Messages in this thread Patch in this message | | | From | Greg Kroah-Hartman <> | Subject | [PATCH 4.9 08/87] EDAC, amd64: Add x86cpuid sanity check during init | Date | Mon, 13 Nov 2017 13:55:25 +0100 |
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4.9-stable review patch. If anyone has any objections, please let me know.
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From: Yazen Ghannam <Yazen.Ghannam@amd.com>
[ Upstream commit 1bd9900b8301fc505f032c90ea487824cf824e99 ]
Match one of the devices in amd64_cpuids[] before loading the module. This is an additional sanity check against users trying to load amd64_edac_mod on unsupported systems.
Signed-off-by: Yazen Ghannam <Yazen.Ghannam@amd.com> Cc: linux-edac <linux-edac@vger.kernel.org> Link: http://lkml.kernel.org/r/1485537863-2707-9-git-send-email-Yazen.Ghannam@amd.com [ Get rid of err_ret label, make it a bit more readable this way. ] Signed-off-by: Borislav Petkov <bp@suse.de>
Signed-off-by: Sasha Levin <alexander.levin@verizon.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> --- drivers/edac/amd64_edac.c | 6 ++++-- drivers/edac/amd64_edac.h | 1 + 2 files changed, 5 insertions(+), 2 deletions(-)
--- a/drivers/edac/amd64_edac.c +++ b/drivers/edac/amd64_edac.c @@ -2984,8 +2984,11 @@ static int __init amd64_edac_init(void) int err = -ENODEV; int i; + if (!x86_match_cpu(amd64_cpuids)) + return -ENODEV; + if (amd_cache_northbridges() < 0) - goto err_ret; + return -ENODEV; opstate_init(); @@ -3025,7 +3028,6 @@ err_free: kfree(ecc_stngs); ecc_stngs = NULL; -err_ret: return err; } --- a/drivers/edac/amd64_edac.h +++ b/drivers/edac/amd64_edac.h @@ -16,6 +16,7 @@ #include <linux/slab.h> #include <linux/mmzone.h> #include <linux/edac.h> +#include <asm/cpu_device_id.h> #include <asm/msr.h> #include "edac_core.h" #include "mce_amd.h"
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