kasprintf() returns a pointer to dynamically allocated memory
which can be NULL upon failure. Ensure the allocation was successful
by checking the pointer validity.
Suggested-by: Christophe Leroy <christophe.le...@csgroup.eu>
Suggested-by: Michael Ellerman <m...@ellerman.id.au>
Signed-off-by: Kunwu Chan <chen...@kylinos.cn>
---
v2: Use "panic" instead of "return"
---
arch/powerpc/mm/init-common.c | 2 ++
1 file changed, 2 insertions(+)
diff --git a/arch/powerpc/mm/init-common.c b/arch/powerpc/mm/init-common.c
index 119ef491f797..9788950b33f5 100644
--- a/arch/powerpc/mm/init-common.c
+++ b/arch/powerpc/mm/init-common.c
@@ -139,6 +139,8 @@ void pgtable_cache_add(unsigned int shift)
align = max_t(unsigned long, align, minalign);
name = kasprintf(GFP_KERNEL, "pgtable-2^%d", shift);
+ if (!name)
+ panic("Failed to allocate memory for order %d", shift);
new = kmem_cache_create(name, table_size, align, 0, ctor(shift));
if (!new)
panic("Could not allocate pgtable cache for order %d", shift);
--
2.34.1
