linux-kernel - Re: [PATCH 1/3] x86: allow kernel exception fixup for divide errors (#DE)

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

Date:	Tue, 24 Aug 2010 14:39:58 +0300
From:	Avi Kivity <avi@...hat.com>
To:	Brian Gerst <brgerst@...il.com>
CC:	x86@...nel.org, kvm@...r.kernel.org,
	Marcelo Tosatti <mtosatti@...hat.com>,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH 1/3] x86: allow kernel exception fixup for divide errors
 (#DE)

  On 08/24/2010 02:22 PM, Brian Gerst wrote:
>
>> +dotraplinkage void do_divide_error(struct pt_regs *regs, long error_code)
>> +{
>> +       if (!user_mode_vm(regs)&&  fixup_exception(regs))
>> +               return;
>> +       do_divide_error_user(regs, error_code);
>> +}
>> +
>>   #ifdef CONFIG_X86_64
>>   /* Runs on IST stack */
>>   dotraplinkage void do_stack_segment(struct pt_regs *regs, long error_code)
> Kernel mode exceptions should already be handled by do_trap().  This
> is unnecessary.

Correct.  Please ignore this patch.  I've verified that the other two 
work without it.

-- 
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/