From: Sunil V L <sunilvl@ventanamicro.com>
To: Shuan He <heshuan@bytedance.com>
Cc: bhelgaas@google.com, cuiyunhui@bytedance.com,
linux-pci@vger.kernel.org, linux-kernel@vger.kernel.org
Subject: Re: [RFC 0/1] PCI: Fix pci devices double register WARNING in the kernel starting process
Date: Thu, 3 Jul 2025 12:05:51 +0530 [thread overview]
Message-ID: <aGYkx4a4eJUJorYp@sunil-laptop> (raw)
In-Reply-To: <20250702155112.40124-1-heshuan@bytedance.com>
On Wed, Jul 02, 2025 at 11:51:11PM +0800, Shuan He wrote:
> Hi All.
> I encountered a WARNING printed out during the kernel starting process
> on my developing environment.
> (with RISC-V arch, 6.12 kernel, and Debian 13 OS).
>
> WARN Trace:
> [ 0.518993] proc_dir_entry '000c:00/00.0' already registered
> [ 0.519187] WARNING: CPU: 2 PID: 179 at fs/proc/generic.c:375 proc_register+0xf6/0x180
> [ 0.519214] [<ffffffff804055a6>] proc_register+0xf6/0x180
> [ 0.519217] [<ffffffff80405a9e>] proc_create_data+0x3e/0x60
> [ 0.519220] [<ffffffff80616e44>] pci_proc_attach_device+0x74/0x130
> [ 0.509991] [<ffffffff805f1af2>] pci_bus_add_device+0x42/0x100
> [ 0.509997] [<ffffffff805f1c76>] pci_bus_add_devices+0xc6/0x110
> [ 0.519230] [<ffffffff8066763c>] acpi_pci_root_add+0x54c/0x810
> [ 0.519233] [<ffffffff8065d206>] acpi_bus_attach+0x196/0x2f0
> [ 0.519234] [<ffffffff8065d390>] acpi_scan_clear_dep_fn+0x30/0x70
> [ 0.519236] [<ffffffff800468fa>] process_one_work+0x19a/0x390
> [ 0.519239] [<ffffffff80047a6e>] worker_thread+0x2be/0x420
> [ 0.519241] [<ffffffff80050dc4>] kthread+0xc4/0xf0
> [ 0.519243] [<ffffffff80ad6ad2>] ret_from_fork+0xe/0x1c
>
This should not happen. I suspect some issue in ACPI namespace/_PRT. Can
you reproduce this on qemu virt machine?
Regards
Sunil
next prev parent reply other threads:[~2025-07-03 6:36 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2025-07-02 15:51 [RFC 0/1] PCI: Fix pci devices double register WARNING in the kernel starting process Shuan He
2025-07-02 15:51 ` [PATCH] PCI: Fix pci devices double register WARN " Shuan He
2025-07-03 15:09 ` kernel test robot
2025-07-03 6:35 ` Sunil V L [this message]
2025-07-03 11:31 ` [External] Re: [RFC 0/1] PCI: Fix pci devices double register WARNING " 拴何
2025-07-03 12:48 ` Manivannan Sadhasivam
2025-07-04 7:41 ` He Shuan
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