Unverified Commit a18e1302 authored by openeuler-ci-bot's avatar openeuler-ci-bot Committed by Gitee
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!8675 [sync] PR-8534: riscv: process: Fix kernel gp leakage 

Merge Pull Request from: @openeuler-sync-bot 
 

Origin pull request: 
https://gitee.com/openeuler/kernel/pulls/8534 
 
PR sync from: Guo Mengqi <guomengqi3@huawei.com>
https://mailweb.openeuler.org/hyperkitty/list/kernel@openeuler.org/message/G2DM5PE5UFTKRCUDVVE2NADUTFPTFL5K/ 
 
https://gitee.com/src-openeuler/kernel/issues/I9QG6A 
 
Link:https://gitee.com/openeuler/kernel/pulls/8675

 

Reviewed-by: default avatarWeilong Chen <chenweilong@huawei.com>
Signed-off-by: default avatarYang Yingliang <yangyingliang@huawei.com>
parents d37d966a e671b34a

arch/riscv/kernel/process.c

+0 −3
Original line number Diff line number Diff line
@@ -22,8 +22,6 @@ 
#include <asm/switch_to.h>

#include <asm/thread_info.h>



register unsigned long gp_in_global __asm__("gp");



#ifdef CONFIG_STACKPROTECTOR

#include <linux/stackprotector.h>

unsigned long __stack_chk_guard __read_mostly;
@@ -115,7 +113,6 @@ int copy_thread(unsigned long clone_flags, unsigned long usp, unsigned long arg, 
	if (unlikely(p->flags & (PF_KTHREAD | PF_IO_WORKER))) {

		/* Kernel thread */

		memset(childregs, 0, sizeof(struct pt_regs));

		childregs->gp = gp_in_global;

		/* Supervisor/Machine, irqs on: */

		childregs->status = SR_PP | SR_PIE;