I am seeing the same USB problem but without the SLAB errors - [1] is the Gentoo bug report. The kernel boots fine with both USB keyboard and mouse detached. [17179609.760000] usb 1-2: configuration #1 chosen from 1 choice [17179609.860000] input: Kensington Kensington USB/PS2 Trackball as /class/inpu1 [17179609.972000] Backtrace: [17179609.972000] [<101daa9c>] sysfs_find_dirent+0x34/0x50 [17179609.972000] [<101daad8>] __sysfs_add_one+0x20/0xc0 [17179609.972000] [<101dab8c>] sysfs_add_one+0x14/0x50 [17179609.972000] [<101db250>] create_dir+0x64/0xcc [17179609.972000] [<101db2e4>] sysfs_create_dir+0x2c/0x5c [17179609.972000] [<102f2cd0>] kobject_add_internal+0xb8/0x1b0 [17179609.972000] [<102f326c>] kobject_add+0x38/0x68 [17179609.972000] [<1035b2b0>] device_add+0xdc/0x55c [17179609.972000] [<103d6930>] mousedev_create+0x17c/0x1f8 [17179609.972000] [<103d7284>] mousedev_connect+0x48/0x138 [17179609.972000] [<103d2b50>] input_attach_handler+0x6c/0xac [17179609.972000] [<103d5014>] input_register_device+0x1a4/0x250 [17179609.972000] [<103dfe08>] hidinput_connect+0x308/0x3b40 [17179609.972000] [<103de5d4>] hid_connect+0x22c/0x2c0 [17179609.972000] [<103de740>] hid_device_probe+0xd8/0xfc [17179609.972000] [<1035db94>] driver_probe_device+0xa4/0x198 [17179609.972000] [17179609.972000] [17179609.972000] Kernel Fault: Code=26 regs=8f86d0c0 (Addr=00000000) [17179609.972000] [17179609.972000] YZrvWESTHLNXBCVMcbcbcbcbOGFRQPDI [17179609.972000] PSW: 00000000000001001111111000001111 Not tainted [17179609.972000] r00-03 0004fe0f 105a8e50 101daa9c 8ecef000 [17179609.972000] r04-07 8f8d4d70 fffffff4 8f296f60 8f86cf48 [17179609.972000] r08-11 8f297ac8 8ec37000 8f293e90 00000008 [17179609.972000] r12-15 00000006 00000001 00000002 00000003 [17179609.972000] r16-19 8ec37000 fffeffff fffeff70 00000073 [17179609.972000] r20-23 00000006 0000000f 000003e0 8f296f60 [17179609.972000] r24-27 101da714 8f8d4d70 00000000 105a8650 [17179609.972000] r28-31 8ecef000 156979c9 8f86d0c0 101a0274 [17179609.972000] sr00-03 00000000 00000000 00000000 0000000c [17179609.972000] sr04-07 00000000 00000000 00000000 00000000 [17179609.972000] [17179609.972000] IASQ: 00000000 00000000 IAOQ: 102f6a50 102f6a54 [17179609.972000] IIR: 0f40101c ISR: 00000000 IOR: 00000000 [17179609.972000] CPU: 0 CR30: 8f86c000 CR31: 11111111 [17179609.972000] ORIG_R28: 0000000f [17179609.972000] IAOQ[0]: strcmp+0x0/0x34 [17179609.972000] IAOQ[1]: strcmp+0x4/0x34 [17179609.972000] RP(r2): sysfs_find_dirent+0x34/0x50 [17179609.972000] Backtrace: [17179609.972000] [<101daa9c>] sysfs_find_dirent+0x34/0x50 [17179609.972000] [<101daad8>] __sysfs_add_one+0x20/0xc0 [17179609.972000] [<101dab8c>] sysfs_add_one+0x14/0x50 [17179609.972000] [<101db250>] create_dir+0x64/0xcc [17179609.972000] [<101db2e4>] sysfs_create_dir+0x2c/0x5c [17179609.972000] [<102f2cd0>] kobject_add_internal+0xb8/0x1b0 [17179609.972000] [<102f326c>] kobject_add+0x38/0x68 [17179609.972000] [<1035b2b0>] device_add+0xdc/0x55c [17179609.972000] [<103d6930>] mousedev_create+0x17c/0x1f8 [17179609.972000] [<103d7284>] mousedev_connect+0x48/0x138 [17179609.972000] [<103d2b50>] input_attach_handler+0x6c/0xac [17179609.972000] [<103d5014>] input_register_device+0x1a4/0x250 [17179609.972000] [<103dfe08>] hidinput_connect+0x308/0x3b40 [17179609.972000] [<103de5d4>] hid_connect+0x22c/0x2c0 [17179609.972000] [<103de740>] hid_device_probe+0xd8/0xfc [17179609.972000] [<1035db94>] driver_probe_device+0xa4/0x198 [17179609.972000] [17179609.972000] Kernel panic - not syncing: Kernel Fault Kind regards, JeR [1] https://bugs.gentoo.org/show_bug.cgi?id=245001 -- To unsubscribe from this list: send the line "unsubscribe linux-parisc" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html