> Here's what I get from ksymoops > > ---- > Warning (compare_maps): ksyms_base symbol > vmalloc_to_page_R__ver_vmalloc_to_page not found in System.map. > Ignoring ksyms_base entry > Unable to handle kernel NULL pointer dereference at virtual > address 00000020 > c01e52e4 > *pde = 00000000 > CPU: 0 > EIP: 0010:[<c01e52e4>] Not tainted > Using defaults from ksymoops -t elf32-i386 -a i386 > EFLAGS: 00010097 > eax: cf21cc84 ebx: cf21c480 ecx: d7efd3fc edx: cf21c484 > esi: 00000000 ed1: 00000097 ebp: cf21cc84 esp: c0287f38 > Warning (Oops_set_regs): garbage 'ed1: 00000097 ebp: cf21cc84 > esp: c0287f38' at end of register line ignored > ds: 0018 es: 0018 ss:0018 > Process swapper (pid: 0, stackpage=c0287000) > Stack: 00000292 d7efd3fc 00000000 0000cc00 d7efd380 c0287fac c01e535b5 > d7efd380 > d7efd380 d7eede80 04000001 0000000b c0109e8a 0000000b d7efd380 > c0287fac > c0287fac 0000000b c02bee80 d7eede80 c010a018 0000000b c0287fac > d7eede80 > Call Trace: [<c01e53b5>] [<c0109e8a>] [<c010a018>] [<c0106f10>] > [<c0106f10>] > [<c010c108>] [<c0106f10>] [<c0106f36>] {<c0106fc2>] [<c0105000>] > Code: c7 46 20 98 ff ff ff 8b 43 10 8b 1b 80 b8 00 00 00 8b 48 > > > >>EIP; c01e52e4 <uhci_remove_pending_qhs+44/90> <===== >
the Tascam US-428 driver (copied / changed from snd-usb-audio ) showed a similar problem. I worked around it by not using ASYNC_UNLINKing of the urbs. uhci_remove_pending_qhs is called to unlink urbs in ASYNC mode. seems as if uhci has a bug ? or may we asyncly unlink only 1 urb at a time? any experiences with kernels > 2.4.18 ? Karsten __________________________________________________________________ Gesendet von Yahoo! Mail - http://mail.yahoo.de Möchten Sie mit einem Gruß antworten? http://grusskarten.yahoo.de ------------------------------------------------------- This sf.net email is sponsored by: OSDN - Tired of that same old cell phone? Get a new here for FREE! https://www.inphonic.com/r.asp?r=sourceforge1&refcode1=vs3390 _______________________________________________ Alsa-devel mailing list [EMAIL PROTECTED] https://lists.sourceforge.net/lists/listinfo/alsa-devel