https://bugs.freedesktop.org/show_bug.cgi?id=75102
--- Comment #9 from Peter Asplund peterasplund@gentoo.se --- I've done the bisect! And maaaan was it tiring. I think I've built the kernel 60-70 times, since the crash seems to be more reproducible when the system is under stress. Then I had to keep it under stress to see if it finally crashed and repeated the behaviour, which could take all from 2 minutes to 30 minutes!
I also managed to not wait long enough for a crash, which lead to an incorrect "git bisect good" at the third step, and I had to do it all over again when I reached an incorrect result after 7 steps!
Buuuut, now I think I've nailed it down! Here's the bisect log, and the result:
git bisect start # bad: [d8ec26d7f8287f5788a494f56e8814210f0e64be] Linux 3.13 git bisect bad d8ec26d7f8287f5788a494f56e8814210f0e64be # good: [5e01dc7b26d9f24f39abace5da98ccbd6a5ceb52] Linux 3.12 git bisect good 5e01dc7b26d9f24f39abace5da98ccbd6a5ceb52 # good: [2f466d33f5f60542d3d82c0477de5863b22c94b9] Merge tag 'pci-v3.13-changes' of git://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci git bisect good 2f466d33f5f60542d3d82c0477de5863b22c94b9 # bad: [760c960bd6880cf22a57c0af9ff60c96250aad39] drm/sysfs: fix hotplug regression since lifetime changes git bisect bad 760c960bd6880cf22a57c0af9ff60c96250aad39 # bad: [16cd9d1c0f149ee0c8073de037e7c57886234aa0] Merge branch 'hwmon-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jdelvare/staging git bisect bad 16cd9d1c0f149ee0c8073de037e7c57886234aa0 # good: [f080480488028bcc25357f85e8ae54ccc3bb7173] Merge tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm git bisect good f080480488028bcc25357f85e8ae54ccc3bb7173 # bad: [8d0a2215931f1ffd77aef65cae2c0becc3f5d560] Merge branch 'drm-next-3.13' of git://people.freedesktop.org/~agd5f/linux into drm-next git bisect bad 8d0a2215931f1ffd77aef65cae2c0becc3f5d560 # bad: [ec61f5eb5895926a7ad8bb4472bdc95dc1e44764] drm/mgag200: drop pointless info print. git bisect bad ec61f5eb5895926a7ad8bb4472bdc95dc1e44764 # bad: [bbf1f8bfef7fbe1ea5634d7559770b805510ad8d] Merge branch 'drm-next-3.13' of git://people.freedesktop.org/~agd5f/linux into drm-next git bisect bad bbf1f8bfef7fbe1ea5634d7559770b805510ad8d # good: [be51e4a78155ff6c5d9299bf726e86b554e21117] Merge tag 'drm-intel-next-2013-10-18' of git://people.freedesktop.org/~danvet/drm-intel into drm-next git bisect good be51e4a78155ff6c5d9299bf726e86b554e21117 # good: [90c37067b70d6090a316227698a0cba40f8003bd] Merge tag 'drm/for-3.13-rc1' of git://anongit.freedesktop.org/tegra/linux into drm-next git bisect good 90c37067b70d6090a316227698a0cba40f8003bd # bad: [f9eaf9ae782d6480f179850e27e6f4911ac10227] drm/radeon: rework and fix reset detection v2 git bisect bad f9eaf9ae782d6480f179850e27e6f4911ac10227 # bad: [d5693761b2b4ff530c8af8af9ec55b6eae76e617] drm/radeon/si: fix define for MC_SEQ_TRAIN_WAKEUP_CNTL git bisect bad d5693761b2b4ff530c8af8af9ec55b6eae76e617 # bad: [6ba81e538a786281a9650efd14c6a194f35bde04] drm/radeon: fix endian handling in rlc buffer setup git bisect bad 6ba81e538a786281a9650efd14c6a194f35bde04 # bad: [14ac88af156efcefac9ba3cf249ae84f9ff71d37] drm/radeon/dpm: retain user selected performance level across state changes git bisect bad 14ac88af156efcefac9ba3cf249ae84f9ff71d37 # first bad commit: [14ac88af156efcefac9ba3cf249ae84f9ff71d37] drm/radeon/dpm: retain user selected performance level across state changes