Re: WARN_ON_ONCE in fs/iomap.c:993

[Dave Jones]

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