linux-kernel - Re: selftests: gpio: crash on arm64

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Date:   Thu, 9 Mar 2023 19:50:29 +0200
From:   Andy Shevchenko <andriy.shevchenko@...ux.intel.com>
To:     Naresh Kamboju <naresh.kamboju@...aro.org>
Cc:     "open list:GPIO SUBSYSTEM" <linux-gpio@...r.kernel.org>,
        Linux-Next Mailing List <linux-next@...r.kernel.org>,
        open list <linux-kernel@...r.kernel.org>,
        lkft-triage@...ts.linaro.org,
        "open list:KERNEL SELFTEST FRAMEWORK" 
        <linux-kselftest@...r.kernel.org>, linux-mm <linux-mm@...ck.org>,
        Arnd Bergmann <arnd@...db.de>,
        Anders Roxell <anders.roxell@...aro.org>,
        Shuah Khan <shuah@...nel.org>,
        Linus Walleij <linus.walleij@...aro.org>,
        Bartosz Golaszewski <brgl@...ev.pl>
Subject: Re: selftests: gpio: crash on arm64

On Thu, Mar 09, 2023 at 09:33:29PM +0530, Naresh Kamboju wrote:
> Following kernel warnings and crash notices on arm64 Rpi4 device while
> running selftests: gpio on Linux mainline 6.3.0-rc1 kernel and Linux next.
> 
> Reported-by: Linux Kernel Functional Testing <lkft@...aro.org>

...

> [   61.177432]  *** DEADLOCK ***
> [   61.177432]
> [   61.177434] 3 locks held by modprobe/510:
> [   61.177436] #0: ffff000040000698 (&n->list_lock){-.-.}-{2:2}, at:
> get_partial_node.part.0 (mm/slub.c:2271)
> [   61.177448] #1: ffff80000b227f18 (console_lock){+.+.}-{0:0}, at:
> vprintk_emit (kernel/printk/printk.c:1936 kernel/printk/printk.c:2315)
> [   61.177460] #2: ffff80000b228388 (console_srcu){....}-{0:0}, at:
> console_flush_all (include/linux/srcu.h:200 kernel/printk/printk.c:290
> kernel/printk/printk.c:2934)

How is it related to the GPIO?
Can you bisect if it's a regression somewhere?

-- 
With Best Regards,
Andy Shevchenko