I'm using the at76c503a driver (0.14beta1, but it looks almost identical to a76c503a git) on Linux 2.6.18. I got the following kernel panic while using an AT76C503A card with firmware version 1.101.2 #84 (fcs_len 4). This happens almost immediately under heavy load in ad-hoc mode. It never happened when using the device on another box which had an OHCI USB controller, and I'm currently using an UHCI controller (but I wouldn't say this is related by any means). I tried to comment out the whole update_wstats() function, and the kernel doesn't panic anymore. BTW: is there any related development mailing list or IRC channel? I could be interested in development, in future. Here comes the panic message (I just copied the relevant information by hand, as I didn't set up netconsole, but I can do that if needed): PREEMPT Modules linked in: orinoco_cs orinoco hermes apm at76_usb snd_pcm_oss snd_mixer_oss xt_tcpudp ipt_MASQUERADE iptable_nat ip_nat ip_conntrack ip_tables x_tables ohci_hcd parport_pc parport crc_ccitt pcspkr pcmcia yenta_socket rsrc_nonstatic pcmcia_core ide_scsi scsi_mod CPU: 0 EIP 0060:[<c2ff61c3>] Not tainted VLI EFLAGS: 0010246 (2.6.18 #4) EIP is at update_wstats+0x83/0xc0 [at76_usb] Call Trace: rx_mgmt+0x9e/0x1180 [at76_usb] hcd_submit_urb+0x1c5/0x910 rx_tasklet+0x247/0x1660 [at76_usb] uhci_free_urb_priv+0x6e/0xb0 uhci_unlink_qh+0x66/0xd0 usb_free_urb+0x1c/0x20 uhci_giveback_urb+0xd0/0x1e0 kfree_skbmem+0x42/0xa0 at76c503_tx+0x404/0x590 [at76_usb] __qdisc_run+0x78/0x1f0 tasklet_action+0x3e/0x70 __do_softirq+0x42/0x90 do_softirq+0x26/0x30 irq_exit+0x35/0x40 do_IRQ+0x36/0x70 do_setitimer+0x52a/0x570 common_interrupt+0x1a/0x20 sys_select+0x3/0x1c0 sys_sigreturn+0xaf/0xc8 syscall_call+0x7/0xb EIP: [<c2ff61c3>] update_wstats+0x83/0xc0 [at76_usb] SS:ESP 0068:c0ba9d54 <0>Kernel panic - not syncing: Fatal exception in interrupt -- Ciao Stefano - 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
