(In reply to Wenruo Qu from comment #22) > I guess Nik has pinned down the root cause, and the upstream fix is here: > > https://patchwork.kernel.org/project/linux-btrfs/patch/20211102124916.433836- > 1-nborisov@suse.com/ > > Mind to test if this patch solves the problem? This patch is in kernel 5.15.5 which is currently tested in staging, and thus, should land in :Factory:ARM in the coming days.