No, this has been identified as an unfortunate fallout from Kernel Address Space Layout Randomization. I am working on it. But right now you would need to re-compile the kernel and disable CONFIG_RANDOMIZE_BASE. I shared the kernel that I used to confirm this on http://people.canonical.com/~smb/lp1350522/. Right now, I need to figure out why this has this effect on PV guests and also why the command line that is supposed to disable it (nokaslr) is not helping.
-- 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/1350522 Title: EC2 kernel crash due to vmalloc Status in “linux” package in Ubuntu: Confirmed Status in “linux” source package in Utopic: Confirmed Bug description: During Alpha-2 automated testing, I saw the following in a log: 19:35:02 [ 2.475810] systemd-udevd[95]: starting version 204 19:35:02 [ 2.547049] ------------[ cut here ]------------ 19:35:02 [ 2.547065] WARNING: CPU: 0 PID: 97 at /build/buildd/linux-3.16.0/mm/vmalloc.c:128 vmap_page_range_noflush+0x2d1/0x370() 19:35:02 [ 2.547069] Modules linked in: 19:35:02 [ 2.547073] CPU: 0 PID: 97 Comm: systemd-udevd Not tainted 3.16.0-6-generic #11-Ubuntu 19:35:02 [ 2.547077] 0000000000000009 ffff880002defb98 ffffffff81755538 0000000000000000 19:35:02 [ 2.547082] ffff880002defbd0 ffffffff8106bb0d ffff88000400ec88 0000000000000001 19:35:02 [ 2.547086] ffff880002fcfb00 ffffffffc0391000 0000000000000000 ffff880002defbe0 19:35:02 [ 2.547090] Call Trace: 19:35:02 [ 2.547096] [<ffffffff81755538>] dump_stack+0x45/0x56 19:35:02 [ 2.547101] [<ffffffff8106bb0d>] warn_slowpath_common+0x7d/0xa0 19:35:02 [ 2.547104] [<ffffffff8106bbea>] warn_slowpath_null+0x1a/0x20 19:35:02 [ 2.547108] [<ffffffff81197c31>] vmap_page_range_noflush+0x2d1/0x370 19:35:02 [ 2.547112] [<ffffffff81197cfe>] map_vm_area+0x2e/0x40 19:35:02 [ 2.547115] [<ffffffff8119a058>] __vmalloc_node_range+0x188/0x280 19:35:02 [ 2.547120] [<ffffffff810e92b4>] ? module_alloc_update_bounds+0x14/0x70 19:35:02 [ 2.547124] [<ffffffff810e92b4>] ? module_alloc_update_bounds+0x14/0x70 19:35:02 [ 2.547129] [<ffffffff8104f294>] module_alloc+0x74/0xd0 19:35:02 [ 2.547132] [<ffffffff810e92b4>] ? module_alloc_update_bounds+0x14/0x70 19:35:02 [ 2.547135] [<ffffffff810e92b4>] module_alloc_update_bounds+0x14/0x70 19:35:02 [ 2.547146] [<ffffffff810e9a6c>] layout_and_allocate+0x74c/0xc70 19:35:02 [ 2.547149] [<ffffffff810ea063>] load_module+0xd3/0x1b70 19:35:02 [ 2.547154] [<ffffffff811cfeb1>] ? vfs_read+0xf1/0x170 19:35:02 [ 2.547157] [<ffffffff810e7aa1>] ? copy_module_from_fd.isra.46+0x121/0x180 19:35:02 [ 2.547161] [<ffffffff810ebc76>] SyS_finit_module+0x86/0xb0 19:35:02 [ 2.547167] [<ffffffff8175de7f>] tracesys+0xe1/0xe6 19:35:02 [ 2.547169] ---[ end trace 8a5de7fc66e75fe4 ]--- 19:35:02 [ 2.547172] vmalloc: allocation failure, allocated 20480 of 24576 bytes 19:35:02 [ 2.547175] systemd-udevd: page allocation failure: order:0, mode:0xd2 19:35:02 [ 2.547180] CPU: 0 PID: 97 Comm: systemd-udevd Tainted: G W 3.16.0-6-generic #11-Ubuntu 19:35:02 [ 2.547183] ffffffff81a88bc0 ffff880002defc08 ffffffff81755538 00000000000000d2 19:35:02 [ 2.547187] ffff880002defc90 ffffffff811642bf ffffffff81a88bc0 ffff880002defc28 19:35:02 [ 2.547191] 00003fff00000018 ffff880002defca0 ffff880002defc40 0000000000000163 19:35:02 [ 2.547195] Call Trace: 19:35:02 [ 2.547197] [<ffffffff81755538>] dump_stack+0x45/0x56 19:35:02 [ 2.547202] [<ffffffff811642bf>] warn_alloc_failed+0xdf/0x130 19:35:02 [ 2.547207] [<ffffffff8119a118>] __vmalloc_node_range+0x248/0x280 19:35:02 [ 2.547210] [<ffffffff810e92b4>] ? module_alloc_update_bounds+0x14/0x70 19:35:02 [ 2.547214] [<ffffffff810e92b4>] ? module_alloc_update_bounds+0x14/0x70 19:35:02 [ 2.547217] [<ffffffff8104f294>] module_alloc+0x74/0xd0 19:35:02 [ 2.547220] [<ffffffff810e92b4>] ? module_alloc_update_bounds+0x14/0x70 19:35:02 [ 2.547224] [<ffffffff810e92b4>] module_alloc_update_bounds+0x14/0x70 19:35:02 [ 2.547229] [<ffffffff810e9a6c>] layout_and_allocate+0x74c/0xc70 19:35:02 [ 2.547232] [<ffffffff810ea063>] load_module+0xd3/0x1b70 19:35:02 [ 2.547235] [<ffffffff811cfeb1>] ? vfs_read+0xf1/0x170 19:35:02 [ 2.547238] [<ffffffff810e7aa1>] ? copy_module_from_fd.isra.46+0x121/0x180 19:35:02 [ 2.547242] [<ffffffff810ebc76>] SyS_finit_module+0x86/0xb0 19:35:02 [ 2.547246] [<ffffffff8175de7f>] tracesys+0xe1/0xe6 19:35:02 [ 2.547248] Mem-Info: --- AlsaDevices: total 0 crw-rw---- 1 root audio 116, 1 Jul 30 20:19 seq crw-rw---- 1 root audio 116, 33 Jul 30 20:19 timer AplayDevices: Error: [Errno 2] No such file or directory ApportVersion: 2.14.4-0ubuntu2 Architecture: amd64 ArecordDevices: Error: [Errno 2] No such file or directory AudioDevicesInUse: Error: command ['fuser', '-v', '/dev/snd/seq', '/dev/snd/timer'] failed with exit code 1: CRDA: Error: [Errno 2] No such file or directory CurrentDmesg: [ 42.901579] systemd-logind[1378]: New seat seat0. [ 42.932887] systemd-logind[1378]: New session 1 of user ubuntu. DistroRelease: Ubuntu 14.10 Ec2AMI: ami-c571d8d8 Ec2AMIManifest: (unknown) Ec2AvailabilityZone: sa-east-1b Ec2InstanceType: m3.medium Ec2Kernel: aki-5553f448 Ec2Ramdisk: unavailable IwConfig: Error: [Errno 2] No such file or directory Lspci: Lsusb: Error: command ['lsusb'] failed with exit code 1: unable to initialize libusb: -99 Package: linux-image-virtual 3.16.0.5.6 PackageArchitecture: amd64 PciMultimedia: ProcFB: ProcKernelCmdLine: root=LABEL=cloudimg-rootfs ro console=hvc0 ProcModules: ProcVersionSignature: User Name 3.16.0-5.10-generic 3.16.0-rc6 RelatedPackageVersions: linux-restricted-modules-3.16.0-5-generic N/A linux-backports-modules-3.16.0-5-generic N/A linux-firmware N/A RfKill: Error: [Errno 2] No such file or directory Tags: utopic ec2-images third-party-packages Uname: Linux 3.16.0-5-generic x86_64 UpgradeStatus: No upgrade log present (probably fresh install) UserGroups: adm audio cdrom dialout dip floppy netdev plugdev sudo video _MarkForUpload: True --- AlsaDevices: total 0 crw-rw---- 1 root audio 116, 1 Jul 31 20:13 seq crw-rw---- 1 root audio 116, 33 Jul 31 20:13 timer AplayDevices: Error: [Errno 2] No such file or directory ApportVersion: 2.14.5-0ubuntu1 Architecture: amd64 ArecordDevices: Error: [Errno 2] No such file or directory AudioDevicesInUse: Error: command ['fuser', '-v', '/dev/snd/seq', '/dev/snd/timer'] failed with exit code 1: CRDA: Error: [Errno 2] No such file or directory CurrentDmesg: [ 17.975584] systemd-logind[1248]: New seat seat0. [ 17.993902] systemd-logind[1248]: New session 1 of user ubuntu. DistroRelease: Ubuntu 14.10 Ec2AMI: ami-b7ce1dc0 Ec2AMIManifest: (unknown) Ec2AvailabilityZone: eu-west-1c Ec2InstanceType: m3.medium Ec2Kernel: aki-52a34525 Ec2Ramdisk: unavailable IwConfig: Error: [Errno 2] No such file or directory Lspci: Lsusb: Error: command ['lsusb'] failed with exit code 1: unable to initialize libusb: -99 Package: linux-image-virtual 3.16.0.6.7 PackageArchitecture: amd64 PciMultimedia: ProcFB: ProcKernelCmdLine: root=LABEL=cloudimg-rootfs ro console=hvc0 initcall_debug debug ignore_loglevel LOGLEVEL=8 ProcModules: ProcVersionSignature: Ubuntu 3.16.0-6.11-generic 3.16.0-rc7 RelatedPackageVersions: linux-restricted-modules-3.16.0-6-generic N/A linux-backports-modules-3.16.0-6-generic N/A linux-firmware N/A RfKill: Error: [Errno 2] No such file or directory Tags: utopic ec2-images Uname: Linux 3.16.0-6-generic x86_64 UpgradeStatus: No upgrade log present (probably fresh install) UserGroups: _MarkForUpload: True To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1350522/+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
