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
