diff options
| author | Heiko Carstens <heiko.carstens@de.ibm.com> | 2014-01-29 23:05:46 +0100 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2014-01-30 01:22:40 +0100 |
| commit | d8d14bd09cddbaf0168d61af638455a26bd027ff (patch) | |
| tree | 7f52af4737d5435e87a25e767d04de33223fccc5 /fs | |
| parent | fs/compat: fix parameter handling for compat readv/writev syscalls (diff) | |
| download | linux-d8d14bd09cddbaf0168d61af638455a26bd027ff.tar.xz linux-d8d14bd09cddbaf0168d61af638455a26bd027ff.zip | |
fs/compat: fix lookup_dcookie() parameter handling
Commit d5dc77bfeeab ("consolidate compat lookup_dcookie()") coverted all
architectures to the new compat_sys_lookup_dcookie() syscall.
The "len" paramater of the new compat syscall must have the type
compat_size_t in order to enforce zero extension for architectures where
the ABI requires that the caller of a function performed zero and/or
sign extension to 64 bit of all parameters.
Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Cc: Al Viro <viro@zeniv.linux.org.uk>
Cc: Ingo Molnar <mingo@kernel.org>
Cc: "H. Peter Anvin" <hpa@zytor.com>
Cc: Hendrik Brueckner <brueckner@linux.vnet.ibm.com>
Cc: Martin Schwidefsky <schwidefsky@de.ibm.com>
Cc: <stable@vger.kernel.org> [v3.10+]
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'fs')
| -rw-r--r-- | fs/dcookies.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/fs/dcookies.c b/fs/dcookies.c index ab5954b50267..ac44a69fbea9 100644 --- a/fs/dcookies.c +++ b/fs/dcookies.c @@ -204,7 +204,7 @@ out: } #ifdef CONFIG_COMPAT -COMPAT_SYSCALL_DEFINE4(lookup_dcookie, u32, w0, u32, w1, char __user *, buf, size_t, len) +COMPAT_SYSCALL_DEFINE4(lookup_dcookie, u32, w0, u32, w1, char __user *, buf, compat_size_t, len) { #ifdef __BIG_ENDIAN return sys_lookup_dcookie(((u64)w0 << 32) | w1, buf, len); |