Unverified Commit 6a1dd688 authored by openeuler-ci-bot's avatar openeuler-ci-bot Committed by Gitee
Browse files

!12667 randomize_kstack: Improve entropy diffusion 

Merge Pull Request from: @ci-robot 
 
PR sync from: Gu Bowen <gubowen5@huawei.com>
https://mailweb.openeuler.org/hyperkitty/list/kernel@openeuler.org/message/AG2Y6QCCTMJX6MSUWB5I4VN7JBTQXTRY/ 
 
https://gitee.com/openeuler/kernel/issues/IB0K55 
 
Link:https://gitee.com/openeuler/kernel/pulls/12667

 

Reviewed-by: default avatarYang Yingliang <yangyingliang@huawei.com>
Signed-off-by: default avatarYang Yingliang <yangyingliang@huawei.com>
parents 339c94c0 1e9283bc

include/linux/randomize_kstack.h

+1 −1
Original line number Diff line number Diff line
@@ -47,7 +47,7 @@ void *__builtin_alloca(size_t size); 
	if (static_branch_maybe(CONFIG_RANDOMIZE_KSTACK_OFFSET_DEFAULT,	\

				&randomize_kstack_offset)) {		\

		u32 offset = raw_cpu_read(kstack_offset);		\

		offset ^= (rand);					\

		offset = ror32(offset, 5) ^ (rand);			\

		raw_cpu_write(kstack_offset, offset);			\

	}								\

} while (0)