Re: [PATCH] x86/sgx: Avoid softlockup from sgx_vepc_release

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On Sun, 13 Aug 2023 23:37:14 -0500, Jack Wang <jinpu.wang@xxxxxxxxx> wrote:

We hit softlocup with following call trace:
 kernel: [ 2041.288210] Call Trace:
kernel: [ 2041.288213]  <IRQ>
kernel: [ 2041.288216]  ? watchdog_timer_fn+0x1b4/0x210
kernel: [ 2041.288222]  ? lockup_detector_update_enable+0x50/0x50
kernel: [ 2041.288225]  ? __hrtimer_run_queues+0x127/0x280
kernel: [ 2041.288230]  ? hrtimer_interrupt+0xfc/0x210
kernel: [ 2041.288233]  ? __sysvec_apic_timer_interrupt+0x59/0xd0
kernel: [ 2041.288237]  ? sysvec_apic_timer_interrupt+0x6d/0x90
kernel: [ 2041.288242]  </IRQ>
kernel: [ 2041.288242]  <TASK>
kernel: [ 2041.288244]  ? asm_sysvec_apic_timer_interrupt+0x16/0x20
kernel: [ 2041.288250]  xa_erase+0x21/0xb0
kernel: [ 2041.288256]  ? sgx_free_epc_page+0x20/0x50
kernel: [ 2041.288260]  sgx_vepc_release+0x75/0x220
kernel: [ 2041.288263]  __fput+0x89/0x250
kernel: [ 2041.288269]  task_work_run+0x59/0x90
kernel: [ 2041.288275]  do_exit+0x337/0x9a0


If you would spin another version, please remove columns of the time stamp and "kernel"
Otherwise,

Acked-by: Haitao Huang <haitao.huang@xxxxxxxxxxxxxxx>

Thanks
Haitao



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