With 2.6.17-rc[12] I get the following oops: Linux version 2.6.17-rc2 (florin@hera) (gcc version 4.1.0 (Debian 4.1.0-1+b1)) #1 Sun Apr 23 00:04:42 CDT 2006 [snip] Intel ISA PCIC probe: Intel i82365sl B step ISA-to-PCMCIA at port 0x3e0 ofs 0x00, 2 sockets host opts [0]: none host opts [1]: none setup_irq: irq handler mismatch setup_irq+0xd3/0xe6 i365_count_irq+0x0/0x22 [i82365] request_irq+0x6f/0x8b test_irq+0x27/0xc7 [i82365] i365_count_irq+0x0/0x22 [i82365] add_pcic+0x59b/0x81c [i82365] do_IRQ+0x46/0x4e machine_kexec+0x8f/0xbc vsnprintf+0x455/0x490 sprintf+0x20/0x23 pnp_convert_id+0x74/0x79 compare_pnp_id+0x40/0x97 i365_get_pair+0x25/0x3b [i82365] add_socket+0x61/0xf4 [i82365] init_i82365+0x2ae/0x41b [i82365] sys_init_module+0x12b6/0x141d sysenter_past_esp+0x54/0x75 setup_irq: irq handler mismatch setup_irq+0xd3/0xe6 i365_count_irq+0x0/0x22 [i82365] request_irq+0x6f/0x8b test_irq+0x27/0xc7 [i82365] i365_count_irq+0x0/0x22 [i82365] add_pcic+0x59b/0x81c [i82365] do_IRQ+0x46/0x4e machine_kexec+0x8f/0xbc vsnprintf+0x455/0x490 sprintf+0x20/0x23 pnp_convert_id+0x74/0x79 compare_pnp_id+0x40/0x97 i365_get_pair+0x25/0x3b [i82365] add_socket+0x61/0xf4 [i82365] init_i82365+0x2ae/0x41b [i82365] sys_init_module+0x12b6/0x141d sysenter_past_esp+0x54/0x75 setup_irq: irq handler mismatch setup_irq+0xd3/0xe6 i365_count_irq+0x0/0x22 [i82365] request_irq+0x6f/0x8b test_irq+0x27/0xc7 [i82365] i365_count_irq+0x0/0x22 [i82365] add_pcic+0x59b/0x81c [i82365] do_IRQ+0x46/0x4e machine_kexec+0x8f/0xbc vsnprintf+0x455/0x490 sprintf+0x20/0x23 pnp_convert_id+0x74/0x79 compare_pnp_id+0x40/0x97 i365_get_pair+0x25/0x3b [i82365] add_socket+0x61/0xf4 [i82365] init_i82365+0x2ae/0x41b [i82365] sys_init_module+0x12b6/0x141d sysenter_past_esp+0x54/0x75 setup_irq: irq handler mismatch setup_irq+0xd3/0xe6 i365_count_irq+0x0/0x22 [i82365] request_irq+0x6f/0x8b test_irq+0x27/0xc7 [i82365] i365_count_irq+0x0/0x22 [i82365] add_pcic+0x59b/0x81c [i82365] do_IRQ+0x46/0x4e machine_kexec+0x8f/0xbc vsnprintf+0x455/0x490 sprintf+0x20/0x23 pnp_convert_id+0x74/0x79 compare_pnp_id+0x40/0x97 i365_get_pair+0x25/0x3b [i82365] add_socket+0x61/0xf4 [i82365] init_i82365+0x2ae/0x41b [i82365] sys_init_module+0x12b6/0x141d sysenter_past_esp+0x54/0x75 setup_irq: irq handler mismatch setup_irq+0xd3/0xe6 i365_count_irq+0x0/0x22 [i82365] request_irq+0x6f/0x8b test_irq+0x27/0xc7 [i82365] Losing some ticks... checking if CPU frequency changed. i365_count_irq+0x0/0x22 [i82365] add_pcic+0x59b/0x81c [i82365] do_IRQ+0x46/0x4e machine_kexec+0x8f/0xbc vsnprintf+0x455/0x490 sprintf+0x20/0x23 pnp_convert_id+0x74/0x79 compare_pnp_id+0x40/0x97 i365_get_pair+0x25/0x3b [i82365] add_socket+0x61/0xf4 [i82365] init_i82365+0x2ae/0x41b [i82365] sys_init_module+0x12b6/0x141d sysenter_past_esp+0x54/0x75 ISA irqs (scanned) = 3,4,5,7,10 polling interval = 1000 ms cs: IO port probe 0x100-0x4ff: excluding 0x378-0x37f 0x4d0-0x4d7 cs: IO port probe 0x800-0x8ff: clean. cs: IO port probe 0x100-0x4ff: excluding 0x378-0x37f 0x4d0-0x4d7 cs: IO port probe 0x800-0x8ff: clean. cs: IO port probe 0xc00-0xcff: excluding 0xcf8-0xcff cs: IO port probe 0xa00-0xaff: clean. cs: IO port probe 0xc00-0xcff: excluding 0xcf8-0xcff cs: IO port probe 0xa00-0xaff: clean. I get a similar oops on 2.6.17-rc2 compiled with gcc-4.1 and on 2.6.17-rc1 compiled with gcc-4.0.3 . 2.6.16 does not oops. This is a Toshiba 2805-S401 laptop, with the following PCI devices: 0000:00:00.0 Host bridge: Intel Corporation 440BX/ZX/DX - 82443BX/ZX/DX Host bridge (rev 03) Subsystem: Toshiba America Info Systems Toshiba Tecra 8100 Laptop System Chipset Flags: bus master, medium devsel, latency 64 Memory at d0000000 (32-bit, prefetchable) [size=256M] Capabilities: [a0] AGP version 1.0 0000:00:01.0 PCI bridge: Intel Corporation 440BX/ZX/DX - 82443BX/ZX/DX AGP bridge (rev 03) (prog-if 00 [Normal decode]) Flags: bus master, 66MHz, medium devsel, latency 64 Bus: primary=00, secondary=01, subordinate=01, sec-latency=64 Memory behind bridge: f0000000-f7ffffff Prefetchable memory behind bridge: 20000000-200fffff 0000:00:05.0 Bridge: Intel Corporation 82371AB/EB/MB PIIX4 ISA (rev 02) Flags: bus master, medium devsel, latency 0 0000:00:05.1 IDE interface: Intel Corporation 82371AB/EB/MB PIIX4 IDE (rev 01) (prog-if 80 [Master]) Flags: bus master, medium devsel, latency 64 I/O ports at fff0 [size=16] 0000:00:05.2 USB Controller: Intel Corporation 82371AB/EB/MB PIIX4 USB (rev 01) (prog-if 00 [UHCI]) Flags: bus master, medium devsel, latency 64, IRQ 11 I/O ports at ff80 [size=32] 0000:00:05.3 Bridge: Intel Corporation 82371AB/EB/MB PIIX4 ACPI (rev 03) Flags: medium devsel, IRQ 9 0000:00:08.0 Ethernet controller: Intel Corporation 82557/8/9 [Ethernet Pro 100] (rev 09) Subsystem: Intel Corporation EtherExpress PRO/100+ MiniPCI Flags: bus master, medium devsel, latency 64, IRQ 11 Memory at effff000 (32-bit, non-prefetchable) [size=4K] I/O ports at ff40 [size=64] Memory at effc0000 (32-bit, non-prefetchable) [size=128K] Expansion ROM at efe00000 [disabled] [size=1M] Capabilities: [dc] Power Management version 2 0000:00:08.1 Serial controller: Xircom Mini-PCI K56Flex Modem (prog-if 02 [16550]) Subsystem: Intel Corporation: Unknown device 2411 Flags: medium devsel, IRQ 11 I/O ports at ff38 [size=8] Memory at efdff000 (32-bit, non-prefetchable) [size=4K] Capabilities: [dc] Power Management version 2 0000:00:0c.0 Multimedia audio controller: Yamaha Corporation YMF-754 [DS-1E Audio Controller] Subsystem: Toshiba America Info Systems: Unknown device 0001 Flags: bus master, medium devsel, latency 64, IRQ 11 Memory at efdf0000 (32-bit, non-prefetchable) [size=32K] I/O ports at fec0 [size=64] I/O ports at febc [size=4] Capabilities: [50] Power Management version 1 0000:01:00.0 VGA compatible controller: S3 Inc. 86C270-294 Savage/IX-MV (rev 11) (prog-if 00 [VGA]) Subsystem: Toshiba America Info Systems 86C584 SuperSavage/IXC Toshiba Flags: bus master, 66MHz, medium devsel, latency 248, IRQ 11 Memory at f0000000 (32-bit, non-prefetchable) [size=128M] Expansion ROM at 20000000 [disabled] [size=64K] Capabilities: [dc] Power Management version 1 Capabilities: [80] AGP version 1.0 the PCMCIA controller was set up in the BIOS to be Intel PCIC compatible as Linux does not support the native ToPIC 9x controller. florin