Hello, The following oops occurs when udev loads p54pci driver (device is an early SM2802W V2 PCI with the isl3886 "softmac" chip; 2.6.28-rc7, firmware 2.13.1.0.arm). This is transcribed from a rather bad photo (please see http://mlau.at/pix/p54oops.jpg ): BUG: Unable to handle kernel NULL pointer dereference at 0000000000000000 IP: [<ffffffffa0016b66>] p54_rx+0xc6/0x490 [p54common] PGD 12e433067 PUD 12e46f067 PMD 0 Oops: 0000 [#1] PREEMPT SMP last sysfs file: /sys/devices/pci0000:00/0000:00:1f.2/host0/target0:0:0:0/.... CPU 0 Modules linked in: usb_storage ohci1394(+) ieee1394 p54pci(+) p54common ahci... Pid: 0, comm: swapper Not tainted 2.6.28-rc7-00091-gf6f7b52 #1 RIP: 0010:[<ffffffffa0016b66>] [<ffffffffa0016b66>] p54_rx+0xc6/0x490 [p54common] RSP: 0018:ffffffff80ab3df0 EFLAGS: 00010207 RAX: 0000000074e9fed0 RBX: ffff08012e4f1940 RCX: 0000000000002e10 RDX: 0000000000000000 RSI: 00000000000000f1 RDI: ffff80012e4f0000 RBP: ffff80012e077010 R08: ffff80012e077000 R09: ffff80012e04?000 R10: 0000000000000001 R11: ffffffff00221320 R12: ffff80012e4f1900 R13: ffff80012e4f0300 R14: 000000000000732e R15: ffff80012e4f19?? ... (gdb) list *p54_rx+0xc6 0x1b66 is in p54_rx (/usr/src/linux-2.6.git/drivers/net/wireless/p54/p54common.c:502). 497 498 rx_status.signal = p54_rssi_to_dbm(dev, hdr->rssi); 499 rx_status.noise = priv->noise; 500 /* XX correct? */ 501 rx_status.qual = (100 * hdr->rssi) / 127; 502 rx_status.rate_idx = (dev->conf.channel->band == IEEE80211_BAND_2GHZ ? 503 hdr->rate : (hdr->rate - 4)) & 0xf; 504 rx_status.freq = freq; 505 rx_status.band = dev->conf.channel->band; 506 rx_status.antenna = hdr->antenna; ... 0x0000000000001b59 <p54_rx+185>: add %ecx,%edx 0x0000000000001b5b <p54_rx+187>: sar $0x6,%edx 0x0000000000001b5e <p54_rx+190>: mov %edx,0x38(%rsp) 0x0000000000001b62 <p54_rx+194>: mov 0x20(%r13),%rdx 0x0000000000001b66 <p54_rx+198>: mov (%rdx),%eax 0x0000000000001b68 <p54_rx+200>: test %eax,%eax 0x0000000000001b6a <p54_rx+202>: je 0x1c70 <p54_rx+464> 0x0000000000001b70 <p54_rx+208>: movzbl 0x7(%rbp),%eax 0x0000000000001b74 <p54_rx+212>: sub $0x4,%eax 0x0000000000001b77 <p54_rx+215>: and $0xf,%eax 0x0000000000001b7a <p54_rx+218>: mov %eax,0x40(%rsp) ... Loading the module manually gets a bit further: p54pci 0000:05:01.0: PCI INT A -> GSI 17 (level, low) -> IRQ 17 p54pci 0000:05:01.0: firmware: requesting isl3886 p54: LM86 firmware p54: FW rev 2.13.1.0 - Softmac protocol 5.5 phy2: device does not respond! p54pci 0000:05:01.0: PCI INT A disabled p54pci: probe of 0000:05:01.0 failed with error -16 Thanks, Manuel Lauss -- To unsubscribe from this list: send the line "unsubscribe linux-wireless" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
