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Diffstat (limited to 'results/scraper/launchpad/1878413')
| -rw-r--r-- | results/scraper/launchpad/1878413 | 43 |
1 files changed, 43 insertions, 0 deletions
diff --git a/results/scraper/launchpad/1878413 b/results/scraper/launchpad/1878413 new file mode 100644 index 00000000..603fa708 --- /dev/null +++ b/results/scraper/launchpad/1878413 @@ -0,0 +1,43 @@ +/proc/sys/fs/binfmt_misc/ empty even though binfmt_misc is loaded + +_apksigner_ uses binfmt to execute via _jarwrapper_, since it is a JAR. We have a test suite that relies on _apksigner_ working. It was running fine in Ubuntu/bionic. Since it was pegged to LTS, it got upgraded to Ubuntu/focal and it stopped working. This is likely because /proc/sys/fs/binfmt_misc/ is totally empty. The "binfmt_misc" kernel module shows as loaded: + +$ grep binfmt /proc/modules +binfmt_misc 20480 1 - Live 0xffffffffc0452000 + +This relies on binfmt support in gitlab.com's CI runner setup, based on Docker. binfmt works in containers there, for example on Ubuntu/bionic: +https://gitlab.com/fdroid/fdroidserver/-/jobs/516857857 + +Something in Ubuntu/focal broke this when running focal in the container on the same Docker host runners: +https://gitlab.com/fdroid/fdroidserver/-/jobs/547148092 + +Debian's ci.debian.net lxc runners also have a similar problem, it might be related: +https://salsa.debian.org/ci-team/debian-ci-config/-/issues/1 + +The binfmt_misc filesystem must be mounted on /proc/sys/fs/binfmt_misc to work. + +$ mount|grep ^binfmt_misc +binfmt_misc on /proc/sys/fs/binfmt_misc type binfmt_misc (rw,nosuid,nodev,noexec,relatime) + + +From my experience, that mounting happens automatically once +binfmt-support is installed. At least that is the case on the +Ubuntu/bionic jobs and on my own Debian machines. Did something change +so that now it must be manually mounted? + + +It seems in the focal container, binfmt_misc doesn't get setup properly: +https://gitlab.com/eighthave/fdroidserver/-/jobs/550962360 + +$ grep binfmt /proc/modules +binfmt_misc 20480 1 - Live 0xffffffffc0461000 +$ mount | grep binfmt_misc || mount binfmt_misc /proc/sys/fs/binfmt_misc +mount: /proc/sys/fs/binfmt_misc: special device binfmt_misc does not exist. +$ + +Ok, your hint lead me to the fix: + +$ mount | grep binfmt_misc || mount -t binfmt_misc binfmt_misc /proc/sys/fs/binfmt_misc + +I guess this mounting was somehow happening automatically before, but now it seems that it is handled by systemd in a user system. But a container usually doesn't run systemd. + |