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openvswitch: switch from WARN to pr_warn

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[ Upstream commit fd954cc1919e35cb92f78671cab6e42d661945a3 ]

As noted by Paolo Abeni, pr_warn doesn't generate any splat and can still
preserve the warning to the user that feature downgrade occurred.  We
likely cannot introduce other kinds of checks / enforcement here because
syzbot can generate different genl versions to the datapath.

Reported-by: syzbot+31cde0bef4bbf8ba2d86@syzkaller.appspotmail.com
Fixes: 44da5ae5fb ("openvswitch: Drop user features if old user space attempted to create datapath")
Cc: Thomas Graf <tgraf@suug.ch>
Signed-off-by: Aaron Conole <aconole@redhat.com>
Acked-by: Ilya Maximets <i.maximets@ovn.org>
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
Aaron Conole 2022-10-25 06:50:17 -04:00 committed by Greg Kroah-Hartman
parent 96e4b1fe3e
commit 9f9f051ddf
1 changed files with 2 additions and 1 deletions
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3
net/openvswitch/datapath.c
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@ -1551,7 +1551,8 @@ static void ovs_dp_reset_user_features(struct sk_buff *skb, struct genl_info *in
if (IS_ERR(dp)) if (IS_ERR(dp))
return; return;
WARN(dp->user_features, "Dropping previously announced user features\n"); pr_warn("%s: Dropping previously announced user features\n",
ovs_dp_name(dp));
dp->user_features = 0; dp->user_features = 0;
} }