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| author | Miklos Szeredi <mszeredi@redhat.com> | 2019-04-24 18:05:06 +0300 |
|---|---|---|
| committer | Miklos Szeredi <mszeredi@redhat.com> | 2019-04-24 18:05:06 +0300 |
| commit | 9de5be06d0a89ca97b5ab902694d42dfd2bb77d2 (patch) | |
| tree | 6bee5c6e567702d3c8b98bfed6961a4eb17ae9dc | |
| parent | 085b7755808aa11f78ab9377257e1dad2e6fa4bb (diff) | |
| download | linux-9de5be06d0a89ca97b5ab902694d42dfd2bb77d2.tar.xz | |
fuse: fix writepages on 32bit
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>
| -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 06096b60f1df..5428c81879b2 100644 --- a/fs/fuse/file.c +++ b/fs/fuse/file.c @@ -1586,7 +1586,7 @@ __acquires(fi->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)) { |