cvs commit: src/lib/libkvm kvm.c
Matthew Dillon
dillon at crater.dragonflybsd.org
Mon Oct 24 13:04:14 PDT 2005
dillon 2005/10/24 12:59:51 PDT
DragonFly src repository
Modified files:
lib/libkvm kvm.c
Log:
Temporarily work around a race in the kernel. The kernel does a sanity check
on the KVM memory range read via /dev/[k]mem. However, if the user buffer
takes a VM fault and blocks the process, the related kernel memory could
become invalid while the process was blocked. Try to avoid taking faults on
the user buffer by touching it first.
Reported-by: =?ISO-8859-1?Q?Stefan_Kr=FCger?= <skrueger at xxxxxxxxxxxxxxxx>
Revision Changes Path
1.7 +10 -0 src/lib/libkvm/kvm.c
http://www.dragonflybsd.org/cvsweb/src/lib/libkvm/kvm.c.diff?r1=1.6&r2=1.7&f=u
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