This issue seems to be caused by App Armor's profile "unprivileged_userns".
dmesg has the following report. ----- [ 2229.188009] audit: type=1400 audit(1714466038.573:555): apparmor="DENIED" operation="capable" class="cap" profile="unprivileged_userns" pid=20223 comm="texinfo-dummy-n" capability=21 capname="sys_admin" ----- And can be temporally resolved by unloading the profile. ----- $ sudo apparmor_parser -R /etc/apparmor.d/unprivileged_userns ----- -- You received this bug notification because you are a member of Ubuntu Touch seeded packages, which is subscribed to dash in Ubuntu. https://bugs.launchpad.net/bugs/2056555 Title: Python can't write to /proc files Status in dash package in Ubuntu: Confirmed Bug description: Occurs since an update around March 2 Ubuntu 24.04. Bitbake is broken due to file permission problem. Traceback (most recent call last): File "/home/hains/openpli-oe-core/bitbake/bin/bitbake-worker", line 268, in child bb.utils.disable_network(uid, gid) File "/home/hains/openpli-oe-core/bitbake/lib/bb/utils.py", line 1653, in disable_network with open("/proc/self/uid_map", "w") as f: PermissionError: [Errno 1] Operation not permitted Test code with open("/proc/self/uid_map", "w") as f: f.write("%s %s 1" % (1000, 1000)) ProblemType: Bug DistroRelease: Ubuntu 24.04 Package: dash 0.5.12-6ubuntu4 ProcVersionSignature: Ubuntu 6.8.0-11.11-generic 6.8.0-rc4 Uname: Linux 6.8.0-11-generic x86_64 NonfreeKernelModules: nvidia_modeset nvidia ApportVersion: 2.28.0-0ubuntu1 Architecture: amd64 CasperMD5CheckResult: unknown CurrentDesktop: ubuntu:GNOME Date: Fri Mar 8 14:34:08 2024 InstallationDate: Installed on 2023-03-24 (350 days ago) InstallationMedia: Ubuntu 22.10 "Kinetic Kudu" - Release amd64 (20221020) SourcePackage: dash UpgradeStatus: Upgraded to noble on 2024-01-10 (58 days ago) To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/dash/+bug/2056555/+subscriptions -- Mailing list: https://launchpad.net/~touch-packages Post to : [email protected] Unsubscribe : https://launchpad.net/~touch-packages More help : https://help.launchpad.net/ListHelp
