[ Upstream commit 7dae593cd226a0bca61201cf85ceb9335cf63682 ]
In a couple of situations like
name = kstrndup(buf, count, GFP_KERNEL);
if (!name)
return -ENOSPC;
the error is not actually "No space left on device", but "Out of memory".
It is semantically correct to return -ENOMEM in all failed kstrndup()
and kzalloc() cases in this driver, as it is not a problem with disk
space, but with kernel memory allocator failing allocation.
The semantically correct should be:
name = kstrndup(buf, count, GFP_KERNEL);
if (!name)
return -ENOMEM;
Cc: Dan Carpenter <[email protected]>
Cc: Takashi Iwai <[email protected]>
Cc: Kees Cook <[email protected]>
Cc: Luis R. Rodriguez <[email protected]>
Cc: Brian Norris <[email protected]>
Cc: [email protected] # 4.19, 4.14
Fixes: c92316bf8e948 ("test_firmware: add batched firmware tests")
Fixes: 0a8adf584759c ("test: add firmware_class loader test")
Fixes: eb910947c82f9 ("test: firmware_class: add asynchronous request trigger")
Fixes: 061132d2b9c95 ("test_firmware: add test custom fallback trigger")
Fixes: 7feebfa487b92 ("test_firmware: add support for request_firmware_into_buf")
Link: https://lore.kernel.org/all/[email protected]/
Signed-off-by: Mirsad Todorovac <[email protected]>
[ This is the backport of the patch to specific to 5.4 branch. There are no ]
[ semantic differences in the commit. Backport is provided for completeness sake ]
[ so it would apply to all of the supported LTS kernels. ]
---
v2:
tested on 5.4 stable build.
lib/test_firmware.c | 10 +++++-----
1 file changed, 5 insertions(+), 5 deletions(-)
diff --git a/lib/test_firmware.c b/lib/test_firmware.c
index 92d7195d5b5b..dd3850ec1dfa 100644
--- a/lib/test_firmware.c
+++ b/lib/test_firmware.c
@@ -173,7 +173,7 @@ static int __kstrncpy(char **dst, const char *name, size_t count, gfp_t gfp)
{
*dst = kstrndup(name, count, gfp);
if (!*dst)
- return -ENOSPC;
+ return -ENOMEM;
return count;
}
@@ -509,7 +509,7 @@ static ssize_t trigger_request_store(struct device *dev,
name = kstrndup(buf, count, GFP_KERNEL);
if (!name)
- return -ENOSPC;
+ return -ENOMEM;
pr_info("loading '%s'\n", name);
@@ -552,7 +552,7 @@ static ssize_t trigger_async_request_store(struct device *dev,
name = kstrndup(buf, count, GFP_KERNEL);
if (!name)
- return -ENOSPC;
+ return -ENOMEM;
pr_info("loading '%s'\n", name);
@@ -597,7 +597,7 @@ static ssize_t trigger_custom_fallback_store(struct device *dev,
name = kstrndup(buf, count, GFP_KERNEL);
if (!name)
- return -ENOSPC;
+ return -ENOMEM;
pr_info("loading '%s' using custom fallback mechanism\n", name);
@@ -648,7 +648,7 @@ static int test_fw_run_batch_request(void *data)
test_buf = kzalloc(TEST_FIRMWARE_BUF_SIZE, GFP_KERNEL);
if (!test_buf)
- return -ENOSPC;
+ return -ENOMEM;
req->rc = request_firmware_into_buf(&req->fw,
req->name,
--
2.39.3