This is a note to let you know that I've just added the patch titled
test_firmware: return ENOMEM instead of ENOSPC on failed memory allocation
to the 6.1-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
test_firmware-return-enomem-instead-of-enospc-on-failed-memory-allocation.patch
and it can be found in the queue-6.1 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
>From 7dae593cd226a0bca61201cf85ceb9335cf63682 Mon Sep 17 00:00:00 2001
From: Mirsad Goran Todorovac <mirsad.todorovac@xxxxxxxxxxxx>
Date: Tue, 6 Jun 2023 09:08:10 +0200
Subject: test_firmware: return ENOMEM instead of ENOSPC on failed memory allocation
From: Mirsad Goran Todorovac <mirsad.todorovac@xxxxxxxxxxxx>
commit 7dae593cd226a0bca61201cf85ceb9335cf63682 upstream.
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 <error27@xxxxxxxxx>
Cc: Takashi Iwai <tiwai@xxxxxxx>
Cc: Kees Cook <keescook@xxxxxxxxxxxx>
Cc: "Luis R. Rodriguez" <mcgrof@xxxxxxxxxxxxxxxxxx>
Cc: Scott Branden <sbranden@xxxxxxxxxxxx>
Cc: Hans de Goede <hdegoede@xxxxxxxxxx>
Cc: Brian Norris <briannorris@xxxxxxxxxxxx>
Fixes: c92316bf8e948 ("test_firmware: add batched firmware tests")
Fixes: 0a8adf584759c ("test: add firmware_class loader test")
Fixes: 548193cba2a7d ("test_firmware: add support for firmware_request_platform")
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")
Signed-off-by: Mirsad Goran Todorovac <mirsad.todorovac@xxxxxxxxxxxx>
Reviewed-by: Dan Carpenter <dan.carpenter@xxxxxxxxxx>
Message-ID: <20230606070808.9300-1-mirsad.todorovac@xxxxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
lib/test_firmware.c | 12 ++++++------
1 file changed, 6 insertions(+), 6 deletions(-)
--- a/lib/test_firmware.c
+++ b/lib/test_firmware.c
@@ -214,7 +214,7 @@ static int __kstrncpy(char **dst, const
{
*dst = kstrndup(name, count, gfp);
if (!*dst)
- return -ENOSPC;
+ return -ENOMEM;
return count;
}
@@ -671,7 +671,7 @@ static ssize_t trigger_request_store(str
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_
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_sto
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_s
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(voi
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
Patches currently in stable-queue which might be from mirsad.todorovac@xxxxxxxxxxxx are
queue-6.1/test_firmware-return-enomem-instead-of-enospc-on-failed-memory-allocation.patch
