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| author | Heiko Carstens <hca@linux.ibm.com> | 2021-02-17 07:13:02 +0100 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2021-03-17 16:43:46 +0100 |
| commit | 9b2384daf9525492b325ab1310c46f71442b134d (patch) | |
| tree | f466912c37125ba7bf7e12d8dd3a840e1cf5c523 | |
| parent | 105e4f983100d20029bf0afd7c15c4d55cc11b40 (diff) | |
| download | linux-stable-9b2384daf9525492b325ab1310c46f71442b134d.tar.gz linux-stable-9b2384daf9525492b325ab1310c46f71442b134d.tar.bz2 linux-stable-9b2384daf9525492b325ab1310c46f71442b134d.zip | |
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>
| -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 c47bd581a08a..bce678c7179c 100644 --- a/arch/s390/kernel/smp.c +++ b/arch/s390/kernel/smp.c @@ -751,7 +751,7 @@ 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; |