Re: next/master bisection: baseline.login on sun8i-h2-plus-orangepi-zero

[Guillaume Tucker]

Hi Stephen,

Please see the bisection report below about a boot failure.

Reports aren't automatically sent to the public while we're
trialing new bisection features on kernelci.org but this one
looks valid.

There's nothing in the serial console log, probably because it's
crashing too early during boot.  I'm not sure if other platforms
on kernelci.org were hit by this in the same way, it's tricky to
tell partly because there is no output.  It should possible to
run it again with earlyprintk enabled in BayLibre's test lab
though.

Thanks,
Guillaume


On 18/02/2020 02:14, kernelci.org bot wrote:
> * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
> * This automated bisection report was sent to you on the basis  *
> * that you may be involved with the breaking commit it has      *
> * found.  No manual investigation has been done to verify it,   *
> * and the root cause of the problem may be somewhere else.      *
> *                                                               *
> * If you do send a fix, please include this trailer:            *
> *   Reported-by: "kernelci.org bot" <bot@xxxxxxxxxxxx>          *
> *                                                               *
> * Hope this helps!                                              *
> * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
> 
> next/master bisection: baseline.login on sun8i-h2-plus-orangepi-zero
> 
> Summary:
>   Start:      c25a951c50dc Add linux-next specific files for 20200217
>   Plain log:  https://storage.kernelci.org//next/master/next-20200217/arm/multi_v7_defconfig/gcc-8/lab-baylibre/baseline-sun8i-h2-plus-orangepi-zero.txt
>   HTML log:   https://storage.kernelci.org//next/master/next-20200217/arm/multi_v7_defconfig/gcc-8/lab-baylibre/baseline-sun8i-h2-plus-orangepi-zero.html
>   Result:     2760878662a2 clk: Bail out when calculating phase fails during clk registration
> 
> Checks:
>   revert:     PASS
>   verify:     PASS
> 
> Parameters:
>   Tree:       next
>   URL:        git://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git
>   Branch:     master
>   Target:     sun8i-h2-plus-orangepi-zero
>   CPU arch:   arm
>   Lab:        lab-baylibre
>   Compiler:   gcc-8
>   Config:     multi_v7_defconfig
>   Test case:  baseline.login
> 
> Breaking commit found:
> 
> -------------------------------------------------------------------------------
> commit 2760878662a290ac57cff8a5a8d8bda8f4dddc37
> Author: Stephen Boyd <sboyd@xxxxxxxxxx>
> Date:   Wed Feb 5 15:28:02 2020 -0800
> 
>     clk: Bail out when calculating phase fails during clk registration
>     
>     Bail out of clk registration if we fail to get the phase for a clk that
>     has a clk_ops::get_phase() callback. Print a warning too so that driver
>     authors can easily figure out that some clk is unable to read back phase
>     information at boot.
>     
>     Cc: Douglas Anderson <dianders@xxxxxxxxxxxx>
>     Cc: Heiko Stuebner <heiko@xxxxxxxxx>
>     Suggested-by: Jerome Brunet <jbrunet@xxxxxxxxxxxx>
>     Signed-off-by: Stephen Boyd <sboyd@xxxxxxxxxx>
>     Link: https://lkml.kernel.org/r/20200205232802.29184-5-sboyd@xxxxxxxxxx
>     Acked-by: Jerome Brunet <jbrunet@xxxxxxxxxxxx>
> 
> diff --git a/drivers/clk/clk.c b/drivers/clk/clk.c
> index dc8bdfbd6a0c..ed1797857bae 100644
> --- a/drivers/clk/clk.c
> +++ b/drivers/clk/clk.c
> @@ -3457,7 +3457,12 @@ static int __clk_core_init(struct clk_core *core)
>  	 * Since a phase is by definition relative to its parent, just
>  	 * query the current clock phase, or just assume it's in phase.
>  	 */
> -	clk_core_get_phase(core);
> +	ret = clk_core_get_phase(core);
> +	if (ret < 0) {
> +		pr_warn("%s: Failed to get phase for clk '%s'\n", __func__,
> +			core->name);
> +		goto out;
> +	}
>  
>  	/*
>  	 * Set clk's duty cycle.
> -------------------------------------------------------------------------------
> 
> 
> Git bisection log:
> 
> -------------------------------------------------------------------------------
> git bisect start
> # good: [11a48a5a18c63fd7621bb050228cebf13566e4d8] Linux 5.6-rc2
> git bisect good 11a48a5a18c63fd7621bb050228cebf13566e4d8
> # bad: [c25a951c50dca1da4a449a985a9debd82dc18573] Add linux-next specific files for 20200217
> git bisect bad c25a951c50dca1da4a449a985a9debd82dc18573
> # bad: [5859c179b7ed01050641bd565959a2c4571923da] Merge remote-tracking branch 'swiotlb/linux-next'
> git bisect bad 5859c179b7ed01050641bd565959a2c4571923da
> # bad: [ecf5a6e1ec22ecbe1c9086f40130188f31e37a38] Merge remote-tracking branch 'xtensa/xtensa-for-next'
> git bisect bad ecf5a6e1ec22ecbe1c9086f40130188f31e37a38
> # good: [e475ff54b7d62c550768ce36617e8c8fec72cfc0] Merge remote-tracking branch 'reset/reset/next'
> git bisect good e475ff54b7d62c550768ce36617e8c8fec72cfc0
> # bad: [9e86f8cc2d2f464e27c172127e02641fe77eccea] Merge remote-tracking branch 'sh/sh-next'
> git bisect bad 9e86f8cc2d2f464e27c172127e02641fe77eccea
> # good: [1752d66d86600e9cb508612ded6984774b72321d] Merge remote-tracking branch 'tegra/for-next'
> git bisect good 1752d66d86600e9cb508612ded6984774b72321d
> # bad: [0ecb83df935b058a2c3727716a7fab539dbaba88] Merge remote-tracking branch 'csky/linux-next'
> git bisect bad 0ecb83df935b058a2c3727716a7fab539dbaba88
> # bad: [898fe3af935a45236cbfd053e79ae01506ae7aa2] Merge branch 'clk-formatting' into clk-next
> git bisect bad 898fe3af935a45236cbfd053e79ae01506ae7aa2
> # bad: [0d426990beac93127a4ee37cc056fce928466f7d] Merge branch 'clk-phase-errors' into clk-next
> git bisect bad 0d426990beac93127a4ee37cc056fce928466f7d
> # good: [6e37add6b938941f755928159ede3c9855307066] Merge branch 'clk-qcom' into clk-next
> git bisect good 6e37add6b938941f755928159ede3c9855307066
> # good: [5d98429bbebc5dc683ea6919d9b9e6e83e8c8867] Merge branch 'clk-fixes' into clk-next
> git bisect good 5d98429bbebc5dc683ea6919d9b9e6e83e8c8867
> # good: [768a5d4f63c29d3bed5abb3c187312fcf623fa05] clk: Use 'parent' to shorten lines in __clk_core_init()
> git bisect good 768a5d4f63c29d3bed5abb3c187312fcf623fa05
> # bad: [2760878662a290ac57cff8a5a8d8bda8f4dddc37] clk: Bail out when calculating phase fails during clk registration
> git bisect bad 2760878662a290ac57cff8a5a8d8bda8f4dddc37
> # good: [0daa376d832f4ce585f153efee4233b52fa3fe58] clk: Move rate and accuracy recalc to mostly consumer APIs
> git bisect good 0daa376d832f4ce585f153efee4233b52fa3fe58
> # first bad commit: [2760878662a290ac57cff8a5a8d8bda8f4dddc37] clk: Bail out when calculating phase fails during clk registration
> -------------------------------------------------------------------------------
>