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 --- 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; --
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;
Hi Xiaoke,
On Tue, 22 Feb 2022 at 17:00, xkernel.wang@foxmail.com wrote:
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.
Thanks for the patch; looks sane.
Signed-off-by: Xiaoke Wang xkernel.wang@foxmail.com
Acked-by: Sumit Semwal sumit.semwal@linaro.org
Will queue it up.
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;--
Best, Sumit.
linaro-mm-sig@lists.linaro.org
-
Christian König -
Sumit Semwal -
xkernel.wang＠foxmail.com