KVM: arm64: vgic-v3: Add ICV_PMR_EL1 handler

[linux.git] / lib / iov_iter.c

diff --git a/lib/iov_iter.c b/lib/iov_iter.c
index ae82d9cea5533647181cea7b6c3d005838bfc0f8..f835964c9485f147699609bf2c2dc1ffecb8833b 100644 (file)
--- a/lib/iov_iter.c
+++ b/lib/iov_iter.c
@@ -790,6 +790,8 @@ void iov_iter_revert(struct iov_iter *i, size_t unroll)
 {
        if (!unroll)
                return;
+       if (WARN_ON(unroll > MAX_RW_COUNT))
+               return;
        i->count += unroll;
        if (unlikely(i->type & ITER_PIPE)) {
                struct pipe_inode_info *pipe = i->pipe;