linux-kernel - Re: KASAN + CPU soft-hotplug = stack-out-of-bounds at cpuinfo_store

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Message-ID: <YZJgyve+tQ/+8NDC@qian-HP-Z2-SFF-G5-Workstation>
Date:   Mon, 15 Nov 2021 08:29:46 -0500
From:   Qian Cai <quic_qiancai@...cinc.com>
To:     Dmitry Vyukov <dvyukov@...gle.com>
CC:     Will Deacon <will@...nel.org>,
        Catalin Marinas <catalin.marinas@....com>,
        Mark Rutland <mark.rutland@....com>,
        <linux-arm-kernel@...ts.infradead.org>,
        <linux-kernel@...r.kernel.org>, <kasan-dev@...glegroups.com>,
        "Valentin Schneider" <valentin.schneider@....com>
Subject: Re: KASAN + CPU soft-hotplug = stack-out-of-bounds at
 cpuinfo_store_cpu

On Sat, Nov 13, 2021 at 07:49:39AM +0100, Dmitry Vyukov wrote:
> This may be just a bad format string.
> But I don't see kernel/printk/printk.c:2264 doing any printk on
> next-20211110. What's up with line numbers?

Yeah, it is usual that the line number could be off by a few lines
with that .config. It is still in my TODO to dig into the bottom of it
though.