| Message ID | 1455483869147137@kroah.com (mailing list archive) |
|---|---|
| State | Not Applicable |
| Headers | show |
--- 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;
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 <stable@vger.kernel.org> know about it. From 9c03ee147193645be4c186d3688232fa438c57c7 Mon Sep 17 00:00:00 2001 From: Raghavendra K T <raghavendra.kt@linux.vnet.ibm.com> Date: Sat, 16 Jan 2016 00:31:23 +0530 Subject: sched: Fix crash in sched_init_numa() From: Raghavendra K T <raghavendra.kt@linux.vnet.ibm.com> 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 <jstancek@redhat.com> Tested-by: Jan Stancek <jstancek@redhat.com> Signed-off-by: Raghavendra K T <raghavendra.kt@linux.vnet.ibm.com> Cc: <gkurz@linux.vnet.ibm.com> Cc: <grant.likely@linaro.org> Cc: <nikunj@linux.vnet.ibm.com> Cc: <vdavydov@parallels.com> Cc: <linuxppc-dev@lists.ozlabs.org> Cc: <linux-mm@kvack.org> Cc: <peterz@infradead.org> Cc: <benh@kernel.crashing.org> Cc: <paulus@samba.org> Cc: <mpe@ellerman.id.au> Cc: <anton@samba.org> Link: http://lkml.kernel.org/r/1452884483-11676-1-git-send-email-raghavendra.kt@linux.vnet.ibm.com Signed-off-by: Ingo Molnar <mingo@kernel.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> --- kernel/sched/core.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) 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