Malicious guest causes dom0 hung

Solution Verified - Updated -

Issue

  • Malicious guest can cause dom0 hung.
  • For example, Windows + FJ-PV-driver causes dom0 hung. This problem was already solved by following patches.
  • changeset:   391:77f831cbb91d
user:        Keir Fraser <keir.fraser@citrix.com>
date:        Fri Jan 18 16:52:25 2008 +0000
summary:     blkback: Request-processing loop is unbounded and hence 
requires a
http://xenbits.xensource.com/linux-2.6.18-xen.hg?rev/77f831cbb91d

changeset:   392:7070d34f251c
user:        Keir Fraser <keir.fraser@citrix.com>
date:        Mon Jan 21 11:43:31 2008 +0000
summary:     blkback/blktap: Check for kthread_should_stop() in inner 
loop,
http://xenbits.xensource.com/linux-2.6.18-xen.hg?rev/7070d34f251c

Environment

  • Red Hat Enterprise Linux 5.5
  • Architecture:x86, IA64
  • Kernel Version:2.6.18-194.el5xen

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