From: Ondřej Surý <ondrej@isc.org>
Date: Thu, 30 Apr 2026 10:04:06 +0000 (+0200)
Subject: [9.20] fix: usr: prevent rare named crash when notifies are cancelled
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=49509dcbaebf29580460f13dba7fba0ccc3ef0c4;p=thirdparty%2Fbind9.git

[9.20] fix: usr: prevent rare named crash when notifies are cancelled

Under heavy load, named could occasionally crash when a queued
outbound notify or zone refresh was cancelled at the moment it
was being sent — for example, while a zone was being reloaded or
removed.  The race that caused the crash is now prevented.

Closes #5915

Backport of MR !11918

Merge branch 'backport-5915-ratelimiter-dequeue-tick-uaf-9.20' into 'bind-9.20'

See merge request isc-projects/bind9!11922
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