7161af9612
For some reason root in GH actions is able to _decrease_ its oom score even after dropping all capabilities (including CAP_SYS_RESOURCE), until the oom score is changed explicitly after sudo: $ systemd-detect-virt microsoft $ sudo su - ~# capsh --drop=all -- -c 'capsh --print; grep -H . /proc/self/oom*; choom -p $$ -n -101' Current: = Bounding set = Ambient set = Current IAB: !cap_chown,!cap_dac_override,!cap_dac_read_search,...,!cap_sys_resource,...,!cap_checkpoint_restore Securebits: 00/0x0/1'b0 secure-noroot: no (unlocked) secure-no-suid-fixup: no (unlocked) secure-keep-caps: no (unlocked) secure-no-ambient-raise: no (unlocked) uid=0(root) euid=0(root) gid=0(root) groups=0(root) Guessed mode: UNCERTAIN (0) /proc/self/oom_adj:8 /proc/self/oom_score:1000 /proc/self/oom_score_adj:500 pid 22180's OOM score adjust value changed from 500 to -101 ~# choom -p $$ -n 500 pid 22027's OOM score adjust value changed from 500 to 500 ~# capsh --drop=all -- -c 'capsh --print; grep -H . /proc/self/oom*; choom -p $$ -n -101' Current: = Bounding set = Ambient set = ... uid=0(root) euid=0(root) gid=0(root) groups=0(root) Guessed mode: UNCERTAIN (0) /proc/self/oom_adj:8 /proc/self/oom_score:1000 /proc/self/oom_score_adj:500 choom: failed to set score adjust value: Permission denied I have no idea what's going on, but it breaks exec-oomscoreadjust-negative.service from test-execute when running unprivileged. |
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.clusterfuzzlite | ||
.github | ||
.semaphore | ||
catalog | ||
coccinelle | ||
docs | ||
factory | ||
hwdb.d | ||
LICENSES | ||
man | ||
mime | ||
mkosi.conf.d | ||
mkosi.images | ||
modprobe.d | ||
network | ||
po | ||
presets | ||
rules.d | ||
shell-completion | ||
src | ||
sysctl.d | ||
sysusers.d | ||
test | ||
tmpfiles.d | ||
tools | ||
units | ||
xorg | ||
.clang-format | ||
.ctags | ||
.dir-locals.el | ||
.editorconfig | ||
.gitattributes | ||
.gitignore | ||
.mailmap | ||
.packit.yml | ||
.pylintrc | ||
.vimrc | ||
.ycm_extra_conf.py | ||
LICENSE.GPL2 | ||
LICENSE.LGPL2.1 | ||
meson.build | ||
meson.version | ||
meson_options.txt | ||
mkosi.conf | ||
mkosi.kernel.config | ||
NEWS | ||
README | ||
README.md | ||
TODO |
System and Service Manager
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