# < git ls-remote /scratch/git/linus.git refs/heads/master
# < git rev-parse tmp/linus
remote == local, skipping fetch
# < git rev-parse tmp/linus
Upstream revision is 1be6a1f89f131e9c3d22f819ec542be9cda8c9e3
Head not built, building
# < git reset --mixed
# git branch -D linus
Deleted branch linus (was 1be6a1f).
# git checkout -q -f -b linus tmp/linus
# < git ls-files --others --modified
# git ls-files --others --modified
cmd.log
# < /scratch/kisskb/prod/kisskb/kisskb3/backend/makewrap.py ARCH=sh O=/scratch/kisskb/prod/kisskb/kisskb3/backend/build/linus_systemh_defconfig_sh4 CROSS_COMPILE=/opt/crosstool/gcc-4.3.2-nolibc/bin/sh4-linux-  -f kisskb-version.mk
makewrap: Added ccache to CROSS_COMPILE
makewrap: Using -j factor 128
# < /scratch/kisskb/prod/kisskb/kisskb3/backend/makewrap.py ARCH=sh O=/scratch/kisskb/prod/kisskb/kisskb3/backend/build/linus_systemh_defconfig_sh4 CROSS_COMPILE=/opt/crosstool/gcc-4.3.2-nolibc/bin/sh4-linux-  systemh_defconfig
makewrap: Added ccache to CROSS_COMPILE
makewrap: Using -j factor 128
make[2]: *** [systemh_defconfig] Error 1
make[1]: *** [systemh_defconfig] Error 2
make: *** [sub-make] Error 2
make failed, trying to bisect ..
## bisect start
Last known good revision 151f52f09c5728ecfdd0c289da1a4b30bb416f2c
# < git symbolic-ref HEAD
# < git merge-base 151f52f09c5728ecfdd0c289da1a4b30bb416f2c 1be6a1f89f131e9c3d22f819ec542be9cda8c9e3

# < git ls-files --others --modified
# git ls-files --others --modified
cmd.log
# git bisect reset linus
Already on 'linus'
# git bisect start
# git bisect bad
# git bisect good 151f52f09c5728ecfdd0c289da1a4b30bb416f2c
Bisecting: 11499 revisions left to test after this (roughly 14 steps)
[b73d77b2b75091b09d31f5c47924c99d4f19930a] ARM: mxs/mx23evk: add framebuffer device
Trying 1be6a1f89f131e9c3d22f819ec542be9cda8c9e3

# < /scratch/kisskb/prod/kisskb/kisskb3/backend/makewrap.py ARCH=sh O=/scratch/kisskb/prod/kisskb/kisskb3/backend/build/linus_systemh_defconfig_sh4 CROSS_COMPILE=/opt/crosstool/gcc-4.3.2-nolibc/bin/sh4-linux-  systemh_defconfig
makewrap: Added ccache to CROSS_COMPILE
makewrap: Using -j factor 128
make[2]: *** [systemh_defconfig] Error 1
make[1]: *** [systemh_defconfig] Error 2
make: *** [sub-make] Error 2
bisect failed 1be6a1f89f131e9c3d22f819ec542be9cda8c9e3

# git bisect bad
Bisecting: 5743 revisions left to test after this (roughly 13 steps)
[72eb6a791459c87a0340318840bb3bd9252b627b] Merge branch 'for-2.6.38' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/percpu
# < git symbolic-ref HEAD
fatal: ref HEAD is not a symbolic ref
Traceback (most recent call last):
  File "/scratch/kisskb/prod/kisskb/kisskb3/backend/backend.py", line 151, in _do_build
    self.bisect()
  File "/scratch/kisskb/prod/kisskb/kisskb3/backend/backend.py", line 228, in bisect
    current = self.current_head_revid()
  File "/scratch/kisskb/prod/kisskb/kisskb3/backend/backend.py", line 253, in current_head_revid
    ref = call_pipe('git symbolic-ref HEAD', self.log).strip()
  File "/scratch/kisskb/prod/kisskb/kisskb3/backend/utils.py", line 32, in call_pipe
    raise CommandFailedException(cmd, p.returncode)
CommandFailedException: Failed running "git symbolic-ref HEAD" (128)