Package: linux-2.6 Version: 2.6.26-15 Severity: important Tags: patch
commit 7e0f90d2f2d221e66d64e61ee3c4b3b83c2545de Author: Konstantin Khlebnikov <khlebni...@openvz.org> Date: Fri Mar 27 15:01:41 2009 +0300 cfq: revalidate cached async queue Async queues are stored on struct cfq_bc_data and are cached on per-process struct cfq_io_context. The cached queue may be invalid due to io_page beancounter driven io-context switch. So, cfq_io_context gets cached queue, but corresponding cfq_bc and user_beancounter may be already destroyed -- all this leads to oops at get_beancounter in cfq_set_request. Add check for async queue owner and refill cache if it invalid. The oops itself is like this: -- System Information: Debian Release: squeeze/sid APT prefers testing APT policy: (900, 'testing'), (500, 'unstable'), (1, 'experimental') Architecture: amd64 (x86_64) Kernel: Linux 2.6.29-1-amd64 (SMP w/2 CPU cores) Locale: LANG=en_GB.UTF-8, LC_CTYPE=en_GB.UTF-8 (charmap=UTF-8) Shell: /bin/sh linked to /bin/bash -- To UNSUBSCRIBE, email to debian-bugs-dist-requ...@lists.debian.org with a subject of "unsubscribe". Trouble? Contact listmas...@lists.debian.org