linux-kernel - [PATCH 0/2] min_t type casting bug fixes

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Message-Id: <20160311062156.131015797@redhat.com>
Date:	Fri, 11 Mar 2016 14:21:56 +0800
From:	dyoung@...hat.com
To:	akpm@...ux-foundation.org, linux-kernel@...r.kernel.org,
	d.hatayama@...fujitsu.com, bhe@...hat.com, vgoyal@...hat.com
Cc:	dyoung@...hat.com, kexec@...ts.infradead.org
Subject: [PATCH 0/2] min_t type casting bug fixes

Hi,

We found a min_t type casting issue in fs/proc/vmcore.c, it uses smaller
type in min_t so that during i386 PAE testing 64bit value was trucated
and then cause saving vmcore failure and BUG() for mmap case.

I introduced new macros min_lt and max_lt to select the larger data type
in x and y. Then use it in 2nd patch.

Any comments are appreciated.

Thanks
Dave