Re: Another pmap panic

[Andrew Doran <ad%netbsd.org@localhost>]

Hi,

I meant to send a note yesterday but fatigue got the better of me.  

I suggest updaing to the latest, delivered yesterday, which has fixes for
every problem I have encountered or seen mentioned including this one, and
survives low memory stress testing for me:

/*	$NetBSD: pmap.c,v 1.378 2020/03/19 18:58:14 ad Exp $	*/

Thank you,
Andrew

On Fri, Mar 20, 2020 at 05:49:59PM +0000, Chavdar Ivanov wrote:
> Hi,
> 
> Overnight, while doing pkg_rolling-replace, my 'server' got:
> ...
> panic: kernel diagnostic assertion "ptp->wire_count == 1" failed: file
>       "/home/sysbuild/src/sys/arch/x86/x86/pmap.c", line 2232
> 
> cpu0: Begin traceback...
> vpanic() at netbsd:vpanic+0x178
> kern_assert() at netbsd:kern_assert+0x48
> pmap_unget_ptp() at netbsd:pmap_unget_ptp+0x1f1
> pmap_get_ptp() at netbsd:pmap_get_ptp+0x300
> pmap_enter_ma() at netbsd:pmap_enter_ma+0x6fb
> pmap_enter_default() at netbsd:pmap_enter_default+0x29
> uvm_fault_internal() at netbsd:uvm_fault_internal+0xf2e
> trap() at netbsd:trap+0x50a
> --- trap (number 6) ---
> 7f7eec2007e0:
> cpu0: End traceback...
> 
> dumping to dev 168,2 (offset=8, size=5225879):
> ...
> 
> 
> -- 
> ----