Date: Tue, 19 Apr 2005 08:07:28 +0000 (UTC) From: David Xu <davidxu@FreeBSD.org> To: src-committers@FreeBSD.org, cvs-src@FreeBSD.org, cvs-all@FreeBSD.org Subject: cvs commit: src/sys/sys proc.h src/sys/kern kern_exit.c Message-ID: <200504190807.j3J87T3L072058@repoman.freebsd.org>
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davidxu 2005-04-19 08:07:28 UTC
FreeBSD src repository
Modified files:
sys/sys proc.h
sys/kern kern_exit.c
Log:
Fix a race condition between kern_wait() and thread_stopped().
Problem is in kern_wait(), parent process steps through children list,
once a child process is skipped, and later even if the child is stopped,
parent process still sleeps in msleep(), the race happens if parent
masked SIGCHLD.
Submitted by : Peter Edwards peadar.edwards at gmail dot com
MFC after : 4 days
Revision Changes Path
1.259 +5 -1 src/sys/kern/kern_exit.c
1.427 +1 -0 src/sys/sys/proc.h
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