Date: Tue, 31 May 2011 22:39:32 +0000 (UTC) From: "Kenneth D. Merry" <ken@FreeBSD.org> To: cvs-src-old@freebsd.org Subject: cvs commit: src/sys/kern subr_msgbuf.c Message-ID: <201105312239.p4VMddp3076222@repoman.freebsd.org>
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ken 2011-05-31 22:39:32 UTC
FreeBSD src repository
Modified files:
sys/kern subr_msgbuf.c
Log:
SVN rev 222550 on 2011-05-31 22:39:32Z by ken
Fix a bug introduced in revision 222537.
In msgbuf_reinit() and msgbuf_init(), we weren't initializing the mutex.
Depending on the contents of memory, the LO_INITIALIZED flag might be
set on the mutex (either due to a warm reboot, and the message buffer
remaining in place, or due to garbage in memory) and in that case, with
INVARIANTS turned on, we would trigger an assertion that the mutex had
already been initialized.
Fix this by bzeroing the message buffer mutex for the _init() and _reinit()
paths.
Reported by: mdf
Revision Changes Path
1.5 +2 -0 src/sys/kern/subr_msgbuf.c
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