Re: KASAN + CPU soft-hotplug = stack-out-of-bounds at cpuinfo_store_cpu

From: Qian Cai
Date: Sat Nov 13 2021 - 01:08:01 EST

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On Fri, Nov 12, 2021 at 11:50:19PM -0500, Qian Cai wrote:
> FYI, running CPU soft-hotplug with KASAN on arm64 defconfig will
> always trigger a stack-out-of-bounds below.

Actually, KASAN is not enough to trigger. It needs some addition
debugging options to reproduce. I'll narrow it down later. Anyway,
this one will reproduce.

http://lsbug.org/tmp/config-bad-14rc1.txt

Next message: Jianqun Xu: "[PATCH] dma-buf: add DMA_BUF_IOCTL_SYNC_PARTIAL support"
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In reply to: Qian Cai: "KASAN + CPU soft-hotplug = stack-out-of-bounds at cpuinfo_store_cpu"
Next in thread: Dmitry Vyukov: "Re: KASAN + CPU soft-hotplug = stack-out-of-bounds at cpuinfo_store_cpu"
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