6.1.32-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/25/2023
RIP: 0010:skb_checksum_help+0x3d0/0x5b0 net/core/dev.c:3284
Code: 4c 89 ff e8 02 02 00 00 bb ea ff ff ff eb cf 0f 0b 80 3d c6 48 c4 05 01 0f 85 ac 01 00 00 e8 a7 f8 0e f9 bb ea ff ff ff eb b4 <0f> 0b 80 3d ac 48 c4 05 01 0f 85 9f 01 00 00 e8 8c f8 0e f9 bb ea
RSP: 0018:ffffc90003a2ef08 EFLAGS: 00010212
RAX: 0000000000000000 RBX: 0000000000000621 RCX: ffff88807c311dc0
RDX: ffff888022dfc074 RSI: 0000000000000519 RDI: 0000000000000621
RBP: 0000000000000519 R08: ffffffff887adbb5 R09: fffff52000745dd2
R10: 0000000000000000 R11: dffffc0000000001 R12: 1ffff110045bf810
R13: ffff888022dfc070 R14: dffffc0000000000 R15: ffff888022dfc000
FS:  000055555564f300(0000) GS:ffff8880b9900000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000020001000 CR3: 0000000071b22000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 ip_do_fragment+0x209/0x1b20 net/ipv4/ip_output.c:774
 ip_finish_output_gso net/ipv4/ip_output.c:279 [inline]
 __ip_finish_output+0x2bd/0x4b0 net/ipv4/ip_output.c:301
 iptunnel_xmit+0x50c/0x930 net/ipv4/ip_tunnel_core.c:82
 ip_tunnel_xmit+0x2296/0x2c70 net/ipv4/ip_tunnel.c:813
 __gre_xmit net/ipv4/ip_gre.c:469 [inline]
 ipgre_xmit+0x759/0xa60 net/ipv4/ip_gre.c:661
 __netdev_start_xmit include/linux/netdevice.h:4850 [inline]
 netdev_start_xmit include/linux/netdevice.h:4864 [inline]
 xmit_one net/core/dev.c:3595 [inline]
 dev_hard_start_xmit+0x261/0x8c0 net/core/dev.c:3611
 __dev_queue_xmit+0x1b97/0x3c90 net/core/dev.c:4261
 packet_snd net/packet/af_packet.c:3073 [inline]
 packet_sendmsg+0x4750/0x6170 net/packet/af_packet.c:3104
 sock_sendmsg_nosec net/socket.c:716 [inline]
 sock_sendmsg net/socket.c:736 [inline]
 ____sys_sendmsg+0x59e/0x8f0 net/socket.c:2482
 ___sys_sendmsg net/socket.c:2536 [inline]
 __sys_sendmsg+0x2a9/0x390 net/socket.c:2565
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x3d/0xb0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7fa271fbe569
Code: 28 c3 e8 4a 15 00 00 66 2e 0f 1f 84 00 00 00 00 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 c0 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007ffcd0d2a688 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
RAX: ffffffffffffffda RBX: 00007ffcd0d2a698 RCX: 00007fa271fbe569
RDX: 0000000000000000 RSI: 0000000020002ac0 RDI: 0000000000000003
RBP: 0000000000000003 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000004 R11: 0000000000000246 R12: 00007ffcd0d2a6a0
R13: 00007ffcd0d2a6c0 R14: 0000000000000000 R15: 0000000000000000
 </TASK>

Crashes (2417):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2023/06/08 18:17 linux-6.1.y 76ba310227d2 058b3a5a .config console log report syz C [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan WARNING in skb_checksum_help
2024/04/18 06:09 linux-6.1.y 6741e066ec76 acc528cb .config console log report syz C [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan-arm64 WARNING in skb_checksum_help
2024/03/28 12:55 linux-6.1.y e5cd595e23c1 120789fd .config console log report syz C [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan-arm64 WARNING in skb_checksum_help
2024/03/06 07:41 linux-6.1.y a3eb3a74aa8c f39a7eed .config console log report syz C [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan-arm64 WARNING in skb_checksum_help
2024/01/26 23:04 linux-6.1.y 883d1a956208 cc4a4020 .config console log report syz C [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan-arm64 WARNING in skb_checksum_help
2023/11/23 11:30 linux-6.1.y 69e434a1cb21 fc59b78e .config console log report syz C [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan-arm64 WARNING in skb_checksum_help
2023/08/14 12:26 linux-6.1.y 1321ab403b38 39990d51 .config console log report syz C [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan WARNING in skb_checksum_help
2023/08/14 11:56 linux-6.1.y 1321ab403b38 39990d51 .config console log report syz C [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan WARNING in skb_checksum_help
2023/08/14 11:27 linux-6.1.y 1321ab403b38 39990d51 .config console log report syz C [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan WARNING in skb_checksum_help
2023/08/14 10:33 linux-6.1.y 1321ab403b38 39990d51 .config console log report syz C [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan WARNING in skb_checksum_help
2023/06/08 20:10 linux-6.1.y 76ba310227d2 058b3a5a .config console log report syz C [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan-arm64 WARNING in skb_checksum_help
2023/06/08 19:46 linux-6.1.y 76ba310227d2 058b3a5a .config console log report syz C [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan-arm64 WARNING in skb_checksum_help
2023/06/08 19:22 linux-6.1.y 76ba310227d2 058b3a5a .config console log report syz C [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan-arm64 WARNING in skb_checksum_help
2023/06/08 18:57 linux-6.1.y 76ba310227d2 058b3a5a .config console log report syz C [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan-arm64 WARNING in skb_checksum_help
2023/06/08 18:33 linux-6.1.y 76ba310227d2 058b3a5a .config console log report syz C [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan-arm64 WARNING in skb_checksum_help
2024/06/13 13:34 linux-6.1.y ae9f2a70d69e 2aa5052f .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan WARNING in skb_checksum_help
2024/06/12 07:45 linux-6.1.y 88690811da69 4d75f4f7 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan WARNING in skb_checksum_help
2024/06/12 07:23 linux-6.1.y 88690811da69 4d75f4f7 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan WARNING in skb_checksum_help
2024/06/11 02:03 linux-6.1.y 88690811da69 048c640a .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan WARNING in skb_checksum_help
2024/06/10 08:33 linux-6.1.y 88690811da69 82c05ab8 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan WARNING in skb_checksum_help
2024/06/09 16:51 linux-6.1.y 88690811da69 82c05ab8 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan WARNING in skb_checksum_help
2024/06/09 16:35 linux-6.1.y 88690811da69 82c05ab8 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan WARNING in skb_checksum_help
2024/06/09 00:53 linux-6.1.y 88690811da69 82c05ab8 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan WARNING in skb_checksum_help
2024/06/08 09:06 linux-6.1.y 88690811da69 82c05ab8 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan WARNING in skb_checksum_help
2024/06/08 02:41 linux-6.1.y 88690811da69 82c05ab8 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan WARNING in skb_checksum_help
2024/06/06 14:31 linux-6.1.y 88690811da69 121701b6 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan WARNING in skb_checksum_help
2024/06/06 09:31 linux-6.1.y 88690811da69 121701b6 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan WARNING in skb_checksum_help
2024/06/04 23:19 linux-6.1.y 88690811da69 11f2afa5 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan WARNING in skb_checksum_help
2024/06/03 20:13 linux-6.1.y 88690811da69 0aba2352 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan WARNING in skb_checksum_help
2024/06/02 22:34 linux-6.1.y 88690811da69 3113787f .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan WARNING in skb_checksum_help
2024/06/02 04:12 linux-6.1.y 88690811da69 3113787f .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan WARNING in skb_checksum_help
2024/06/02 01:20 linux-6.1.y 88690811da69 3113787f .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan WARNING in skb_checksum_help
2024/06/01 17:16 linux-6.1.y 88690811da69 3113787f .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan WARNING in skb_checksum_help
2024/06/01 14:50 linux-6.1.y 88690811da69 3113787f .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan WARNING in skb_checksum_help
2024/06/01 14:50 linux-6.1.y 88690811da69 3113787f .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan WARNING in skb_checksum_help
2024/06/01 12:44 linux-6.1.y 88690811da69 3113787f .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan WARNING in skb_checksum_help
2024/06/01 08:38 linux-6.1.y 88690811da69 3113787f .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan WARNING in skb_checksum_help
2024/05/29 19:43 linux-6.1.y 88690811da69 34889ee3 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan WARNING in skb_checksum_help
2024/05/29 18:40 linux-6.1.y 88690811da69 34889ee3 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan WARNING in skb_checksum_help
2024/05/29 04:40 linux-6.1.y 88690811da69 34889ee3 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan WARNING in skb_checksum_help
2024/05/29 02:20 linux-6.1.y 88690811da69 34889ee3 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan WARNING in skb_checksum_help
2024/05/28 14:21 linux-6.1.y 88690811da69 f550015e .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan WARNING in skb_checksum_help
2024/05/28 12:28 linux-6.1.y 88690811da69 f550015e .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan WARNING in skb_checksum_help
2024/05/28 08:14 linux-6.1.y 88690811da69 f550015e .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan WARNING in skb_checksum_help
2024/05/27 04:21 linux-6.1.y 88690811da69 a10a183e .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan WARNING in skb_checksum_help
2024/05/26 11:44 linux-6.1.y 88690811da69 a10a183e .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan WARNING in skb_checksum_help
2024/05/26 07:42 linux-6.1.y 88690811da69 a10a183e .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan WARNING in skb_checksum_help
2024/06/13 10:35 linux-6.1.y ae9f2a70d69e 2aa5052f .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan-arm64 WARNING in skb_checksum_help
2024/06/12 17:35 linux-6.1.y ae9f2a70d69e f815599d .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan-arm64 WARNING in skb_checksum_help
2024/06/12 09:20 linux-6.1.y 88690811da69 4d75f4f7 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan-arm64 WARNING in skb_checksum_help
2024/06/11 14:11 linux-6.1.y 88690811da69 b7d9eb04 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan-arm64 WARNING in skb_checksum_help
2024/06/10 21:44 linux-6.1.y 88690811da69 048c640a .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan-arm64 WARNING in skb_checksum_help
2024/06/08 01:39 linux-6.1.y 88690811da69 82c05ab8 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan-arm64 WARNING in skb_checksum_help
2024/06/04 21:27 linux-6.1.y 88690811da69 11f2afa5 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan-arm64 WARNING in skb_checksum_help
2024/06/03 18:51 linux-6.1.y 88690811da69 0aba2352 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan-arm64 WARNING in skb_checksum_help
2024/06/02 19:09 linux-6.1.y 88690811da69 3113787f .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan-arm64 WARNING in skb_checksum_help
2024/06/02 18:24 linux-6.1.y 88690811da69 3113787f .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan-arm64 WARNING in skb_checksum_help
2024/06/02 08:50 linux-6.1.y 88690811da69 3113787f .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan-arm64 WARNING in skb_checksum_help
2024/06/01 11:08 linux-6.1.y 88690811da69 3113787f .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan-arm64 WARNING in skb_checksum_help
2024/05/29 22:55 linux-6.1.y 88690811da69 34889ee3 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan-arm64 WARNING in skb_checksum_help
2024/05/28 10:41 linux-6.1.y 88690811da69 f550015e .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan-arm64 WARNING in skb_checksum_help
2024/05/27 23:07 linux-6.1.y 88690811da69 761766e6 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan-arm64 WARNING in skb_checksum_help
2023/06/08 17:51 linux-6.1.y 76ba310227d2 058b3a5a .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan WARNING in skb_checksum_help
* Struck through repros no longer work on HEAD.