Am 22.02.22 um 12:30 schrieb xkernel.wang@foxmail.com:
From: Xiaoke Wang xkernel.wang@foxmail.com
kstrdup() is a memory allocation function which can return NULL when some internaly memory errors happen. It is better to check the return value of it to prevent further wrong memory access.
Signed-off-by: Xiaoke Wang xkernel.wang@foxmail.com
Acked-by: Christian König christian.koenig@amd.com
drivers/dma-buf/selftest.c | 3 +++ 1 file changed, 3 insertions(+)
diff --git a/drivers/dma-buf/selftest.c b/drivers/dma-buf/selftest.c index c60b694..2c29e2a 100644 --- a/drivers/dma-buf/selftest.c +++ b/drivers/dma-buf/selftest.c @@ -50,6 +50,9 @@ static bool apply_subtest_filter(const char *caller, const char *name) bool result = true; filter = kstrdup(__st_filter, GFP_KERNEL);
- if (!filter)
return false;- for (sep = filter; (tok = strsep(&sep, ","));) { bool allow = true; char *sl;