copy_oldmem_kernel() - WRITE is "data source", not destination

[ Upstream commit 0e1e4a2238d465199e8f11eb7a779bcb224a0505 ]

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Stable-dep-of: 6dd88fd59da8 ("vhost-scsi: unbreak any layout for response")
Signed-off-by: Sasha Levin <sashal@kernel.org>

diff --git a/arch/s390/kernel/crash_dump.c b/arch/s390/kernel/crash_dump.c
index e4ef67e..a19a276 100644 (file)
--- a/arch/s390/kernel/crash_dump.c
+++ b/arch/s390/kernel/crash_dump.c
@@ -153,7 +153,7 @@ int copy_oldmem_kernel(void *dst, unsigned long src, size_t count)
 
        kvec.iov_base = dst;
        kvec.iov_len = count;
-       iov_iter_kvec(&iter, WRITE, &kvec, 1, count);
+       iov_iter_kvec(&iter, READ, &kvec, 1, count);
        if (copy_oldmem_iter(&iter, src, count) < count)
                return -EFAULT;
        return 0;