Public bug reported:
Intro:
======
When hit a kernel warning when using openvswitch kernel module. Digging into
the source code, we found it's due to the code snippet
if (WARN_ON(i.cmd >= family->resv_start_op &&
(i.doit.validate || i.dumpit.validate)))
return -EINVAL;
in the gene_validate_ops() in net/netlink/genetlink.c, introduced in
108880a07bab genetlink: add iterator for walking family ops
from buglink
https://bugs.launchpad.net/bugs/2053155
How to fix:
===========
We need to cherry-pick the missing patch
Fixes: e4ba4554209f ("net: openvswitch: add missing .resv_start_op")
Author: Jakub Kicinski <k...@kernel.org>
Date: Thu Oct 27 20:25:01 2022 -0700
net: openvswitch: add missing .resv_start_op
I missed one of the families in OvS when annotating .resv_start_op.
This triggers the warning added in commit ce48ebdd5651 ("genetlink:
limit the use of validation workarounds to old ops").
Reported-by: syzbot+40eb8c0447c0e47a7...@syzkaller.appspotmail.com
Fixes: 9c5d03d36251 ("genetlink: start to validate reserved header bytes")
Link: https://lore.kernel.org/r/20221028032501.2724270-1-k...@kernel.org
Signed-off-by: Jakub Kicinski <k...@kernel.org>
Thanks!
** Affects: linux-bluefield (Ubuntu)
Importance: Undecided
Status: New
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https://bugs.launchpad.net/bugs/2056718
Title:
net: openvswitch: add missing .resv_start_op
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