On Thu, Jan 07, 2016 at 03:59:58PM +0000, Mark Brown wrote:
On Thu, Jan 07, 2016 at 07:41:52AM -0800, kernelci.org bot wrote:
Tree: next Branch: local/master Git Describe: next-20160107 Git Commit: 0f023a298a7d2a8e99c54913f7277b3c08c1f5c9 Git URL: git://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git Tested: 95 unique boards, 25 SoC families, 28 builds out of 135
Boot Failures Detected: https://kernelci.org/boot/?next-20160107&fail
For the past couple of days -next has been failing to boot on various Tegra platforms, there are failures involving either no kernel output or (with tegra_defconfig) backtraces during CMA allocation from USB, for example:
http://storage.kernelci.org/next/next-20160107/arm-tegra_defconfig/lab-khilm...
multi_v7_defconfig+CONFIG_THUMB2_KERNEL=y: tegra124-jetson-tk1: 2 failed labs tegra30-beaver: 1 failed lab tegra_defconfig: tegra124-jetson-tk1: 2 failed labs tegra124-jetson-tk1_rootfs:nfs: 1 failed lab tegra124-nyan-big: 1 failed lab tegra30-beaver: 1 failed lab multi_v7_defconfig+CONFIG_ARM_LPAE=y: tegra124-jetson-tk1: 1 failed lab tegra124-nyan-big: 1 failed lab multi_v7_defconfig: tegra124-jetson-tk1: 2 failed labs tegra30-beaver: 1 failed lab multi_v7_defconfig+CONFIG_LKDTM=y: tegra124-jetson-tk1: 2 failed labs tegra30-beaver: 1 failed lab multi_v7_defconfig+CONFIG_PROVE_LOCKING=y: tegra124-jetson-tk1: 2 failed labs tegra30-beaver: 1 failed labI did bisects yesterday but they were a bit inconclusive, showing a series of skipped commits in the TTY tree as being the culprits:
afd7f88f157796e586fc99d62da13a54024e0731 serial: 8250: move of_serial code to 8250 directory 4e33870b3bb691996354a8f9e8f69458b4fc34d9 serial: of: CONFIG_SERIAL_8250 is always set d1b5c87fa8058a3f477ae05555916dd1cea934ad serial: remove NWP serial support
which seems more than a little surprising and like they might be false positives, especially in the cases that do produce output. The errors today look the same. I've not investigated further than the bisects.
Full bisect logs:
https://ci.linaro.org/view/people/job/tbaker-boot-bisect-bot/140/console https://ci.linaro.org/view/people/job/tbaker-boot-bisect-bot/141/console
These should all be fixed by this patch:
serial: 8250: of: Fix the driver and actually compile the 8250_of
which can be found in patchwork here:
https://patchwork.kernel.org/patch/7883541/
I think this is merely waiting to be picked up into the tty tree. I suspect the reason why there's output in the first place is because of earlyprintk. I've seen recent linux-next work properly, with the serial console hanging at some point (fbcon shows login prompt). If I apply the above patch things are back to normal.
Thierry