a7y18lte-ubports/android_kernel_samsung_universal7885
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity
e862efec72
android_kernel_samsung_univ.../kernel/sched
History
Raghavendra K T a800cbddbc sched: Fix crash in sched_init_numa() 
commit 9c03ee147193645be4c186d3688232fa438c57c7 upstream.

The following PowerPC commit:

  c118baf802 ("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>
2016-02-17 12:31:02 -08:00
..
auto_group.c
auto_group.h
clock.c treewide: Remove old email address 2015-11-23 09:44:58 +01:00
completion.c
core.c sched: Fix crash in sched_init_numa() 2016-02-17 12:31:02 -08:00
cpuacct.c
cpuacct.h
cpudeadline.c
cpudeadline.h
cpupri.c
cpupri.h
cputime.c sched/cputime: Fix invalid gtime in proc 2015-12-04 10:18:49 +01:00
deadline.c
debug.c
fair.c sched/fair: Fix multiplication overflow on 32-bit systems 2016-01-06 11:01:05 +01:00
features.h
idle_task.c
idle.c
loadavg.c
Makefile
rt.c sched/rt: Hide the push_irq_work_func() declaration 2015-11-23 09:25:08 +01:00
sched.h sched/core: Better document the try_to_wake_up() barriers 2015-12-04 10:26:42 +01:00
stats.c
stats.h
stop_task.c
wait.c sched/wait: Fix the signal handling fix 2015-12-13 14:30:59 -08:00