diff options
| author | Jakub Kicinski <kuba@kernel.org> | 2026-05-26 08:35:30 -0700 |
|---|---|---|
| committer | Jakub Kicinski <kuba@kernel.org> | 2026-05-27 17:42:08 -0700 |
| commit | c3fc9976f686f9a95baf87db9d387f218fd65394 (patch) | |
| tree | 711c0076de4a13997b51cb31227a305c6c1b5565 | |
| parent | 1de405699c62c3a9544bcdcfb9eff8a01cfc7582 (diff) | |
ethtool: tsinfo: don't pass ERR_PTR to genlmsg_cancel on prepare failure
The goto err label leads to:
genlmsg_cancel(skb, ehdr);
return ret;
If ethnl_tsinfo_prepare_dump() failed, it has not started a genlmsg.
There's nothing to cancel, and passing an error pointer to
genlmsg_cancel() would cause a crash.
Fixes: b9e3f7dc9ed9 ("net: ethtool: tsinfo: Enhance tsinfo to support several hwtstamp by net topology")
Reviewed-by: Maxime Chevallier <maxime.chevallier@bootlin.com>
Reviewed-by: Kory Maincent <kory.maincent@bootlin.com>
Link: https://patch.msgid.link/20260526153533.2779187-8-kuba@kernel.org
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
| -rw-r--r-- | net/ethtool/tsinfo.c | 6 |
1 files changed, 2 insertions, 4 deletions
diff --git a/net/ethtool/tsinfo.c b/net/ethtool/tsinfo.c index f54fe6b662b2..14bf01e3b55c 100644 --- a/net/ethtool/tsinfo.c +++ b/net/ethtool/tsinfo.c @@ -407,10 +407,8 @@ static int ethnl_tsinfo_dump_one_netdev(struct sk_buff *skb, continue; ehdr = ethnl_tsinfo_prepare_dump(skb, dev, reply_data, cb); - if (IS_ERR(ehdr)) { - ret = PTR_ERR(ehdr); - goto err; - } + if (IS_ERR(ehdr)) + return PTR_ERR(ehdr); reply_data->ts_info.phc_qualifier = ctx->pos_phcqualifier; ret = ops->get_ts_info(dev, &reply_data->ts_info); |