git bisect start
# good: [a351e9b9fc24e982ec2f0e76379a49826036da12] Linux 4.11
git bisect good a351e9b9fc24e982ec2f0e76379a49826036da12
# bad: [2ea659a9ef488125eb46da6eb571de5eae5c43f6] Linux 4.12-rc1
git bisect bad 2ea659a9ef488125eb46da6eb571de5eae5c43f6
# good: [221656e7c4ce342b99c31eca96c1cbb6d1dce45f] Merge tag 'sound-4.12-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound
git bisect good 221656e7c4ce342b99c31eca96c1cbb6d1dce45f
# bad: [c6a677c6f37bb7abc85ba7e3465e82b9f7eb1d91] Merge tag 'staging-4.12-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/staging
git bisect bad c6a677c6f37bb7abc85ba7e3465e82b9f7eb1d91
# bad: [e579dde654fc2c6b0d3e4b77a9a4b2d2405c510e] Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/ebiederm/user-namespace
git bisect bad e579dde654fc2c6b0d3e4b77a9a4b2d2405c510e
# bad: [a96480723c287c502b02659f4b347aecaa651ea1] Merge tag 'for-linus-4.12b-rc0b-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/xen/tip
git bisect bad a96480723c287c502b02659f4b347aecaa651ea1
# good: [16a12fa9aed176444fc795b09e796be41902bb08] Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input
git bisect good 16a12fa9aed176444fc795b09e796be41902bb08
# bad: [1684096b1ed813f621fb6cbd06e72235c1c2a0ca] Merge tag 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dledford/rdma
git bisect bad 1684096b1ed813f621fb6cbd06e72235c1c2a0ca
# bad: [e821303c428eedcc20746224d590b11c7000a7e5] iw_cxgb4: Use dsgl by default
git bisect bad e821303c428eedcc20746224d590b11c7000a7e5
# bad: [515ed4f3aab4e8a0855d0cdfd9753a419ccfb297] IB/IPoIB: Separate control and data related initializations
git bisect bad 515ed4f3aab4e8a0855d0cdfd9753a419ccfb297
# bad: [f7b42633720deb5ca8f4bcb175c7dc2933057e7f] IB/hfi1: Ensure VL index is within bounds
git bisect bad f7b42633720deb5ca8f4bcb175c7dc2933057e7f
# bad: [8688426ba6464f7079649f52cf9108856c419415] IB/hfi1: Cache registers during state change
git bisect bad 8688426ba6464f7079649f52cf9108856c419415
# good: [cf8966b3477d5e6545393bb4499f2051ea554c62] IB/core: Add support for fd objects
git bisect good cf8966b3477d5e6545393bb4499f2051ea554c62
# bad: [771a52584096c45e4565e8aabb596eece9d73d61] IB/IPoIB: ibX: failed to create mcg debug file
git bisect bad 771a52584096c45e4565e8aabb596eece9d73d61
# bad: [cd6ce4a5737829052abc4ffc8befd0adfff8998d] IB/hns: Explicitly include linux/of.h
git bisect bad cd6ce4a5737829052abc4ffc8befd0adfff8998d
# bad: [1e7710f3f6563940bb6bbc94aa8eadfd344a86af] IB/core: Change completion channel to use the reworked objects schema
git bisect bad 1e7710f3f6563940bb6bbc94aa8eadfd344a86af
# first bad commit: [1e7710f3f6563940bb6bbc94aa8eadfd344a86af] IB/core: Change completion channel to use the reworked objects schema