linux-kernel - [PATCH 2/2] fs/fuse, splice_write: reduce allocation size.

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-Id: <20180716160344.7015-2-aryabinin@virtuozzo.com>
Date:   Mon, 16 Jul 2018 19:03:44 +0300
From:   Andrey Ryabinin <aryabinin@...tuozzo.com>
To:     Miklos Szeredi <miklos@...redi.hu>
Cc:     linux-fsdevel@...r.kernel.org, linux-kernel@...r.kernel.org,
        Andrey Ryabinin <aryabinin@...tuozzo.com>
Subject: [PATCH 2/2] fs/fuse, splice_write: reduce allocation size.

The 'bufs' array contains 'pipe->buffers' elements, but the
fuse_dev_splice_write() uses only 'pipe->nrbufs' elements.

So reduce the allocation size to 'pipe->nrbufs' elements.

Signed-off-by: Andrey Ryabinin <aryabinin@...tuozzo.com>
---
 fs/fuse/dev.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/fs/fuse/dev.c b/fs/fuse/dev.c
index 74900571546d..39789f070cde 100644
--- a/fs/fuse/dev.c
+++ b/fs/fuse/dev.c
@@ -1944,7 +1944,7 @@ static ssize_t fuse_dev_splice_write(struct pipe_inode_info *pipe,
 	if (!fud)
 		return -EPERM;
 
-	bufs = kvmalloc_array(pipe->buffers, sizeof(struct pipe_buffer),
+	bufs = kvmalloc_array(pipe->nrbufs, sizeof(struct pipe_buffer),
 			      GFP_KERNEL);
 	if (!bufs)
 		return -ENOMEM;
-- 
2.16.4