linux-kernel - Re: [PATCH 3/3] KVM: x86 emulator: trap and propagate #DE from DIV and IDIV

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [day] [month] [year] [list]

Date:	Thu, 26 Aug 2010 11:23:49 +0300
From:	Avi Kivity <avi@...hat.com>
To:	Marcelo Tosatti <mtosatti@...hat.com>
CC:	x86@...nel.org, kvm@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH 3/3] KVM: x86 emulator: trap and propagate #DE from DIV
 and IDIV

  On 08/26/2010 12:05 AM, Marcelo Tosatti wrote:
>
>> @@ -3363,7 +3374,7 @@ special_insn:
>>   		break;
>>   	case 0xf6 ... 0xf7:	/* Grp3 */
>>   		if (emulate_grp3(ctxt, ops) != X86EMUL_CONTINUE)
>> -			goto cannot_emulate;
>> +			goto done;
>>   		break;
> Must assign rc to emulate_grp3() retval.

While there's not much difference between X86EMUL_PROPAGATE_FAULT and 
X86EMUL_CONTINUE, it's bad form to break things internally.  I'll fix 
and repost.

-- 
error compiling committee.c: too many arguments to function

--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/