A quick bisect shows commit 1c93387eecbe899816765d8f9be296ba2255ec75 x86: Add utility to run function in User Mode is causing this issue.
$ git bisect log git bisect start # bad: [2352e986e4599bc4842c225762c78fa49f18648d] x86: move TSC_ADJUST MSR to msr.h git bisect bad 2352e986e4599bc4842c225762c78fa49f18648d # good: [a90f5a3c386445aa129a55090ea1998740772597] x86: prevent GCC from using sse* instructions git bisect good a90f5a3c386445aa129a55090ea1998740772597 # bad: [5722aff10fa583bddd29378dc8f1006cff7631c4] x86: nVMX: Verify pass-through IOAPIC & LAPIC to guest after ioapic scan git bisect bad 5722aff10fa583bddd29378dc8f1006cff7631c4 # bad: [9f02572626e784fa78ce708d3f3566cda48e2378] x86: Add definition for 64 bit Segment descriptor git bisect bad 9f02572626e784fa78ce708d3f3566cda48e2378 # good: [230db53f9c26b44633b41393e9b600eb087814b3] kvm: debug: split bp_addr and db_addr git bisect good 230db53f9c26b44633b41393e9b600eb087814b3 # bad: [2bac62497563c072d0325ad5841008e68033eced] x86: Add Test Utility to run in User Mode and catch exceptions git bisect bad 2bac62497563c072d0325ad5841008e68033eced # bad: [1c93387eecbe899816765d8f9be296ba2255ec75] x86: Add utility to run function in User Mode git bisect bad 1c93387eecbe899816765d8f9be296ba2255ec75 # first bad commit: [1c93387eecbe899816765d8f9be296ba2255ec75] x86: Add utility to run function in User Mode -- 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/1765366 Title: Unable to build kvm-unit-test on i386 system Status in linux package in Ubuntu: Triaged Bug description: When trying to build the kvm-unit-test on i386 node, it will fail with: gcc -m32 -O1 -g -MMD -MF lib/x86/.usermode.d -Wall -Wwrite-strings -Wclobbered -Wempty-body -Wuninitialized -Wignored-qualifiers -Wunused-but-set-parameter -Werror -fno-omit-frame-pointer -Wno-frame-address -fno-pic -no-pie -Wmissing-parameter-type -Wold-style-declaration -Woverride-init -ffreestanding -I /home/ubuntu/autotest/client/tmp/ubuntu_kvm_unit_tests/src/kvm-unit-tests/lib -I lib -c -o lib/x86/usermode.o lib/x86/usermode.c <builtin>: recipe for target 'lib/x86/usermode.o' failed stderr: lib/x86/usermode.c: In function ‘run_in_user’: lib/x86/usermode.c:49:2: error: inconsistent operand constraints in an ‘asm’ asm volatile ( ^~~ make: *** [lib/x86/usermode.o] Error 1 Steps: 1. git clone --depth=1 https://git.kernel.org/pub/scm/virt/kvm/kvm-unit-tests.git 2. ./configure 3. make This is a test suite issue, not a regression, as it can be reproduced on 4.13.0-38 ProblemType: Bug DistroRelease: Ubuntu 17.10 Package: linux-image-4.13.0-38-generic 4.13.0-38.43 ProcVersionSignature: User Name 4.13.0-38.43-generic 4.13.16 Uname: Linux 4.13.0-38-generic i686 AlsaDevices: total 0 crw-rw---- 1 root audio 116, 1 Apr 19 09:39 seq crw-rw---- 1 root audio 116, 33 Apr 19 09:39 timer AplayDevices: Error: [Errno 2] No such file or directory: 'aplay': 'aplay' ApportVersion: 2.20.7-0ubuntu3.8 Architecture: i386 ArecordDevices: Error: [Errno 2] No such file or directory: 'arecord': 'arecord' AudioDevicesInUse: Error: command ['fuser', '-v', '/dev/snd/seq', '/dev/snd/timer'] failed with exit code 1: CurrentDmesg: Date: Thu Apr 19 10:12:48 2018 IwConfig: Error: [Errno 2] No such file or directory: 'iwconfig': 'iwconfig' Lsusb: Bus 002 Device 002: ID 8087:0020 Intel Corp. Integrated Rate Matching Hub Bus 002 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub Bus 001 Device 003: ID 0424:2514 Standard Microsystems Corp. USB 2.0 Hub Bus 001 Device 002: ID 8087:0020 Intel Corp. Integrated Rate Matching Hub Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub MachineType: Dell Inc. PowerEdge R310 PciMultimedia: ProcEnviron: TERM=xterm-256color PATH=(custom, no user) XDG_RUNTIME_DIR=<set> LANG=C.UTF-8 SHELL=/bin/bash ProcFB: 0 mgadrmfb ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-4.13.0-38-generic root=UUID=7b91a2b8-2e02-407e-a51d-766f6d969020 ro RelatedPackageVersions: linux-restricted-modules-4.13.0-38-generic N/A linux-backports-modules-4.13.0-38-generic N/A linux-firmware 1.169.3 RfKill: Error: [Errno 2] No such file or directory: 'rfkill': 'rfkill' SourcePackage: linux UpgradeStatus: No upgrade log present (probably fresh install) dmi.bios.date: 08/17/2011 dmi.bios.vendor: Dell Inc. dmi.bios.version: 1.8.2 dmi.board.name: 05XKKK dmi.board.vendor: Dell Inc. dmi.board.version: A05 dmi.chassis.type: 23 dmi.chassis.vendor: Dell Inc. dmi.modalias: dmi:bvnDellInc.:bvr1.8.2:bd08/17/2011:svnDellInc.:pnPowerEdgeR310:pvr:rvnDellInc.:rn05XKKK:rvrA05:cvnDellInc.:ct23:cvr: dmi.product.name: PowerEdge R310 dmi.sys.vendor: Dell Inc. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1765366/+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
