CVS commit: src/sys/kern

["Kamil Rytarowski" <kamil%netbsd.org@localhost>]

Module Name:    src
Committed By:   kamil
Date:           Thu Jun 13 00:07:19 UTC 2019

Modified Files:
        src/sys/kern: kern_sig.c

Log Message:
Correct inversed condition for dying process in sigswitch()

If a process is exiting and it was not asked to relock proc_lock, do not
free the mutex as it causes panic. This bug is a timing bug as the faulty
condition is not deterministic and fires only somtimes, but is quickly
triggerable when executed in an infinite loop.

Detected and reported with LLDB test-suite by <mgorny>


To generate a diff of this commit:
cvs rdiff -u -r1.359 -r1.360 src/sys/kern/kern_sig.c

Please note that diffs are not public domain; they are subject to the
copyright notices on the relevant files.