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| author | Michael S. Tsirkin <mst@redhat.com> | 2016-02-28 17:44:09 +0200 |
|---|---|---|
| committer | Willy Tarreau <w@1wt.eu> | 2016-06-07 10:42:46 +0200 |
| commit | 9bd0caf31ca013ed42e4a00dd2872035975e5b04 (patch) | |
| tree | ff268ebc69fa8a299c090c1c8478689c897444ff /fs | |
| parent | f5b0d85307a93e081aa254c9cb28a44de8ff8e81 (diff) | |
| download | lwn-9bd0caf31ca013ed42e4a00dd2872035975e5b04.tar.gz lwn-9bd0caf31ca013ed42e4a00dd2872035975e5b04.zip | |
watchdog: rc32434_wdt: fix ioctl error handling
commit 10e7ac22cdd4d211cef99afcb9371b70cb175be6 upstream.
Calling return copy_to_user(...) in an ioctl will not do the right thing
if there's a pagefault: copy_to_user returns the number of bytes not
copied in this case.
Fix up watchdog/rc32434_wdt to do
return copy_to_user(...)) ? -EFAULT : 0;
instead.
Cc: stable@vger.kernel.org
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Wim Van Sebroeck <wim@iguana.be>
Signed-off-by: Willy Tarreau <w@1wt.eu>
Diffstat (limited to 'fs')
0 files changed, 0 insertions, 0 deletions