Re: sparc64 5.1_RC1 SMP crashes

[Chris Ross <cross+netbsd%distal.com@localhost>]

  Further research shows that this is due to running multiple  
compilations simultaneously, so it's an SMP issue.  If I run a pkgsrc  
build without setting MAKE_JOBS (to 3 in my use case), it seems to  
build just fine.  But, at one point I tried running a separate build  
of a separate package at the same time, and that *also* caused this  
sort of crash.

  The crashes noted below, I apologize for not mentioning at the  
time, were from single pkgsrc package builds, but with MAKE_JOBS set  
(to 3), and within a package that allows that to perform the intended  
build -j change.

                                   - Chris

On May 13, 2010, at 01:09, Chris Ross wrote:
> Twice this evening, while building packages from pkgsrc, I've had  
> the following two panics (at the same place) on my Quad-processor  
> E420R, which is using raidframe to RAID1 it's two scsi disk drives:
>
> This is a custom kernel, but I do have a netbsd.gdb to run against  
> it.  I think my /var/crash is full, so I'll have to fix that when it  
> comes back up, but.
>
> Anyone have any suggestions as to how to diagnose this one?
>
> Thanks...
>
>                                     - Chris
>
>
> panic: kernel diagnostic assertion "pmap_ctx(LIST_FIRST(&curcpu()- 
> >ci_pmap_ctxlist)) != 0" failed: file "/data/NetBSD/src-5/sys/arch/ 
> sparc64/sparc64/pmap.c", line 3168
> Begin traceback...
> End traceback...
> Frame pointer is at 0x11dbf181
> Call traceback:
> 1319340(11, 5, 0, 0, 1846800, 0, 11dbf251) fp = 11dbf251
> 1243a40(104, 0, ffff, 150f511, 1243780, 0, 11dbf311) fp = 11dbf311
> 1382fcc(1519100, 14a6540, 150e1f0, 150d880, c60, 104, 11dbf3e1) fp =  
> 11dbf3e1
> 131f150(14a6540, 150d880, c60, 150e1f0, 4093e750, 800, 11dbf4a1) fp  
> = 11dbf4a1
> 120ee04(11dd5700, 0, 0, 6, badcafe, badcafe, 11dbf561) fp = 11dbf561
> 100ab60(e0018000, 1210f420, 0, 18b5a80, badcafe, 11eb3bd0, 11dbf621)  
> fp = 11dbf621
> 409bfb10(0, badcafe, badcafe, badcafe, badcafe, badcafe,  
> ffffffffffff8b11) fp = ffffffffffff8b11
>
>
> panic: kernel diagnostic assertion "pmap_ctx(LIST_FIRST(&curcpu()- 
> >ci_pmap_ctxlist)) != 0" failed: file "/data/NetBSD/src-5/sys/arch/ 
> sparc64/sparc64/pmap.c", line 3168
> Begin traceback...
> End traceback...
> Frame pointer is at 0x1e2a2cd1
> Call traceback:
> 1319340(11, 5, 0, 0, 1846800, 0, 1e2a2da1) fp = 1e2a2da1
> 1243a40(104, 0, ffff, 150f511, 1243780, 0, 1e2a2e61) fp = 1e2a2e61
> 1382fcc(1519100, 14a6540, 150e1f0, 150d880, c60, 104, 1e2a2f31) fp =  
> 1e2a2f31
> 131f150(14a6540, 150d880, c60, 150e1f0, 1e2a3850, 6376600, 1e2a2ff1)  
> fp = 1e2a2ff1
> 11c9ae8(11daf640, ffffffffffffffff, 1e25f800, 404, 1814800, 100040,  
> 1e2a30b1) fp = 1e2a30b1
> 1205b7c(1200ca30, 0, ffffffffffffffff, 1e2a0000, 0, 112512a2,  
> 1e2a3171) fp = 1e2a3171
> 1323e4c(c, 0, 64, 11250000, 1205360, 4, 1e2a3511) fp = 1e2a3511
> 10092d4(1e2a3ed0, 1e2a3f58, 4053ede0, 0, 4053ede0, 800, 1e2a3621) fp  
> = 1e2a3621
> 10fa20(40818280, 4080fc00, 40810400, 1, 0, 4f4e53, ffffffffffff8791)  
> fp = ffffffffffff8791