linux-kernel - Re: v6.16-rc5: ttys: auto login failed Login incorrect

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]

Message-ID: <2025070924-slurp-monetary-a53f@gregkh>
Date: Wed, 9 Jul 2025 13:01:56 +0200
From: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To: Naresh Kamboju <naresh.kamboju@...aro.org>
Cc: linux-serial@...r.kernel.or, open list <linux-kernel@...r.kernel.org>,
	lkft-triage@...ts.linaro.org,
	Linux Regressions <regressions@...ts.linux.dev>,
	linux-stable <stable@...r.kernel.org>, Jiri Slaby <jslaby@...e.com>,
	Aidan Stewart <astewart@...telic.com>,
	Jakub Lewalski <jakub.lewalski@...ia.com>,
	Fabio Estevam <festevam@...il.com>,
	Anders Roxell <anders.roxell@...aro.org>,
	Arnd Bergmann <arnd@...db.de>,
	Dan Carpenter <dan.carpenter@...aro.org>,
	Ben Copeland <benjamin.copeland@...aro.org>
Subject: Re: v6.16-rc5: ttys: auto login failed Login incorrect

On Wed, Jul 09, 2025 at 04:26:53PM +0530, Naresh Kamboju wrote:
> Approximately 20% of devices are experiencing intermittent boot failures
> with this kernel version. The issue appears to be related to auto login
> failures, where an incorrect password is being detected on the serial
> console during the login process.
> 
> This intermittent regression is noticed on stable-rc 6.15.5-rc2 and
> Linux mainline master v6.16-rc5. This regressions is only specific
> to the devices not on the qemu's.
> 
> Test environments:
>  - dragonboard-410c
>  - dragonboard-845c
>  - e850-96
>  - juno-r2
>  - rk3399-rock-pi-4b
>  - x86
> 
> Regression Analysis:
> - New regression? Yes
> - Reproducibility? 20% only
> 
> Test regression: 6.15.5-rc2 v6.16-rc5 auto login failed Login incorrect
> 
> Reported-by: Linux Kernel Functional Testing <lkft@...aro.org>
> 
> ## log in problem
> 
> runner-ns46nmmj-project-40964107-concurrent-0 login: #
> Password:
> Login incorrect
> runner-ns46nmmj-project-40964107-concurrent-0 login:
> 
> ## Investigation
> The following three patches were reverted and the system was re-tested.
> The previously reported issues are no longer observed after applying the
> reverts.
> 
> serial: imx: Restore original RXTL for console to fix data loss
>     commit f23c52aafb1675ab1d1f46914556d8e29cbbf7b3 upstream.
> 
> serial: core: restore of_node information in sysfs
>     commit d36f0e9a0002f04f4d6dd9be908d58fe5bd3a279 upstream.
> 
> tty: serial: uartlite: register uart driver in init
>     [ Upstream commit 6bd697b5fc39fd24e2aa418c7b7d14469f550a93 ]


As stated before, those are 3 totally independent changes.  Any chance
you can nail this down to just one of the above?

thanks,

greg k-h