'make -j16 universe' gives SIReset

[Peter Jeremy]

On 2011-Oct-11 22:55:43 +0200, Marius Strobl <marius at alchemy.franken.de> wrote:
>> I also ran 6 parallel -j16 buildworlds as a stress test and that was
>> less successful:
>> panic: mutex vm object not owned at /usr/src/sys/vm/vm_object.c:281
>
>That line should be in vm_object_clear_flag(). The backtrace seems to be
>incomplete as it doesn't include that function. I'm not sure what to make
>out of the "VNASSERT failed" and "tag ufs, type VDIR" lines. I guess this
>could mean that there were two panics at the same time. Does the crashdump
>provide a better backtrace?

Unfortunately, I can't get a crashdump because dumpon(8) doesn't like
my Solaris swap partitions:
GEOM_PART: Partition 'da0b' not suitable for kernel dumps (wrong type?)
GEOM_PART: Partition 'da6b' not suitable for kernel dumps (wrong type?)
No suitable dump device was found.

I did write a patch for that but took it out during some earlier
testing to get back to stock code.  It looks like I didn't PR it
either so I will do that when I get some time.

I don't understand the panic backtrace either.  Manually running
"where" gives saner output:
db> where
Tracing pid 1299 tid 100640 td 0xfffff8a346e8da40
panic() at panic+0x20c
_mtx_assert() at _mtx_assert+0xb0
vm_object_clear_flag() at vm_object_clear_flag+0x24
vmtotal() at vmtotal+0xa4
sysctl_root() at sysctl_root+0x234
userland_sysctl() at userland_sysctl+0x1cc
sys___sysctl() at sys___sysctl+0x70
syscall() at syscall+0x2d8
-- syscall (202, FreeBSD ELF64, sys___sysctl) %o7=0x10daac --
userland() at 0x4093c3a8
user trace: trap %o7=0x10daac
pc 0x4093c3a8, sp 0x7fdffffcdd1
pc 0x10dc58, sp 0x7fdffffcea1
pc 0x1050c0, sp 0x7fdffffcf71
pc 0x4089c6e0, sp 0x7fdffffd041
pc 0, sp 0x7fdffffd401
pc 0x403ab9a0, sp 0x7fdffffd561
pc 0x104980, sp 0x7fdffffd631
pc 0x105514, sp 0x7fdffffd751
pc 0x102790, sp 0x7fdffffe031
pc 0x4021b014, sp 0x7fdffffe0f1
done

I'm not sure how to access registers in another stack frame so I
can't find the offending vmobject.  I will need to shutdown that
box and will do some more digging next week.

-- 
Peter Jeremy
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