From fe629761087718c69d593887c80964f70df4d0dd Mon Sep 17 00:00:00 2001 From: Miklos Szeredi Date: Wed, 24 Apr 2019 17:05:06 +0200 Subject: [PATCH] fuse: fix writepages on 32bit commit 9de5be06d0a89ca97b5ab902694d42dfd2bb77d2 upstream. Writepage requests were cropped to i_size & 0xffffffff, which meant that mmaped writes to any file larger than 4G might be silently discarded. Fix by storing the file size in a properly sized variable (loff_t instead of size_t). Reported-by: Antonio SJ Musumeci Fixes: 6eaf4782eb09 ("fuse: writepages: crop secondary requests") Signed-off-by: Miklos Szeredi Signed-off-by: Ben Hutchings --- fs/fuse/file.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/fs/fuse/file.c b/fs/fuse/file.c index 69e471b042a69..9d92f83348d1a 100644 --- a/fs/fuse/file.c +++ b/fs/fuse/file.c @@ -1597,7 +1597,7 @@ __acquires(fc->lock) { struct fuse_conn *fc = get_fuse_conn(inode); struct fuse_inode *fi = get_fuse_inode(inode); - size_t crop = i_size_read(inode); + loff_t crop = i_size_read(inode); struct fuse_req *req; while (fi->writectr >= 0 && !list_empty(&fi->queued_writes)) { -- 2.47.2