On Wed, 2020-03-11 at 11:29 +0100, Martin Wilck wrote: > On Mon, 2020-03-02 at 11:55 +0800, He Zhe wrote: > > Hi, > > > > Since the following commit > > https://git.kernel.org/pub/scm/linux/kernel/git/axboe/linux-block.git/commit/?h=for-5.5/disk-revalidate&id=6917d0689993f46d97d40dd66c601d0fd5b1dbdd > > until now(v5.6-rc4), > > > > If we start udisksd service of systemd(v244), systemd-udevd will > > scan > > /dev/hdc > > (the cdrom device created by default in qemu(v4.2.0)). systemd- > > udevd > > will > > endlessly run and cause OOM. > > I've tried to reproduce this, but so far I haven't been able to. > Perhaps because the distro 5.5.7 kernel I've tried (which contains > the > offending commit 142fe8f) has no IDE support - the qemu IDE CD shows > up > as sr0, with the ata_piix driver. I have systemd-udevd 244. Enabling > udisksd makes no difference, the system runs stably. ISO images can > be "ejected" and loaded, single uevents are received and processed. > > Does this happen for you if you use ata_piix? I have enabled the ATA drivers on my test system now, and I still don't see the issue. "hd*" for CDROM devices has been marked deprecated in udev since 2009 (!). Is it possible that you have the legacy udisksd running, and didn't disable CD-ROM polling? Martin
