Date: Fri, 9 Nov 2001 15:58:07 -0800 (PST) From: Ian Dowse <iedowse@FreeBSD.org> To: cvs-committers@FreeBSD.org, cvs-all@FreeBSD.org Subject: cvs commit: src/sys/kern subr_prf.c Message-ID: <200111092358.fA9Nw7R75106@freefall.freebsd.org>
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iedowse 2001/11/09 15:58:07 PST
Modified files:
sys/kern subr_prf.c
Log:
Properly sanity-check the old msgbuf structure before we accept it
as being valid. Previously only the magic number and the virtual
address were checked, but it makes little sense to require that
the virtual address is the same (the message buffer is located at
the end of physical memory), and checks on the msg_bufx and msg_bufr
indices were missing.
Submitted by: Bodo Rueskamp <br@clabsms.de>
Tripped over during a kernel debugging tutorial given by: grog
Reviewed by: grog, dwmalone
MFC after: 1 week
Revision Changes Path
1.73 +7 -4 src/sys/kern/subr_prf.c
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