>Did this issue start happening after an update/upgrade? Was there a prior kernel version where you were not having this particular problem?
Not as far as I know. I think this code has been the same for a few years, and as we know hibernate was explicitly disabled by default in Ubuntu because it couldn't be made to work reliably across a range of machines. >Would it be possible for you to test the latest upstream kernel? Refer to https://wiki.ubuntu.com/KernelMainlineBuilds . Please test the latest v4.14 kernel[0]. I'll have a go with the linked PPA. -- 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/1724265 Title: Unexpected memory allocation failure in hibernation snapshot (swsusp) Status in linux package in Ubuntu: Incomplete Bug description: In kernel 4.4.0-97, the system snapshot can fail during suspend-to- disk or -to-both even though the routine swsusp_save() believes that there is enough memory for the snapshot. What I expected to happen ========================= After 'systemctl hibernate' or 'systemctl hybrid-sleep', the requested suspend state is reached, or a diagnostic is provided. What happened instead ===================== After 'systemctl hibernate' or 'systemctl hybrid-sleep', system returns to normal desktop with no visible diagnostic after 'systemctl hibernate' or 'systemctl hybrid sleep'. System log/journal shows diagnostics and backtrace, as attached: ... Oct 17 10:51:45 Spiridion kernel: PM: Creating hibernation image: Oct 17 10:51:45 Spiridion kernel: PM: Need to copy 174616 pages Oct 17 10:51:45 Spiridion kernel: PM: Normal pages needed: 112567 + 1024, available pages: 115651 Oct 17 10:51:45 Spiridion kernel: s2both: page allocation failure: order:0, mode:0x2080120 ... Oct 17 10:51:45 Spiridion kernel: [<c13ae82f>] dump_stack+0x58/0x79 Oct 17 10:51:45 Spiridion kernel: [<c11783e6>] warn_alloc_failed+0xd6/0x110 Oct 17 10:51:45 Spiridion kernel: [<c117a994>] __alloc_pages_slowpath.constprop.104+0x6c4/0x970 Oct 17 10:51:45 Spiridion kernel: [<c117ae66>] ? __alloc_pages_nodemask+0x226/0x280 Oct 17 10:51:45 Spiridion kernel: [<c117ae66>] __alloc_pages_nodemask+0x226/0x280 Oct 17 10:51:45 Spiridion kernel: [<c10c000f>] alloc_image_page+0x1f/0x40 Oct 17 10:51:45 Spiridion kernel: [<c10c1678>] swsusp_save+0x148/0x4b0 ... And the concluding entries after the memory debugging output: Oct 17 10:51:45 Spiridion kernel: PM: Memory allocation failed Oct 17 10:51:45 Spiridion kernel: PM: Error -12 creating hibernation image At this point the swsusp_save() function has successfully checked for free memory enough_free_mem(nr_pages, nr_highmem) and then called swsusp_alloc(&orig_bm, ©_bm, nr_pages, nr_highmem) So either enough_free_mem() is not sufficiently accurate or conservative, or swsusp_alloc() is not sufficiently aggressive in using the available memory. This code seems to be the same at least down to the call to alloc_image_page() in later versions, eg 4.13.7. The functions 'systemctl hibernate', 'systemctl hybrid-sleep' have been seen to work as expected in the identical configuration when the system memory is more lightly loaded (eg "PM: Need to copy 103159 pages"). ProblemType: Bug DistroRelease: Ubuntu 16.04 Package: linux-image-generic 4.4.0.97.102 ProcVersionSignature: Ubuntu 4.4.0-97.120-generic 4.4.87 Uname: Linux 4.4.0-97-generic i686 ApportVersion: 2.20.1-0ubuntu2.10 Architecture: i386 AudioDevicesInUse: USER PID ACCESS COMMAND /dev/snd/controlC0: df 2143 F.... pulseaudio CurrentDesktop: LXDE Date: Tue Oct 17 14:52:34 2017 HibernationDevice: #RESUME=UUID=0107bf90-3e69-4f56-9a92-3477dd28b31c InstallationDate: Installed on 2017-02-12 (247 days ago) InstallationMedia: LXLE 16.04 - Release i386 MachineType: Dell Inc. Inspiron 1520 ProcFB: 0 inteldrmfb ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-4.4.0-97-generic root=UUID=b71d2286-3b2f-4856-a258-2f6bcf088c70 ro zswap.enabled=1 resume=UUID=b71d2286-3b2f-4856-a258-2f6bcf088c70 resume_offset=2363392 quiet splash vt.handoff=7 RelatedPackageVersions: linux-restricted-modules-4.4.0-97-generic N/A linux-backports-modules-4.4.0-97-generic N/A linux-firmware 1.157.12 RfKill: 0: phy0: Wireless LAN Soft blocked: no Hard blocked: no SourcePackage: linux UpgradeStatus: No upgrade log present (probably fresh install) dmi.bios.date: 07/11/2008 dmi.bios.vendor: Dell Inc. dmi.bios.version: A09 dmi.board.name: 0KY767 dmi.board.vendor: Dell Inc. dmi.chassis.type: 8 dmi.chassis.vendor: Dell Inc. dmi.modalias: dmi:bvnDellInc.:bvrA09:bd07/11/2008:svnDellInc.:pnInspiron1520:pvr:rvnDellInc.:rn0KY767:rvr:cvnDellInc.:ct8:cvr: dmi.product.name: Inspiron 1520 dmi.sys.vendor: Dell Inc. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1724265/+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
