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</header>
<p>This document describes the changes made to the ERTS application.</p>
+<section><title>Erts 12.1.1</title>
+
+ <section><title>Fixed Bugs and Malfunctions</title>
+ <list>
+ <item>
+ <p>
+ A race between an exiting port and handling of
+ simultaneously received signals to that port could cause
+ a runtime system crash. The effected signals are
+ <c>link</c>, <c>monitor</c> and <c>demonitor</c>. On OTP
+ 22 a similiar race could also cause a memory leak when
+ receiving an <c>unlink</c> signal.</p>
+ <p>
+ Own Id: OTP-17642 Aux Id: PR-5248 </p>
+ </item>
+ <item>
+ <p>
+ <seemfa marker="erts:erlang#monitor/3">A user defined tag
+ on a monitor message</seemfa> could cause the runtime
+ system to crash when the monitor message had been
+ received.</p>
+ <p>
+ Own Id: OTP-17646 Aux Id: GH-5221, PR-5232 </p>
+ </item>
+ <item>
+ <p>
+ A call to <seemfa
+ marker="erts:erlang#demonitor/1"><c>erlang:demonitor(Ref)</c></seemfa>
+ where the reference <c>Ref</c> referred to an active
+ alias, but not an active monitor, caused the runtime
+ system to crash.</p>
+ <p>
+ Own Id: OTP-17647 Aux Id: GH-5225, PR-5230 </p>
+ </item>
+ <item>
+ <p>
+ The message queue of a process entered an inconsistent
+ state after a <c>receive</c> expression with an invalid
+ timeout value was executed. If the exception raised due
+ to the invalid timeout value was caught, the following
+ <c>receive</c> expression executed by the process could
+ fail to match messages already present in the message
+ queue.</p>
+ <p>
+ On OTP 24 this could also cause the whole runtime system
+ to crash.</p>
+ <p>
+ Own Id: OTP-17651 Aux Id: GH-5235, PR-5244 </p>
+ </item>
+ <item>
+ <p>
+ Sending a <c>Port ! {PortOwner, close}</c> signal from a
+ process other than the port owner could erroneously
+ trigger a <c>badsig</c> exit signal being sent to the
+ port owner process even though the correct
+ <c>PortOwner</c> had been passed in the signal.</p>
+ <p>
+ Own Id: OTP-17665 Aux Id: PR-5248 </p>
+ </item>
+ </list>
+ </section>
+
+</section>
+
<section><title>Erts 12.1</title>
<section><title>Fixed Bugs and Malfunctions</title>