On Saturday 22 December 2012 13:59:11 Dimitry Andric wrote: > On 2012-12-22 12:11, Andriy Gapon wrote: > > on 21/12/2012 18:38 Hans Petter Selasky said the following: > >> I've built a 10-current i386 kernel as of today, and I see double fault > >> when USB audio is allocating memory. Anyone knows why? > >> > >> kdb_enter() > >> vpanic() > >> panic() > >> dblfault_handler() > >> vm_map_lookup() > >> vm_fault_hold() > >> vm_fault() > >> vm_fault_wire() > >> vm_map_wire() > >> kmem_alloc_attr(xxx, 0x4000,2,0,0xffffffff) > >> bus_dmamem_alloc() > >> usb_pc_alloc_mem() > > > > I suspect that this double fault may have nothing to do with the thread > > to which you followed up. > > > > You need to obtain full debug information to answer your question. > > Specifically interesting are the stack frame addresses, which Kostik has > added recently. From these, you can easily see whether the double fault > is due to stack exhaustion (which seems unlikely with such a small call > stack), or to something else.
Hi, It was due to running out of stack. I've fixed it in -current. --HPS _______________________________________________ freebsd-current@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-current To unsubscribe, send any mail to "freebsd-current-unsubscr...@freebsd.org"
