libtracecmd: Free buf_from in error path of tracecmd_compress_copy_fr…

…om() The failure of allocating buf_to returns without freeing buf_from. Link: https://lore.kernel.org/linux-trace-devel/[email protected] Bugzilla: https://bugzilla.kernel.org/show_bug.cgi?id=217127 Reported-by: Markus Elfring <[email protected]> Signed-off-by: Steven Rostedt (Google) <[email protected]>
jeromemarchand · Jun 5, 2023 · d7ce897 · d7ce897
1 parent 6776d7a
commit d7ce897
Showing 1 changed file with 3 additions and 1 deletion.
diff --git a/lib/trace-cmd/trace-compress.c b/lib/trace-cmd/trace-compress.c
@@ -696,8 +696,10 @@ int tracecmd_compress_copy_from(struct tracecmd_compression *handle, int fd, int
 		return -1;
 
 	buf_to = malloc(csize);
-	if (!buf_to)
+	if (!buf_to) {
+		free(buf_from);
 		return -1;
+	}
 
 	/* save the initial offset and write 0 as initial chunk count */
 	offset = lseek(handle->fd, 0, SEEK_CUR);