Il giorno mer, 05/06/2019 alle 19.39 +0200, Greg KH ha scritto: > On Wed, Jun 05, 2019 at 06:23:58PM +0200, Andrea Vai wrote: > [...] > > > Anyway, I know that I can do all of this in a better way, and will > let > > you know. > > Yes, please do so, your steps above do not show much. Here I am with another question. What I have done so far: - booted with the last kernel I know to be working (4.20.13- 200.fc29.x86_64, installed from Fedora repos), checked that test runs fine (2min to copy) - marked "git bisect good v4.20.13" - built the latest stable version: - git clone https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux-stable.git - cp -v /boot/config-$(uname -r) .config - make -j4 && make modules_install && make install && grub2-mkconfig -o /boot/grub2/grub.cfg - grubby --set-default /boot/vmlinuz-5.2.0-rc3 (the last regular file listed in "ls -lrt /boot/v*") - rebooted with kernel 5.2.0-rc3, ran the test, took 49min to copy (!), thus marked "git bisect bad" - built again, and it turns out to be 4.20.0 (why is it earlier than 4.20.13?), rebooted with 4.20.0, ran the test and it took more than 15 minutes so I killed the cp process, and marked it BAD, and obtained: The merge base 8fe28cb58bcb235034b64cbbb7550a8a43fd88be is bad. This means the bug has been fixed between 8fe28cb58bcb235034b64cbbb7550a8a43fd88be and [0f7c162c1df596e0bba04c26fc9cc497983bf32b]. The output of "git bisect log" is: git bisect start # good: [0f7c162c1df596e0bba04c26fc9cc497983bf32b] Linux 4.20.13 git bisect good 0f7c162c1df596e0bba04c26fc9cc497983bf32b # bad: [f2c7c76c5d0a443053e94adb9f0918fa2fb85c3a] Linux 5.2-rc3 git bisect bad f2c7c76c5d0a443053e94adb9f0918fa2fb85c3a # bad: [8fe28cb58bcb235034b64cbbb7550a8a43fd88be] Linux 4.20 git bisect bad 8fe28cb58bcb235034b64cbbb7550a8a43fd88be I can understand that the bug was present before 4.20.13 (is that reasonable?), but how can I tell bisect to start at 4.20.13, which I know for sure to be working, and not from 4.20.0, which I actually don't care about? I am afraid I am missing something obvious, sorry Thank you very much, Andrea
