linux-kernel - [REGRESSION] [PATCH net-next v5 2/2] net: stmmac: use per-queue 64 bit statistics where necessary

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Date:   Mon, 11 Sep 2023 19:11:02 +0200
From:   Uwe Kleine-König <u.kleine-koenig@...gutronix.de>
To:     Jisheng Zhang <jszhang@...nel.org>
Cc:     Giuseppe Cavallaro <peppe.cavallaro@...com>,
        Alexandre Torgue <alexandre.torgue@...s.st.com>,
        Jose Abreu <joabreu@...opsys.com>,
        "David S . Miller" <davem@...emloft.net>,
        Eric Dumazet <edumazet@...gle.com>,
        Jakub Kicinski <kuba@...nel.org>,
        Paolo Abeni <pabeni@...hat.com>,
        Maxime Coquelin <mcoquelin.stm32@...il.com>,
        Chen-Yu Tsai <wens@...e.org>,
        Jernej Skrabec <jernej.skrabec@...il.com>,
        Samuel Holland <samuel@...lland.org>, netdev@...r.kernel.org,
        linux-stm32@...md-mailman.stormreply.com,
        linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org,
        linux-sunxi@...ts.linux.dev, kernel@...gutronix.de
Subject: [REGRESSION] [PATCH net-next v5 2/2] net: stmmac: use per-queue 64
 bit statistics where necessary

Hello,

this patch became commit 133466c3bbe171f826294161db203f7670bb30c8 and is
part of v6.6-rc1.

On my arm/stm32mp157 based machine using NFS root this commit makes the
following appear in the kernel log:

	INFO: trying to register non-static key.
	The code is fine but needs lockdep annotation, or maybe
	you didn't initialize this object before use?
	turning off the locking correctness validator.
	CPU: 0 PID: 1 Comm: swapper/0 Not tainted 6.5.0-rc1-00449-g133466c3bbe1-dirty #21
	Hardware name: STM32 (Device Tree Support)
	 unwind_backtrace from show_stack+0x18/0x1c
	 show_stack from dump_stack_lvl+0x60/0x90
	 dump_stack_lvl from register_lock_class+0x98c/0x99c
	 register_lock_class from __lock_acquire+0x74/0x293c
	 __lock_acquire from lock_acquire+0x134/0x398
	 lock_acquire from stmmac_get_stats64+0x2ac/0x2fc
	 stmmac_get_stats64 from dev_get_stats+0x44/0x130
	 dev_get_stats from rtnl_fill_stats+0x38/0x120
	 rtnl_fill_stats from rtnl_fill_ifinfo+0x834/0x17f4
	 rtnl_fill_ifinfo from rtmsg_ifinfo_build_skb+0xc0/0x144
	 rtmsg_ifinfo_build_skb from rtmsg_ifinfo+0x50/0x88
	 rtmsg_ifinfo from __dev_notify_flags+0xc0/0xec
	 __dev_notify_flags from dev_change_flags+0x50/0x5c
	 dev_change_flags from ip_auto_config+0x2f4/0x1260
	 ip_auto_config from do_one_initcall+0x70/0x35c
	 do_one_initcall from kernel_init_freeable+0x2ac/0x308
	 kernel_init_freeable from kernel_init+0x1c/0x138
	 kernel_init from ret_from_fork+0x14/0x2c
	Exception stack(0xe0815fb0 to 0xe0815ff8)
	5fa0:                                     00000000 00000000 00000000 00000000
	5fc0: 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000
	5fe0: 00000000 00000000 00000000 00000000 00000013 00000000
	dwc2 49000000.usb-otg: new device is high-speed

I didn't try understand this problem, it's too close to quitting time
:-)

Best regards
Uwe

-- 
Pengutronix e.K.                           | Uwe Kleine-König            |
Industrial Linux Solutions                 | https://www.pengutronix.de/ |

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