Messages in this thread | | | From | thunder.leizhen@huaweicl ... | Subject | [PATCH 0/2] softirq: redefine the type of kernel_stat.softirqs[] as unsigned long | Date | Mon, 24 Jul 2023 21:22:22 +0800 |
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From: Zhen Lei <thunder.leizhen@huawei.com>
The type of member softirqs in structure kernel_stat is unsigned int, its accumulated value can easily overflow. Changing to unsigned long can safely solve the problem on 64-bit processors.
struct kernel_stat { unsigned long irqs_sum; - unsigned int softirqs[NR_SOFTIRQS]; + unsigned long softirqs[NR_SOFTIRQS];
Zhen Lei (2): softirq: fix integer overflow in function show_stat() softirq: redefine the type of kernel_stat.softirqs[] as unsigned long
fs/proc/softirqs.c | 2 +- fs/proc/stat.c | 4 ++-- include/linux/kernel_stat.h | 8 ++++---- kernel/rcu/tree.h | 2 +- kernel/rcu/tree_stall.h | 6 +++--- 5 files changed, 11 insertions(+), 11 deletions(-)
-- 2.25.1
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