From: "Jiawen Wu" <jiawenwu@trustnetic.com>
To: <brgl@bgdev.pl>
Cc: <andriy.shevchenko@linux.intel.com>,
<bartosz.golaszewski@linaro.org>, <elder@linaro.org>,
<geert+renesas@glider.be>, <linus.walleij@linaro.org>,
<linux-gpio@vger.kernel.org>, <linux-kernel@vger.kernel.org>,
<paulmck@kernel.org>, <warthog618@gmail.com>, <wsa@the-dreams.de>
Subject: Re: [PATCH v3 00/24] gpio: rework locking and object life-time control
Date: Fri, 19 Apr 2024 15:03:54 +0800 [thread overview]
Message-ID: <02a101da9227$bda04cb0$38e0e610$@trustnetic.com> (raw)
Hi Bartosz Golaszewski,
I ran into a kernel crash problem when I pull the latest net-next.git, and
finally it was found that is caused by this patch series merged.
The kernel crashed because I got gpio=0 when I called irq_find_mapping()
and then struct irq_data *d=null, as my driver describes:
int gpio = irq_find_mapping(gc->irq.domain, hwirq);
struct irq_data *d = irq_get_irq_data(gpio);
txgbe_gpio_irq_ack(d);
The deeper positioning is this line in __irq_resolve_mapping().
data = rcu_dereference(domain->revmap[hwirq]);
So, is it the addition of SRCU infrastructure that causes this issue?
Thanks,
Jiawen
next reply other threads:[~2024-04-19 7:05 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2024-04-19 7:03 Jiawen Wu [this message]
2024-04-19 13:27 ` [PATCH v3 00/24] gpio: rework locking and object life-time control Andy Shevchenko
2024-04-19 21:29 ` Bartosz Golaszewski
2024-04-22 8:38 ` Jiawen Wu
-- strict thread matches above, loose matches on Subject: below --
2024-02-08 9:58 Bartosz Golaszewski
2024-02-08 17:43 ` Andy Shevchenko
2024-02-12 10:07 ` Bartosz Golaszewski
[not found] ` <CGME20240213120518eucas1p2d514aac6e6d1e29bbae05f32db6724db@eucas1p2.samsung.com>
2024-02-13 12:05 ` Marek Szyprowski
2024-02-13 12:08 ` Bartosz Golaszewski
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