6.11-stable review patch. If anyone has any objections, please let me know.
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From: Eduard Zingerman eddyz87@gmail.com
commit d0a29cdb6ef95d8a175e09ab2d1334271f047e60 upstream.
Suppose log="foo bar buz" and msg->substr="bar". In such case current match processing logic would update 'log' as follows: log += strlen(msg->substr); -> log += 3 -> log=" bar". However, the intent behind the 'log' update is to make it point after the successful match, e.g. to make log=" buz" in the example above.
Fixes: 4ef5d6af4935 ("selftests/bpf: no need to track next_match_pos in struct test_loader") Signed-off-by: Eduard Zingerman eddyz87@gmail.com Link: https://lore.kernel.org/r/20240820102357.3372779-3-eddyz87@gmail.com Signed-off-by: Alexei Starovoitov ast@kernel.org Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org --- tools/testing/selftests/bpf/test_loader.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
--- a/tools/testing/selftests/bpf/test_loader.c +++ b/tools/testing/selftests/bpf/test_loader.c @@ -545,7 +545,7 @@ static void validate_msgs(char *log_buf, if (msg->substr) { match = strstr(log, msg->substr); if (match) - log += strlen(msg->substr); + log = match + strlen(msg->substr); } else { err = regexec(&msg->regex, log, 1, reg_match, 0); if (err == 0) {