Re: xhci panic

[Patrick Welche <prlw1%cam.ac.uk@localhost>]

On Fri, Jan 20, 2017 at 03:52:57PM +0000, Nick Hudson wrote:
> On 01/20/17 14:35, Patrick Welche wrote:
> >On Fri, Jan 20, 2017 at 02:10:24PM +0000, Nick Hudson wrote:
> >>On 01/20/17 11:50, Patrick Welche wrote:
> >>>On Fri, Jan 20, 2017 at 11:08:14AM +0000, Nick Hudson wrote:
> >>>>On 01/20/17 10:56, Patrick Welche wrote:
> >>>>>Just tried a this morning's kernel on amd64 (was looking forward to the
> >>>>>new xhci.c :-) ), and (laptop so no serial console):
> >>>>>
> >>>>>xhci0 at pci4 dev 0 function 0: NEC USB3 Houst Controller (rev. 0x04)
> >>>>>xhci0: interrupting at msi2 vec 0
> >>>>>uvm_fault(0x..., 0x0, 1) -> e
> >>>>>
> >>>>>Stopped in pid 0.1 (system) at netbsd:vmem_alloc
> >>>>>vmem_alloc
> >>>>>uvm_km_kmem_alloc
> >>>>>kmem_intr_alloc
> >>>>>kmem_intr_zalloc
> >>>>>xhci_init
> >>>>>xhci_pci_attach
> >>>>>...
> >>>>>mp_pci_scan
> >>>>>
> >>>>Can you boot with -x and send the output please
> >>>OK - going off-list!
> >>>
> >>>P
> >>can you show the full backtrace,e.g.
> >>
> >>Stopped in pid 0.1 (system) at netbsd:vmem_alloc+FOO
> >>
> >>need to know the source line of vmem_alloc+FOO is
> >(gdb) info line *(vmem_alloc+0x3e)
> >Line 1056 of "../../../../kern/subr_vmem.c"
> >    starts at address 0xffffffff8052efa2 <vmem_alloc+60>
> >    and ends at 0xffffffff8052efac <vmem_alloc+70>.
> >
> >      1  /*      $NetBSD: subr_vmem.c,v 1.95 2016/07/07 06:55:43 msaitoh Exp $   */
> >...
> >   1050  #if defined(QCACHE)
> >   1051          if (size <= vm->vm_qcache_max) {
> >   1052                  void *p;
> >   1053                  int qidx = (size + vm->vm_quantum_mask) >> vm->vm_quantum_shift;
> >   1054                  qcache_t *qc = vm->vm_qcache[qidx - 1];
> >   1055
> >   1056                  p = pool_cache_get(qc->qc_cache, vmf_to_prf(flags));
> >   1057                  if (addrp != NULL)
> >   1058                          *addrp = (vmem_addr_t)p;
> >   1059                  return (p == NULL) ? ENOMEM : 0;
> >   1060          }
> >   1061  #endif /* defined(QCACHE) */
> >
> >For more, it'll be easier to do later when I'm near a second computer...
> >(I can boot this laptop with boot -c, disable xhci, using an envelope as
> >memory...)
> >
> >Cheers,
> >
> >Patrick
> 
> Does this help?


It does indeed! Laptop boots!


(Well, sometimes it hangs after printing

drm: Enabling RC6 states: RC6 on, RC6p off, RC6pp off

The next line would be

wd0 at atabus0 drive 0

I hope the drive isn't about to die... Just started after a source
update on Wednesday 18 Jan)


Thanks,

Patrick