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Message-Id: <20170602140743.274b9babba6118bfd12c7a26@linux-foundation.org>
Date: Fri, 2 Jun 2017 14:07:43 -0700
From: Andrew Morton <akpm@...ux-foundation.org>
To: Daniel Micay <danielmicay@...il.com>
Cc: linux-mm@...ck.org, Kees Cook <keescook@...omium.org>,
kernel-hardening@...ts.openwall.com, linux-kernel
<linux-kernel@...r.kernel.org>, Mark Rutland <mark.rutland@....com>, Daniel
Axtens <dja@...ens.net>, Moni Shoua <monis@...lanox.com>, Doug Ledford
<dledford@...hat.com>, Sean Hefty <sean.hefty@...el.com>, Hal Rosenstock
<hal.rosenstock@...il.com>, linux-rdma@...r.kernel.org
Subject: Re: [PATCH v4] add the option of fortified string.h functions
On Fri, 26 May 2017 05:54:04 -0400 Daniel Micay <danielmicay@...il.com> wrote:
> This adds support for compiling with a rough equivalent to the glibc
> _FORTIFY_SOURCE=1 feature, providing compile-time and runtime buffer
> overflow checks for string.h functions when the compiler determines the
> size of the source or destination buffer at compile-time. Unlike glibc,
> it covers buffer reads in addition to writes.
Did we find a bug in drivers/infiniband/sw/rxe/rxe_resp.c?
i386 allmodconfig:
In file included from ./include/linux/bitmap.h:8:0,
from ./include/linux/cpumask.h:11,
from ./include/linux/mm_types_task.h:13,
from ./include/linux/mm_types.h:4,
from ./include/linux/kmemcheck.h:4,
from ./include/linux/skbuff.h:18,
from drivers/infiniband/sw/rxe/rxe_resp.c:34:
In function 'memcpy',
inlined from 'send_atomic_ack.constprop' at drivers/infiniband/sw/rxe/rxe_resp.c:998:2,
inlined from 'acknowledge' at drivers/infiniband/sw/rxe/rxe_resp.c:1026:3,
inlined from 'rxe_responder' at drivers/infiniband/sw/rxe/rxe_resp.c:1286:10:
./include/linux/string.h:309:4: error: call to '__read_overflow2' declared with attribute error: detected read beyond size of object passed as 2nd parameter
__read_overflow2();
If so, can you please interpret this for the infiniband developers?
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