diff options
| author | Raghavendra K T <raghavendra.kt@linux.vnet.ibm.com> | 2016-01-15 22:01:23 +0300 |
|---|---|---|
| committer | Ingo Molnar <mingo@kernel.org> | 2016-01-19 10:42:20 +0300 |
| commit | 9c03ee147193645be4c186d3688232fa438c57c7 (patch) | |
| tree | 19a89176131252f5b846687a21a80b6f1961cbf8 /ipc/shm.c | |
| parent | 10a0c0f0595b20efa127a1816670c64a3d0e4965 (diff) | |
| download | linux-9c03ee147193645be4c186d3688232fa438c57c7.tar.xz | |
sched: Fix crash in sched_init_numa()
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>
Diffstat (limited to 'ipc/shm.c')
0 files changed, 0 insertions, 0 deletions