From: Al Viro <viro@zeniv.linux.org.uk>
Date: Thu, 15 Sep 2022 22:55:18 +0000 (-0400)
Subject: [s390] copy_oldmem_kernel() - WRITE is "data source", not destination
X-Git-Tag: io_uring-6.2-2022-12-19~73^2~9
X-Git-Url: https://git.kernel.dk/?a=commitdiff_plain;h=0e1e4a2238d465199e8f11eb7a779bcb224a0505;p=linux-2.6-block.git

[s390] copy_oldmem_kernel() - WRITE is "data source", not destination

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
---

diff --git a/arch/s390/kernel/crash_dump.c b/arch/s390/kernel/crash_dump.c
index dd74fe664ed1..7ad7f20320b9 100644
--- 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;