From: Alexei Starovoitov Date: Sun, 12 Apr 2026 22:42:57 +0000 (-0700) Subject: Merge branch 'bpf-fix-short-ipv4-ipv6-handling-in-test_run_skb' X-Git-Url: http://git.ipfire.org/gitweb.cgi?a=commitdiff_plain;h=71b500afd2f7336f5b6c6026f2af546fc079be26;p=thirdparty%2Fkernel%2Flinux.git Merge branch 'bpf-fix-short-ipv4-ipv6-handling-in-test_run_skb' Sun Jian says: ==================== bpf: fix short IPv4/IPv6 handling in test_run_skb bpf_prog_test_run_skb() may access IPv4/IPv6 network headers based on skb->protocol even when the provided test input only contains an Ethernet header. Fix it by rejecting such short IPv4/IPv6 inputs before accessing the L3 headers, and add a selftest that exercises the reported bpf_skb_adjust_room() path on ETH_HLEN-sized IPv4/IPv6 EtherType inputs. Changes in v4: - Split the selftests into a separate patch. - Rework the selftest to actually execute a BPF program calling bpf_skb_adjust_room(). - Reuse a single struct ethhdr eth_hlen and initialize h_proto from the test case table. - Add the Fixes tag to the test_run.c patch. Link: https://lore.kernel.org/bpf/CABFUUZF_CWQZrRk=L9cNxO=8Z4iSgGfXi3J=hpzeyTKDbfE2-w@mail.gmail.com/T/#mfabfe7e86bb30c0141fbc9f751b8b1cb07767f01 ==================== Link: https://patch.msgid.link/20260408034623.180320-1-sun.jian.kdev@gmail.com Signed-off-by: Alexei Starovoitov --- 71b500afd2f7336f5b6c6026f2af546fc079be26