Commit f4ef35efbb49 for kernel

commit f4ef35efbb49527293309f668ea73ec5de9b8e7a
Author: Wang Yan <wangyan01@kylinos.cn>
Date:   Thu Jul 2 10:59:49 2026 +0800

    selftests/net: fix EVP_MD_CTX leak in tcp_mmap

    In tcp_mmap.c, both child_thread() and main() allocate an EVP_MD_CTX
    via EVP_MD_CTX_new() when integrity checking is enabled, but neither
    function releases the context.  child_thread() misses the free in its
    common cleanup block, and main() returns without freeing the context.

    This results in a SHA256 context leak on every run that uses the
    ‑i (integrity) option.  Add the missing EVP_MD_CTX_free() calls to
    the appropriate cleanup paths to fix the leak.

    Fixes: 5c5945dc695c ("selftests/net: Add SHA256 computation over data sent in tcp_mmap")
    Signed-off-by: Wang Yan <wangyan01@kylinos.cn>
    Link: https://patch.msgid.link/20260702025949.442523-1-wangyan01@kylinos.cn
    Signed-off-by: Paolo Abeni <pabeni@redhat.com>

diff --git a/tools/testing/selftests/net/tcp_mmap.c b/tools/testing/selftests/net/tcp_mmap.c
index 4fcce5150850..2544ae35d07a 100644
--- a/tools/testing/selftests/net/tcp_mmap.c
+++ b/tools/testing/selftests/net/tcp_mmap.c
@@ -313,6 +313,8 @@ void *child_thread(void *arg)
 				tcp_info_get_rcv_mss(fd));
 	}
 error:
+	if (ctx)
+		EVP_MD_CTX_free(ctx);
 	munmap(buffer, buffer_sz);
 	close(fd);
 	if (zflg)
@@ -606,6 +608,8 @@ int main(int argc, char *argv[])
 		EVP_DigestFinal_ex(ctx, digest, &digest_len);
 		send(fd, digest, (size_t)SHA256_DIGEST_LENGTH, 0);
 	}
+	if (ctx)
+		EVP_MD_CTX_free(ctx);
 	close(fd);
 	munmap(buffer, buffer_sz);
 	return 0;