Re: [linux-next][XFS][trinity] WARNING: CPU: 32 PID: 31369 at fs/iomap.c:993

From	Christoph Hellwig <hch@lst.de>
Newsgroups	linux.kernel
Subject	Re: [linux-next][XFS][trinity] WARNING: CPU: 32 PID: 31369 at fs/iomap.c:993
Date	2017-09-18 17:30 +0200
Message-ID	<ur69I-82d-9@gated-at.bofh.it> (permalink)
References	<ur5GG-7D9-31@gated-at.bofh.it>
Organization	linux.* mail to news gateway

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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);
> >>  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.

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Re: [linux-next][XFS][trinity] WARNING: CPU: 32 PID: 31369 at         fs/iomap.c:993 Christoph Hellwig <hch@lst.de> - 2017-09-18 17:30 +0200
  Re: [linux-next][XFS][trinity] WARNING: CPU: 32 PID: 31369 at  fs/iomap.c:993 Jens Axboe <axboe@kernel.dk> - 2017-09-18 17:30 +0200
    Re: [linux-next][XFS][trinity] WARNING: CPU: 32 PID: 31369 at         fs/iomap.c:993 Christoph Hellwig <hch@lst.de> - 2017-09-18 17:40 +0200
      Re: [linux-next][XFS][trinity] WARNING: CPU: 32 PID: 31369 at  fs/iomap.c:993 Al Viro <viro@ZenIV.linux.org.uk> - 2017-09-18 17:50 +0200
        Re: [linux-next][XFS][trinity] WARNING: CPU: 32 PID: 31369 at  fs/iomap.c:993 Jens Axboe <axboe@kernel.dk> - 2017-09-18 18:00 +0200
          Re: [linux-next][XFS][trinity] WARNING: CPU: 32 PID: 31369 at  fs/iomap.c:993 Dave Chinner <david@fromorbit.com> - 2017-09-19 00:00 +0200
    Re: [linux-next][XFS][trinity] WARNING: CPU: 32 PID: 31369 at  fs/iomap.c:993 Dave Chinner <david@fromorbit.com> - 2017-09-18 23:40 +0200
      Re: [linux-next][XFS][trinity] WARNING: CPU: 32 PID: 31369 at  fs/iomap.c:993 Eric Sandeen <sandeen@sandeen.net> - 2017-09-19 00:10 +0200
        Re: [linux-next][XFS][trinity] WARNING: CPU: 32 PID: 31369 at  fs/iomap.c:993 "Darrick J. Wong" <darrick.wong@oracle.com> - 2017-09-19 00:10 +0200
        Re: [linux-next][XFS][trinity] WARNING: CPU: 32 PID: 31369 at  fs/iomap.c:993 Dave Chinner <david@fromorbit.com> - 2017-09-19 00:10 +0200

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