On Mon, Sep 11, 2017 at 06:56:05AM -0400, Shankara Pailoor wrote: > Hi, > > I am fuzzing linux 4.13-rc7 with XFS using syzkaller on x86_64 and I > found the following warning: > > WARNING: CPU: 2 PID: 5391 at fs/iomap.c:993 iomap_dio_rw+0xc79/0xe70 > > Here is a reproducer program: https://pastebin.com/tc014k97 pwrite in one thread, sendfile on another. Same thing trinity has been hitting. See thread "Subject: Re: iov_iter_pipe warning". Dave