diff options
| author | Miklos Szeredi <mszeredi@redhat.com> | 2019-04-24 17:05:06 +0200 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2019-05-25 18:22:09 +0200 |
| commit | 79d8f6321221468a60c35bea6f897ba64951a781 (patch) | |
| tree | 3358733bbe28481f2ab9d60ba1f51cd7c2afaf9d | |
| parent | 12db517f8a3e261255601ddf18fe6f0d0097c749 (diff) | |
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 <trapexit@spawn.link>
Fixes: 6eaf4782eb09 ("fuse: writepages: crop secondary requests")
Cc: <stable@vger.kernel.org> # v3.13
Signed-off-by: Miklos Szeredi <mszeredi@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
| -rw-r--r-- | fs/fuse/file.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/fs/fuse/file.c b/fs/fuse/file.c index a59c16bd90ac..a201768a95df 100644 --- a/fs/fuse/file.c +++ b/fs/fuse/file.c @@ -1530,7 +1530,7 @@ __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)) { |