linux-kernel - Re: [Regression Bug] Re: [PATCH net v3 2/2] ppp: fix race conditions in ppp_fill_forward

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Message-ID: <CAPB3MF5PV6DeyRngtTmVEVFkhjsp7PjgsWqWQGEZM_6PkQr9=A@mail.gmail.com>
Date: Sun, 31 Aug 2025 13:55:12 +0800
From: cam enih <nanericwang@...il.com>
To: Qingfang Deng <dqfext@...il.com>
Cc: andrew+netdev@...n.ch, davem@...emloft.net, edumazet@...gle.com, 
	kuba@...nel.org, kuniyu@...gle.com, linux-kernel@...r.kernel.org, 
	linux-ppp@...r.kernel.org, nbd@....name, netdev@...r.kernel.org, 
	pabeni@...hat.com, pablo@...filter.org
Subject: Re: [Regression Bug] Re: [PATCH net v3 2/2] ppp: fix race conditions
 in ppp_fill_forward_path

Yes, you are right. FYI the xanmod kernel cherry-picked the commit
"net: ipv4: fix regression in local-broadcast routes"
(https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=5189446ba995556eaa3755a6e875bc06675b88bd)
which cause the regression by fixing another.

Reverting that commit resolves the issue. However, I see this
problematic commit has been merged into the trunk, which might cause
large-scale regression in the coming versions, I'm afraid.

-Eric

On Sat, Aug 30, 2025 at 11:00 PM Qingfang Deng <dqfext@...il.com> wrote:
>
> On Sat, Aug 30, 2025 at 10:39 PM cam enih <nanericwang@...il.com> wrote:
> >
> > Here comes more details, and it might not be your commit that causes
> > the panic. sorry but I don't know where to go from here.
>
> You should try the vanilla kernel and see if the panic persists.
> If not, you should close the issue and direct your complaint to the
> fork's maintainers.