Tested with Gerald's patch. It can fix the task-size-overrun hang issue on s390x. Test report could be found here: http://pastebin.ubuntu.com/25765114/
I will check with powerpc later. Thanks -- 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/1718107 Title: task-size-overrun test will hang on IBM s390x zKVM / zVM Status in Ubuntu on IBM z Systems: Confirmed Status in linux package in Ubuntu: Confirmed Bug description: This issue does not exist on other amd64 / i386 / arm64 boxes. Steps: 1. Clone git://kernel.ubuntu.com/ubuntu/autotest-client-tests 2. Untar libhugetlbfs/libhugetlbfs-2.20.tar.gz 3. Run `sudo BUILDTYPE=NATIVEONLY make check` in the extracted libhugetlbfs-2.20 directory 4. Hit Ctrl + C to terminate it From the output you will see it get stuck: truncate_above_4GB (1024K: 64): PASS brk_near_huge (1024K: 64): brk_near_huge: malloc.c:2427: sysmalloc: Assertion `(old_top == initial_top (av) && old_size == 0) || ((unsigned long) (old_size) >= MINSIZE && prev_inuse (old_top) && ((unsigned long) old_end & (pagesize - 1)) == 0)' failed. task-size-overrun (1024K: 64): From the syslog you can see brk_near_huge has crashed: Sep 19 07:28:25 s2lp6g004 rsyslogd-2007: action 'action 10' suspended, next retry is Tue Sep 19 07:29:55 2017 [v8.16.0 try http://www.rsyslog.com/e/2007 ] Sep 19 07:28:36 s2lp6g004 AutotestCrashHandler: Application brk_near_huge, PID 10474 crashed Sep 19 07:28:36 s2lp6g004 AutotestCrashHandler: Writing core files to ['/home/ubuntu/autotest/client/results/default/libhugetlbfs/debug/crash.brk_near_huge.10474'] Sep 19 07:28:36 s2lp6g004 AutotestCrashHandler: Could not determine from which application core file /home/ubuntu/autotest/client/results/default/libhugetlbfs/debug/crash.brk_near_huge.10474/core is from After hitting Ctrl + C to interrupt, kernel trace could be found in syslog: Sep 19 07:30:02 s2lp6g004 kernel: [11224.325504] report_user_fault: 35 callbacks suppressed Sep 19 07:30:02 s2lp6g004 kernel: [11224.325507] User process fault: interruption code 0010 ilc:3 in stack_grow_into_huge[12f880000+4000] Sep 19 07:30:02 s2lp6g004 kernel: [11224.325520] Failing address: 000003ffe72fe000 TEID: 000003ffe72fe400 Sep 19 07:30:02 s2lp6g004 kernel: [11224.325521] Fault in primary space mode while using user ASCE. Sep 19 07:30:02 s2lp6g004 kernel: [11224.325523] AS:00000000551701c7 R3:0000000048d88007 S:0000000000000020 Sep 19 07:30:02 s2lp6g004 kernel: [11224.325527] CPU: 0 PID: 10481 Comm: stack_grow_into Tainted: P D O 4.13.0-11-generic #12-Ubuntu Sep 19 07:30:02 s2lp6g004 kernel: [11224.325527] Hardware name: IBM 2964 N63 400 (KVM/Linux) Sep 19 07:30:02 s2lp6g004 kernel: [11224.325528] task: 0000000062450000 task.stack: 0000000062b3c000 Sep 19 07:30:02 s2lp6g004 kernel: [11224.325529] User PSW : 0705300180000000 000000012f8819a8 Sep 19 07:30:02 s2lp6g004 kernel: [11224.325530] R:0 T:1 IO:1 EX:1 Key:0 M:1 W:0 P:1 AS:0 CC:3 PM:0 RI:0 EA:3 Sep 19 07:30:02 s2lp6g004 kernel: [11224.325531] User GPRS: 000002001c51e2f8 fffffffffffff000 0000000000000000 0000000000000004 Sep 19 07:30:02 s2lp6g004 kernel: [11224.325531] 000003fff72fe5c0 0000000000000000 0000000000000003 0000000157806000 Sep 19 07:30:02 s2lp6g004 kernel: [11224.325532] fffffffffff00000 0000000000100000 000003fff7000000 000003fff72fe520 Sep 19 07:30:02 s2lp6g004 kernel: [11224.325532] 000002001c426000 0000000000000003 000000012f8819a2 000003ffe72fe518 Sep 19 07:30:02 s2lp6g004 kernel: [11224.325540] User Code: 000000012f881996: e548b0a80001 mvghi 168(%r11),1 Sep 19 07:30:02 s2lp6g004 kernel: [11224.325540] 000000012f88199c: c0e5fffffc86 brasl %r14,12f8812a8 Sep 19 07:30:02 s2lp6g004 kernel: [11224.325540] #000000012f8819a2: c2f410000008 slgfi %r15,268435464 Sep 19 07:30:02 s2lp6g004 kernel: [11224.325540] >000000012f8819a8: e54cf0a00001 mvhi 160(%r15),1 Sep 19 07:30:02 s2lp6g004 kernel: [11224.325540] 000000012f8819ae: 4110f0a0 la %r1,160(%r15) Sep 19 07:30:02 s2lp6g004 kernel: [11224.325540] 000000012f8819b2: ec1afff8a065 clgrj %r1,%r10,10,12f8819a2 Sep 19 07:30:02 s2lp6g004 kernel: [11224.325540] 000000012f8819b8: b24f0010 ear %r1,%a0 Sep 19 07:30:02 s2lp6g004 kernel: [11224.325540] 000000012f8819bc: eb110020000d sllg %r1,%r1,32 Sep 19 07:30:02 s2lp6g004 kernel: [11224.325549] Last Breaking-Event-Address: Sep 19 07:30:02 s2lp6g004 kernel: [11224.325552] [<000002001c7f26e8>] 0x2001c7f26e8 Sep 19 07:30:02 s2lp6g004 kernel: [11224.325562] Process 10481(stack_grow_into) has RLIMIT_CORE set to 1 Sep 19 07:30:02 s2lp6g004 kernel: [11224.325563] Aborting core Please find attachment for a more detailed syslog and core dump file. ProblemType: Bug DistroRelease: Ubuntu 17.10 Package: linux-image-4.13.0-11-generic 4.13.0-11.12 ProcVersionSignature: Ubuntu 4.13.0-11.12-generic 4.13.1 Uname: Linux 4.13.0-11-generic s390x NonfreeKernelModules: zfs zunicode zavl zcommon znvpair AlsaDevices: Error: command ['ls', '-l', '/dev/snd/'] failed with exit code 2: ls: cannot access '/dev/snd/': No such file or directory AplayDevices: Error: [Errno 2] No such file or directory: 'aplay' ApportVersion: 2.20.7-0ubuntu1 Architecture: s390x ArecordDevices: Error: [Errno 2] No such file or directory: 'arecord' CRDA: Error: command ['iw', 'reg', 'get'] failed with exit code 1: nl80211 not found. CurrentDmesg: Date: Tue Sep 19 07:16:55 2017 IwConfig: Error: [Errno 2] No such file or directory: 'iwconfig' Lspci: Lsusb: Error: command ['lsusb'] failed with exit code 1: PciMultimedia: ProcEnviron: TERM=xterm-256color PATH=(custom, no user) XDG_RUNTIME_DIR=<set> LANG=C SHELL=/bin/bash ProcFB: Error: [Errno 2] No such file or directory: '/proc/fb' ProcKernelCmdLine: root=UUID=d86dc8de-6ac8-4e4b-aba8-92872a209a8c crashkernel=196M RelatedPackageVersions: linux-restricted-modules-4.13.0-11-generic N/A linux-backports-modules-4.13.0-11-generic N/A linux-firmware 1.168 RfKill: Error: [Errno 2] No such file or directory: 'rfkill' SourcePackage: linux UpgradeStatus: No upgrade log present (probably fresh install) To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu-z-systems/+bug/1718107/+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
