ports -r484565 : qemu-arm-static fails with: (start < end): backtrace included; start+len arithmetic overflow (abi_ulong wrap) for TARGET_FREEBSD_NR_mmap use

[Mark Millard]

On 2018-Nov-11, at 17:43, Kyle Evans <kevans at freebsd.org> wrote:

> On Sun, Nov 11, 2018 at 5:24 AM Mark Millard <marklmi at yahoo.com> wrote:
>> 
>> I attached with gdb in order to stop at the assert and look around.
>> 
>> 
>> 
>> The following is a backtrace with notes and prints mixed in:
>> 
>> (gdb) bt
>> #0  thr_kill () at thr_kill.S:3
>> #1  0x000000006028a21f in __raise (s=6) at /usr/src/lib/libc/gen/raise.c:52
>> #2  0x0000000060204949 in abort () at /usr/src/lib/libc/stdlib/abort.c:67
>> #3  0x000000006027855a in __assert (func=<optimized out>, file=<optimized out>, line=<optimized out>, failedexpr=<optimized out>) at /usr/src/lib/libc/gen/assert.c:51
>> 
>> Note end==37146624 below vs. start (37146624 will show up again in later notes)
>> 
>> #4  0x0000000060036243 in page_set_flags (start=4143968256, end=37146624, flags=9) at /wrkdirs/usr/ports/emulators/qemu-user-static/work/qemu-bsd-user-2cb0cdd/accel/tcg/translate-all.c:2077
>> 
>> Note start and len below:
>> 
>> #5  0x000000006003df2b in target_mmap (start=4143968256, len=188145664, prot=<optimized out>, flags=<optimized out>, fd=<optimized out>, offset=<optimized out>)
>>    at /wrkdirs/usr/ports/emulators/qemu-user-static/work/qemu-bsd-user-2cb0cdd/bsd-user/mmap.c:626
>> 
>> (gdb) print/x start
>> $5 = 0xf6fff000
>> (gdb) print/x len
>> $6 = 0xb36e000
>> 
>> Note start+len for the above (without wrapping):
>> 
>> (gdb) print/x (long long)start + (long long)len
>> $10 = 0x10236d000
>> (gdb) print (long long)start + (long long)len
>> $11 = 4332113920
>> 
>> With wrapping:
>> 
>> (gdb) print/x start+len
>> $8 = 0x236d000
>> (gdb) print start+len
>> $9 = 37146624
>> 
>> And there is end's value again.
>> 
> 
> Hi,
> 
> This should be fixed as of ports r484702; please do try this and let
> us know how it goes.

I've updated ports to -r484783 and an amd64 -> armv7
poudriere-devel/qemu-user-static cross-build is in
progress. devel/cmake completed fine, overall about
63 ports have. The 1 port failure is not tied to
qemu-arm-static issues.

It will be hours before lang/gcc8 would finish. There
are somewhat over 70 ports to go overall.

So far so good.

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