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From: "Russell King (Oracle)" <linux@armlinux.org.uk>
To: Maxime Chevallier <maxime.chevallier@bootlin.com>
Cc: Tao Wang <tao03.wang@horizon.auto>,
	alexandre.torgue@foss.st.com, andrew+netdev@lunn.ch,
	davem@davemloft.net, edumazet@google.com, horms@kernel.org,
	kuba@kernel.org, linux-doc@vger.kernel.org,
	linux-kernel@vger.kernel.org, mcoquelin.stm32@gmail.com,
	netdev@vger.kernel.org, pabeni@redhat.com
Subject: Re: [PATCH net v2] net: stmmac: fix transmit queue timed out after resume
Date: Fri, 16 Jan 2026 18:08:20 +0000	[thread overview]
Message-ID: <aWp-lDunV9URYNRL@shell.armlinux.org.uk> (raw)
In-Reply-To: <aWo_K0ocxs5kWcZT@shell.armlinux.org.uk>

On Fri, Jan 16, 2026 at 01:37:48PM +0000, Russell King (Oracle) wrote:
> On Fri, Jan 16, 2026 at 12:50:35AM +0000, Russell King (Oracle) wrote:
> > However, while this may explain the transmit slowdown because it's
> > on the transmit side, it doesn't explain the receive problem.
> 
> I'm bisecting to find the cause of the receive issue, but it's going to
> take a long time (in the mean time, I can't do any mainline work.)
> 
> So far, the range of good/bad has been narrowed down to 6.14 is good,
> 1b98f357dadd ("Merge tag 'net-next-6.16' of
> git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-next") is bad.
> 
> 14 more iterations to go. Might be complete by Sunday. (Slowness in
> building the more fully featured net-next I use primarily for build
> testing, the slowness of the platform to reboot, and the need to
> manually test each build.)

Well, that's been a waste of time today. While the next iteration was
building, because it's been suspicious that each and every bisect
point has failed so far, I decided to re-check 6.14, and that fails.
So, it looks like this problem has existed for some considerable
time. I don't have the compute power locally to bisect over a massive
range of kernels, so I'm afraid stmmac receive is going to have to
stay broken unless someone else can bisect (and find a "good" point
in the git history.)

-- 
RMK's Patch system: https://www.armlinux.org.uk/developer/patches/
FTTP is here! 80Mbps down 10Mbps up. Decent connectivity at last!

  reply	other threads:[~2026-01-16 18:08 UTC|newest]

Thread overview: 20+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2026-01-09  7:02 [PATCH net Resend] net: stmmac: fix transmit queue timed out after resume Tao Wang
2026-01-13  4:05 ` Jakub Kicinski
2026-01-14 11:00   ` [PATCH net v2] " Tao Wang
2026-01-14 11:26     ` Russell King (Oracle)
2026-01-15  7:08       ` Tao Wang
2026-01-15 12:09         ` Russell King (Oracle)
2026-01-15 19:40           ` Russell King (Oracle)
2026-01-15 21:04             ` Maxime Chevallier
2026-01-15 21:35               ` Maxime Chevallier
2026-01-16  0:50                 ` Russell King (Oracle)
2026-01-16 13:37                   ` Russell King (Oracle)
2026-01-16 18:08                     ` Russell King (Oracle) [this message]
2026-01-16 18:27                       ` Maxime Chevallier
2026-01-16 19:22                         ` Russell King (Oracle)
2026-01-16 20:57                           ` Russell King (Oracle)
2026-01-17 17:06                             ` Jakub Kicinski
2026-01-17 20:50                               ` Russell King (Oracle)
2026-01-16  7:29           ` Tao Wang
2026-01-15  3:16     ` Jakub Kicinski
2026-01-15  7:19       ` Tao Wang

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