From: Al Viro viro@zeniv.linux.org.uk
stable inclusion from linux-4.19.198 commit faf8ab4355ec527f7fd1a4bab8c66f596c8490a8
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commit 0e8f0d67401589a141950856902c7d0ec8d9c985 upstream.
... and actually should just check it's given an iovec-backed iterator in the first place.
Cc: stable@vger.kernel.org Signed-off-by: Al Viro viro@zeniv.linux.org.uk Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org Signed-off-by: Yang Yingliang yangyingliang@huawei.com --- lib/iov_iter.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/lib/iov_iter.c b/lib/iov_iter.c index a19d3423d775f..da01bb6551d97 100644 --- a/lib/iov_iter.c +++ b/lib/iov_iter.c @@ -417,7 +417,7 @@ int iov_iter_fault_in_readable(struct iov_iter *i, size_t bytes) int err; struct iovec v;
- if (!(i->type & (ITER_BVEC|ITER_KVEC))) { + if (iter_is_iovec(i)) { iterate_iovec(i, bytes, v, iov, skip, ({ err = fault_in_pages_readable(v.iov_base, v.iov_len); if (unlikely(err))