linuxmsm/laptops-kernel
0
0
Fork 0
mirror of https://github.com/linux-msm/laptops-kernel.git synced 2026-08-13 14:19:53 -07:00
Code Issues Packages Projects Releases Wiki Activity

selftests/bpf: fix signedness bug in redir_partial()

Browse Source 
When xsend() returns -1 (error), the check 'n < sizeof(buf)' incorrectly
treats it as success due to unsigned promotion. Explicitly check for -1
first.

Fixes: a4b7193d8e ("selftests/bpf: Add sockmap test for redirecting partial skb data")
Signed-off-by: Fushuai Wang <wangfushuai@baidu.com>
Link: https://lore.kernel.org/r/20250612084208.27722-1-wangfushuai@baidu.com
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
This commit is contained in:
Fushuai Wang
2025-06-12 16:52:43 -07:00
committed by Alexei Starovoitov
parent 3d71b8b9ab
commit 6a4bd31f68
1 changed files with 2 additions and 0 deletions
Download Patch File Download Diff File Expand all files Collapse all files
tools/testing/selftests/bpf/prog_tests/sockmap_listen.c
+2
View File
@@ -924,6 +924,8 @@ static void redir_partial(int family, int sotype, int sock_map, int parser_map)
goto close;
n = xsend(c1, buf, sizeof(buf), 0);
if (n == -1)
goto close;
if (n < sizeof(buf))
FAIL("incomplete write");