Date: Fri, 1 May 1998 20:02:14 -0700 (PDT) From: Peter Wemm <peter@FreeBSD.ORG> To: cvs-committers@FreeBSD.ORG, cvs-all@FreeBSD.ORG, cvs-sys@FreeBSD.ORG Subject: cvs commit: src/sys/vm vm_page.c Message-ID: <199805020302.UAA18621@freefall.freebsd.org>
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peter 1998/05/01 20:02:14 PDT
Modified files:
sys/vm vm_page.c
Log:
Seatbelts for vm_page_bits() in case a file offset is passed in rather than
the page offset. If a large file offset was passed in, a large negative
array index could be generated which could cause page faults etc at worst
and file corruption at the least. (Pages are allocated within file
space on page alignment boundaries, so a file offset being passed in here
is harmless to DTRT. The case where this was happening has already been
fixed though, this is in case it happens again).
Reviewed by: dyson
Revision Changes Path
1.99 +3 -2 src/sys/vm/vm_page.c
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