net: Add skb_dstref_steal and skb_dstref_restore

Browse source

[ Upstream commit c3f0c02997 ]

Going forward skb_dst_set will assert that skb dst_entry
is empty during skb_dst_set to prevent potential leaks. There
are few places that still manually manage dst_entry not using
the helpers. Convert them to the following new helpers:
- skb_dstref_steal that resets dst_entry and returns previous dst_entry
  value
- skb_dstref_restore that restores dst_entry previously reset via
  skb_dstref_steal

Signed-off-by: Stanislav Fomichev <sdf@fomichev.me>
Link: https://patch.msgid.link/20250818154032.3173645-2-sdf@fomichev.me
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Stable-dep-of: 81b84de32b ("xfrm: fix ip_rt_bug race in icmp_route_lookup reverse path")
Signed-off-by: Sasha Levin <sashal@kernel.org>

...

This commit is contained in:

Stanislav Fomichev 2025-08-18 08:40:26 -07:00 • committed by Sasha Levin

parent b89269bdb3

commit 791f028b1e

1 changed files with 32 additions and 0 deletions

Show all changes Ignore whitespace when comparing lines Ignore changes in amount of whitespace Ignore changes in whitespace at EOL

Download patch file Download diff file Expand all files Collapse all files

32

include/linux/skbuff.h

View file