[PATCH] docproc: handle realloc() failure in find_all_symbols()

[Arjun Sreedharan]

check realloc rc and avoid potential null dereference
and memory leak

Signed-off-by: Arjun Sreedharan <arjun024@xxxxxxxxx>
---
 scripts/docproc.c | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/scripts/docproc.c b/scripts/docproc.c
index e267e621..438fc91 100644
--- a/scripts/docproc.c
+++ b/scripts/docproc.c
@@ -396,6 +396,10 @@ static void find_all_symbols(char *filename)
 						   4096)) > 0) {
 					data_len += ret;
 					data = realloc(data, data_len + 4096);
+					if (data == NULL) {
+						perror("realloc");
+						exit(1);
+					}
 				}
 			} while (ret == -EAGAIN);
 			if (ret != 0) {
@@ -420,6 +424,10 @@ static void find_all_symbols(char *filename)
 	start = all_list_len;
 	all_list_len += count;
 	all_list = realloc(all_list, sizeof(char *) * all_list_len);
+	if (all_list == NULL) {
+		perror("realloc");
+		exit(1);
+	}
 	str = data;
 	for (i = 0; i < data_len && start != all_list_len; i++) {
 		if (data[i] == '\0') {
-- 
1.8.1.msysgit.1

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