net: Switch to skb_dstref_steal/skb_dstref_restore for ip_route_input callers

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[ Upstream commit e97e6a1830 ]

Going forward skb_dst_set will assert that skb dst_entry
is empty during skb_dst_set. skb_dstref_steal is added to reset
existing entry without doing refcnt. skb_dstref_restore should
be used to restore the previous entry. Convert icmp_route_lookup
and ip_options_rcv_srr to these helpers. Add extra call to
skb_dstref_reset to icmp_route_lookup to clear the ip_route_input
entry.

Signed-off-by: Stanislav Fomichev <sdf@fomichev.me>
Link: https://patch.msgid.link/20250818154032.3173645-5-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>

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Stanislav Fomichev 2025-08-18 08:40:29 -07:00 • committed by Sasha Levin

parent 791f028b1e

commit 35e00df60f

2 changed files with 6 additions and 6 deletions

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7

net/ipv4/icmp.c

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5

net/ipv4/ip_options.c

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