On Mon, Sep 18, 2017 at 08:26:05PM +0530, Abdul Haleem wrote:

Hi,

A warning is triggered from:

file fs/iomap.c in function iomap_dio_rw

    if (ret)
        goto out_free_dio;

    ret = invalidate_inode_pages2_range(mapping,
            start >> PAGE_SHIFT, end >> PAGE_SHIFT);

quoted

quoted

 WARN_ON_ONCE(ret);

    ret = 0;

    inode_dio_begin(inode);

This is expected and an indication of a problematic workload - which
may be triggered by a fuzzer.