From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Subject: Patch "sched: Fix crash in sched_init_numa()" has been added to the 4.3-stable tree To: raghavendra.kt@linux.vnet.ibm.com,anton@samba.org,benh@kernel.crashing.org,gkurz@linux.vnet.ibm.com,grant.likely@linaro.org,gregkh@linuxfoundation.org,jstancek@redhat.com,linux-mm@kvack.org,linuxppc-dev@lists.ozlabs.org,mingo@kernel.org,mpe@ellerman.id.au,nikunj@linux.vnet.ibm.com,paulus@samba.org,peterz@infradead.org,vdavydov@parallels.com Cc: , From: Date: Sun, 14 Feb 2016 13:04:29 -0800 Message-ID: <1455483869147137@kroah.com> MIME-Version: 1.0 Content-Type: text/plain; charset=ANSI_X3.4-1968 Content-Transfer-Encoding: 8bit Sender: owner-linux-mm@kvack.org List-ID: This is a note to let you know that I've just added the patch titled sched: Fix crash in sched_init_numa() to the 4.3-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: sched-fix-crash-in-sched_init_numa.patch and it can be found in the queue-4.3 subdirectory. If you, or anyone else, feels it should not be added to the stable tree, please let know about it. >>From 9c03ee147193645be4c186d3688232fa438c57c7 Mon Sep 17 00:00:00 2001 From: Raghavendra K T Date: Sat, 16 Jan 2016 00:31:23 +0530 Subject: sched: Fix crash in sched_init_numa() From: Raghavendra K T commit 9c03ee147193645be4c186d3688232fa438c57c7 upstream. The following PowerPC commit: c118baf80256 ("arch/powerpc/mm/numa.c: do not allocate bootmem memory for non existing nodes") avoids allocating bootmem memory for non existent nodes. But when DEBUG_PER_CPU_MAPS=y is enabled, my powerNV system failed to boot because in sched_init_numa(), cpumask_or() operation was done on unallocated nodes. Fix that by making cpumask_or() operation only on existing nodes. [ Tested with and w/o DEBUG_PER_CPU_MAPS=y on x86 and PowerPC. ] Reported-by: Jan Stancek Tested-by: Jan Stancek Signed-off-by: Raghavendra K T Cc: Cc: Cc: Cc: Cc: Cc: Cc: Cc: Cc: Cc: Cc: Link: http://lkml.kernel.org/r/1452884483-11676-1-git-send-email-raghavendra.kt@linux.vnet.ibm.com Signed-off-by: Ingo Molnar Signed-off-by: Greg Kroah-Hartman --- kernel/sched/core.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) --- a/kernel/sched/core.c +++ b/kernel/sched/core.c @@ -6678,7 +6678,7 @@ static void sched_init_numa(void) sched_domains_numa_masks[i][j] = mask; - for (k = 0; k < nr_node_ids; k++) { + for_each_node(k) { if (node_distance(j, k) > sched_domains_numa_distance[i]) continue; Patches currently in stable-queue which might be from raghavendra.kt@linux.vnet.ibm.com are queue-4.3/sched-fix-crash-in-sched_init_numa.patch -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@kvack.org. For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: email@kvack.org