diff options
| author | Heiko Carstens <hca@linux.ibm.com> | 2021-02-17 07:13:02 +0100 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2021-03-17 16:07:20 +0100 |
| commit | c0b91b440b6955cd873816bb124ee1c439a68634 (patch) | |
| tree | 4f4853761b6554319ec2226d56bf74cc32e7bc6f /arch | |
| parent | 4e45b4c914bf4aef56b91a42404ca1f70d48e8d4 (diff) | |
s390/smp: __smp_rescan_cpus() - move cpumask away from stack
[ Upstream commit 62c8dca9e194326802b43c60763f856d782b225c ]
Avoid a potentially large stack frame and overflow by making
"cpumask_t avail" a static variable. There is no concurrent
access due to the existing locking.
Signed-off-by: Heiko Carstens <hca@linux.ibm.com>
Signed-off-by: Vasily Gorbik <gor@linux.ibm.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Diffstat (limited to 'arch')
| -rw-r--r-- | arch/s390/kernel/smp.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/arch/s390/kernel/smp.c b/arch/s390/kernel/smp.c index f113fcd781d8..486f0d4f9aee 100644 --- a/arch/s390/kernel/smp.c +++ b/arch/s390/kernel/smp.c @@ -738,7 +738,7 @@ static int smp_add_core(struct sclp_core_entry *core, cpumask_t *avail, static int __smp_rescan_cpus(struct sclp_core_info *info, bool early) { struct sclp_core_entry *core; - cpumask_t avail; + static cpumask_t avail; bool configured; u16 core_id; int nr, i; |