diff options
| author | Arnd Bergmann <arnd@arndb.de> | 2013-04-09 15:50:59 +0200 |
|---|---|---|
| committer | Arnd Bergmann <arnd@arndb.de> | 2013-04-09 16:01:23 +0200 |
| commit | 835f9c38bbb4498c3d43b7466964bdadbb1fd244 (patch) | |
| tree | ade5aec66bc7ddb97048c4f141932de0f93369b9 /fs/compat.c | |
| parent | f5f29151588744ea2e283971cb0ad403ee04e3e2 (diff) | |
| parent | a937536b868b8369b98967929045f1df54234323 (diff) | |
Merge tag 'v3.9-rc3' into next/multiplatform
Linux 3.9-rc3
Conflicts:
arch/arm/Kconfig
arch/arm/mach-spear/spear3xx.c
arch/arm/plat-spear/Kconfig
This is a dependency for ux500/multiplatform
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Diffstat (limited to 'fs/compat.c')
| -rw-r--r-- | fs/compat.c | 15 |
1 files changed, 7 insertions, 8 deletions
diff --git a/fs/compat.c b/fs/compat.c index fe40fde29111..d487985dd0ea 100644 --- a/fs/compat.c +++ b/fs/compat.c @@ -558,6 +558,10 @@ ssize_t compat_rw_copy_check_uvector(int type, } *ret_pointer = iov; + ret = -EFAULT; + if (!access_ok(VERIFY_READ, uvector, nr_segs*sizeof(*uvector))) + goto out; + /* * Single unix specification: * We should -EINVAL if an element length is not >= 0 and fitting an @@ -1080,17 +1084,12 @@ static ssize_t compat_do_readv_writev(int type, struct file *file, if (!file->f_op) goto out; - ret = -EFAULT; - if (!access_ok(VERIFY_READ, uvector, nr_segs*sizeof(*uvector))) - goto out; - - tot_len = compat_rw_copy_check_uvector(type, uvector, nr_segs, + ret = compat_rw_copy_check_uvector(type, uvector, nr_segs, UIO_FASTIOV, iovstack, &iov); - if (tot_len == 0) { - ret = 0; + if (ret <= 0) goto out; - } + tot_len = ret; ret = rw_verify_area(type, file, pos, tot_len); if (ret < 0) goto out; |