diff options
| author | Linus Torvalds <torvalds@linux-foundation.org> | 2014-05-28 11:15:57 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2014-05-28 11:15:57 -0700 |
| commit | 282695802957b069d293a9f8773a14399093bd6f (patch) | |
| tree | c362f39413243fb3f153104afa81028dad497b07 | |
| parent | 4efdedca932658cc54866ee19001af3cbffa3769 (diff) | |
| parent | b6dd6f4738837439c520e73995ec93fe1de2ec72 (diff) | |
Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs
Pull vfs fix from Al Viro:
"Oh, well... Still nothing useful on that livelock (I had something
that looked kinda-sorta like a non-invasive solution, but it
deadlocks), so it's just Miklos' vmsplice fix for now"
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs:
vfs: fix vmplice_to_user()
| -rw-r--r-- | fs/splice.c | 6 |
1 files changed, 4 insertions, 2 deletions
diff --git a/fs/splice.c b/fs/splice.c index 9bc07d2b53c..e246954ea48 100644 --- a/fs/splice.c +++ b/fs/splice.c @@ -1537,7 +1537,7 @@ static long vmsplice_to_user(struct file *file, const struct iovec __user *uiov, struct iovec iovstack[UIO_FASTIOV]; struct iovec *iov = iovstack; struct iov_iter iter; - ssize_t count = 0; + ssize_t count; pipe = get_pipe_info(file); if (!pipe) @@ -1546,8 +1546,9 @@ static long vmsplice_to_user(struct file *file, const struct iovec __user *uiov, ret = rw_copy_check_uvector(READ, uiov, nr_segs, ARRAY_SIZE(iovstack), iovstack, &iov); if (ret <= 0) - return ret; + goto out; + count = ret; iov_iter_init(&iter, iov, nr_segs, count, 0); sd.len = 0; @@ -1560,6 +1561,7 @@ static long vmsplice_to_user(struct file *file, const struct iovec __user *uiov, ret = __splice_from_pipe(pipe, &sd, pipe_to_user); pipe_unlock(pipe); +out: if (iov != iovstack) kfree(iov); |