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  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:	Mon, 17 Feb 2014 13:26:20 -0600
From:	Aravind Gopalakrishnan <>
To:	Borislav Petkov <>
CC:	<>, <>,
Subject: Re: [PATCH] EDAC, MCE, AMD: Fix code to prevent NULL dereference

On 2/17/2014 12:27 PM, Borislav Petkov wrote:
> On Mon, Feb 17, 2014 at 11:49:51AM -0600, Aravind Gopalakrishnan wrote:
>> If MCE decoding support does not exist for a particular family/model,
>> and if one tries to inject errors using mce_amd_inj module, it leads
>> to kernel OOPS. Especially if we inject errors to MC0, MC1, MC2 banks.
> Well, we shouldn't even be loading the module on unsupported hw, i.e.,
> something like that:
>   	if (c->x86_vendor != X86_VENDOR_AMD)
> -		return 0;
> +		return -ENODEV;
>   	if (c->x86 < 0xf || c->x86 > 0x16)
> -		return 0;
> +		return -ENODEV;
Ah. you are right. (I had tested against different family/model checks 
that happen to throw NULL dereference)
You can ignore the patch.

Apologies for the trouble.


To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to
More majordomo info at
Please read the FAQ at

Powered by blists - more mailing lists