linux-kernel - Re: [Regression] [PCI/ASPM] [ASUS PN51] Reboot on resume attempt (bisect done; commit found)

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Date: Fri, 5 Jan 2024 12:18:32 +0100
From: Michael Schaller <michael@...aller.de>
To: Kai-Heng Feng <kai.heng.feng@...onical.com>
Cc: Bjorn Helgaas <helgaas@...nel.org>, bhelgaas@...gle.com,
 linux-pci@...r.kernel.org, linux-kernel@...r.kernel.org,
 regressions@...ts.linux.dev, macro@...am.me.uk, ajayagarwal@...gle.com,
 sathyanarayanan.kuppuswamy@...ux.intel.com, gregkh@...uxfoundation.org,
 hkallweit1@...il.com, michael.a.bottini@...ux.intel.com,
 johan+linaro@...nel.org
Subject: Re: [Regression] [PCI/ASPM] [ASUS PN51] Reboot on resume attempt
 (bisect done; commit found)

On 05.01.24 04:25, Kai-Heng Feng wrote:
> Just wondering, does `echo 0 > /sys/power/pm_asysnc` help?

Yes, `echo 0 | sudo tee /sys/power/pm_async` does indeed also result in 
a working resume. I've tested this on kernel 6.6.9 (which still has 
commit 08d0cc5f3426). I've also attached the relevant dmesg output of 
the suspend/resume cycle in case this helps.

Furthermore does this mean that commit 08d0cc5f3426 isn't at fault but 
rather that we are dealing with a timing issue?

Michael
View attachment "dmesg-with-pm-async-disabled.txt" of type "text/plain" (10164 bytes)