From: Fred Isaman <fred.isaman@gmail.com>
Date: Fri, 14 Apr 2017 18:24:28 +0000 (-0400)
Subject: NFS: Fix use after free in write error path
X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=1f84ccdf37d0db3a70714d02d51b0b6d45887fb8;p=GitHub%2FLineageOS%2Fandroid_kernel_motorola_exynos9610.git

NFS: Fix use after free in write error path

Signed-off-by: Fred Isaman <fred.isaman@gmail.com>
Fixes: 0bcbf039f6b2b ("nfs: handle request add failure properly")
Cc: stable@vger.kernel.org # v4.5+
Signed-off-by: Trond Myklebust <trond.myklebust@primarydata.com>
---

diff --git a/fs/nfs/write.c b/fs/nfs/write.c
index bdfe5a7c5874..e0bccbefbc9e 100644
--- a/fs/nfs/write.c
+++ b/fs/nfs/write.c
@@ -561,9 +561,9 @@ static void nfs_write_error_remove_page(struct nfs_page *req)
 {
 	nfs_unlock_request(req);
 	nfs_end_page_writeback(req);
-	nfs_release_request(req);
 	generic_error_remove_page(page_file_mapping(req->wb_page),
 				  req->wb_page);
+	nfs_release_request(req);
 }
 
 /*