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<p>Hello Maiyun,<br>
<br>
thanks for confirming that it is happening, we know about this
issue.<br>
<br>
It seems to be caused by some particularly nasty race condition,
which we are trying to hunt down for like a week now.<br>
<br>
We will definitely let you know if we need anything.<br>
<br>
Have a good week!<br>
David<br>
</p>
<pre class="moz-signature" cols="72">David Petera (he/him) | BIRD Tech Support | CZ.NIC, z.s.p.o.</pre>
<div class="moz-cite-prefix">On 2/25/25 06:30, Maiyun Zhang via
Bird-users wrote:<br>
</div>
<blockquote type="cite"
cite="mid:C68EE69B-DC67-48BE-BDF0-84520DC84A76@maiyun.me">
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<div
style="overflow-wrap: break-word; -webkit-nbsp-mode: space; line-break: after-white-space;">Hello
folks,
<div><br>
</div>
<div>I was checking the log today and saw a failed assertion in
bird.</div>
<div>
<div
style="margin: 0px; font-style: normal; font-variant-caps: normal; font-stretch: normal; font-size: 11px; line-height: normal; font-family: Menlo; font-size-adjust: none; font-kerning: auto; font-variant-alternates: normal; font-variant-ligatures: normal; font-variant-numeric: normal; font-variant-east-asian: normal; font-variant-position: normal; font-feature-settings: normal; font-optical-sizing: auto; font-variation-settings: normal; color: rgb(202, 51, 35);"><span
style="font-variant-ligatures: no-common-ligatures; color: #000000">bird[43579]:
</span><span
style="font-variant-ligatures: no-common-ligatures"><b>Assertion
'!bmap_test(&c->export_rejected_map, old->id)'
failed at nest/<a class="moz-txt-link-freetext" href="rt-table.c:1571">rt-table.c:1571</a></b></span></div>
</div>
<div><span style="font-variant-ligatures: no-common-ligatures"><br>
</span></div>
<div><span style="font-variant-ligatures: no-common-ligatures">After
this, the daemon dies and gets restarted by systemd. The
frequency of this fault ranges from once every few minutes
to a few hours depending on BGP traffic.</span></div>
<div><span style="font-variant-ligatures: no-common-ligatures"><br>
</span></div>
<div><span style="font-variant-ligatures: no-common-ligatures">I
am running the latest build on branch stable-v3 (d13c9d3),
built with gcc 13.</span></div>
<div><span style="font-variant-ligatures: no-common-ligatures"><br>
</span></div>
<div><span style="font-variant-ligatures: no-common-ligatures">This
error happens on all three of my routers running the same
revision. All of them are aarch64 linux machines. Two of
them have eBGP peers and one is iBGP only (and babel).</span></div>
<div><span style="font-variant-ligatures: no-common-ligatures">Judging
from the log lines, there is not a pattern before which this
happens.</span></div>
<div><span style="font-variant-ligatures: no-common-ligatures"><br>
</span></div>
<div><span style="font-variant-ligatures: no-common-ligatures">The
set up is a little complex for me, so I’m sorry for not
having a ready-to-go MWE. Please let me know if I can help
debugging it.</span></div>
<div style="caret-color: rgb(0, 0, 0); color: rgb(0, 0, 0);"><br>
</div>
<div style="caret-color: rgb(0, 0, 0); color: rgb(0, 0, 0);">Thank
you all for the great work in Bird!</div>
<div style="caret-color: rgb(0, 0, 0); color: rgb(0, 0, 0);"><br>
</div>
Best,<br>
<div>
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<div>Maiyun Zhang <font size="1">(he/him)</font></div>
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<br>
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