Date: Tue, 21 May 2024 13:05:16 +0300 From: Odhiambo Washington <odhiambo@gmail.com> To: questions@freebsd.org Cc: tetrosalame <tml@seiruote.it>, Jim Pazarena <fquest@paz.bz> Subject: Re: FBSD 14.0 / exim 4,97.1 - exim SIGSEGV Message-ID: <CAAdA2WPBrt0NR5rcDOM=Qd74Y1BEs4KniaJSMzA_epthHU5YYQ@mail.gmail.com> In-Reply-To: <11e6f1c6-d377-4ab1-b087-041db6cec179@seiruote.it> References: <7c7f0ddf-6e2e-4954-a712-018fc790c8df@paz.bz> <11e6f1c6-d377-4ab1-b087-041db6cec179@seiruote.it>
next in thread | previous in thread | raw e-mail | index | archive | help
--0000000000009906c20618f3f671
Content-Type: text/plain; charset="UTF-8"
Content-Transfer-Encoding: quoted-printable
On Sun, May 19, 2024 at 7:24=E2=80=AFPM tetrosalame <tml@seiruote.it> wrote=
:
> Il 19/05/2024 16:46, Jim Pazarena ha scritto:
> > I upgraded both of the captioned versions at the same time, so it is no=
t
> > clear to me which is causing this issue.. however, since upgrading,
> > often but without any discernible cycle or frequency, exim refuses
> > incoming connections, and logs the following:
> >
> > 2024-05-19 07:21:00 SIGSEGV (fault address: 0xffffffffffffff70)
> > 2024-05-19 07:21:00 SIGSEGV (maybe attempt to write to immutable memory=
)
>
> Maybe exim is violating some policy?
> What does sysctl kern.elf${your_arch}.allow_wx say?
>
> FreeBSD14 features some pretty memory protections: see mitigations(7).
> Bye,
> f
>
I am running the same version of Exim on the same version of FreeBSD (on
two different servers, no custom kernel) and I haven't seen these symptoms.
If anything, here is the output of what you asked:
``
wash@gw:~$ sysctl -a | grep allow_wx
kern.elf32.allow_wx: 1
kern.elf64.allow_wx: 1
```
But I did not configure these.
--=20
Best regards,
Odhiambo WASHINGTON,
Nairobi,KE
+254 7 3200 0004/+254 7 2274 3223
In an Internet failure case, the #1 suspect is a constant: DNS.
"Oh, the cruft.", egrep -v '^$|^.*#' =C2=AF\_(=E3=83=84)_/=C2=AF :-)
[How to ask smart questions:
http://www.catb.org/~esr/faqs/smart-questions.html]
--0000000000009906c20618f3f671
Content-Type: text/html; charset="UTF-8"
Content-Transfer-Encoding: quoted-printable
<div dir=3D"ltr"><div dir=3D"ltr"><br></div><br><div class=3D"gmail_quote">=
<div dir=3D"ltr" class=3D"gmail_attr">On Sun, May 19, 2024 at 7:24=E2=80=AF=
PM tetrosalame <<a href=3D"mailto:tml@seiruote.it" target=3D"_blank">tml=
@seiruote.it</a>> wrote:<br></div><blockquote class=3D"gmail_quote" styl=
e=3D"margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);paddin=
g-left:1ex">Il 19/05/2024 16:46, Jim Pazarena ha scritto:<br>
> I upgraded both of the captioned versions at the same time, so it is n=
ot <br>
> clear to me which is causing this issue.. however, since upgrading, <b=
r>
> often but without any discernible cycle or frequency, exim refuses <br=
>
> incoming connections, and logs the following:<br>
> <br>
> 2024-05-19 07:21:00 SIGSEGV (fault address: 0xffffffffffffff70)<br>
> 2024-05-19 07:21:00 SIGSEGV (maybe attempt to write to immutable memor=
y)<br>
<br>
Maybe exim is violating some policy?<br>
What does sysctl kern.elf${your_arch}.allow_wx say?<br>
<br>
FreeBSD14 features some pretty memory protections: see mitigations(7).<br>
Bye,<br>
f<br></blockquote><div></div></div><span class=3D"gmail_signature_prefix"><=
div><span class=3D"gmail_signature_prefix"><br></span></div><div><span clas=
s=3D"gmail_signature_prefix">I am running the same version of Exim on the s=
ame version of FreeBSD (on two different servers, no custom kernel) and I h=
aven't seen these symptoms.</span></div><div><span class=3D"gmail_signa=
ture_prefix">If anything, here is the output of what you asked:</span></div=
><div><span class=3D"gmail_signature_prefix"><br></span></div><div><span cl=
ass=3D"gmail_signature_prefix">``</span></div><div><span class=3D"gmail_sig=
nature_prefix">wash@gw:~$ sysctl -a | grep allow_wx<br>kern.elf32.allow_wx:=
1<br>kern.elf64.allow_wx: 1<br></span></div><div><span class=3D"gmail_sign=
ature_prefix">```</span></div><div><span class=3D"gmail_signature_prefix"><=
br></span></div><div><span class=3D"gmail_signature_prefix">But I did not c=
onfigure these.</span></div><div><span class=3D"gmail_signature_prefix"><br=
></span></div><div><span class=3D"gmail_signature_prefix"><br></span></div>=
-- </span><br><div dir=3D"ltr" class=3D"gmail_signature"><div dir=3D"ltr"><=
div dir=3D"ltr"><div>Best regards,<br>Odhiambo WASHINGTON,<br>Nairobi,KE<br=
>+254 7 3200 0004/+254 7 2274 3223</div><div><span style=3D"color:rgb(34,34=
,34)">=C2=A0In=C2=A0</span><span style=3D"color:rgb(34,34,34)">an Internet =
failure case, the #1 suspect is a constant: DNS.</span><br>"<span styl=
e=3D"font-size:12.8px">Oh, the cruft.</span><span style=3D"font-size:12.8px=
">",=C2=A0</span><span style=3D"font-size:12.8px">egrep -v '^$|^.*=
#'=C2=A0</span><span style=3D"background-color:rgb(34,34,34);color:rgb(=
238,238,238);font-family:"Lucida Console",Consolas,"Courier =
New",monospace;font-size:13.6px">=C2=AF\_(=E3=83=84)_/=C2=AF</span><sp=
an style=3D"font-size:12.8px">=C2=A0:-)</span></div><div><span style=3D"fon=
t-size:12.8px">[How to ask smart questions:=C2=A0</span><span style=3D"font=
-size:12.8px"><a href=3D"http://www.catb.org/~esr/faqs/smart-questions.html=
" target=3D"_blank">http://www.catb.org/~esr/faqs/smart-questions.html</a>]=
</span></div></div></div></div></div>
--0000000000009906c20618f3f671--
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?CAAdA2WPBrt0NR5rcDOM=Qd74Y1BEs4KniaJSMzA_epthHU5YYQ>