Comment 24 for bug 1257338

Tarpoon, as outlined in https://wiki.ubuntu.com/Kernel/KernelBisection#Reverse_commit_bisecting_upstream_kernel_versions git is not designed to do a reverse bisect where one marks a later tag good, and an earlier tag bad. Hence, you would want to do:
git bisect bad v3.13-rc5
git bisect good v3.13-rc3
Bisecting: 433 revisions left to test after this (roughly 9 steps)
[908bfda754a9e972c4728832513b11153bd3a140] Merge branch 'x86/urgent' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

If the bug is reproducible, then you mark it good. If it's not reproducible, mark it bad.