linux-kernel - Re: [PATCH 6.1 00/15] 6.1.48-rc1 review

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Date:   Thu, 24 Aug 2023 14:31:07 -0700
From:   Florian Fainelli <f.fainelli@...il.com>
To:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        stable@...r.kernel.org
Cc:     patches@...ts.linux.dev, linux-kernel@...r.kernel.org,
        torvalds@...ux-foundation.org, akpm@...ux-foundation.org,
        linux@...ck-us.net, shuah@...nel.org, patches@...nelci.org,
        lkft-triage@...ts.linaro.org, pavel@...x.de, jonathanh@...dia.com,
        sudipm.mukherjee@...il.com, srw@...dewatkins.net, rwarsow@....de,
        conor@...nel.org
Subject: Re: [PATCH 6.1 00/15] 6.1.48-rc1 review

On 8/24/23 07:14, Greg Kroah-Hartman wrote:
> This is the start of the stable review cycle for the 6.1.48 release.
> There are 15 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 Sat, 26 Aug 2023 14:14:28 +0000.
> Anything received after that time might be too late.
> 
> The whole patch series can be found in one patch at:
> 	https://www.kernel.org/pub/linux/kernel/v6.x/stable-review/patch-6.1.48-rc1.gz
> or in the git tree and branch at:
> 	git://git.kernel.org/pub/scm/linux/kernel/git/stable/linux-stable-rc.git linux-6.1.y
> and the diffstat can be found below.
> 
> thanks,
> 
> greg k-h

On ARCH_BRCMSTB using 32-bit and 64-bit ARM kernels, build tested on 
BMIPS_GENERIC:

Tested-by: Florian Fainelli <florian.fainelli@...adcom.com>

I was not testing system wide suspend resume until recently and am 
seeing various issues with drivers that implement resume_noirq, but only 
on a specific platform, see below. I will see about bisecting that at 
some point.

[   15.856930] Disabling non-boot CPUs ...
[   15.862349] CPU1 killed.
[   15.865684] Enabling non-boot CPUs ...
[   15.870067] CPU1 is up
[   15.872627] brcm-gisb-arb 47c400000.gisb-arb: PM: calling 
brcmstb_gisb_arb_resume_noirq+0x0/0x60 @ 1147, parent: rdb
[   15.883177] brcm-gisb-arb 47c400000.gisb-arb: PM: 
brcmstb_gisb_arb_resume_noirq+0x0/0x60 returned 0 after 2 usecs
[   15.893893] bcmgenet 47d580000.ethernet: PM: calling 
bcmgenet_resume_noirq+0x0/0xc0 @ 1147, parent: rdb
[   15.903611] bcmgenet 47d580000.ethernet: PM: 
bcmgenet_resume_noirq+0x0/0xc0 returned 0 after 303 usecs
[   36.902964] rcu: INFO: rcu_sched self-detected stall on CPU
[   36.908533] rcu:     0-....: (20991 ticks this GP) 
idle=0b1c/1/0x40000002 softirq=1785/1785 fqs=5251
[   36.917402]  (t=21008 jiffies g=1237 q=1 ncpus=2)
[   36.922104] CPU: 0 PID: 1147 Comm: rtcwake Not tainted 
6.1.45-g02e3f13ba3f3 #2
[   36.929321] Hardware name: Broadcom STB (Flattened Device Tree)
[   36.935234] PC is at _raw_spin_unlock_irqrestore+0x24/0x28
[   36.940719] LR is at resume_irqs+0x9c/0x138
[   36.944899] pc : [<c0d61f80>]    lr : [<c028c9e0>]    psr: 00030113
[   36.951159] sp : d1165e28  ip : c391f200  fp : c2204d00
[   36.956376] r10: c235e344  r9 : 40030113  r8 : c391f26c
[   36.961593] r7 : 00000000  r6 : c22489c0  r5 : 00000030  r4 : c391f200
[   36.968113] r3 : 0000000e  r2 : 00000500  r1 : 40030113  r0 : c391f26c
[   36.974634] Flags: nzcv  IRQs on  FIQs on  Mode SVC_32  ISA ARM 
Segment user
[   36.981763] Control: 30c5383d  Table: 036d12c0  DAC: fffffffd
[   36.987511]  _raw_spin_unlock_irqrestore from resume_irqs+0x9c/0x138
[   36.993865]  resume_irqs from dpm_resume_noirq+0x14/0x1c
[   36.999178]  dpm_resume_noirq from suspend_devices_and_enter+0x23c/0x890
[   37.005884]  suspend_devices_and_enter from pm_suspend+0x39c/0x414
[   37.012063]  pm_suspend from state_store+0x74/0xd4
[   37.016852]  state_store from kernfs_fop_write_iter+0x10c/0x1c4
[   37.022779]  kernfs_fop_write_iter from vfs_write+0x24c/0x354
[   37.028532]  vfs_write from ksys_write+0x60/0xd8
[   37.033148]  ksys_write from ret_fast_syscall+0x0/0x4c
[   37.038285] Exception stack(0xd1165fa8 to 0xd1165ff0)
[   37.043330] 5fa0:                   00000004 004ab3e8 00000004 
004ab3e8 00000004 00000000
[   37.051502] 5fc0: 00000004 004ab3e8 004aa180 00000004 b6ef6b2c 
0ee6b280 004aa180 0049703b
[   37.059673] 5fe0: 0000006c be89fb30 b6e21150 b6e7abbc

-- 
Florian