| commit | b5b38200ebe54879a7264cb6f33821f61c586a7e | [log] [tgz] |
|---|---|---|
| author | Kees Cook <keescook@chromium.org> | Tue Mar 27 14:06:14 2018 -0700 |
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | Wed Mar 28 13:23:54 2018 +0200 |
| tree | 80880ee96abcb2a7ce8edbdca6de36d224998157 | |
| parent | b24d0d5b12a678b96676348976982686fbe222b4 [diff] |
/dev/mem: Avoid overwriting "err" in read_mem()
Successes in probe_kernel_read() would mask failures in copy_to_user()
during read_mem().
Reported-by: Brad Spengler <spender@grsecurity.net>
Fixes: 22ec1a2aea73 ("/dev/mem: Add bounce buffer for copy-out")
Cc: stable@vger.kernel.org
Signed-off-by: Kees Cook <keescook@chromium.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>