From: Borislav Petkov <bp@alien8.de>
To: yanjiang.jin@windriver.com
Cc: morbidrsa@gmail.com, mchehab@kernel.org, york.sun@nxp.com,
linux-edac@vger.kernel.org, linux-kernel@vger.kernel.org,
jinyanjing@gmail.com
Subject: Re: [PATCH] edac: mpc85xx: implement "remove" for mpc85xx_pci_err_driver
Date: Thu, 17 Nov 2016 11:22:04 +0100 [thread overview]
Message-ID: <20161117102204.daoziitohia2zptx@pd.tnic> (raw)
In-Reply-To: <1479351380-17109-2-git-send-email-yanjiang.jin@windriver.com>
On Thu, Nov 17, 2016 at 10:56:20AM +0800, yanjiang.jin@windriver.com wrote:
> From: Yanjiang Jin <yanjiang.jin@windriver.com>
>
> Tested on a T4240QDS board.
>
> If we execute the below steps without this patch:
>
> 1. modprobe mpc85xx_edac [The first insmod, everything is well.]
> 2. modprobe -r mpc85xx_edac
> 3. modprobe mpc85xx_edac [insmod again, error happens.]
>
> We would get the error messages as below:
>
> BUG: recent printk recursion!
> Oops: Kernel access of bad area, sig: 11 [#48]
> Modules linked in: mpc85xx_edac edac_core softdog [last unloaded: mpc85xx_edac]
> CPU: 5 PID: 14773 Comm: modprobe Tainted: G D C 4.8.3-rt2
>
> .vsnprintf
> .vscnprintf
> .vprintk_emit
> .printk
> .edac_pci_add_device
> .mpc85xx_pci_err_probe
> .platform_drv_probe
> .driver_probe_device
> .__driver_attach
> .bus_for_each_dev
> .driver_attach
> .bus_add_driver
> .driver_register
> .__platform_register_drivers
> .mpc85xx_mc_init
> .do_one_initcall
> .do_init_module
> .load_module
> .SyS_finit_module
> system_call
>
> Signed-off-by: Yanjiang Jin <yanjiang.jin@windriver.com>
> ---
> drivers/edac/mpc85xx_edac.c | 17 +++++++++++++++++
> 1 file changed, 17 insertions(+)
Applied, thanks.
--
Regards/Gruss,
Boris.
Good mailing practices for 400: avoid top-posting and trim the reply.
next prev parent reply other threads:[~2016-11-17 10:22 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-11-17 2:56 [V2 PATCH] " yanjiang.jin
2016-11-17 2:56 ` [PATCH] " yanjiang.jin
2016-11-17 10:22 ` Borislav Petkov [this message]
-- strict thread matches above, loose matches on Subject: below --
2016-11-16 6:26 yanjiang.jin
2016-11-16 10:08 ` Borislav Petkov
2016-11-16 16:55 ` york sun
2016-11-17 10:00 ` Johannes Thumshirn
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