Compilation x11/libX11 fails with panic

Wed Nov 19 13:01:05 UTC 2014

After the last crash the system compiled
editors/texworks without problems (uptime ca. 18 hours)
with superpages disabled:

root at quad:/usr/home/gwgpi # sysctl vm.pmap.
vm.pmap.sp_enabled: 0
vm.pmap.pv_entry_count: 10917
vm.pmap.pv_entry_max: 1744848
vm.pmap.shpgperproc: 200
vm.pmap.section.demotions: 0
vm.pmap.section.mappings: 0
vm.pmap.section.p_failures: 0
vm.pmap.section.promotions: 0
root at quad:/usr/home/gwgpi # 

In the following I have done:

make -j10 buildworld in /usr/src

The system crashes after ca. 1 hour.
I tryed to get a coredump, but that did not work:

vm_fault(0xc75dc4f0, 0, 1, 0) -> 0

Fatal kernel mode data abort: 'Translation Fault (P)'

trapframe: 0xfb289cb0

FSR=00000017, FAR=00000008, spsr=200000d3

r0 =00000000, r1 =00000001, r2 =000000ac, r3 =000000ac

r4 =fb289d94, r5 =00000000, r6 =00000000, r7 =00000014

r8 =000006c0, r9 =c25ab8c0, r10=0000
0
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5
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=Ffabt2a8l9 dk0e0r,n esll rm=ocd2e4 6dda1tfac ,a bpocr t=:c
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on Fault (P)'

trapframe: 0xf4920d40

FSR=00000017, FAR=00000000, spsr=600001d3

r0 =00000000, r1 =00000001, r2 =c6f64680, r3 =c25ab8d0

r4 =00000000, r5 =c6f64680, r6 =0000000b, r7 =00000000

r8 =c25ba41c, r9 =c6f64680, r10=c6f64990, r11=f4920de0

r12=00000001, ssp=f4920d94, slr=c21d09ac, pc =c2187f84

timeout stopping cpus

[ thread pid 87965 tid 100174 ]

Stopped at      $a+0x148:       ldr     r1, [r0, #0x008]

db> timeout stopping cpus

[ thread pid 11 tid 100007 ]

Stopped at      thread_lock_block+0xc:  ldr     r1, [r0]

db> d

db> qum

No such command

db> p

c2187f84

db> u

Ambiguous

db> dputm

No such command

db> p[A  

c2187f84

db> 

c2187f84

db> [A [ [A [ [A

Bad character

?

db> 

c218c72f8148
7
f8d4b
>
 db> q

No such command

db> cpasl la udxo

No such command

db> adduummpp

No such command

db> 
d

Not set.

db> duummpp

No such command

db> 

Not set.

db> dd uu m

vm_fault(0xc25b9658, 0, 1, 0) -> 0

Fatal kernel mode data abort: 'Translation Fault (P)'

trapframe: 0xf4920d40

FSR=00000017, FAR=00000000, spsr=600001d3

r0 =00000000, r1 =00000001, r2 =c6f64680, r3 =c25ab8d0

r4 =00000000, r5 =c6f64680, r6 =0000000b, r7 =00000000

r8 =c25ba41c, r9 =c6f64680, r10=c6f64990, r11=f4920de0

r12=00000001, ssp=f4920d94, slr=c21d09ac, pc =c2187f84

panic: Fatal abort

cpuid = 0

KDB: stack backtrace:

db_trace_self() at db_trace_self

         pc = 0xc246968c  lr = 0xc20435f0 (db_trace_self_wrapper+0x30)

         sp = 0xf4920b00  fp = 0xf4920c18

        r10 = 0xc6f64680

db_trace_self_wrapper() at db_trace_self_wrapper+0x30

         pc = 0xc20435f0  lr = 0xc21e3d14 (kdb_backtrace+0x38)

         sp = 0xf4920c20  fp = 0xf4920c28

         r4 = 0xc25ad634  r5 = 0xc24e1e8a

         r6 = 0x00000001  r7 = 0xc259e310

kdb_backtrace() at kdb_backtrace+0x38

         pc = 0xc21e3d14  lr = 0xc219f68c (panic+0x124)

         sp = 0xf4920c30  fp = 0xf4920c50

         r4 = 0x00000100

panic() at panic+0x124

         pc = 0xc219f68c  lr = 0xc24814e0 ($d)

         sp = 0xf4920c68  fp = 0xf4920c80

         r4 = 0xf4920d40  r5 = 0x00000017

         r6 = 0x600001d3  r7 = 0x00000000

         r8 = 0xf4920d40  r9 = 0x00000017

        r10 = 0x00000000

$d() at $d

         pc = 0xc24814e0  lr = 0xc248127c (data_abort_handler+0x560)

         sp = 0xf4920c88  fp = 0xf4920d38

         r4 = 0x00000013  r5 = 0xc6f64680

         r6 = 0xf4920eb0  r7 = 0x00000000

data_abort_handler() at data_abort_handler+0x560

         pc = 0xc248127c  lr = 0xc246b44c (exception_exit)

         sp = 0xf4920d40  fp = 0xf4920de0

         r4 = 0x00000000  r5 = 0xc6f64680

         r6 = 0x0000000b  r7 = 0x00000000

         r8 = 0xc25ba41c  r9 = 0xc6f64680

        r10 = 0xc6f64990

exception_exit() at exception_exit

         pc = 0xc246b44c  lr = 0xc21d09ac (sched_switch+0x3fc)

         sp = 0xf4920d94  fp = 0xf4920de0

         r0 = 0x00000000  r1 = 0x00000001

         r2 = 0xc6f64680  r3 = 0xc25ab8d0

         r4 = 0x00000000  r5 = 0xc6f64680

         r6 = 0x0000000b  r7 = 0x00000000

         r8 = 0xc25ba41c  r9 = 0xc6f64680

        r10 = 0xc6f64990 r12 = 0x00000001

thread_lock_block() at thread_lock_block+0xc

         pc = 0xc2187f84  lr = 0xc21aa4b4 (mi_switch+0x12c)

         sp = 0xf4920de8  fp = 0xf4920e00

         r4 = 0x00000000

mi_switch() at mi_switch+0x12c

         pc = 0xc21aa4b4  lr = 0xc21662a4 (ithread_loop+0x18c)

         sp = 0xf4920e08  fp = 0xf4920e38

         r4 = 0xc6e19eb0  r5 = 0xc6f64680

         r6 = 0xc6e39900  r7 = 0xc6e39970

         r8 = 0xc256aaf0  r9 = 0x00000000

ithread_loop() at ithread_loop+0x18c

         pc = 0xc21662a4  lr = 0xc216245c (fork_exit+0xa4)

         sp = 0xf4920e40  fp = 0xf4920e58

         r4 = 0xc6f64680  r5 = 0xc6f62000

         r6 = 0xc2166118  r7 = 0xc6e19eb0

         r8 = 0xf4920e60  r9 = 0x00000000

        r10 = 0x00000000

fork_exit() at fork_exit+0xa4

         pc = 0xc216245c  lr = 0xc246b3dc (swi_exit)

         sp = 0xf4920e60  fp = 0x00000000

         r4 = 0xc2166118  r5 = 0xc6e19eb0

         r6 = 0x00000000  r7 = 0x00000000

         r8 = 0x00000000

swi_exit() at swi_exit

         pc = 0xc246b3dc  lr = 0xc246b3dc (swi_exit)

         sp = 0xf4920e60  fp = 0x00000000

Uptime: 19h16m19s

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Stopped at	thread_lock_block+0x4c:	ldmea	r13!,
{r4, r11, r15}

db> p

c2187fc4

db> 

c2187fc4

db> panic

panic: from debugger

cpuid = 0

KDB: enter: panic

After 42 instructions (0 loads, 0 stores),

[ thread pid 11 tid 100007 ]

Stopped at      $d:     ldrb    r15, [r15, r15, ror r15]!

db> dump

Physical memory: 2040 MB

Dumping 145 MB:
----------------------------------------------------------------
On Tue, 18 Nov 2014 11:27:28 -0700
Ian Lepore <ian at FreeBSD.org> wrote:

> On Tue, 2014-11-18 at 19:16 +0100, Ulrich Grey wrote:
> > I am trying to compile x11/libX11 with a Wandboard-Quad:
> > 
> > FreeBSD 11.0-CURRENT #0 r274634M: Tue Nov 18 00:44:36 UTC 2014
> >     gwgpi at quad:/usr/local/DEVEL/obj/usr/local/DEVEL/SRC/head/sys/WANDBOARD-QUAD
> > arm
> > FreeBSD clang version 3.4.1 (tags/RELEASE_34/dot1-final 208032)
> > 20140512 CPU: Cortex A9-r2 rev 10 (Cortex-A core)
> >  Supported features: ARM_ISA THUMB2 JAZELLE THUMBEE ARMv4
> > Security_Ext
> > 
> > The compilation fails with this message:
> > 
> > --- XKBGeom.lo
> > ---  CC
> > XKBGeom.lo
> > --- XKBSetGeom.lo
> > ---  CC
> > XKBSetGeom.lo <jemalloc>: jemalloc_arena.c:600: Failed assertion:
> > "arena_mapbits_unzeroed_get(chunk, i) == unzeroed"  
> [...]
> 
> I'm curious whether the workaround mentioned recently by Jurgen Weiss
> also works for you, that is, setting:
> 
>  vm.pmap.sp_enabled=0
> 
> in loader.conf or using sysctl.  It's not a fix of course, but it
> might help you make progress, and it would be a clue where we should
> start looking for trouble.
> 
> -- Ian
> 
> 