diff options
| author | Michael Ellerman <mpe@ellerman.id.au> | 2019-04-22 00:20:15 +1000 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2019-05-16 19:44:48 +0200 |
| commit | 1110c3ad0b66409046e9bbe79029aeb2176b6036 (patch) | |
| tree | 9ff69bc487719151a8bbec16ce096652fcc3f0ae /sound/usb/power.h | |
| parent | 2a90ebba2fccef2853063fe7412c20dacc5af7e7 (diff) | |
powerpc: Use barrier_nospec in copy_from_user()
commit ddf35cf3764b5a182b178105f57515b42e2634f8 upstream.
Based on the x86 commit doing the same.
See commit 304ec1b05031 ("x86/uaccess: Use __uaccess_begin_nospec()
and uaccess_try_nospec") and b3bbfb3fb5d2 ("x86: Introduce
__uaccess_begin_nospec() and uaccess_try_nospec") for more detail.
In all cases we are ordering the load from the potentially
user-controlled pointer vs a previous branch based on an access_ok()
check or similar.
Base on a patch from Michal Suchanek.
Signed-off-by: Michal Suchanek <msuchanek@suse.de>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'sound/usb/power.h')
0 files changed, 0 insertions, 0 deletions