[PATCH v2] riscv: VMAP_STACK overflow detection thread-safe

Deepak Gupta debug at rivosinc.com
Fri Nov 25 12:13:26 PST 2022


On Thu, Nov 24, 2022 at 05:53:45PM +0800, Guo Ren wrote:
>On Thu, Nov 24, 2022 at 5:48 PM Deepak Gupta <debug at rivosinc.com> wrote:
>>
>> index df9444397908..a7da051159cf 100644
>> --- a/arch/riscv/kernel/asm-offsets.c
>> +++ b/arch/riscv/kernel/asm-offsets.c
>> @@ -38,6 +38,7 @@ void asm_offsets(void)
>>         OFFSET(TASK_TI_KERNEL_SP, task_struct, thread_info.kernel_sp);
>>         OFFSET(TASK_TI_USER_SP, task_struct, thread_info.user_sp);
>>
>> +       OFFSET(TASK_TI_CPU_NUM, task_struct, thread_info.cpu);
>Why not TASK_TI_CPU ?
No specific reason.
>
>>         OFFSET(TASK_THREAD_F0,  task_struct, thread.fstate.f[0]);
>>         OFFSET(TASK_THREAD_F1,  task_struct, thread.fstate.f[1]);
>>         OFFSET(TASK_THREAD_F2,  task_struct, thread.fstate.f[2]);



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