diff options
| author | Miklos Szeredi <mszeredi@redhat.com> | 2019-04-24 17:05:06 +0200 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2019-06-11 12:23:46 +0200 |
| commit | 73724958d1298f8b7e1ef82598d8dc5099a1bff8 (patch) | |
| tree | 45c1fdac94d9a5f41dac600b97f171bd0b48bfc0 | |
| parent | 12060f4740ca62851b0d9efb6fe72a5691b458d9 (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 d40c2451487c..3ba8922e0f86 100644 --- a/fs/fuse/file.c +++ b/fs/fuse/file.c @@ -1533,7 +1533,7 @@ __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)) { |