* [moderation/CI] Re: fixes two virtio-net related bugs.
@ 2025-09-25 6:22 syzbot ci
2025-09-25 7:11 ` Aleksandr Nogikh
0 siblings, 1 reply; 4+ messages in thread
From: syzbot ci @ 2025-09-25 6:22 UTC (permalink / raw)
To: syzkaller-upstream-moderation; +Cc: syzbot
syzbot ci has tested the following series
[v1] fixes two virtio-net related bugs.
https://lore.kernel.org/all/20250925022537.91774-1-xuanzhuo@linux.alibaba.com
* [PATCH net 1/2] virtio-net: fix incorrect flags recording in big mode
* [PATCH net 2/2] virtio-net: correct hdr_len handling for VIRTIO_NET_F_GUEST_HDRLEN
and found the following issue:
WARNING in virtio_net_hdr_from_skb
Full report is available here:
https://ci.syzbot.org/series/41a78b3d-b982-4507-b02f-1991c8d827c9
***
WARNING in virtio_net_hdr_from_skb
tree: net
URL: https://kernel.googlesource.com/pub/scm/linux/kernel/git/netdev/net.git
base: f8b4687151021db61841af983f1cb7be6915d4ef
arch: amd64
compiler: Debian clang version 20.1.8 (++20250708063551+0c9f909b7976-1~exp1~20250708183702.136), Debian LLD 20.1.8
config: https://ci.syzbot.org/builds/bb3f28da-9370-44d7-be20-9c443d5ebfc9/config
C repro: https://ci.syzbot.org/findings/7af48589-24a5-4e09-bfe0-1969f5d98f4d/c_repro
syz repro: https://ci.syzbot.org/findings/7af48589-24a5-4e09-bfe0-1969f5d98f4d/syz_repro
syz.0.17 uses obsolete (PF_INET,SOCK_PACKET)
------------[ cut here ]------------
WARNING: CPU: 0 PID: 6010 at ./include/linux/skbuff.h:3024 skb_transport_header include/linux/skbuff.h:3024 [inline]
WARNING: CPU: 0 PID: 6010 at ./include/linux/skbuff.h:3024 skb_transport_offset include/linux/skbuff.h:3175 [inline]
WARNING: CPU: 0 PID: 6010 at ./include/linux/skbuff.h:3024 virtio_net_hdr_from_skb+0x669/0xa30 include/linux/virtio_net.h:222
Modules linked in:
CPU: 0 UID: 0 PID: 6010 Comm: syz.0.17 Not tainted syzkaller #0 PREEMPT(full)
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.2-debian-1.16.2-1 04/01/2014
RIP: 0010:skb_transport_header include/linux/skbuff.h:3024 [inline]
RIP: 0010:skb_transport_offset include/linux/skbuff.h:3175 [inline]
RIP: 0010:virtio_net_hdr_from_skb+0x669/0xa30 include/linux/virtio_net.h:222
Code: 00 00 00 fc ff df 0f b6 04 10 84 c0 0f 85 b0 03 00 00 41 c6 45 00 05 48 8b 74 24 08 83 c6 08 e9 ca fd ff ff e8 c8 1c 72 f7 90 <0f> 0b 90 e9 a7 fa ff ff e8 ba 1c 72 f7 90 0f 0b 90 e9 62 fc ff ff
RSP: 0018:ffffc90002def490 EFLAGS: 00010293
RAX: ffffffff8a4da238 RBX: 1ffff11004dafca6 RCX: ffff888023c9b980
RDX: 0000000000000000 RSI: 000000000000ffff RDI: 000000000000ffff
RBP: 1ffff1100537cbd8 R08: ffff88804138e059 R09: 0000000000000000
R10: ffff88804138e050 R11: ffffed1008271c0c R12: ffff888029be4000
R13: ffff888026d7e536 R14: ffff888029be5ec4 R15: 000000000000ffff
FS: 0000555557e59500(0000) GS:ffff8880b8615000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000200000003000 CR3: 00000000414a0000 CR4: 00000000000006f0
Call Trace:
<TASK>
tpacket_rcv+0x15c8/0x3290 net/packet/af_packet.c:2416
__netif_receive_skb_one_core net/core/dev.c:5991 [inline]
__netif_receive_skb+0x164/0x380 net/core/dev.c:6104
netif_receive_skb_internal net/core/dev.c:6190 [inline]
netif_receive_skb+0x1cb/0x790 net/core/dev.c:6249
tun_rx_batched+0x1b9/0x730 drivers/net/tun.c:1485
tun_get_user+0x2aa2/0x3e20 drivers/net/tun.c:1950
tun_chr_write_iter+0x113/0x200 drivers/net/tun.c:1996
new_sync_write fs/read_write.c:593 [inline]
vfs_write+0x5c9/0xb30 fs/read_write.c:686
ksys_write+0x145/0x250 fs/read_write.c:738
do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
do_syscall_64+0xfa/0x3b0 arch/x86/entry/syscall_64.c:94
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fe74f78ec29
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 a8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007fffd7d9aa28 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 00007fe74f9d5fa0 RCX: 00007fe74f78ec29
RDX: 0000000000000fb5 RSI: 0000200000002780 RDI: 0000000000000004
RBP: 00007fe74f811e41 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fe74f9d5fa0 R14: 00007fe74f9d5fa0 R15: 0000000000000003
</TASK>
***
If these findings have caused you to resend the series or submit a
separate fix, please add the following tag to your commit message:
Tested-by: syzbot@syzkaller.appspotmail.com
---
This report is generated by a bot. It may contain errors.
syzbot ci engineers can be reached at syzkaller@googlegroups.com.
The email will later be sent to:
[alvaro.karsz@solid-run.com andrew@lunn.ch davem@davemloft.net edumazet@google.com eperezma@redhat.com hengqi@linux.alibaba.com jasowang@redhat.com jiri@resnulli.us kuba@kernel.org mst@redhat.com netdev@vger.kernel.org pabeni@redhat.com virtualization@lists.linux.dev willemb@google.com xuanzhuo@linux.alibaba.com]
If the report looks fine to you, reply with:
#syz upstream
^ permalink raw reply [flat|nested] 4+ messages in thread
* Re: [moderation/CI] Re: fixes two virtio-net related bugs.
2025-09-25 6:22 [moderation/CI] Re: fixes two virtio-net related bugs syzbot ci
@ 2025-09-25 7:11 ` Aleksandr Nogikh
0 siblings, 0 replies; 4+ messages in thread
From: Aleksandr Nogikh @ 2025-09-25 7:11 UTC (permalink / raw)
To: syzbot ci; +Cc: syzkaller-upstream-moderation, syzbot
#syz upstream
On Thu, Sep 25, 2025 at 8:22 AM syzbot ci
<syzbot+ciaaef565a46ab8569@syzkaller.appspotmail.com> wrote:
>
> syzbot ci has tested the following series
>
> [v1] fixes two virtio-net related bugs.
> https://lore.kernel.org/all/20250925022537.91774-1-xuanzhuo@linux.alibaba.com
> * [PATCH net 1/2] virtio-net: fix incorrect flags recording in big mode
> * [PATCH net 2/2] virtio-net: correct hdr_len handling for VIRTIO_NET_F_GUEST_HDRLEN
>
> and found the following issue:
> WARNING in virtio_net_hdr_from_skb
>
> Full report is available here:
> https://ci.syzbot.org/series/41a78b3d-b982-4507-b02f-1991c8d827c9
>
> ***
>
> WARNING in virtio_net_hdr_from_skb
>
> tree: net
> URL: https://kernel.googlesource.com/pub/scm/linux/kernel/git/netdev/net.git
> base: f8b4687151021db61841af983f1cb7be6915d4ef
> arch: amd64
> compiler: Debian clang version 20.1.8 (++20250708063551+0c9f909b7976-1~exp1~20250708183702.136), Debian LLD 20.1.8
> config: https://ci.syzbot.org/builds/bb3f28da-9370-44d7-be20-9c443d5ebfc9/config
> C repro: https://ci.syzbot.org/findings/7af48589-24a5-4e09-bfe0-1969f5d98f4d/c_repro
> syz repro: https://ci.syzbot.org/findings/7af48589-24a5-4e09-bfe0-1969f5d98f4d/syz_repro
>
> syz.0.17 uses obsolete (PF_INET,SOCK_PACKET)
> ------------[ cut here ]------------
> WARNING: CPU: 0 PID: 6010 at ./include/linux/skbuff.h:3024 skb_transport_header include/linux/skbuff.h:3024 [inline]
> WARNING: CPU: 0 PID: 6010 at ./include/linux/skbuff.h:3024 skb_transport_offset include/linux/skbuff.h:3175 [inline]
> WARNING: CPU: 0 PID: 6010 at ./include/linux/skbuff.h:3024 virtio_net_hdr_from_skb+0x669/0xa30 include/linux/virtio_net.h:222
> Modules linked in:
> CPU: 0 UID: 0 PID: 6010 Comm: syz.0.17 Not tainted syzkaller #0 PREEMPT(full)
> Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.2-debian-1.16.2-1 04/01/2014
> RIP: 0010:skb_transport_header include/linux/skbuff.h:3024 [inline]
> RIP: 0010:skb_transport_offset include/linux/skbuff.h:3175 [inline]
> RIP: 0010:virtio_net_hdr_from_skb+0x669/0xa30 include/linux/virtio_net.h:222
> Code: 00 00 00 fc ff df 0f b6 04 10 84 c0 0f 85 b0 03 00 00 41 c6 45 00 05 48 8b 74 24 08 83 c6 08 e9 ca fd ff ff e8 c8 1c 72 f7 90 <0f> 0b 90 e9 a7 fa ff ff e8 ba 1c 72 f7 90 0f 0b 90 e9 62 fc ff ff
> RSP: 0018:ffffc90002def490 EFLAGS: 00010293
> RAX: ffffffff8a4da238 RBX: 1ffff11004dafca6 RCX: ffff888023c9b980
> RDX: 0000000000000000 RSI: 000000000000ffff RDI: 000000000000ffff
> RBP: 1ffff1100537cbd8 R08: ffff88804138e059 R09: 0000000000000000
> R10: ffff88804138e050 R11: ffffed1008271c0c R12: ffff888029be4000
> R13: ffff888026d7e536 R14: ffff888029be5ec4 R15: 000000000000ffff
> FS: 0000555557e59500(0000) GS:ffff8880b8615000(0000) knlGS:0000000000000000
> CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
> CR2: 0000200000003000 CR3: 00000000414a0000 CR4: 00000000000006f0
> Call Trace:
> <TASK>
> tpacket_rcv+0x15c8/0x3290 net/packet/af_packet.c:2416
> __netif_receive_skb_one_core net/core/dev.c:5991 [inline]
> __netif_receive_skb+0x164/0x380 net/core/dev.c:6104
> netif_receive_skb_internal net/core/dev.c:6190 [inline]
> netif_receive_skb+0x1cb/0x790 net/core/dev.c:6249
> tun_rx_batched+0x1b9/0x730 drivers/net/tun.c:1485
> tun_get_user+0x2aa2/0x3e20 drivers/net/tun.c:1950
> tun_chr_write_iter+0x113/0x200 drivers/net/tun.c:1996
> new_sync_write fs/read_write.c:593 [inline]
> vfs_write+0x5c9/0xb30 fs/read_write.c:686
> ksys_write+0x145/0x250 fs/read_write.c:738
> do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
> do_syscall_64+0xfa/0x3b0 arch/x86/entry/syscall_64.c:94
> entry_SYSCALL_64_after_hwframe+0x77/0x7f
> RIP: 0033:0x7fe74f78ec29
> 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 a8 ff ff ff f7 d8 64 89 01 48
> RSP: 002b:00007fffd7d9aa28 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
> RAX: ffffffffffffffda RBX: 00007fe74f9d5fa0 RCX: 00007fe74f78ec29
> RDX: 0000000000000fb5 RSI: 0000200000002780 RDI: 0000000000000004
> RBP: 00007fe74f811e41 R08: 0000000000000000 R09: 0000000000000000
> R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
> R13: 00007fe74f9d5fa0 R14: 00007fe74f9d5fa0 R15: 0000000000000003
> </TASK>
>
>
> ***
>
> If these findings have caused you to resend the series or submit a
> separate fix, please add the following tag to your commit message:
> Tested-by: syzbot@syzkaller.appspotmail.com
>
> ---
> This report is generated by a bot. It may contain errors.
> syzbot ci engineers can be reached at syzkaller@googlegroups.com.
>
> The email will later be sent to:
> [alvaro.karsz@solid-run.com andrew@lunn.ch davem@davemloft.net edumazet@google.com eperezma@redhat.com hengqi@linux.alibaba.com jasowang@redhat.com jiri@resnulli.us kuba@kernel.org mst@redhat.com netdev@vger.kernel.org pabeni@redhat.com virtualization@lists.linux.dev willemb@google.com xuanzhuo@linux.alibaba.com]
>
> If the report looks fine to you, reply with:
> #syz upstream
>
> --
> You received this message because you are subscribed to the Google Groups "syzkaller-upstream-moderation" group.
> To unsubscribe from this group and stop receiving emails from it, send an email to syzkaller-upstream-moderation+unsubscribe@googlegroups.com.
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^ permalink raw reply [flat|nested] 4+ messages in thread
* [moderation/CI] Re: fixes two virtio-net related bugs.
@ 2025-10-11 13:34 syzbot ci
2025-10-11 14:10 ` Aleksandr Nogikh
0 siblings, 1 reply; 4+ messages in thread
From: syzbot ci @ 2025-10-11 13:34 UTC (permalink / raw)
To: syzkaller-upstream-moderation; +Cc: syzbot
syzbot ci has tested the following series
[v1] fixes two virtio-net related bugs.
https://lore.kernel.org/all/20251011094107.16439-1-xuanzhuo@linux.alibaba.com
* [PATCH net v1 1/3] virtio-net: fix incorrect flags recording in big mode
* [PATCH net v1 2/3] virtio-net: correct hdr_len handling for VIRTIO_NET_F_GUEST_HDRLEN
* [PATCH net v1 3/3] virtio-net: correct hdr_len handling for tunnel gso
and found the following issue:
WARNING in virtio_net_hdr_from_skb
Full report is available here:
https://ci.syzbot.org/series/694015b3-a5d7-400b-a7c2-c9ee69c35027
***
WARNING in virtio_net_hdr_from_skb
tree: net
URL: https://kernel.googlesource.com/pub/scm/linux/kernel/git/netdev/net.git
base: 2c95a756e0cfc19af6d0b32b0c6cf3bada334998
arch: amd64
compiler: Debian clang version 20.1.8 (++20250708063551+0c9f909b7976-1~exp1~20250708183702.136), Debian LLD 20.1.8
config: https://ci.syzbot.org/builds/5e67ae6c-bfc6-42cc-ab94-ff0cde528221/config
C repro: https://ci.syzbot.org/findings/39fb9135-9abf-418b-82a0-6478c7642a48/c_repro
syz repro: https://ci.syzbot.org/findings/39fb9135-9abf-418b-82a0-6478c7642a48/syz_repro
syz.0.17 uses obsolete (PF_INET,SOCK_PACKET)
------------[ cut here ]------------
WARNING: CPU: 1 PID: 5956 at ./include/linux/skbuff.h:3071 skb_transport_header include/linux/skbuff.h:3071 [inline]
WARNING: CPU: 1 PID: 5956 at ./include/linux/skbuff.h:3071 tcp_hdr include/linux/tcp.h:26 [inline]
WARNING: CPU: 1 PID: 5956 at ./include/linux/skbuff.h:3071 tcp_hdrlen include/linux/tcp.h:36 [inline]
WARNING: CPU: 1 PID: 5956 at ./include/linux/skbuff.h:3071 virtio_net_hdr_from_skb+0x5e6/0x8d0 include/linux/virtio_net.h:226
Modules linked in:
CPU: 1 UID: 0 PID: 5956 Comm: syz.0.17 Not tainted syzkaller #0 PREEMPT(full)
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.2-debian-1.16.2-1 04/01/2014
RIP: 0010:skb_transport_header include/linux/skbuff.h:3071 [inline]
RIP: 0010:tcp_hdr include/linux/tcp.h:26 [inline]
RIP: 0010:tcp_hdrlen include/linux/tcp.h:36 [inline]
RIP: 0010:virtio_net_hdr_from_skb+0x5e6/0x8d0 include/linux/virtio_net.h:226
Code: 6f 01 4c 89 e8 48 c1 e8 03 0f b6 04 28 84 c0 0f 85 d8 02 00 00 41 c6 45 00 05 66 41 bf 08 00 e9 2c fd ff ff e8 2b 33 a8 f7 90 <0f> 0b 90 e9 f4 fb ff ff e8 1d 33 a8 f7 90 0f 0b 90 e9 b7 fc ff ff
RSP: 0018:ffffc90003777228 EFLAGS: 00010293
RAX: ffffffff8a16e845 RBX: ffff8881763f4fd0 RCX: ffff888106388000
RDX: 0000000000000000 RSI: 000000000000ffff RDI: 000000000000ffff
RBP: 000000000000ffff R08: ffff88817517f059 R09: 0000000000000000
R10: ffff88817517f050 R11: ffffed102ea2fe0c R12: ffff88816a55a498
R13: ffff8881763f4fb6 R14: ffff8881763f4f00 R15: 1ffff1102ec7e9f6
FS: 0000555585886500(0000) GS:ffff8882a9d3b000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000200000010000 CR3: 00000001128ba000 CR4: 00000000000006f0
Call Trace:
<TASK>
tpacket_rcv+0x1527/0x31c0 net/packet/af_packet.c:2362
deliver_skb net/core/dev.c:2472 [inline]
deliver_ptype_list_skb net/core/dev.c:2487 [inline]
__netif_receive_skb_core+0x3465/0x4380 net/core/dev.c:6023
__netif_receive_skb_one_core net/core/dev.c:6077 [inline]
__netif_receive_skb+0x72/0x380 net/core/dev.c:6192
netif_receive_skb_internal net/core/dev.c:6278 [inline]
netif_receive_skb+0x1cb/0x790 net/core/dev.c:6337
tun_rx_batched+0x1b9/0x730 drivers/net/tun.c:1485
tun_get_user+0x2b65/0x3e90 drivers/net/tun.c:1953
tun_chr_write_iter+0x113/0x200 drivers/net/tun.c:1999
new_sync_write fs/read_write.c:593 [inline]
vfs_write+0x5c9/0xb30 fs/read_write.c:686
ksys_write+0x145/0x250 fs/read_write.c:738
do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
do_syscall_64+0xfa/0xfa0 arch/x86/entry/syscall_64.c:94
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fd130b8eec9
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 a8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007ffcdba8f558 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 00007fd130de5fa0 RCX: 00007fd130b8eec9
RDX: 000000000000fdef RSI: 00002000000002c0 RDI: 0000000000000003
RBP: 00007fd130c11f91 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fd130de5fa0 R14: 00007fd130de5fa0 R15: 0000000000000003
</TASK>
***
If these findings have caused you to resend the series or submit a
separate fix, please add the following tag to your commit message:
Tested-by: syzbot@syzkaller.appspotmail.com
---
This report is generated by a bot. It may contain errors.
syzbot ci engineers can be reached at syzkaller@googlegroups.com.
The email will later be sent to:
[alvaro.karsz@solid-run.com andrew@lunn.ch davem@davemloft.net edumazet@google.com eperezma@redhat.com hengqi@linux.alibaba.com jasowang@redhat.com jiri@resnulli.us kuba@kernel.org mst@redhat.com netdev@vger.kernel.org pabeni@redhat.com virtualization@lists.linux.dev willemb@google.com xuanzhuo@linux.alibaba.com]
If the report looks fine to you, reply with:
#syz upstream
^ permalink raw reply [flat|nested] 4+ messages in thread
* Re: [moderation/CI] Re: fixes two virtio-net related bugs.
2025-10-11 13:34 syzbot ci
@ 2025-10-11 14:10 ` Aleksandr Nogikh
0 siblings, 0 replies; 4+ messages in thread
From: Aleksandr Nogikh @ 2025-10-11 14:10 UTC (permalink / raw)
To: syzbot ci; +Cc: syzkaller-upstream-moderation, syzbot
#syz upstream
On Sat, Oct 11, 2025 at 3:34 PM syzbot ci
<syzbot+ci26f4fb10a5e60441@syzkaller.appspotmail.com> wrote:
>
> syzbot ci has tested the following series
>
> [v1] fixes two virtio-net related bugs.
> https://lore.kernel.org/all/20251011094107.16439-1-xuanzhuo@linux.alibaba.com
> * [PATCH net v1 1/3] virtio-net: fix incorrect flags recording in big mode
> * [PATCH net v1 2/3] virtio-net: correct hdr_len handling for VIRTIO_NET_F_GUEST_HDRLEN
> * [PATCH net v1 3/3] virtio-net: correct hdr_len handling for tunnel gso
>
> and found the following issue:
> WARNING in virtio_net_hdr_from_skb
>
> Full report is available here:
> https://ci.syzbot.org/series/694015b3-a5d7-400b-a7c2-c9ee69c35027
>
> ***
>
> WARNING in virtio_net_hdr_from_skb
>
> tree: net
> URL: https://kernel.googlesource.com/pub/scm/linux/kernel/git/netdev/net.git
> base: 2c95a756e0cfc19af6d0b32b0c6cf3bada334998
> arch: amd64
> compiler: Debian clang version 20.1.8 (++20250708063551+0c9f909b7976-1~exp1~20250708183702.136), Debian LLD 20.1.8
> config: https://ci.syzbot.org/builds/5e67ae6c-bfc6-42cc-ab94-ff0cde528221/config
> C repro: https://ci.syzbot.org/findings/39fb9135-9abf-418b-82a0-6478c7642a48/c_repro
> syz repro: https://ci.syzbot.org/findings/39fb9135-9abf-418b-82a0-6478c7642a48/syz_repro
>
> syz.0.17 uses obsolete (PF_INET,SOCK_PACKET)
> ------------[ cut here ]------------
> WARNING: CPU: 1 PID: 5956 at ./include/linux/skbuff.h:3071 skb_transport_header include/linux/skbuff.h:3071 [inline]
> WARNING: CPU: 1 PID: 5956 at ./include/linux/skbuff.h:3071 tcp_hdr include/linux/tcp.h:26 [inline]
> WARNING: CPU: 1 PID: 5956 at ./include/linux/skbuff.h:3071 tcp_hdrlen include/linux/tcp.h:36 [inline]
> WARNING: CPU: 1 PID: 5956 at ./include/linux/skbuff.h:3071 virtio_net_hdr_from_skb+0x5e6/0x8d0 include/linux/virtio_net.h:226
> Modules linked in:
> CPU: 1 UID: 0 PID: 5956 Comm: syz.0.17 Not tainted syzkaller #0 PREEMPT(full)
> Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.2-debian-1.16.2-1 04/01/2014
> RIP: 0010:skb_transport_header include/linux/skbuff.h:3071 [inline]
> RIP: 0010:tcp_hdr include/linux/tcp.h:26 [inline]
> RIP: 0010:tcp_hdrlen include/linux/tcp.h:36 [inline]
> RIP: 0010:virtio_net_hdr_from_skb+0x5e6/0x8d0 include/linux/virtio_net.h:226
> Code: 6f 01 4c 89 e8 48 c1 e8 03 0f b6 04 28 84 c0 0f 85 d8 02 00 00 41 c6 45 00 05 66 41 bf 08 00 e9 2c fd ff ff e8 2b 33 a8 f7 90 <0f> 0b 90 e9 f4 fb ff ff e8 1d 33 a8 f7 90 0f 0b 90 e9 b7 fc ff ff
> RSP: 0018:ffffc90003777228 EFLAGS: 00010293
> RAX: ffffffff8a16e845 RBX: ffff8881763f4fd0 RCX: ffff888106388000
> RDX: 0000000000000000 RSI: 000000000000ffff RDI: 000000000000ffff
> RBP: 000000000000ffff R08: ffff88817517f059 R09: 0000000000000000
> R10: ffff88817517f050 R11: ffffed102ea2fe0c R12: ffff88816a55a498
> R13: ffff8881763f4fb6 R14: ffff8881763f4f00 R15: 1ffff1102ec7e9f6
> FS: 0000555585886500(0000) GS:ffff8882a9d3b000(0000) knlGS:0000000000000000
> CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
> CR2: 0000200000010000 CR3: 00000001128ba000 CR4: 00000000000006f0
> Call Trace:
> <TASK>
> tpacket_rcv+0x1527/0x31c0 net/packet/af_packet.c:2362
> deliver_skb net/core/dev.c:2472 [inline]
> deliver_ptype_list_skb net/core/dev.c:2487 [inline]
> __netif_receive_skb_core+0x3465/0x4380 net/core/dev.c:6023
> __netif_receive_skb_one_core net/core/dev.c:6077 [inline]
> __netif_receive_skb+0x72/0x380 net/core/dev.c:6192
> netif_receive_skb_internal net/core/dev.c:6278 [inline]
> netif_receive_skb+0x1cb/0x790 net/core/dev.c:6337
> tun_rx_batched+0x1b9/0x730 drivers/net/tun.c:1485
> tun_get_user+0x2b65/0x3e90 drivers/net/tun.c:1953
> tun_chr_write_iter+0x113/0x200 drivers/net/tun.c:1999
> new_sync_write fs/read_write.c:593 [inline]
> vfs_write+0x5c9/0xb30 fs/read_write.c:686
> ksys_write+0x145/0x250 fs/read_write.c:738
> do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
> do_syscall_64+0xfa/0xfa0 arch/x86/entry/syscall_64.c:94
> entry_SYSCALL_64_after_hwframe+0x77/0x7f
> RIP: 0033:0x7fd130b8eec9
> 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 a8 ff ff ff f7 d8 64 89 01 48
> RSP: 002b:00007ffcdba8f558 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
> RAX: ffffffffffffffda RBX: 00007fd130de5fa0 RCX: 00007fd130b8eec9
> RDX: 000000000000fdef RSI: 00002000000002c0 RDI: 0000000000000003
> RBP: 00007fd130c11f91 R08: 0000000000000000 R09: 0000000000000000
> R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
> R13: 00007fd130de5fa0 R14: 00007fd130de5fa0 R15: 0000000000000003
> </TASK>
>
>
> ***
>
> If these findings have caused you to resend the series or submit a
> separate fix, please add the following tag to your commit message:
> Tested-by: syzbot@syzkaller.appspotmail.com
>
> ---
> This report is generated by a bot. It may contain errors.
> syzbot ci engineers can be reached at syzkaller@googlegroups.com.
>
> The email will later be sent to:
> [alvaro.karsz@solid-run.com andrew@lunn.ch davem@davemloft.net edumazet@google.com eperezma@redhat.com hengqi@linux.alibaba.com jasowang@redhat.com jiri@resnulli.us kuba@kernel.org mst@redhat.com netdev@vger.kernel.org pabeni@redhat.com virtualization@lists.linux.dev willemb@google.com xuanzhuo@linux.alibaba.com]
>
> If the report looks fine to you, reply with:
> #syz upstream
>
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^ permalink raw reply [flat|nested] 4+ messages in thread
end of thread, other threads:[~2025-10-11 14:10 UTC | newest]
Thread overview: 4+ messages (download: mbox.gz follow: Atom feed
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2025-09-25 6:22 [moderation/CI] Re: fixes two virtio-net related bugs syzbot ci
2025-09-25 7:11 ` Aleksandr Nogikh
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2025-10-11 13:34 syzbot ci
2025-10-11 14:10 ` Aleksandr Nogikh
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