Thanks Paolo and John. I've uploaded a cma.4 kernel to ppa:dannf/cma that includes the following additional fix:
https://git.kernel.org/pub/scm/linux/kernel/git/next/linux- next.git/commit/?id=e7a647580852f90b7f9a5b940e7eaffa105f6271 I'll get some non-ARM architecture testing on that before submitting for the next SRU cycle. ** Also affects: linux (Ubuntu Eoan) Importance: High Status: Confirmed ** Also affects: linux (Ubuntu Disco) Importance: Undecided Status: New ** Changed in: linux (Ubuntu Disco) Status: New => In Progress ** Changed in: linux (Ubuntu Eoan) Status: Confirmed => In Progress ** Changed in: linux (Ubuntu Disco) Assignee: (unassigned) => dann frazier (dannf) ** Changed in: linux (Ubuntu Disco) Importance: Undecided => High ** Changed in: linux (Ubuntu Eoan) Assignee: (unassigned) => dann frazier (dannf) -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu. https://bugs.launchpad.net/bugs/1823753 Title: arm64: cma_alloc errors at boot Status in linux package in Ubuntu: In Progress Status in linux source package in Disco: In Progress Status in linux source package in Eoan: In Progress Bug description: On some arm64 systems[*] we are seeing a spew of messages on the console: [ 19.534097] cma: cma_alloc: alloc failed, req-size: 64 pages, ret: -12 [ 19.534109] cma: cma_alloc: alloc failed, req-size: 16 pages, ret: -12 [ 19.534113] cma: cma_alloc: alloc failed, req-size: 64 pages, ret: -12 [ 19.534126] cma: cma_alloc: alloc failed, req-size: 16 pages, ret: -12 [ 19.534130] cma: cma_alloc: alloc failed, req-size: 64 pages, ret: -12 [ 19.534142] cma: cma_alloc: alloc failed, req-size: 16 pages, ret: -12 [ 19.534146] cma: cma_alloc: alloc failed, req-size: 64 pages, ret: -12 [ 19.534157] cma: cma_alloc: alloc failed, req-size: 16 pages, ret: -12 [ 19.534161] cma: cma_alloc: alloc failed, req-size: 64 pages, ret: -12 [ 19.534173] cma: cma_alloc: alloc failed, req-size: 16 pages, ret: -12 [ 19.534177] cma: cma_alloc: alloc failed, req-size: 64 pages, ret: -12 This appears to be non-fatal - impacted systems all eventually boot. But, at least in the case of the HP m400, it slows down boot enough that MAAS' default timeout will expire before completing deployment. [*] Observed on a HiSilicon D06 w/ SMMU disabled in the BIOS, as well as an HP m400 (APM X-Gene) cartridge - although, not on another one that - in theory - should be identical. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1823753/+subscriptions -- Mailing list: https://launchpad.net/~kernel-packages Post to : kernel-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~kernel-packages More help : https://help.launchpad.net/ListHelp
