diff options
| author | Luis R. Rodriguez <mcgrof@suse.com> | 2015-05-12 14:49:40 -0700 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2015-05-24 12:36:34 -0700 |
| commit | f5727b05d221796baf69667ed5c891d4bd53711e (patch) | |
| tree | c6a919fa3ed296526cbbb1719810e5b2429785d7 /drivers/base | |
| parent | f4445f8b204de44a8baa4326b0e56537be867427 (diff) | |
| download | linux-f5727b05d221796baf69667ed5c891d4bd53711e.tar.gz | |
firmware: fix __getname() missing failure check
The request_firmware*() APIs uses __getname() to iterate
over the list of paths possible for firmware to be found,
the code however never checked for failure on __getname().
Although *very unlikely*, this can still happen. Add the
missing check.
There is still no checks on the concatenation of the path
and filename passed, that requires a bit more work and
subsequent patches address this. The commit that introduced
this is abb139e7 ("firmware: teach the kernel to load
firmware files directly from the filesystem").
mcgrof@ergon ~/linux (git::firmware-fixes) $ git describe --contains abb139e7
v3.7-rc1~120
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Ming Lei <ming.lei@canonical.com>
Cc: Rusty Russell <rusty@rustcorp.com.au>
Cc: David Howells <dhowells@redhat.com>
Cc: Kyle McMartin <kyle@kernel.org>
Signed-off-by: Luis R. Rodriguez <mcgrof@suse.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/base')
| -rw-r--r-- | drivers/base/firmware_class.c | 6 |
1 files changed, 5 insertions, 1 deletions
diff --git a/drivers/base/firmware_class.c b/drivers/base/firmware_class.c index 171841ad1008..49139a1ee25e 100644 --- a/drivers/base/firmware_class.c +++ b/drivers/base/firmware_class.c @@ -322,7 +322,11 @@ static int fw_get_filesystem_firmware(struct device *device, { int i; int rc = -ENOENT; - char *path = __getname(); + char *path; + + path = __getname(); + if (!path) + return -ENOMEM; for (i = 0; i < ARRAY_SIZE(fw_path); i++) { struct file *file; |