From: Hui Tang tanghui20@huawei.com
hulk inclusion category: feature bugzilla: https://gitee.com/openeuler/kernel/issues/I7BQZ0 CVE: NA
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The WARNING report when run: echo 1 > /sys/fs/cgroup/cpu/cpu.dynamic_affinity_mode
[ 147.276757] WARNING: CPU: 5 PID: 1770 at kernel/cpu.c:326 \ lockdep_assert_cpus_held+0xac/0xd0 [ 147.279670] Kernel panic - not syncing: panic_on_warn set ... [ 147.279670] [ 147.282211] CPU: 5 PID: 1770 Comm: bash Kdump: loaded Not tainted 4.19 [ 147.284796] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996).. [ 147.290963] Call Trace: [ 147.292459] dump_stack+0xc6/0x11e [ 147.294295] ? lockdep_assert_cpus_held+0xa0/0xd0 [ 147.296876] panic+0x1d6/0x46b [ 147.298591] ? refcount_error_report+0x2a5/0x2a5 [ 147.301131] ? kmsg_dump_rewind_nolock+0xde/0xde [ 147.303738] ? sched_clock_cpu+0x18/0x1b0 [ 147.305943] ? __warn+0x1d1/0x210 [ 147.307831] ? lockdep_assert_cpus_held+0xac/0xd0 [ 147.310469] __warn+0x1ec/0x210 [ 147.312271] ? lockdep_assert_cpus_held+0xac/0xd0 [ 147.314838] report_bug+0x1ee/0x2b0 [ 147.316798] fixup_bug.part.4+0x37/0x80 [ 147.318946] do_error_trap+0x21c/0x260 [ 147.321062] ? fixup_bug.part.4+0x80/0x80 [ 147.323253] ? check_preemption_disabled+0x34/0x1f0 [ 147.324886] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 147.326277] ? lockdep_hardirqs_off+0x1cb/0x2b0 [ 147.327505] ? error_entry+0x9a/0x130 [ 147.328523] ? trace_hardirqs_off_caller+0x59/0x1a0 [ 147.329844] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 147.331124] invalid_op+0x14/0x20 [ 147.332057] ? vprintk_func+0x68/0x1a0 [ 147.333082] ? lockdep_assert_cpus_held+0xac/0xd0 [ 147.334355] ? lockdep_assert_cpus_held+0xac/0xd0 [ 147.335624] ? static_key_slow_inc_cpuslocked+0x5a/0x230 [ 147.337079] ? tg_set_dynamic_affinity_mode+0x4f/0x70 [ 147.338444] ? cgroup_file_write+0x471/0x6a0 [ 147.339604] ? cgroup_css.part.4+0x100/0x100 [ 147.340782] ? cgroup_css.part.4+0x100/0x100 [ 147.341943] ? kernfs_fop_write+0x2af/0x430 [ 147.343083] ? kernfs_vma_page_mkwrite+0x230/0x230 [ 147.344401] ? __vfs_write+0xef/0x680 [ 147.345404] ? kernel_read+0x110/0x110
Signed-off-by: Hui Tang tanghui20@huawei.com Reviewed-by: Zhang Qiao zhangqiao22@huawei.com Signed-off-by: Zhang Changzhong zhangchangzhong@huawei.com Signed-off-by: Yipeng Zou zouyipeng@huawei.com --- kernel/sched/fair.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/kernel/sched/fair.c b/kernel/sched/fair.c index 73c0ca42b548..d0b7171cef5e 100644 --- a/kernel/sched/fair.c +++ b/kernel/sched/fair.c @@ -5828,12 +5828,12 @@ struct static_key __smart_grid_used;
static void smart_grid_usage_inc(void) { - static_key_slow_inc_cpuslocked(&__smart_grid_used); + static_key_slow_inc(&__smart_grid_used); }
static void smart_grid_usage_dec(void) { - static_key_slow_dec_cpuslocked(&__smart_grid_used); + static_key_slow_dec(&__smart_grid_used); }
static void tg_update_task_prefer_cpus(struct task_group *tg)