** Also affects: linux-realtime (Ubuntu)
Importance: Undecided
Status: New
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https://bugs.launchpad.net/bugs/2022892
Title:
emulator in ubuntu_kvm_unit_test timeout with "jump to non-canonical
address" test with J-realtime on openstack AMD64
Status in ubuntu-kernel-tests:
New
Status in linux-realtime package in Ubuntu:
New
Bug description:
emulator test in ubuntu_kvm_unit_test will timeout with J-realtime on
openstack amd64 instance. This issue can be seen after we start
testing on openstack with 5.15.0-1036.39 in sru-20230320.
Test log:
Running
'/home/ubuntu/autotest/client/tmp/ubuntu_kvm_unit_tests/src/kvm-unit-tests/tests/emulator'
BUILD_HEAD=d8edb59a
timeout -k 1s --foreground 90s /usr/bin/qemu-system-x86_64 --no-reboot
-nodefaults -device pc-testdev -device isa-debug-exit,iobase=0xf4,iosize=0x4
-vnc none -serial stdio -device pci-testdev -machine accel=tcg -kernel
/tmp/tmp.ZwF6eq54JA -smp 1 # -initrd /tmp/tmp.zaTVj0FnC8
enabling apic
smp: waiting for 0 APs
SKIP: Skipping tests the require forced emulation, use
kvm.force_emulation_prefix=1 to enable
paging enabled
cr0 = 80010011
cr3 = 1007000
cr4 = 20
PASS: mov reg, r/m (1)
PASS: or
PASS: add
PASS: xor
PASS: sub
PASS: adc(0)
PASS: adc(0)
PASS: sbb(0)
PASS: sbb(1)
PASS: and
PASS: test
PASS: repe/cmpsb (1)
PASS: repe cmpsb (1.zf)
PASS: repe cmpsw (1)
PASS: repe cmpll (1)
PASS: repe cmpsq (1)
PASS: repe cmpsb (2)
PASS: repe cmpsw (2)
PASS: repe cmpll (2)
PASS: repe cmpsq (2)
PASS: repe/cmpsb (1)
PASS: repe cmpsb (1.zf)
PASS: repe cmpsw (1)
PASS: repe cmpll (1)
PASS: repe cmpsq (1)
PASS: repe cmpsb (2)
PASS: repe cmpsw (2)
PASS: repe cmpll (2)
PASS: repe cmpsq (2)
PASS: scasb match
PASS: scasb mismatch
PASS: scasw match
PASS: scasw mismatch
PASS: scasd match
PASS: scasd mismatch
PASS: scasq match
PASS: scasq mismatch
PASS: smsw (1)
PASS: smsw (2)
PASS: smsw (3)
before 80010011 after 80010019
PASS: lmsw (1)
before 80010011 after 80010011
PASS: lmsw (2)
PASS: lmsw (3)
PASS: outsb up
PASS: outsb down
PASS: incl
PASS: decl
PASS: incb
PASS: decb
PASS: lock incl
PASS: lock decl
PASS: lock incb
PASS: lock decb
PASS: lock negl
PASS: lock notl
PASS: lock negb
PASS: lock notb
PASS: btcl imm8, r/m
PASS: btcl reg, r/m
PASS: btcq reg, r/m
PASS: bsfw r/m, reg
PASS: bsfl r/m, reg
PASS: bsfq r/m, reg
PASS: bsfq r/m, reg
PASS: bsrw r/m, reg
PASS: bsrl r/m, reg
PASS: bsrq r/m, reg
PASS: bsrq r/m, reg
PASS: imul ax, mem
PASS: imul eax, mem
PASS: imul ax, mem, imm8
PASS: imul eax, mem, imm8
PASS: imul ax, mem, imm
PASS: imul eax, mem, imm
PASS: imul rax, mem
PASS: imul rax, mem, imm8
PASS: imul rax, mem, imm
PASS: movdqu (read)
PASS: movdqu (write)
PASS: movaps (read)
PASS: movaps (write)
PASS: movapd (read)
PASS: movapd (write)
PASS: movups (read)
PASS: movups (write)
PASS: movupd (read)
PASS: movupd (write)
PASS: movups unaligned
PASS: movupd unaligned
FAIL: unaligned movaps exception
PASS: movups unaligned crosspage
PASS: movups crosspage exception
PASS: shld (cl)
PASS: shrd (cl)
PASS: ltr
PASS: cross-page mmio read
PASS: cross-page mmio write
PASS: string_io_mmio
SKIP: MOVBE unsupported by CPU
PASS: no fep: #DB occurred after MOV SS
PASS: push $imm8
PASS: push %reg
PASS: push mem
PASS: push $imm
PASS: pop mem
PASS: pop mem (2)
PASS: pop reg
PASS: ret
PASS: leave
PASS: enter
PASS: xchg reg, r/m (1)
PASS: xchg reg, r/m (2)
PASS: xchg reg, r/m (3)
PASS: xchg reg, r/m (4)
PASS: xadd reg, r/m (1)
PASS: xadd reg, r/m (2)
PASS: xadd reg, r/m (3)
PASS: xadd reg, r/m (4)
PASS: mov %cr8
PASS: ljmp
PASS: divq (fault)
PASS: divq (1)
PASS: mulb mem
PASS: mulw mem
PASS: mull mem
PASS: mulq mem
PASS: movq (mmx, read)
PASS: movq (mmx, write)
PASS: movb $imm, 0(%rip)
PASS: Test ret/iret with a nullified segment
PASS: mov null, %ss
FAIL: mov null, %ss (with ss.rpl != cpl)
PASS: cmovnel
PASS: push16
qemu-system-x86_64: terminating on signal 15 from pid 9798 (timeout)
FAIL emulator (timeout; duration=90s)
Bump the timeout to 180 seconds does not help. This issue still exist
with the latest upstream kvm-unit-tests code (02d8befe99f8)
It's the test_jmp_noncanonical() test in test_emulator_64() that cause
this hang. Comment it out can make this test finish properly.
It's worthy to note that this test has passed with j/ibm on openstack
amd64.
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