Unverified Commit 7f4b6a59 authored Jul 11, 2024 by openeuler-ci-bot Committed by Gitee Jul 11, 2024

!9610 rcu: Fix buffer overflow in print_cpu_stall_info()

Merge Pull Request from: @ci-robot 
 
PR sync from: Yu Liao <liaoyu15@huawei.com>
https://mailweb.openeuler.org/hyperkitty/list/kernel@openeuler.org/message/GNGDUG4JCQPUMPUVMF5LAEL67S37SHYR/ 
 
https://gitee.com/src-openeuler/kernel/issues/IA6S9X 
 
Link:https://gitee.com/openeuler/kernel/pulls/9610

 

Reviewed-by: Xiongfeng Wang <wangxiongfeng2@huawei.com>
Signed-off-by: Zhang Peng <zhangpeng362@huawei.com>

parents 3e59d249 95feabe8

kernel/rcu/tree_stall.h

+2 −1

Original line number	Diff line number	Diff line
		@@ -503,7 +503,8 @@ static void print_cpu_stall_info(int cpu)
		rcu_dynticks_in_eqs(rcu_dynticks_snap(cpu));
		rcuc_starved = rcu_is_rcuc_kthread_starving(rdp, &j);
		if (rcuc_starved)
		sprintf(buf, " rcuc=%ld jiffies(starved)", j);
		// Print signed value, as negative values indicate a probable bug.
		snprintf(buf, sizeof(buf), " rcuc=%ld jiffies(starved)", j);
		pr_err("\t%d-%c%c%c%c: (%lu %s) idle=%04x/%ld/%#lx softirq=%u/%u fqs=%ld%s%s\n",
		cpu,
		"O."[!!cpu_online(cpu)],