[PATCH v1 1/1] bpf: Switch to krealloc_array()

[Andy Shevchenko]

Let the krealloc_array() copy the original data and
check for a multiplication overflow.

Signed-off-by: Andy Shevchenko <andriy.shevchenko@xxxxxxxxxxxxxxx>
---
 kernel/bpf/core.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/kernel/bpf/core.c b/kernel/bpf/core.c
index 466c2deeecff..778775bdbb2e 100644
--- a/kernel/bpf/core.c
+++ b/kernel/bpf/core.c
@@ -849,7 +849,7 @@ int bpf_jit_add_poke_descriptor(struct bpf_prog *prog,
 		return -EINVAL;
 	}
 
-	tab = krealloc(tab, size * sizeof(*poke), GFP_KERNEL);
+	tab = krealloc_array(tab, size, sizeof(*poke), GFP_KERNEL);
 	if (!tab)
 		return -ENOMEM;
 
-- 
2.43.0.rc1.1336.g36b5255a03ac