From: Andi Kleen <andi@firstfloor.org>
To: linux-kvm@vger.kernel.org, avi@redhat.com, hpa@zytor.com
Cc: linux-kernel@vger.kernel.org
Subject: fyi: gcc33-hammer crashes when compiling kvm emulate.c
Date: Tue, 26 Oct 2010 14:38:28 +0200 [thread overview]
Message-ID: <20101026123828.GA30434@basil.fritz.box> (raw)
Hi,
While doing a test run with the minimum supported compiler
I found:
An old gcc 3.3-hammer segfaults when compiling the current KVM
emulate.c (or rather in x86_emulate_insns) on x86-64.
The compiler goes into an endless recursion in validate_rtx and then
eventually overflows the stack and dies.
I minimized a test case, but didn't find a workaround
(minimized test case http://halobates.de/emulate-min.i)
My guess it's related to some of the inline assembler uses.
This might be an excuse to bump the minimum compiler version again.
-andi
--
ak@linux.intel.com -- Speaking for myself only.
next reply other threads:[~2010-10-26 12:38 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-10-26 12:38 Andi Kleen [this message]
2010-10-26 16:34 ` fyi: gcc33-hammer crashes when compiling kvm emulate.c H. Peter Anvin
2010-10-26 16:37 ` Andi Kleen
2010-10-26 16:46 ` H. Peter Anvin
2010-10-26 17:01 ` Andi Kleen
2010-10-26 18:19 ` H. Peter Anvin
2010-10-26 20:27 ` Andi Kleen
2010-10-26 20:37 ` H. Peter Anvin
2010-10-27 10:50 ` Avi Kivity
2010-10-27 17:00 ` Andi Kleen
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