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-rw-r--r--fs/dlm/lowcomms.c6
1 files changed, 6 insertions, 0 deletions
diff --git a/fs/dlm/lowcomms.c b/fs/dlm/lowcomms.c
index 77382c2ce6da..620eca3979d5 100644
--- a/fs/dlm/lowcomms.c
+++ b/fs/dlm/lowcomms.c
@@ -1352,6 +1352,12 @@ void *dlm_lowcomms_get_buffer(int nodeid, int len, gfp_t allocation, char **ppc)
struct writequeue_entry *e;
int offset = 0;
+ if (len > LOWCOMMS_MAX_TX_BUFFER_LEN) {
+ BUILD_BUG_ON(PAGE_SIZE < LOWCOMMS_MAX_TX_BUFFER_LEN);
+ log_print("failed to allocate a buffer of size %d", len);
+ return NULL;
+ }
+
con = nodeid2con(nodeid, allocation);
if (!con)
return NULL;