From: baruch@tkos.co.il (Baruch Siach)
To: linux-arm-kernel@lists.infradead.org
Subject: [bug report] armada-8040-mcbin: 4.20-rc1 boot failure
Date: Sun, 11 Nov 2018 15:08:53 +0200 [thread overview]
Message-ID: <877ehj7od6.fsf@tkos.co.il> (raw)
In-Reply-To: <20181109121112.xibwnc354wzsbovl@bars>
Hi Sergey, Gregory,
Sergey Matyukevich writes:
> MacchiatoBin board fails to boot v4.20-rc1 kernel built using arm64
> defconfig. According to quick bisection of the board dts file, the
> root cause is in dts patch enabling CPU deep idle states:
> see 8ed46368776b3bc. Is there any pending fix other than reverting
> deep idle state support ?
I reproduced the same boot failure on the Armada 8K based Clearfog
GT-8K. Revert of commit 8ed46368776b3bc on top of v4.20-rc1 makes the
system boot again.
Here is the splat I get:
[ 87.358425] rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
[ 87.364556] rcu: 3-...!: (1 ticks this GP) idle=d04/0/0x0 softirq=79/79 fqs=1
[ 87.371897] rcu: (detected by 2, t=21490 jiffies, g=-1035, q=179)
[ 87.378106] Task dump for CPU 3:
[ 87.381347] swapper/3 R running task 0 0 1 0x00000028
[ 87.388428] Call trace:
[ 87.390892] __switch_to+0x78/0xb4
[ 87.394310] arm_enter_idle_state+0x38/0x4c
[ 87.398512] cpuidle_enter_state+0xc8/0x15c
[ 87.402713] cpuidle_enter+0x18/0x20
[ 87.406304] call_cpuidle+0x30/0x34
[ 87.409807] do_idle+0x19c/0x224
[ 87.413048] cpu_startup_entry+0x20/0x24
[ 87.416988] secondary_start_kernel+0x158/0x168
baruch
--
http://baruch.siach.name/blog/ ~. .~ Tk Open Systems
=}------------------------------------------------ooO--U--Ooo------------{=
- baruch at tkos.co.il - tel: +972.52.368.4656, http://www.tkos.co.il -
WARNING: multiple messages have this Message-ID (diff)
From: Baruch Siach <baruch@tkos.co.il>
To: Sergey Matyukevich <geomatsi@gmail.com>,
Gregory CLEMENT <gregory.clement@bootlin.com>
Cc: linux-kernel@vger.kernel.org, devicetree@vger.kernel.org,
linux-arm-kernel@lists.infradead.org
Subject: Re: [bug report] armada-8040-mcbin: 4.20-rc1 boot failure
Date: Sun, 11 Nov 2018 15:08:53 +0200 [thread overview]
Message-ID: <877ehj7od6.fsf@tkos.co.il> (raw)
In-Reply-To: <20181109121112.xibwnc354wzsbovl@bars>
Hi Sergey, Gregory,
Sergey Matyukevich writes:
> MacchiatoBin board fails to boot v4.20-rc1 kernel built using arm64
> defconfig. According to quick bisection of the board dts file, the
> root cause is in dts patch enabling CPU deep idle states:
> see 8ed46368776b3bc. Is there any pending fix other than reverting
> deep idle state support ?
I reproduced the same boot failure on the Armada 8K based Clearfog
GT-8K. Revert of commit 8ed46368776b3bc on top of v4.20-rc1 makes the
system boot again.
Here is the splat I get:
[ 87.358425] rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
[ 87.364556] rcu: 3-...!: (1 ticks this GP) idle=d04/0/0x0 softirq=79/79 fqs=1
[ 87.371897] rcu: (detected by 2, t=21490 jiffies, g=-1035, q=179)
[ 87.378106] Task dump for CPU 3:
[ 87.381347] swapper/3 R running task 0 0 1 0x00000028
[ 87.388428] Call trace:
[ 87.390892] __switch_to+0x78/0xb4
[ 87.394310] arm_enter_idle_state+0x38/0x4c
[ 87.398512] cpuidle_enter_state+0xc8/0x15c
[ 87.402713] cpuidle_enter+0x18/0x20
[ 87.406304] call_cpuidle+0x30/0x34
[ 87.409807] do_idle+0x19c/0x224
[ 87.413048] cpu_startup_entry+0x20/0x24
[ 87.416988] secondary_start_kernel+0x158/0x168
baruch
--
http://baruch.siach.name/blog/ ~. .~ Tk Open Systems
=}------------------------------------------------ooO--U--Ooo------------{=
- baruch@tkos.co.il - tel: +972.52.368.4656, http://www.tkos.co.il -
next prev parent reply other threads:[~2018-11-11 13:08 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-11-09 12:11 [bug report] armada-8040-mcbin: 4.20-rc1 boot failure Sergey Matyukevich
2018-11-09 12:17 ` Sergey Matyukevich
2018-11-11 13:08 ` Baruch Siach [this message]
2018-11-11 13:08 ` Baruch Siach
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