Source: linux Version: 5.7.10-1 Severity: normal Hi,
After enabling overlayfs for userns, I find it doesn't work as expected. $ cat /sys/module/overlay/parameters/permit_mounts_in_userns Y zsj@debian:~/test$ pwd /home/zsj/test zsj@debian:~/test$ tree . ├── lower │ └── a │ └── a ├── merged ├── upper └── work zsj@debian:~/test$ unshare -m -U -r root@debian:~/test# mount -t overlay -o rw,lowerdir=/home/zsj/test/lower,upperdir=/home/zsj/test/upper,workdir=/home/zsj/test/work overlay /home/zsj/test/merged root@debian:~/test# rm -rf merged/a rm: cannot remove 'merged/a': Input/output error -- System Information: Debian Release: bullseye/sid APT prefers testing APT policy: (500, 'testing') Architecture: amd64 (x86_64) Kernel: Linux 5.7.0-2-amd64 (SMP w/4 CPU threads) Kernel taint flags: TAINT_USER, TAINT_FIRMWARE_WORKAROUND Locale: LANG=en_US.UTF-8, LC_CTYPE=en_US.UTF-8 (charmap=UTF-8), LANGUAGE not set Shell: /bin/sh linked to /usr/bin/dash Init: systemd (via /run/systemd/system)
