I also have this issue on a Raspberry Pi 4 with 8Gb RAM, running an armv7l system, when attempting to upgrade linux-raspberrypi4 from version 5.10.52-1 to 5.10.52-5. Upon reboot the system is sluggish, barely responsive, and soon the oom-killer starts to fire at will. Fortunately I have my system on lvm and perform upgrades with a snapshot taken, so when the oom-kill eventually quieted down, and I recovered a usable(-ish) system (despite all the hate for the oom-killer, it did its job in this case, eventually!) I could revert to the snapshot and reboot (barely) to a pre-upgrade state.
Something strange seems to be going on though, because the -5 rel linux-raspberrypi4 package points to commit 6495fa3396fb387d3871ced42a30281fe7be5352, which according to the repo timeline
https://github.com/raspberrypi/linux/commits/rpi-5.10.y means it includes the reversions made in
https://github.com/raspberrypi/linux/pull/4478 that are supposed to have solved
https://github.com/raspberrypi/linux/issues/4474 (but I note that issue is still open despite a comment by kwirk 8 days ago saying pull request 4478 solved it…)
Does anybody else have issues with 5.10.52-5 on armv7h or should I be looking elsewhere for an explanation to my oom problems?
Thanks in advance for any thoughts or pointers.
Regards,
Mark.