linux-kernel - Re: [PATCH 6.1 000/243] 6.1.91-rc2 review

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Date: Wed, 15 May 2024 09:58:33 -0700
From: Guenter Roeck <linux@...ck-us.net>
To: Linus Torvalds <torvalds@...ux-foundation.org>,
 Mark Brown <broonie@...nel.org>
Cc: Greg Kroah-Hartman <gregkh@...uxfoundation.org>, stable@...r.kernel.org,
 patches@...ts.linux.dev, linux-kernel@...r.kernel.org,
 akpm@...ux-foundation.org, shuah@...nel.org, patches@...nelci.org,
 lkft-triage@...ts.linaro.org, pavel@...x.de, jonathanh@...dia.com,
 f.fainelli@...il.com, sudipm.mukherjee@...il.com, srw@...dewatkins.net,
 rwarsow@....de, conor@...nel.org, allen.lkml@...il.com,
 Florian Fainelli <florian.fainelli@...adcom.com>,
 Doug Berger <opendmb@...il.com>
Subject: Re: [PATCH 6.1 000/243] 6.1.91-rc2 review

On 5/15/24 09:20, Linus Torvalds wrote:
> On Wed, 15 May 2024 at 09:17, Mark Brown <broonie@...nel.org> wrote:
>>
>>      A bisect claims that "net: bcmgenet:
>> synchronize EXT_RGMII_OOB_CTRL access" is the first commit that breaks,
>> I'm not seeing issues with other stables.
> 
> That's d85cf67a3396 ("net: bcmgenet: synchronize EXT_RGMII_OOB_CTRL
> access") upstream. Is upstream ok?
> 

Upstream code was rearranged. d85cf67a3396 affects bcmgenet_mii_config().
3443d6c3616b affects bcmgenet_mac_config(). bcmgenet_mac_config()
is called from bcmgenet_phy_pause_set() under phydev->lock. I would guess
that trying to acquire the same lock in in bcmgenet_mac_config() results
in a deadlock.

Guenter