From: syzbot ci <syzbot+ci098fa7c1795eceac@syzkaller.appspotmail.com>
To: andrew@lunn.ch, bridge@lists.linux.dev, davem@davemloft.net,
edumazet@google.com, horms@kernel.org, idosch@nvidia.com,
jiri@resnulli.us, jv@jvosburgh.net, kuba@kernel.org,
linux-kernel@vger.kernel.org, liuhangbin@gmail.com,
netdev@vger.kernel.org, pabeni@redhat.com, razor@blackwall.org,
sridhar.samudrala@intel.com
Cc: syzbot@lists.linux.dev, syzkaller-bugs@googlegroups.com
Subject: [syzbot ci] Re: net: move netdev_compute_master_upper_features to ndo_set_features
Date: Tue, 10 Mar 2026 10:02:09 -0700 [thread overview]
Message-ID: <69b04e91.a70a0220.51e36.0000.GAE@google.com> (raw)
In-Reply-To: <20260310-offload_compute-v1-0-3df79c09ea65@gmail.com>
syzbot ci has tested the following series
[v1] net: move netdev_compute_master_upper_features to ndo_set_features
https://lore.kernel.org/all/20260310-offload_compute-v1-0-3df79c09ea65@gmail.com
* [PATCH net-next 1/3] net: use ndo_set_features to set offload features for bonding/bridge/team
* [PATCH net-next 2/3] failover: use ndo_set_features for failover offload compute
* [PATCH net-next 3/3] net: no need to disable LRO specifically
and found the following issue:
WARNING in rtmsg_ifinfo_build_skb
Full report is available here:
https://ci.syzbot.org/series/d5001c4a-a51e-49c1-9106-624836e43ec2
***
WARNING in rtmsg_ifinfo_build_skb
tree: net-next
URL: https://kernel.googlesource.com/pub/scm/linux/kernel/git/netdev/net-next.git
base: 52ede1bce557c66309f41ac29dd190be23ca9129
arch: amd64
compiler: Debian clang version 21.1.8 (++20251221033036+2078da43e25a-1~exp1~20251221153213.50), Debian LLD 21.1.8
config: https://ci.syzbot.org/builds/281e7e02-f6af-4b4a-845e-d1d5842a9301/config
batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active
hsr_slave_0: entered promiscuous mode
hsr_slave_1: entered promiscuous mode
------------[ cut here ]------------
err == -EMSGSIZE
WARNING: net/core/rtnetlink.c:4421 at rtmsg_ifinfo_build_skb+0x218/0x260, CPU#0: syz-executor/6496
Modules linked in:
CPU: 0 UID: 0 PID: 6496 Comm: syz-executor 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:rtmsg_ifinfo_build_skb+0x218/0x260
Code: f6 ba 01 00 00 00 89 e9 e8 25 15 3a 00 4c 89 f0 48 83 c4 30 5b 41 5c 41 5d 41 5e 41 5f 5d e9 7f 3a 2e 02 cc e8 49 3b 42 f8 90 <0f> 0b 90 eb 90 89 d9 80 e1 07 fe c1 38 c1 0f 8c 95 fe ff ff 48 89
RSP: 0018:ffffc9000637e9a0 EFLAGS: 00010293
RAX: ffffffff89835e27 RBX: 0000000000000000 RCX: ffff8881b80a57c0
RDX: 0000000000000000 RSI: 00000000ffffffa6 RDI: 00000000ffffffa6
RBP: 00000000ffffffa6 R08: 0000000000000004 R09: 0000000000000004
R10: fffff52000c6fcdc R11: 0000000000000000 R12: 1ffff110235ddc21
R13: 0000000000000000 R14: ffff8881133dc780 R15: ffff88811aeee000
FS: 0000555557c4a500(0000) GS:ffff88818de65000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000055555e1838c8 CR3: 0000000168b80000 CR4: 00000000000006f0
Call Trace:
<TASK>
rtnetlink_event+0x1b7/0x270
notifier_call_chain+0x1be/0x400
netdev_change_features+0x95/0xe0
__netdev_upper_dev_link+0xb20/0xc80
netdev_upper_dev_link+0xb0/0x100
macsec_newlink+0xb11/0x1200
rtnl_newlink_create+0x329/0xb70
rtnl_newlink+0x1666/0x1be0
rtnetlink_rcv_msg+0x7d5/0xbe0
netlink_rcv_skb+0x232/0x4b0
netlink_unicast+0x80f/0x9b0
netlink_sendmsg+0x813/0xb40
__sys_sendto+0x672/0x710
__x64_sys_sendto+0xde/0x100
do_syscall_64+0x14d/0xf80
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7ffadf757917
Code: 48 89 fa 4c 89 df e8 a8 56 00 00 8b 93 08 03 00 00 59 5e 48 83 f8 fc 74 1a 5b c3 0f 1f 84 00 00 00 00 00 48 8b 44 24 10 0f 05 <5b> c3 0f 1f 80 00 00 00 00 83 e2 39 83 fa 08 75 de e8 23 ff ff ff
RSP: 002b:00007ffd0eb79f80 EFLAGS: 00000202 ORIG_RAX: 000000000000002c
RAX: ffffffffffffffda RBX: 0000555557c4a500 RCX: 00007ffadf757917
RDX: 0000000000000054 RSI: 00007ffae0544670 RDI: 0000000000000003
RBP: 0000000000000001 R08: 00007ffd0eb79fe4 R09: 000000000000000c
R10: 0000000000000000 R11: 0000000000000202 R12: 0000000000000003
R13: 0000000000000000 R14: 00007ffae0544670 R15: 0000000000000000
</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.
next prev parent reply other threads:[~2026-03-10 17:02 UTC|newest]
Thread overview: 15+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-03-10 7:45 [PATCH net-next 0/3] net: move netdev_compute_master_upper_features to ndo_set_features Hangbin Liu
2026-03-10 7:45 ` [PATCH net-next 1/3] net: use ndo_set_features to set offload features for bonding/bridge/team Hangbin Liu
2026-03-10 7:45 ` [PATCH net-next 2/3] failover: use ndo_set_features for failover offload compute Hangbin Liu
2026-03-10 7:45 ` [PATCH net-next 3/3] net: no need to disable LRO specifically Hangbin Liu
2026-03-10 17:02 ` syzbot ci [this message]
2026-03-10 19:17 ` [syzbot ci] Re: net: move netdev_compute_master_upper_features to ndo_set_features Sabrina Dubroca
2026-03-11 0:47 ` Hangbin Liu
2026-03-11 21:18 ` Sabrina Dubroca
2026-03-12 9:40 ` Paolo Abeni
2026-03-12 11:13 ` Sabrina Dubroca
2026-03-12 14:34 ` Hangbin Liu
2026-03-12 15:58 ` Sabrina Dubroca
2026-03-12 16:47 ` Paolo Abeni
2026-03-12 17:07 ` Sabrina Dubroca
2026-03-12 9:46 ` [PATCH net-next 0/3] " Paolo Abeni
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