Bug #2367

reproducible panic when sbcl drops into debugger

Added by profmakx over 4 years ago. Updated about 4 years ago.

Status:ClosedStart date:05/15/2012
Priority:NormalDue date:
Assignee:-% Done:


Target version:-


The kernel panics with

panic: kqueue: checkloop failed i=0

on master when running sbcl and dropping into the debugger. Will upload SBCL package + core if necessary.


#2 Updated by profmakx over 4 years ago

How to reproduce: start sbcl and try executing an invalid command like


then when sbcl dropped into debugger, press enter.

#3 Updated by profmakx about 4 years ago

  • Status changed from New to Feedback

This should be fixed with commit 088621c17af05faef491565f0d1b276d7b2077d0. The panic was actually rooted in the polling framework not playing nicely with kqfilters on ttys. SBCL opens /dev/tty and uses it only in it's debugger which is why the problem only occurred after sbcl had dropped into the debugger.

#4 Updated by marino about 4 years ago

You're asking yourself for feedback? What will you reply? Is this fixed?

#5 Updated by marino about 4 years ago

  • Status changed from Feedback to Closed

Markus confirmed it's fixed on IRC.

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