linux-kernel - Re: [PATCH 09/21] amd64_edac: assign DRAM chip select base and mask in a family-specific way

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:	Mon, 04 May 2009 18:59:14 -0300
From:	Mauro Carvalho Chehab <mchehab@...hat.com>
To:	Borislav Petkov <borislav.petkov@....com>
CC:	akpm@...ux-foundation.org, greg@...ah.com, mingo@...e.hu,
	tglx@...utronix.de, hpa@...or.com, dougthompson@...ssion.com,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH 09/21] amd64_edac: assign DRAM chip select base and mask
 in a family-specific way

Borislav Petkov escreveu:
> +	for (cs = 0; cs < CHIPSELECT_COUNT; cs++) {
> +		reg = K8_DCSB0 + (cs * 4);
> +		err = pci_read_config_dword(pvt->dram_f2_ctl, reg,
> +						&pvt->dcsb0[cs]);
> +		if (err != 0)
> +			debugf0("%s() Reading K8_DCSB0[%d] failed\n",
> +				__func__, cs);
> +
> +		debugf0("  DCSB0[%d]=0x%08x reg: F2x%x\n",
> +			cs, pvt->dcsb0[cs], reg);
>   

Hmm... I suspect that there's a missing else before the debugf0(). If 
you got an error while reading it, you shouldn't be showing the results. 
> +
> +		/* If DCT are NOT ganged, then read in DCT1's base */
> +		if (boot_cpu_data.x86 >= 0x10 && !dct_ganging_enabled(pvt)) {
> +			reg = F10_DCSB1 + (cs * 4);
> +			err = pci_read_config_dword(pvt->dram_f2_ctl, reg,
> +							&pvt->dcsb1[cs]);
> +			if (err != 0)
> +				debugf0("%s() Reading F10_DCSB1[%d] failed\n",
> +					__func__, cs);
> +			debugf0("  DCSB1[%d]=0x%08x reg: F2x%x\n",
> +				cs, pvt->dcsb1[cs], reg);
>   
The same issue here: if you got an error while reading it, you shouldn't 
be showing the results. 

Cheers,
Mauro.
--
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/