PAGE_SIZE is not guaranteed to be equal to or less than 8 times the
THREAD_SIZE.
E.g. architecture hexagon may have page size 1M and thread size 4096.
This would lead to a division by zero.
Signed-off-by: Heinrich Schuchardt <xypron.g...@gmx.de>
---
kernel/fork.c | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/kernel/fork.c b/kernel/fork.c
index cf65139..71e2583 100644
--- a/kernel/fork.c
+++ b/kernel/fork.c
@@ -273,7 +273,8 @@ void __init fork_init(unsigned long mempages)
* value: the thread structures can take up at most half
* of memory.
*/
- max_threads = mempages / (8 * THREAD_SIZE / PAGE_SIZE);
+ max_threads = (u64) PAGE_SIZE * (u64) mempages
+ / (u64) THREAD_SIZE / 8UL;
/*
* we need to allow at least 20 threads to boot a system
--
2.1.4
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