From: Paolo Abeni Date: Thu, 17 Apr 2025 10:52:36 +0000 (+0200) Subject: Merge branch 'mitigate-double-allocations-in-ioam6_iptunnel' X-Git-Tag: v6.16-rc1~132^2~276 X-Git-Url: http://git.ipfire.org/?a=commitdiff_plain;h=4a1f69b94124c3bb45de62391e9e07bdd199b00e;p=thirdparty%2Flinux.git Merge branch 'mitigate-double-allocations-in-ioam6_iptunnel' Justin Iurman says: ==================== Mitigate double allocations in ioam6_iptunnel Commit dce525185bc9 ("net: ipv6: ioam6_iptunnel: mitigate 2-realloc issue") fixed the double allocation issue in ioam6_iptunnel. However, since commit 92191dd10730 ("net: ipv6: fix dst ref loops in rpl, seg6 and ioam6 lwtunnels"), the fix was left incomplete. Because the cache is now empty when the dst_entry is the same post transformation in order to avoid a reference loop, the double reallocation is back for such cases (e.g., inline mode) which are valid for IOAM. This patch provides a way to detect such cases without having a reference loop in the cache, and so to avoid the double reallocation issue for all cases again. v1: https://lore.kernel.org/netdev/20250410152432.30246-1-justin.iurman@uliege.be/T/#t ==================== Link: https://patch.msgid.link/20250415112554.23823-1-justin.iurman@uliege.be Signed-off-by: Paolo Abeni --- 4a1f69b94124c3bb45de62391e9e07bdd199b00e