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>
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[-- Attachment #1 --]
On Sun, May 19, 2024 at 7:24 PM 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 not
> > 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.
--
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 '^$|^.*#' ¯\_(ツ)_/¯ :-)
[How to ask smart questions:
http://www.catb.org/~esr/faqs/smart-questions.html]
[-- Attachment #2 --]
<div dir="ltr"><div dir="ltr"><br></div><br><div class="gmail_quote"><div dir="ltr" class="gmail_attr">On Sun, May 19, 2024 at 7:24 PM tetrosalame <<a href="mailto:tml@seiruote.it" target="_blank">tml@seiruote.it</a>> wrote:<br></div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex">Il 19/05/2024 16:46, Jim Pazarena ha scritto:<br>
> I upgraded both of the captioned versions at the same time, so it is not <br>
> clear to me which is causing this issue.. however, since upgrading, <br>
> often but without any discernible cycle or frequency, exim refuses <br>
> incoming connections, and logs the following:<br>
> <br>
> 2024-05-19 07:21:00 SIGSEGV (fault address: 0xffffffffffffff70)<br>
> 2024-05-19 07:21:00 SIGSEGV (maybe attempt to write to immutable memory)<br>
<br>
Maybe exim is violating some policy?<br>
What does sysctl kern.elf${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="gmail_signature_prefix"><div><span class="gmail_signature_prefix"><br></span></div><div><span class="gmail_signature_prefix">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.</span></div><div><span class="gmail_signature_prefix">If anything, here is the output of what you asked:</span></div><div><span class="gmail_signature_prefix"><br></span></div><div><span class="gmail_signature_prefix">``</span></div><div><span class="gmail_signature_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="gmail_signature_prefix">```</span></div><div><span class="gmail_signature_prefix"><br></span></div><div><span class="gmail_signature_prefix">But I did not configure these.</span></div><div><span class="gmail_signature_prefix"><br></span></div><div><span class="gmail_signature_prefix"><br></span></div>-- </span><br><div dir="ltr" class="gmail_signature"><div dir="ltr"><div dir="ltr"><div>Best regards,<br>Odhiambo WASHINGTON,<br>Nairobi,KE<br>+254 7 3200 0004/+254 7 2274 3223</div><div><span style="color:rgb(34,34,34)"> In </span><span style="color:rgb(34,34,34)">an Internet failure case, the #1 suspect is a constant: DNS.</span><br>"<span style="font-size:12.8px">Oh, the cruft.</span><span style="font-size:12.8px">", </span><span style="font-size:12.8px">egrep -v '^$|^.*#' </span><span style="background-color:rgb(34,34,34);color:rgb(238,238,238);font-family:"Lucida Console",Consolas,"Courier New",monospace;font-size:13.6px">¯\_(ツ)_/¯</span><span style="font-size:12.8px"> :-)</span></div><div><span style="font-size:12.8px">[How to ask smart questions: </span><span style="font-size:12.8px"><a href="http://www.catb.org/~esr/faqs/smart-questions.html" target="_blank">http://www.catb.org/~esr/faqs/smart-questions.html</a>]</span></div></div></div></div></div>;
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