On Thu, Jan 28, 2021 at 02:20:09PM -0700, Chris Murphy wrote: > On Thu, Jan 28, 2021 at 2:08 PM Adam Williamson > <adamwill@xxxxxxxxxxxxxxxxx> wrote: > > > > On Thu, 2021-01-28 at 13:46 -0700, Chris Murphy wrote: > > > > > > OK I'm seeing this problem in a VM with > > > Fedora-Workstation-Live-x86_64-Rawhide-20210128.n.0.iso but I'm not > > > sure how consistent it is yet. MemTotal is ~3G for a VM that has 4G > > > allocated. Something's wrong... > > > > > > VM 5.11.0-0.rc5.20210127git2ab38c17aac1.136.fc34.x86_64 > > > [ 0.701792] Memory: 3016992K/4190656K available (43019K kernel > > > code, 11036K rwdata, 27184K rodata, 5036K init, 31780K bss, 1173408K > > > reserved, 0K cma-reserved) > > > > > > Baremetal 5.10.11-200.fc33.x86_64 > > > [ 0.125875] Memory: 12059084K/12493424K available (14345K kernel > > > code, 3465K rwdata, 9704K rodata, 2536K init, 5504K bss, 434080K > > > reserved, 0K cma-reserved) > > > > > > Why is reserved so much higher in the VM case? It clearly sees the 4G > > > but is delimiting it to 3G for some reason I don't understand. This is > > > well before the zram module is loaded, by the way. > > > > I've filed https://bugzilla.redhat.com/show_bug.cgi?id=1921923 for > > this. zdzichu suggests https://lkml.org/lkml/2021/1/25/701 may be > > related. > > I'm not sure, because > Revert "mm: fix initialization of struct page for holes in memory layout" > landed in 5.10.11 and I wasn't have any of these memory related issues > with 5.10.10. I'm only seeing this so far with the debug kernels. Even > rc5 nodebug doesn't exhibit the problem. >From https://lkml.org/lkml/2021/1/26/1215: > I ran just the revert of bde9cfa3afe4 through CI twice, on both > occasions all machines failed to boot. It seems that the revert is not enough. But it seems at this point that this is some kernel regression. I'll keep the fraxion bump in zram-generator-defaults for now. Zbyszek _______________________________________________ devel mailing list -- devel@xxxxxxxxxxxxxxxxxxxxxxx To unsubscribe send an email to devel-leave@xxxxxxxxxxxxxxxxxxxxxxx Fedora Code of Conduct: https://docs.fedoraproject.org/en-US/project/code-of-conduct/ List Guidelines: https://fedoraproject.org/wiki/Mailing_list_guidelines List Archives: https://lists.fedoraproject.org/archives/list/devel@xxxxxxxxxxxxxxxxxxxxxxx
