linux-kernel - Re: [PATCH 3.19 000/177] 3.19.7-stable review

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Message-ID: <CANMBJr7p3TXxZjFqipdDYRKRMbsdDFGYFuMnWRfvdFzDGXV_xQ@mail.gmail.com>
Date:	Wed, 6 May 2015 22:25:17 -0700
From:	Tyler Baker <tyler.baker@...aro.org>
To:	Greg Kroah-Hartman <gregkh@...uxfoundation.org>
Cc:	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	torvalds@...ux-foundation.org,
	Andrew Morton <akpm@...ux-foundation.org>, linux@...ck-us.net,
	shuah.kh@...sung.com, stable@...r.kernel.org,
	boris.brezillon@...e-electrons.com,
	Mike Turquette <mturquette@...aro.org>
Subject: Re: [PATCH 3.19 000/177] 3.19.7-stable review

Hi Greg,

On 5 May 2015 at 15:10, Greg Kroah-Hartman <gregkh@...uxfoundation.org> wrote:
> On Sat, May 02, 2015 at 09:00:22PM +0200, Greg Kroah-Hartman wrote:
>> This is the start of the stable review cycle for the 3.19.7 release.
>> There are 177 patches in this series, all will be posted as a response
>> to this one.  If anyone has any issues with these being applied, please
>> let me know.
>>
>> Responses should be made by Mon May  4 18:59:31 UTC 2015.
>> Anything received after that time might be too late.
>>
>> The whole patch series can be found in one patch at:
>>       kernel.org/pub/linux/kernel/v3.0/stable-review/patch-3.19.7-rc1.gz
>> and the diffstat can be found below.
>
> -rc2 is out now that should work properly:
>
>         kernel.org/pub/linux/kernel/v3.0/stable-review/patch-3.19.7-rc2.gz

The kernelci.org robot reported new boot failures in v3.19.7 on a
variety of at91 boards[1][2][3]. I instructed the robot perform a boot
bisection which yielded...

git bisect start
# bad: [7214c55cba9630a4728f86ae6b3c73c962430711] Linux 3.19.7
git bisect bad 7214c55cba9630a4728f86ae6b3c73c962430711
# good: [3c464c73693b6d118c129d7f07dbc1ea26aa6d8a] Linux 3.19.6
git bisect good 3c464c73693b6d118c129d7f07dbc1ea26aa6d8a
# bad: [31064e86b01887a28fa26af528dc5239be384435] ptrace: fix race
between ptrace_resume() and wait_task_stopped()
git bisect bad 31064e86b01887a28fa26af528dc5239be384435
# good: [7595f5425cad83e037639e228ee24d5052510139] md/raid0: fix bug
with chunksize not a power of 2.
git bisect good 7595f5425cad83e037639e228ee24d5052510139
# good: [dc7a0b0a432521d4b40987b344a9b5473a9bd18b] usb: phy: Find the
right match in devm_usb_phy_match
git bisect good dc7a0b0a432521d4b40987b344a9b5473a9bd18b
# good: [dc7507e89e2c67143e5bb51488f4e5c7e0f6d3bd] usb: host: sl811:
use new USB_RESUME_TIMEOUT
git bisect good dc7507e89e2c67143e5bb51488f4e5c7e0f6d3bd
# bad: [92465054d08aa11c32b77969bc3be89d1c229f9f] ALSA: hda/realtek -
Enable the ALC292 dock fixup on the Thinkpad T450
git bisect bad 92465054d08aa11c32b77969bc3be89d1c229f9f
# bad: [c67881fc890916206e723329e774391c6ed354ce] clk: at91: usb:
propagate rate modification to the parent clk
git bisect bad c67881fc890916206e723329e774391c6ed354ce
# good: [d7f24470bf614ff986c9370f5704fa635b448918] usb: core: hub: use
new USB_RESUME_TIMEOUT
git bisect good d7f24470bf614ff986c9370f5704fa635b448918

c67881fc890916206e723329e774391c6ed354ce is the first bad commit
commit c67881fc890916206e723329e774391c6ed354ce
Author: Boris Brezillon <boris.brezillon@...e-electrons.com>
Date:   Sun Mar 29 03:45:33 2015 +0200

    clk: at91: usb: propagate rate modification to the parent clk

    commit 4591243102faa8de92da320edea47219901461e9 upstream.

    The at91sam9n12 and at91sam9x5 usb clocks do not propagate rate
    modification requests to their parents.
    This causes a bug when the PLLB is left uninitialized by the bootloader
    (PLL multiplier set to 0, or in other words, PLL rate = 0 Hz).

    Implement the determinate_rate method and propagate the change rate
    request to the parent clk.

    Signed-off-by: Boris Brezillon <boris.brezillon@...e-electrons.com>
    Reported-by: Bo Shen <voice.shen@...el.com>
    Tested-by: Bo Shen <voice.shen@...el.com>
    Signed-off-by: Michael Turquette <mturquette@...aro.org>
    Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>

Locally I've reverted c67881fc890916206e723329e774391c6ed354ce on top
of v3.19.7 and confirmed that my at91-sama5d3_xplained boots that
kernel successfully[4].

>
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Cheers,

Tyler

[1] http://kernelci.org/boot/?v3.19&at91
[2] https://lists.linaro.org/pipermail/kernel-build-reports/2015-May/008917.html
[3] http://storage.kernelci.org/stable/v3.19.7/arm-sama5_defconfig/lab-tbaker/boot-at91-sama5d3_xplained.html
[4] http://lava.kernelci.org/scheduler/job/80240/log_file
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