On 16/11/17 22:21, kernelci.org bot wrote:
mainline/master boot: 559 boots: 63 failed, 477 passed with 12 offline, 7 conflicts (v4.14-9357-g2bf16b7a73ca)
Full Boot Summary: https://kernelci.org/boot/all/job/mainline/branch/master/kernel/v4.14-9357-g... Full Build Summary: https://kernelci.org/build/mainline/branch/master/kernel/v4.14-9357-g2bf16b7...
Tree: mainline Branch: master Git Describe: v4.14-9357-g2bf16b7a73ca Git Commit: 2bf16b7a73caf3435f782e4170cfe563675e10f9 Git URL: http://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git Tested: 102 unique boards, 24 SoC families, 36 builds out of 211
Boot Regressions Detected:
arm:
[...]
multi_v7_defconfig:
[...]
tegra124-nyan-big: lab-collabora: failing since 1 day (last pass: v4.14-3308-g670ffccb2f91 - first fail: v4.14-3453-ge37e0ee01900)
It seems like the automatic bisection job on staging.kernelci.org found what might have caused this failure. It's still an experimental tool but hopefully it will eventually be useful and save time when looking for the root cause of boot failures...
Here's what it found:
commit 7313cfa4f6e30384fa04083698d1e865cf812a6a Author: Ben Skeggs bskeggs@redhat.com Date: Wed Nov 1 03:56:19 2017 +1000
drm/nouveau/bar: move bar1 initialisation into its own function
BAR2 being done for practical reasons, this is just for consistency.
Flushes have been added after the write to bind the instance block, as later commits will reveal the need for them.
Signed-off-by: Ben Skeggs bskeggs@redhat.com
Kernel error:
[ 2.402977] nouveau 57000000.gpu: gr: failed to load fuc409c [ 2.456166] Unable to handle kernel NULL pointer dereference at virtual address 00000000
It looks like the same DRM driver issue that was found previously on linux-next (CC Jon Hunter). I would be interested to know if this is actually the commit that introduced the problem, hoping it can help getting it fixed but also to collect results from the new bisection tool. It would be great if you could please let me know if you find out, and apologies if it isn't.
The full bisection job log:
https://people.collabora.com/~gtucker/kernelci/bisections/20171117-tegra124-...
All the LAVA jobs for this bisection, for the full kernel logs:
https://lava.collabora.co.uk/scheduler/alljobs?length=25&search=lava-bis...
The boot results can also be found here by searching for "lava-bisect-v2-b-1513":
https://staging.kernelci.org/boot/
Hope this helps!
Guillaume
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