On 2020-Jun-11, at 14:42, Justin Hibbits <chmeeedalf at gmail.com> wrote:

On Thu, 11 Jun 2020 14:36:37 -0700
Mark Millard <mark...@yahoo.com> wrote:

> On 2020-Jun-11, at 13:55, Justin Hibbits <chmeeedalf at gmail.com>
> wrote:
> 
>> On Wed, 10 Jun 2020 18:56:57 -0700
>> Mark Millard <mark...@yahoo.com> wrote:
. . .
> 
> 
>> That said, the attached patch effectively copies
>> what's done in OEA6464 into OEA pmap.  Can you test it?  
> 
> I'll try it once I get a chance, probably later
> today.
> . . .

No luck at the change being a fix, I'm afraid.

I verified that the build ended up with

00926cb0 <moea_protect+0x2ec> bl      008e8dc8 <PHYS_TO_VM_PAGE>
00926cb4 <moea_protect+0x2f0> mr      r27,r3
00926cb8 <moea_protect+0x2f4> addi    r3,r3,36
00926cbc <moea_protect+0x2f8> hwsync
00926cc0 <moea_protect+0x2fc> lwarx   r25,0,r3
00926cc4 <moea_protect+0x300> li      r4,0
00926cc8 <moea_protect+0x304> stwcx.  r4,0,r3
00926ccc <moea_protect+0x308> bne-    00926cc0 <moea_protect+0x2fc>
00926cd0 <moea_protect+0x30c> andi.   r3,r25,128
00926cd4 <moea_protect+0x310> beq     00926ce0 <moea_protect+0x31c>
00926cd8 <moea_protect+0x314> mr      r3,r27
00926cdc <moea_protect+0x318> bl      008e9874 <vm_page_dirty_KBI>

in the installed kernel. So I doubt a
mis-build would be involved. It is a
head -r360311 based context still. World is
without MALLOC_PRODUCTION so that jemalloc
code executes its asserts, catching more
and earlier than otherwise.

First test . . .

The only thing that the witness kernel reported was:

Jun 11 15:58:16 FBSDG4S2 kernel: lock order reversal:
Jun 11 15:58:16 FBSDG4S2 kernel:  1st 0x216fb00 Mountpoints (UMA zone) @ 
/usr/src/sys/vm/uma_core.c:4387
Jun 11 15:58:16 FBSDG4S2 kernel:  2nd 0x1192d2c kernelpmap (kernelpmap) @ 
/usr/src/sys/powerpc/aim/mmu_oea.c:1524
Jun 11 15:58:16 FBSDG4S2 kernel: stack backtrace:
Jun 11 15:58:16 FBSDG4S2 kernel: #0 0x5ec164 at witness_debugger+0x94
Jun 11 15:58:16 FBSDG4S2 kernel: #1 0x5ebe3c at witness_checkorder+0xb50
Jun 11 15:58:16 FBSDG4S2 kernel: #2 0x536d5c at __mtx_lock_flags+0xcc
Jun 11 15:58:16 FBSDG4S2 kernel: #3 0x92636c at moea_kextract+0x5c
Jun 11 15:58:16 FBSDG4S2 kernel: #4 0x965d30 at pmap_kextract+0x98
Jun 11 15:58:16 FBSDG4S2 kernel: #5 0x8bfdbc at zone_release+0xf0
Jun 11 15:58:16 FBSDG4S2 kernel: #6 0x8c7854 at bucket_drain+0x2f0
Jun 11 15:58:16 FBSDG4S2 kernel: #7 0x8c728c at bucket_free+0x54
Jun 11 15:58:16 FBSDG4S2 kernel: #8 0x8c74fc at bucket_cache_reclaim+0x1bc
Jun 11 15:58:16 FBSDG4S2 kernel: #9 0x8c7004 at zone_reclaim+0x128
Jun 11 15:58:16 FBSDG4S2 kernel: #10 0x8c3a40 at uma_reclaim+0x170
Jun 11 15:58:16 FBSDG4S2 kernel: #11 0x8c3f70 at uma_reclaim_worker+0x68
Jun 11 15:58:16 FBSDG4S2 kernel: #12 0x50fbac at fork_exit+0xb0
Jun 11 15:58:16 FBSDG4S2 kernel: #13 0x9684ac at fork_trampoline+0xc

The processes that were hit were listed as:

Jun 11 15:59:11 FBSDG4S2 kernel: pid 971 (cron), jid 0, uid 0: exited on signal 
11 (core dumped)
Jun 11 16:02:59 FBSDG4S2 kernel: pid 1111 (stress), jid 0, uid 0: exited on 
signal 6 (core dumped)
Jun 11 16:03:27 FBSDG4S2 kernel: pid 871 (mountd), jid 0, uid 0: exited on 
signal 6 (core dumped)
Jun 11 16:03:40 FBSDG4S2 kernel: pid 1065 (su), jid 0, uid 0: exited on signal 6
Jun 11 16:04:13 FBSDG4S2 kernel: pid 1088 (su), jid 0, uid 0: exited on signal 6
Jun 11 16:04:28 FBSDG4S2 kernel: pid 968 (sshd), jid 0, uid 0: exited on signal 
6

Jun 11 16:05:42 FBSDG4S2 kernel: pid 1028 (login), jid 0, uid 0: exited on 
signal 6

Jun 11 16:05:46 FBSDG4S2 kernel: pid 873 (nfsd), jid 0, uid 0: exited on signal 
6 (core dumped)


Rebooting and rerunning and showing the stress output and such
(I did not capture copies during the first test, but the first
test had similar messages at the same sort of points):

Second test . . .

# stress -m 2 --vm-bytes 1700M
stress: info: [1166] dispatching hogs: 0 cpu, 0 io, 2 vm, 0 hdd
<jemalloc>: 
/usr/src/contrib/jemalloc/include/jemalloc/internal/arena_inlines_b.h:258: 
Failed assertion: "slab == extent_slab_get(extent)"
<jemalloc>: 
/usr/src/contrib/jemalloc/include/jemalloc/internal/arena_inlines_b.h:258: 
Failed assertion: "slab == extent_slab_get(extent)"
^C

# exit
<jemalloc>: /usr/src/contrib/jemalloc/include/jemalloc/internal/sz.h:200: 
Failed assertion: "ret == sz_index2size_compute(index)"
Abort trap

The other stuff was similar to to first test, not repeated here.

===
Mark Millard
marklmi at yahoo.com
( dsl-only.net went
away in early 2018-Mar)

_______________________________________________
svn-src-head@freebsd.org mailing list
https://lists.freebsd.org/mailman/listinfo/svn-src-head
To unsubscribe, send any mail to "svn-src-head-unsubscr...@freebsd.org"

Reply via email to