$ git bisect log
git bisect start
# bad: [370ce45b5986118fa496dddbcd7039e1aa1a418f] drm/radeon/cik: use a separate counter for CP init timeout
git bisect bad 370ce45b5986118fa496dddbcd7039e1aa1a418f
# good: [e8c214d22e76dd0ead38f97f8d2dc09aac70d651] drm/radeon: fix irq ring buffer overflow handling
git bisect good e8c214d22e76dd0ead38f97f8d2dc09aac70d651
# good: [ae045e2455429c418a418a3376301a9e5753a0a8] Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next
git bisect good ae045e2455429c418a418a3376301a9e5753a0a8
# bad: [0a44e68ca0a8456ed33c62c99b8c42bebdcbbc8c] Merge tag 'defconfig-for-3.17' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc
git bisect bad 0a44e68ca0a8456ed33c62c99b8c42bebdcbbc8c