Public bug reported:
Ubuntu xenial 16.04, bind9 1:9.10.3.dfsg.P4-8ubuntu1.14
Yesterday the named process started crashing frequently, 49 crashes so
far on 49 different servers around the world (one crash each!). We did
run OS upgrades yesterday, but bind9 packages were not updated at this
time. This particular bind9 package version was mostly deployed out last
month. Due to the sudden surge of crashes and the distribution I'm
suspecting this might be triggered remotely by an incoming packet.
Backtrace from the assert:
2019-06-18T21:42:16.801421+00:00 hostname named[888]: general: critical:
../../../lib/dns/dispatch.c:3691: REQUIRE((disp->attributes & 0x00000020U) !=
0) failed, back trace
2019-06-18T21:42:16.801890+00:00 hostname named[888]: general: critical: #0
0x555c41aeeaf0 in ??
2019-06-18T21:42:16.802118+00:00 hostname named[888]: general: critical: #1
0x7f475bd66eaa in ??
2019-06-18T21:42:16.802315+00:00 hostname named[888]: general: critical: #2
0x7f475ca9f7da in ??
2019-06-18T21:42:16.802496+00:00 hostname named[888]: general: critical: #3
0x555c41ae3195 in ??
2019-06-18T21:42:16.802684+00:00 hostname named[888]: general: critical: #4
0x7f475bd8b420 in ??
2019-06-18T21:42:16.802875+00:00 hostname named[888]: general: critical: #5
0x7f475b7346ba in ??
2019-06-18T21:42:16.803056+00:00 hostname named[888]: general: critical: #6
0x7f475ae7e41d in ??
2019-06-18T21:42:16.803245+00:00 hostname named[888]: general: critical:
exiting (due to assertion failure)
** Affects: bind9 (Ubuntu)
Importance: Undecided
Status: New
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https://bugs.launchpad.net/bugs/1833400
Title:
named crashes on REQUIRE((disp->attributes assert
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