Patch "EDAC: i7core, sb_edac: Don't return NOTIFY_BAD from mce_decoder callback" has been added to the 4.4-stable tree

Patch "EDAC: i7core, sb_edac: Don't return NOTIFY_BAD from mce_decoder callback" has been added to the 4.4-stable tree

[gregkh]

This is a note to let you know that I've just added the patch titled

    EDAC: i7core, sb_edac: Don't return NOTIFY_BAD from mce_decoder callback

to the 4.4-stable tree which can be found at:
    http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary

The filename of the patch is:
     edac-i7core-sb_edac-don-t-return-notify_bad-from-mce_decoder-callback.patch
and it can be found in the queue-4.4 subdirectory.

If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@vger.kernel.org> know about it.


>From c4fc1956fa31003bfbe4f597e359d751568e2954 Mon Sep 17 00:00:00 2001
From: Tony Luck <tony.luck@intel.com>
Date: Fri, 29 Apr 2016 15:42:25 +0200
Subject: EDAC: i7core, sb_edac: Don't return NOTIFY_BAD from mce_decoder callback

From: Tony Luck <tony.luck@intel.com>

commit c4fc1956fa31003bfbe4f597e359d751568e2954 upstream.

Both of these drivers can return NOTIFY_BAD, but this terminates
processing other callbacks that were registered later on the chain.
Since the driver did nothing to log the error it seems wrong to prevent
other interested parties from seeing it. E.g. neither of them had even
bothered to check the type of the error to see if it was a memory error
before the return NOTIFY_BAD.

Signed-off-by: Tony Luck <tony.luck@intel.com>
Acked-by: Aristeu Rozanski <aris@redhat.com>
Acked-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
Cc: linux-edac <linux-edac@vger.kernel.org>
Link: http://lkml.kernel.org/r/72937355dd92318d2630979666063f8a2853495b.1461864507.git.tony.luck@intel.com
Signed-off-by: Borislav Petkov <bp@suse.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

---
 drivers/edac/i7core_edac.c |    2 +-
 drivers/edac/sb_edac.c     |    2 +-
 2 files changed, 2 insertions(+), 2 deletions(-)

--- a/drivers/edac/i7core_edac.c
+++ b/drivers/edac/i7core_edac.c
@@ -1866,7 +1866,7 @@ static int i7core_mce_check_error(struct
 
 	i7_dev = get_i7core_dev(mce->socketid);
 	if (!i7_dev)
-		return NOTIFY_BAD;
+		return NOTIFY_DONE;
 
 	mci = i7_dev->mci;
 	pvt = mci->pvt_info;
--- a/drivers/edac/sb_edac.c
+++ b/drivers/edac/sb_edac.c
@@ -2254,7 +2254,7 @@ static int sbridge_mce_check_error(struc
 
 	mci = get_mci_for_node_id(mce->socketid);
 	if (!mci)
-		return NOTIFY_BAD;
+		return NOTIFY_DONE;
 	pvt = mci->pvt_info;
 
 	/*


Patches currently in stable-queue which might be from tony.luck@intel.com are

queue-4.4/x86-edac-sb_edac.c-repair-damage-introduced-when-fixing-channel-address.patch
queue-4.4/x86-mce-avoid-using-object-after-free-in-genpool.patch
queue-4.4/edac-i7core-sb_edac-don-t-return-notify_bad-from-mce_decoder-callback.patch