# < 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 2d53056973079e6c2ffc0d7ae3afbdd3d4f18ae3
Head not built, building
# < git reset --mixed
# git branch -D linus
Deleted branch linus (was 2d53056).
# 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_sh7785lcr_defconfig_sh4 CROSS_COMPILE=/opt/crosstool/gcc-4.3.2-nolibc/bin/sh4-linux-  -f kisskb-version.mk
makewrap: Added distcc to CROSS_COMPILE
makewrap: Distcc hosts = sprygo/32 localhost/16
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_sh7785lcr_defconfig_sh4 CROSS_COMPILE=/opt/crosstool/gcc-4.3.2-nolibc/bin/sh4-linux-  sh7785lcr_defconfig
makewrap: Added distcc to CROSS_COMPILE
makewrap: Distcc hosts = sprygo/32 localhost/16
makewrap: Added ccache to CROSS_COMPILE
makewrap: Using -j factor 128
make[2]: *** [sh7785lcr_defconfig] Segmentation fault
make[1]: *** [sh7785lcr_defconfig] Error 2
make: *** [sub-make] Error 2
make failed, trying to bisect ..
## bisect start
Last known good revision 3cfc2c42c1cbc8e238bb9c0612c0df4565e3a8b4
# < git symbolic-ref HEAD
# < git merge-base 3cfc2c42c1cbc8e238bb9c0612c0df4565e3a8b4 2d53056973079e6c2ffc0d7ae3afbdd3d4f18ae3

# < 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 3cfc2c42c1cbc8e238bb9c0612c0df4565e3a8b4
Bisecting: 1316 revisions left to test after this (roughly 10 steps)
[ab69bcd66fb4be64edfc767365cb9eb084961246] Merge git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core-2.6
Trying 2d53056973079e6c2ffc0d7ae3afbdd3d4f18ae3

# < /scratch/kisskb/prod/kisskb/kisskb3/backend/makewrap.py ARCH=sh O=/scratch/kisskb/prod/kisskb/kisskb3/backend/build/linus_sh7785lcr_defconfig_sh4 CROSS_COMPILE=/opt/crosstool/gcc-4.3.2-nolibc/bin/sh4-linux-  sh7785lcr_defconfig
makewrap: Added distcc to CROSS_COMPILE
makewrap: Distcc hosts = sprygo/32 localhost/16
makewrap: Added ccache to CROSS_COMPILE
makewrap: Using -j factor 128
make[2]: *** [sh7785lcr_defconfig] Segmentation fault
make[1]: *** [sh7785lcr_defconfig] Error 2
make: *** [sub-make] Error 2
bisect failed 2d53056973079e6c2ffc0d7ae3afbdd3d4f18ae3

# git bisect bad
Bisecting: 565 revisions left to test after this (roughly 9 steps)
[9779714c8af09d57527f18d9aa2207dcc27a8687] Merge branch 'kms-merge' of git://git.kernel.org/pub/scm/linux/kernel/git/jwessel/linux-2.6-kgdb
# < 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)