[PATCH] alpha: add null pointer check

[cgel . zte]

From: Lv Ruyi <lv.ruyi@xxxxxxxxxx>

kmalloc is a memory allocation function which can return NULL when some
internal memory errors happen. Add null pointer check to avoid
dereferencing null pointer.

Reported-by: Zeal Robot <zealci@xxxxxxxxxx>
Signed-off-by: Lv Ruyi <lv.ruyi@xxxxxxxxxx>
---
 arch/alpha/kernel/module.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/arch/alpha/kernel/module.c b/arch/alpha/kernel/module.c
index 5b60c248de9e..5442b75a98c2 100644
--- a/arch/alpha/kernel/module.c
+++ b/arch/alpha/kernel/module.c
@@ -47,6 +47,8 @@ process_reloc_for_got(Elf64_Rela *rela,
 		}
 
 	g = kmalloc (sizeof (*g), GFP_KERNEL);
+	if (!g)
+		return;
 	g->next = chains[r_sym].next;
 	g->r_addend = r_addend;
 	g->got_offset = *poffset;
-- 
2.25.1