"WARNING: CPU: 0 PID: 67 at arch/x86/mm/ioremap.c:461 iounmap+0xda/0xe0" at initializing PCMCIA serial card (Thinkpad T60, v6.12-rc2)

[Erhard Furtner]

Greetings!

On kernel v6.12-rc2 this warning shows up when my PCMCIA serial card gets initialized on my Thinkpad T60:

[...]
pcmcia_socket pcmcia_socket0: pccard: PCMCIA card inserted into slot 0
pcmcia_socket pcmcia_socket0: cs: memory probe 0xe46d0000-0xe7ffffff:
------------[ cut here ]------------
WARNING: CPU: 0 PID: 67 at arch/x86/mm/ioremap.c:461 iounmap+0xda/0xe0
Modules linked in:
CPU: 0 UID: 0 PID: 67 Comm: pccardd Tainted: G        W          6.12.0-rc2-P3 #3
Tainted: [W]=WARN
Hardware name: LENOVO 2007F2G/2007F2G, BIOS 79ETE7WW (2.27 ) 03/21/2011
EIP: iounmap+0xda/0xe0
Code: c7 75 2b 89 f8 e8 6a 27 16 00 5e 5f 5b 5d 31 c0 31 c9 31 d2 c3 56 68 9c 8e 92 c9 e8 e8 c3 73 00 83 c4 08 e8 3c 33 74 00 eb e0 <0f> 0b eb dc 0f 0b 55 89 e5 56 89 c6 25 00 f0 ff ff 31 d2 b9 00 10
EAX: f7dfe000 EBX: c1b7b578 ECX: 00000000 EDX: 00000000
ESI: 00000000 EDI: c1a95e40 EBP: c1a95e10 ESP: c1a95e04
DS: 007b ES: 007b FS: 00d8 GS: 0000 SS: 0068 EFLAGS: 00010286
CR0: 80050033 CR2: ffbff000 CR3: 09b7c000 CR4: 000006f0
Call Trace:
 ? show_regs+0x4e/0x5c
 ? __warn+0x87/0xdc
 ? iounmap+0xda/0xe0
 ? report_bug+0x94/0x108
 ? exc_overflow+0x3c/0x3c
 ? handle_bug+0x41/0x60
 ? exc_invalid_op+0x17/0x40
 ? handle_exception+0x101/0x101
 ? exc_overflow+0x3c/0x3c
 ? iounmap+0xda/0xe0
 ? exc_overflow+0x3c/0x3c
 ? iounmap+0xda/0xe0
 readable+0x69/0xb8
 ? do_mem_probe+0x190/0x190
 do_validate_mem+0x8a/0x154
 do_mem_probe+0xa8/0x190
 ? do_mem_probe+0x190/0x190
 pcmcia_nonstatic_validate_mem+0x45/0x80
 ? do_mem_probe+0x190/0x190
 ? readable+0xb8/0xb8
 pcmcia_validate_mem+0x14/0x1c
 pcmcia_card_add+0x3c/0xb0
 pcmcia_bus_add+0x3a/0x44
 socket_insert+0xc7/0xcc
 pccardd+0x143/0x370
 kthread+0xc4/0xd0
 ? pcmcia_register_socket+0x28c/0x28c
 ? kthread_blkcg+0x24/0x24
 ? kthread_blkcg+0x24/0x24
 ret_from_fork+0x31/0x3c
 ret_from_fork_asm+0x12/0x18
 entry_INT80_32+0xf0/0xf0
---[ end trace 0000000000000000 ]---
 excluding 0xe4df4000-0xe5185fff 0xe5fce000-0xe635ffff 0xe6e16000-0xe71a7fff 0xe7ff0000-0xe8381fff
pcmcia (null): pcmcia: registering new device pcmcia(null) (IRQ: 16)
serial_cs 0.0: trying to set up [0x0279:0x950b] (pfc: 0, multi: 2, quirk: c980f7c0)
0.0: ttyS4 at I/O 0xa108 (irq = 16, base_baud = 115200) is a 16450
[...]

Some data about the card:
 # lspci -v -s 15:00.0
15:00.0 CardBus bridge: Texas Instruments PCI1510 PC card Cardbus Controller
	Subsystem: Lenovo ThinkPad T60/R60 series
	Flags: bus master, medium devsel, latency 168, IRQ 16
	Memory at e4300000 (32-bit, non-prefetchable) [size=4K]
	Bus: primary=15, secondary=16, subordinate=17, sec-latency=176
	Memory window 0: e0000000-e3ffffff (prefetchable)
	Memory window 1: c4000000-c7ffffff
	I/O window 0: 0000a000-0000a0ff
	I/O window 1: 0000a400-0000a4ff
	16-bit legacy interface ports at 0001
	Capabilities: [a0] Power Management version 2
	Kernel driver in use: yenta_cardbus


Kernel .config attached. Full dmesg can be provided if needed.

Regards,
Erhard

Attachment: config_612-rc2_p3
Description: Binary data