linux-kernel - Re: [PATCH] staging: lustre: lprocfs_status.h: fix sparse error: symbol redeclared with different type

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Message-ID: <20161007035532.GC16832@kroah.com>
Date:   Fri, 7 Oct 2016 05:55:32 +0200
From:   Greg KH <gregkh@...uxfoundation.org>
To:     Samuele Baisi <ciccio87@...il.com>
Cc:     devel@...verdev.osuosl.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH] staging: lustre: lprocfs_status.h: fix sparse error:
 symbol redeclared with different type

On Thu, Oct 06, 2016 at 06:52:07PM +0200, Samuele Baisi wrote:
> drivers/staging/lustre/lustre/obdclass/lprocfs_status.c:1554:5: error:
> symbol 'lprocfs_wr_root_squash' redeclared with different type (originally
> declared at drivers/staging/lustre/lustre/obdclass/../include/lprocfs_status.h:704)
> - incompatible argument 1 (different address spaces)
> 
> drivers/staging/lustre/lustre/obdclass/lprocfs_status.c:1618:5: error:
> symbol 'lprocfs_wr_nosquash_nids' redeclared with different type (originally
> declared at drivers/staging/lustre/lustre/obdclass/../include/lprocfs_status.h:706)
> - incompatible argument 1 (different address spaces)
> 
> Added __user annotation to the header definitions arguments (which are
> indeed userspace buffers).

Are they really?  Have you tested this?  The last time this was looked
at, it was a non-trivial problem...

And any reason you didn't cc the lustre maintainers with this change?
If you think it is correct, please resend it with the testing
information and cc: them.

thanks,

greg k-h