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".
So, 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.
The semantically correct should be:
name = kstrndup(buf, count, GFP_KERNEL); if (!name) return -ENOMEM;
Cc: Dan Carpenter error27@gmail.com Cc: Takashi Iwai tiwai@suse.de Cc: Kees Cook keescook@chromium.org Cc: stable@vger.kernel.org Signed-off-by: Mirsad Goran Todorovac mirsad.todorovac@alu.unizg.hr --- lib/test_firmware.c | 12 ++++++------ 1 file changed, 6 insertions(+), 6 deletions(-)
diff --git a/lib/test_firmware.c b/lib/test_firmware.c index 1d7d480b8eeb..add4699fc6cd 100644 --- a/lib/test_firmware.c +++ b/lib/test_firmware.c @@ -214,7 +214,7 @@ 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; }
@@ -671,7 +671,7 @@ 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);
@@ -719,7 +719,7 @@ static ssize_t trigger_request_platform_store(struct device *dev,
name = kstrndup(buf, count, GFP_KERNEL); if (!name) - return -ENOSPC; + return -ENOMEM;
pr_info("inserting test platform fw '%s'\n", name); efi_embedded_fw.name = name; @@ -772,7 +772,7 @@ 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);
@@ -817,7 +817,7 @@ 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);
@@ -868,7 +868,7 @@ 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;
if (test_fw_config->partial) req->rc = request_partial_firmware_into_buf