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Date:      Sun, 11 Nov 2018 17:50:57 -0800
From:      Mark Millard <marklmi@yahoo.com>
To:        Kyle Evans <kevans@freebsd.org>
Cc:        Sean Bruno <sbruno@freebsd.org>, ports-list freebsd <freebsd-ports@freebsd.org>
Subject:   Re: ports -r484565 : qemu-arm-static fails with: (start < end): backtrace included; start+len arithmetic overflow (abi_ulong wrap) for TARGET_FREEBSD_NR_mmap use
Message-ID:  <570ED02C-1AC6-4333-B160-F2AC3963D868@yahoo.com>
In-Reply-To: <CACNAnaEtU1P_XMsgf-xRzd-vJuEaGTrvbSW=ZvxdLdqh9OjcYA@mail.gmail.com>
References:  <783DE9B1-F1F5-45B5-8C3E-0B0D8BF4CC03@yahoo.com> <eeaa53e1-0d2c-f8d1-7d99-d82c7cffb9cb@freebsd.org> <C18EF212-7C23-4FFB-B0A0-49DAEF87705C@yahoo.com> <04F7FF99-96DE-4A51-B17F-7F2FEE667417@yahoo.com> <B680E29F-7E04-447B-8A17-D0C82B521998@yahoo.com> <CACNAnaGNUOEcSsTuZk-sb4976Y25kgQ87H8PGn9UAUGNUo97kw@mail.gmail.com> <AF2D0AA0-A1BD-4C5D-843A-3280D1BE1309@yahoo.com> <CACNAnaG%2Bqpi5BAwL1EHPB=17Vu2Uikb_4mAC67jtoLaS%2Bv4DXA@mail.gmail.com> <7F3A94B8-C6E9-42D5-A5DF-94BF910B1D0C@yahoo.com> <09E0609A-B10E-4D00-89D2-4E102C4F3537@yahoo.com> <CACNAnaEtU1P_XMsgf-xRzd-vJuEaGTrvbSW=ZvxdLdqh9OjcYA@mail.gmail.com>

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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@yahoo.com> =
wrote:
>>=20
>> I attached with gdb in order to stop at the assert and look around.
>>=20
>>=20
>>=20
>> The following is a backtrace with notes and prints mixed in:
>>=20
>> (gdb) bt
>> #0  thr_kill () at thr_kill.S:3
>> #1  0x000000006028a21f in __raise (s=3D6) 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=3D<optimized out>, =
file=3D<optimized out>, line=3D<optimized out>, failedexpr=3D<optimized =
out>) at /usr/src/lib/libc/gen/assert.c:51
>>=20
>> Note end=3D=3D37146624 below vs. start (37146624 will show up again =
in later notes)
>>=20
>> #4  0x0000000060036243 in page_set_flags (start=3D4143968256, =
end=3D37146624, flags=3D9) at =
/wrkdirs/usr/ports/emulators/qemu-user-static/work/qemu-bsd-user-2cb0cdd/a=
ccel/tcg/translate-all.c:2077
>>=20
>> Note start and len below:
>>=20
>> #5  0x000000006003df2b in target_mmap (start=3D4143968256, =
len=3D188145664, prot=3D<optimized out>, flags=3D<optimized out>, =
fd=3D<optimized out>, offset=3D<optimized out>)
>>    at =
/wrkdirs/usr/ports/emulators/qemu-user-static/work/qemu-bsd-user-2cb0cdd/b=
sd-user/mmap.c:626
>>=20
>> (gdb) print/x start
>> $5 =3D 0xf6fff000
>> (gdb) print/x len
>> $6 =3D 0xb36e000
>>=20
>> Note start+len for the above (without wrapping):
>>=20
>> (gdb) print/x (long long)start + (long long)len
>> $10 =3D 0x10236d000
>> (gdb) print (long long)start + (long long)len
>> $11 =3D 4332113920
>>=20
>> With wrapping:
>>=20
>> (gdb) print/x start+len
>> $8 =3D 0x236d000
>> (gdb) print start+len
>> $9 =3D 37146624
>>=20
>> And there is end's value again.
>>=20
>=20
> Hi,
>=20
> 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.

=3D=3D=3D
Mark Millard
marklmi at yahoo.com
( dsl-only.net went
away in early 2018-Mar)




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