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Subject[PATCH 4/5] percpu_ida: Sanity check initialization parameters
Signed-off-by: Alexander Gordeev <agordeev@redhat.com>
---
lib/percpu_ida.c | 5 +++++
1 files changed, 5 insertions(+), 0 deletions(-)

diff --git a/lib/percpu_ida.c b/lib/percpu_ida.c
index 4adc3e5..1fc89f9 100644
--- a/lib/percpu_ida.c
+++ b/lib/percpu_ida.c
@@ -298,6 +298,11 @@ int __percpu_ida_init(struct percpu_ida *pool, unsigned long nr_tags,
{
unsigned i, cpu, order;

+ if (batch_size > max_size)
+ return -ERANGE;
+ if (!batch_size)
+ return -EINVAL;
+
memset(pool, 0, sizeof(*pool));

init_waitqueue_head(&pool->wait);
--
1.7.7.6

--
Regards,
Alexander Gordeev
agordeev@redhat.com


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