!687 [HUST CSE] fix a use-after-free bug in uncore_pci_remove()

Merge Pull Request from: @ihopenot 
 
https://gitee.com/openeuler/kernel/blob/openEuler-1.0-LTS/arch/x86/events/zhaoxin/uncore.c#L1689
released the variable 'box'，
however https://gitee.com/openeuler/kernel/blob/openEuler-1.0-LTS/arch/x86/events/zhaoxin/uncore.c#L1691
dereferenced the freed memory 'box'（box->pmu->type->name)，resulting use-after-free bug.
This bug can be fixed by defining variable 'name' to temporarily store the value of
box->pmu->type->name，and replacing 'box->pmu->type->name' in the condition check
at L1691 with 'name'. 
 
Link:https://gitee.com/openeuler/kernel/pulls/687

 

Reviewed-by: Zheng Zengkai <zhengzengkai@huawei.com>
Signed-off-by: Zheng Zengkai <zhengzengkai@huawei.com>