| 2022-04-12 07:24:19 |
Po-Hsu Lin |
bug |
|
|
added bug |
| 2022-04-12 07:25:02 |
Po-Hsu Lin |
description |
Issue found on B-4.15.0-175
This failure is only visible on this node.
Running '/home/ubuntu/autotest/client/tmp/ubuntu_kvm_unit_tests/src/kvm-unit-tests/tests/rdpru'
BUILD_HEAD=16647354
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=kvm -kernel /tmp/tmp.qGIR5tvTw1 -smp 1 -cpu max # -initrd /tmp/tmp.8JuYRCFRUi
enabling apic
FAIL: RDPRU raises #UD
SUMMARY: 1 tests, 1 unexpected failures
FAIL rdpru (1 tests, 1 unexpected failures) |
Issue found on B-ibm-gt-4.15.0-1116.127
This can be reproduced with B-4.15.0-175 as well.
This failure is only visible on this node.
Running '/home/ubuntu/autotest/client/tmp/ubuntu_kvm_unit_tests/src/kvm-unit-tests/tests/rdpru'
BUILD_HEAD=16647354
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=kvm -kernel /tmp/tmp.qGIR5tvTw1 -smp 1 -cpu max # -initrd /tmp/tmp.8JuYRCFRUi
enabling apic
FAIL: RDPRU raises #UD
SUMMARY: 1 tests, 1 unexpected failures
FAIL rdpru (1 tests, 1 unexpected failures) |
|
| 2022-04-21 10:48:04 |
Po-Hsu Lin |
bug task added |
|
linux (Ubuntu) |
|
| 2022-04-21 10:48:11 |
Po-Hsu Lin |
nominated for series |
|
Ubuntu Bionic |
|
| 2022-04-21 10:48:11 |
Po-Hsu Lin |
bug task added |
|
linux (Ubuntu Bionic) |
|
| 2022-04-21 10:48:17 |
Po-Hsu Lin |
linux (Ubuntu): status |
New |
Fix Released |
|
| 2022-04-21 10:48:21 |
Po-Hsu Lin |
linux (Ubuntu Bionic): status |
New |
Confirmed |
|
| 2022-05-11 09:03:17 |
Po-Hsu Lin |
description |
Issue found on B-ibm-gt-4.15.0-1116.127
This can be reproduced with B-4.15.0-175 as well.
This failure is only visible on this node.
Running '/home/ubuntu/autotest/client/tmp/ubuntu_kvm_unit_tests/src/kvm-unit-tests/tests/rdpru'
BUILD_HEAD=16647354
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=kvm -kernel /tmp/tmp.qGIR5tvTw1 -smp 1 -cpu max # -initrd /tmp/tmp.8JuYRCFRUi
enabling apic
FAIL: RDPRU raises #UD
SUMMARY: 1 tests, 1 unexpected failures
FAIL rdpru (1 tests, 1 unexpected failures) |
[Impact]
rdpru test in ubuntu_kvm_unit_tests is to check if the RDPRU instruction can be intercepted by the Hypervisor.
RDPRU is one of the new instruction set extensions of AMD "Zen 2" CPUs that is for reading a processor register that is typically limited to privilege level zero. RDPRU allows for reading select registers at any privilege level. With Linux 5.5, the RDPRU presence will be advertised by the CPU features.
Without this patchset, the rdpru test will fail on our AMD Zen 2 system "riccioli"
[Fix]
* 9d40b85b x86/cpufeatures: Add feature bit RDPRU on AMD
* 0cb8410b kvm: svm: Intercept RDPRU
We have these patches in newer releases already, only Bionic 4.15 require this fix. And they can be cherry-picked without any conflict.
[Test]
With the patched kernel, this rdpru test will pass on the target AMD Zen 2 system.
And the rdpru flag will be available in cpuinfo:
flags : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush mmx fxsr sse sse2 ht syscall nx mmxext fxsr_opt pdpe1gb rdtscp lm constant_tsc rep_good nopl xtopology nonstop_tsc cpuid extd_apicid aperfmperf pni pclmulqdq monitor ssse3 fma cx16 pcid sse4_1 sse4_2 x2apic movbe popcnt aes xsave avx f16c rdrand lahf_lm cmp_legacy svm extapic cr8_legacy abm sse4a misalignsse 3dnowprefetch osvw ibs skinit wdt tce topoext perfctr_core perfctr_nb bpext perfctr_llc mwaitx cpb cat_l3 cdp_l3 invpcid_single hw_pstate ssbd ibrs ibpb stibp vmmcall fsgsbase bmi1 avx2 smep bmi2 erms invpcid cqm rdt_a rdseed adx smap clflushopt clwb sha_ni xsaveopt xsavec xgetbv1 xsaves cqm_llc cqm_occup_llc cqm_mbm_total cqm_mbm_local clzero irperf xsaveerptr rdpru arat npt lbrv svm_lock nrip_save tsc_scale vmcb_clean flushbyasid decodeassists pausefilter pfthreshold v_vmsave_vmload vgif umip pku ospke vaes vpclmulqdq rdpid overflow_recov succor smca
bugs : sysret_ss_attrs spectre_v1 spectre_v2 spec_store_bypass
$ sudo ./rdpru
BUILD_HEAD=16647354
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=kvm -kernel /tmp/tmp.syc17ecDpN -smp 1 -cpu max # -initrd /tmp/tmp.poLG53JqrJ
enabling apic
PASS: RDPRU raises #UD
SUMMARY: 1 tests
PASS rdpru (1 tests)
[Where problems could occur]
This patchset will add a new feature bit RDPRU, the impact should be small as it's still up to user-space for making use of it.
[Original Bug Report]
Issue found on B-ibm-gt-4.15.0-1116.127
This can be reproduced with B-4.15.0-175 as well.
This failure is only visible on this node.
Running '/home/ubuntu/autotest/client/tmp/ubuntu_kvm_unit_tests/src/kvm-unit-tests/tests/rdpru'
BUILD_HEAD=16647354
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=kvm -kernel /tmp/tmp.qGIR5tvTw1 -smp 1 -cpu max # -initrd /tmp/tmp.8JuYRCFRUi
enabling apic
FAIL: RDPRU raises #UD
SUMMARY: 1 tests, 1 unexpected failures
FAIL rdpru (1 tests, 1 unexpected failures) |
|
| 2022-06-14 11:18:53 |
Po-Hsu Lin |
description |
[Impact]
rdpru test in ubuntu_kvm_unit_tests is to check if the RDPRU instruction can be intercepted by the Hypervisor.
RDPRU is one of the new instruction set extensions of AMD "Zen 2" CPUs that is for reading a processor register that is typically limited to privilege level zero. RDPRU allows for reading select registers at any privilege level. With Linux 5.5, the RDPRU presence will be advertised by the CPU features.
Without this patchset, the rdpru test will fail on our AMD Zen 2 system "riccioli"
[Fix]
* 9d40b85b x86/cpufeatures: Add feature bit RDPRU on AMD
* 0cb8410b kvm: svm: Intercept RDPRU
We have these patches in newer releases already, only Bionic 4.15 require this fix. And they can be cherry-picked without any conflict.
[Test]
With the patched kernel, this rdpru test will pass on the target AMD Zen 2 system.
And the rdpru flag will be available in cpuinfo:
flags : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush mmx fxsr sse sse2 ht syscall nx mmxext fxsr_opt pdpe1gb rdtscp lm constant_tsc rep_good nopl xtopology nonstop_tsc cpuid extd_apicid aperfmperf pni pclmulqdq monitor ssse3 fma cx16 pcid sse4_1 sse4_2 x2apic movbe popcnt aes xsave avx f16c rdrand lahf_lm cmp_legacy svm extapic cr8_legacy abm sse4a misalignsse 3dnowprefetch osvw ibs skinit wdt tce topoext perfctr_core perfctr_nb bpext perfctr_llc mwaitx cpb cat_l3 cdp_l3 invpcid_single hw_pstate ssbd ibrs ibpb stibp vmmcall fsgsbase bmi1 avx2 smep bmi2 erms invpcid cqm rdt_a rdseed adx smap clflushopt clwb sha_ni xsaveopt xsavec xgetbv1 xsaves cqm_llc cqm_occup_llc cqm_mbm_total cqm_mbm_local clzero irperf xsaveerptr rdpru arat npt lbrv svm_lock nrip_save tsc_scale vmcb_clean flushbyasid decodeassists pausefilter pfthreshold v_vmsave_vmload vgif umip pku ospke vaes vpclmulqdq rdpid overflow_recov succor smca
bugs : sysret_ss_attrs spectre_v1 spectre_v2 spec_store_bypass
$ sudo ./rdpru
BUILD_HEAD=16647354
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=kvm -kernel /tmp/tmp.syc17ecDpN -smp 1 -cpu max # -initrd /tmp/tmp.poLG53JqrJ
enabling apic
PASS: RDPRU raises #UD
SUMMARY: 1 tests
PASS rdpru (1 tests)
[Where problems could occur]
This patchset will add a new feature bit RDPRU, the impact should be small as it's still up to user-space for making use of it.
[Original Bug Report]
Issue found on B-ibm-gt-4.15.0-1116.127
This can be reproduced with B-4.15.0-175 as well.
This failure is only visible on this node.
Running '/home/ubuntu/autotest/client/tmp/ubuntu_kvm_unit_tests/src/kvm-unit-tests/tests/rdpru'
BUILD_HEAD=16647354
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=kvm -kernel /tmp/tmp.qGIR5tvTw1 -smp 1 -cpu max # -initrd /tmp/tmp.8JuYRCFRUi
enabling apic
FAIL: RDPRU raises #UD
SUMMARY: 1 tests, 1 unexpected failures
FAIL rdpru (1 tests, 1 unexpected failures) |
[Impact]
rdpru test in ubuntu_kvm_unit_tests is to check if the RDPRU instruction can be intercepted by the Hypervisor.
RDPRU is one of the new instruction set extensions of AMD "Zen 2" CPUs that is for reading a processor register that is typically limited to privilege level zero. RDPRU allows for reading select registers at any privilege level. With Linux 5.5, the RDPRU presence will be advertised by the CPU features.
Without this patchset, the rdpru test will fail on our AMD Zen 2 system "riccioli"
[Fix]
* 0cb8410b kvm: svm: Intercept RDPRU
We have this patch in newer releases already, only Bionic 4.15 require this fix. And it can be cherry-picked without any conflict.
[Test]
With the patched kernel, this rdpru test will pass on the target AMD Zen 2 system.
And the rdpru flag will be available in cpuinfo:
flags : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush mmx fxsr sse sse2 ht syscall nx mmxext fxsr_opt pdpe1gb rdtscp lm constant_tsc rep_good nopl xtopology nonstop_tsc cpuid extd_apicid aperfmperf pni pclmulqdq monitor ssse3 fma cx16 pcid sse4_1 sse4_2 x2apic movbe popcnt aes xsave avx f16c rdrand lahf_lm cmp_legacy svm extapic cr8_legacy abm sse4a misalignsse 3dnowprefetch osvw ibs skinit wdt tce topoext perfctr_core perfctr_nb bpext perfctr_llc mwaitx cpb cat_l3 cdp_l3 invpcid_single hw_pstate ssbd ibrs ibpb stibp vmmcall fsgsbase bmi1 avx2 smep bmi2 erms invpcid cqm rdt_a rdseed adx smap clflushopt clwb sha_ni xsaveopt xsavec xgetbv1 xsaves cqm_llc cqm_occup_llc cqm_mbm_total cqm_mbm_local clzero irperf xsaveerptr rdpru arat npt lbrv svm_lock nrip_save tsc_scale vmcb_clean flushbyasid decodeassists pausefilter pfthreshold v_vmsave_vmload vgif umip pku ospke vaes vpclmulqdq rdpid overflow_recov succor smca
bugs : sysret_ss_attrs spectre_v1 spectre_v2 spec_store_bypass
$ sudo ./rdpru
BUILD_HEAD=16647354
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=kvm -kernel /tmp/tmp.syc17ecDpN -smp 1 -cpu max # -initrd /tmp/tmp.poLG53JqrJ
enabling apic
PASS: RDPRU raises #UD
SUMMARY: 1 tests
PASS rdpru (1 tests)
[Where problems could occur]
This patchset will add a new feature bit RDPRU, the impact should be small as it's still up to user-space for making use of it.
[Original Bug Report]
Issue found on B-ibm-gt-4.15.0-1116.127
This can be reproduced with B-4.15.0-175 as well.
This failure is only visible on this node.
Running '/home/ubuntu/autotest/client/tmp/ubuntu_kvm_unit_tests/src/kvm-unit-tests/tests/rdpru'
BUILD_HEAD=16647354
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=kvm -kernel /tmp/tmp.qGIR5tvTw1 -smp 1 -cpu max # -initrd /tmp/tmp.8JuYRCFRUi
enabling apic
FAIL: RDPRU raises #UD
SUMMARY: 1 tests, 1 unexpected failures
FAIL rdpru (1 tests, 1 unexpected failures) |
|
| 2022-10-06 14:19:58 |
Po-Hsu Lin |
tags |
4.15 amd64 bionic sru-20220321 ubuntu-kvm-unit-tests |
4.15 amd64 bionic sru-20220321 sru-20220919 ubuntu-kvm-unit-tests |
|
| 2023-01-16 15:21:41 |
Po-Hsu Lin |
description |
[Impact]
rdpru test in ubuntu_kvm_unit_tests is to check if the RDPRU instruction can be intercepted by the Hypervisor.
RDPRU is one of the new instruction set extensions of AMD "Zen 2" CPUs that is for reading a processor register that is typically limited to privilege level zero. RDPRU allows for reading select registers at any privilege level. With Linux 5.5, the RDPRU presence will be advertised by the CPU features.
Without this patchset, the rdpru test will fail on our AMD Zen 2 system "riccioli"
[Fix]
* 0cb8410b kvm: svm: Intercept RDPRU
We have this patch in newer releases already, only Bionic 4.15 require this fix. And it can be cherry-picked without any conflict.
[Test]
With the patched kernel, this rdpru test will pass on the target AMD Zen 2 system.
And the rdpru flag will be available in cpuinfo:
flags : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush mmx fxsr sse sse2 ht syscall nx mmxext fxsr_opt pdpe1gb rdtscp lm constant_tsc rep_good nopl xtopology nonstop_tsc cpuid extd_apicid aperfmperf pni pclmulqdq monitor ssse3 fma cx16 pcid sse4_1 sse4_2 x2apic movbe popcnt aes xsave avx f16c rdrand lahf_lm cmp_legacy svm extapic cr8_legacy abm sse4a misalignsse 3dnowprefetch osvw ibs skinit wdt tce topoext perfctr_core perfctr_nb bpext perfctr_llc mwaitx cpb cat_l3 cdp_l3 invpcid_single hw_pstate ssbd ibrs ibpb stibp vmmcall fsgsbase bmi1 avx2 smep bmi2 erms invpcid cqm rdt_a rdseed adx smap clflushopt clwb sha_ni xsaveopt xsavec xgetbv1 xsaves cqm_llc cqm_occup_llc cqm_mbm_total cqm_mbm_local clzero irperf xsaveerptr rdpru arat npt lbrv svm_lock nrip_save tsc_scale vmcb_clean flushbyasid decodeassists pausefilter pfthreshold v_vmsave_vmload vgif umip pku ospke vaes vpclmulqdq rdpid overflow_recov succor smca
bugs : sysret_ss_attrs spectre_v1 spectre_v2 spec_store_bypass
$ sudo ./rdpru
BUILD_HEAD=16647354
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=kvm -kernel /tmp/tmp.syc17ecDpN -smp 1 -cpu max # -initrd /tmp/tmp.poLG53JqrJ
enabling apic
PASS: RDPRU raises #UD
SUMMARY: 1 tests
PASS rdpru (1 tests)
[Where problems could occur]
This patchset will add a new feature bit RDPRU, the impact should be small as it's still up to user-space for making use of it.
[Original Bug Report]
Issue found on B-ibm-gt-4.15.0-1116.127
This can be reproduced with B-4.15.0-175 as well.
This failure is only visible on this node.
Running '/home/ubuntu/autotest/client/tmp/ubuntu_kvm_unit_tests/src/kvm-unit-tests/tests/rdpru'
BUILD_HEAD=16647354
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=kvm -kernel /tmp/tmp.qGIR5tvTw1 -smp 1 -cpu max # -initrd /tmp/tmp.8JuYRCFRUi
enabling apic
FAIL: RDPRU raises #UD
SUMMARY: 1 tests, 1 unexpected failures
FAIL rdpru (1 tests, 1 unexpected failures) |
[Impact]
rdpru test in ubuntu_kvm_unit_tests is to check if the RDPRU instruction can be intercepted by the Hypervisor.
RDPRU is one of the new instruction set extensions of AMD "Zen 2" CPUs that is for reading a processor register that is typically limited to privilege level zero. RDPRU allows for reading select registers at any privilege level. With Linux 5.5, the RDPRU presence will be advertised by the CPU features.
Without this patchset, the rdpru test will fail on our AMD Zen 2 system "riccioli"
[Fix]
* fb64f293 x86/cpufeatures: Add feature bit RDPRU on AMD
* 0cb8410b kvm: svm: Intercept RDPRU
We have these patches in newer releases already, only Bionic 4.15 require this fix. And it can be cherry-picked without any conflict.
[Test]
With the patched kernel, this rdpru test will pass on the target AMD Zen 2 system.
And the rdpru flag will be available in cpuinfo:
$ grep rdpru /proc/cpuinfo
flags : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush mmx fxsr sse sse2 ht syscall nx mmxext fxsr_opt pdpe1gb rdtscp lm constant_tsc rep_good nopl xtopology nonstop_tsc cpuid extd_apicid aperfmperf pni pclmulqdq monitor ssse3 fma cx16 pcid sse4_1 sse4_2 x2apic movbe popcnt aes xsave avx f16c rdrand lahf_lm cmp_legacy svm extapic cr8_legacy abm sse4a misalignsse 3dnowprefetch osvw ibs skinit wdt tce topoext perfctr_core perfctr_nb bpext perfctr_llc mwaitx cpb cat_l3 cdp_l3 invpcid_single hw_pstate ssbd ibrs ibpb stibp vmmcall fsgsbase bmi1 avx2 smep bmi2 erms invpcid cqm rdt_a rdseed adx smap clflushopt clwb sha_ni xsaveopt xsavec xgetbv1 xsaves cqm_llc cqm_occup_llc cqm_mbm_total cqm_mbm_local clzero irperf xsaveerptr rdpru arat npt lbrv svm_lock nrip_save tsc_scale vmcb_clean flushbyasid decodeassists pausefilter pfthreshold v_vmsave_vmload vgif umip pku ospke vaes vpclmulqdq rdpid overflow_recov succor smca
$ sudo ./rdpru
BUILD_HEAD=d6421940
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=kvm -kernel /tmp/tmp.XOMVxpyNnl -smp 1 -cpu max # -initrd /tmp/tmp.I2TbGXFiaZ
enabling apic
smp: waiting for 0 APs
PASS: RDPRU raises #UD
SUMMARY: 1 tests
PASS rdpru (1 tests)
[Where problems could occur]
This patchset will add a new feature bit RDPRU for this specific processor, it's still up to user-space for making use of it. But we can expect to see new issues coming up when utilizing this bit in the future.
[Original Bug Report]
Issue found on B-ibm-gt-4.15.0-1116.127
This can be reproduced with B-4.15.0-175 as well.
This failure is only visible on this node.
Running '/home/ubuntu/autotest/client/tmp/ubuntu_kvm_unit_tests/src/kvm-unit-tests/tests/rdpru'
BUILD_HEAD=16647354
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=kvm -kernel /tmp/tmp.qGIR5tvTw1 -smp 1 -cpu max # -initrd /tmp/tmp.8JuYRCFRUi
enabling apic
FAIL: RDPRU raises #UD
SUMMARY: 1 tests, 1 unexpected failures
FAIL rdpru (1 tests, 1 unexpected failures) |
|
| 2023-01-16 15:21:45 |
Po-Hsu Lin |
linux (Ubuntu Bionic): assignee |
|
Po-Hsu Lin (cypressyew) |
|
| 2023-01-16 15:21:47 |
Po-Hsu Lin |
ubuntu-kernel-tests: assignee |
|
Po-Hsu Lin (cypressyew) |
|
| 2023-01-16 15:21:48 |
Po-Hsu Lin |
ubuntu-kernel-tests: status |
New |
In Progress |
|
| 2023-01-16 15:21:50 |
Po-Hsu Lin |
linux (Ubuntu Bionic): status |
Confirmed |
In Progress |
|
| 2023-01-17 04:38:06 |
Po-Hsu Lin |
description |
[Impact]
rdpru test in ubuntu_kvm_unit_tests is to check if the RDPRU instruction can be intercepted by the Hypervisor.
RDPRU is one of the new instruction set extensions of AMD "Zen 2" CPUs that is for reading a processor register that is typically limited to privilege level zero. RDPRU allows for reading select registers at any privilege level. With Linux 5.5, the RDPRU presence will be advertised by the CPU features.
Without this patchset, the rdpru test will fail on our AMD Zen 2 system "riccioli"
[Fix]
* fb64f293 x86/cpufeatures: Add feature bit RDPRU on AMD
* 0cb8410b kvm: svm: Intercept RDPRU
We have these patches in newer releases already, only Bionic 4.15 require this fix. And it can be cherry-picked without any conflict.
[Test]
With the patched kernel, this rdpru test will pass on the target AMD Zen 2 system.
And the rdpru flag will be available in cpuinfo:
$ grep rdpru /proc/cpuinfo
flags : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush mmx fxsr sse sse2 ht syscall nx mmxext fxsr_opt pdpe1gb rdtscp lm constant_tsc rep_good nopl xtopology nonstop_tsc cpuid extd_apicid aperfmperf pni pclmulqdq monitor ssse3 fma cx16 pcid sse4_1 sse4_2 x2apic movbe popcnt aes xsave avx f16c rdrand lahf_lm cmp_legacy svm extapic cr8_legacy abm sse4a misalignsse 3dnowprefetch osvw ibs skinit wdt tce topoext perfctr_core perfctr_nb bpext perfctr_llc mwaitx cpb cat_l3 cdp_l3 invpcid_single hw_pstate ssbd ibrs ibpb stibp vmmcall fsgsbase bmi1 avx2 smep bmi2 erms invpcid cqm rdt_a rdseed adx smap clflushopt clwb sha_ni xsaveopt xsavec xgetbv1 xsaves cqm_llc cqm_occup_llc cqm_mbm_total cqm_mbm_local clzero irperf xsaveerptr rdpru arat npt lbrv svm_lock nrip_save tsc_scale vmcb_clean flushbyasid decodeassists pausefilter pfthreshold v_vmsave_vmload vgif umip pku ospke vaes vpclmulqdq rdpid overflow_recov succor smca
$ sudo ./rdpru
BUILD_HEAD=d6421940
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=kvm -kernel /tmp/tmp.XOMVxpyNnl -smp 1 -cpu max # -initrd /tmp/tmp.I2TbGXFiaZ
enabling apic
smp: waiting for 0 APs
PASS: RDPRU raises #UD
SUMMARY: 1 tests
PASS rdpru (1 tests)
[Where problems could occur]
This patchset will add a new feature bit RDPRU for this specific processor, it's still up to user-space for making use of it. But we can expect to see new issues coming up when utilizing this bit in the future.
[Original Bug Report]
Issue found on B-ibm-gt-4.15.0-1116.127
This can be reproduced with B-4.15.0-175 as well.
This failure is only visible on this node.
Running '/home/ubuntu/autotest/client/tmp/ubuntu_kvm_unit_tests/src/kvm-unit-tests/tests/rdpru'
BUILD_HEAD=16647354
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=kvm -kernel /tmp/tmp.qGIR5tvTw1 -smp 1 -cpu max # -initrd /tmp/tmp.8JuYRCFRUi
enabling apic
FAIL: RDPRU raises #UD
SUMMARY: 1 tests, 1 unexpected failures
FAIL rdpru (1 tests, 1 unexpected failures) |
[Impact]
RDPRU, the Read Processor Register instruction of AMD Zen 2 processors
is used to give access to some processor registers that are typically
only accessible when the privilege level is zero.
rdpru test in ubuntu_kvm_unit_tests is to check if the RDPRU instruction
can be intercepted by the Hypervisor. Without this patchset, this test
will fail on our AMD Zen 2 system "riccioli" with:
FAIL: RDPRU raises #UD
[Fix]
* fb64f293 x86/cpufeatures: Add feature bit RDPRU on AMD
* 0cb8410b kvm: svm: Intercept RDPRU
We have these patches in newer releases already, only Bionic 4.15
requires this fix. The first patch needs to be backported with some
context adjustment, the second can be cherry-picked.
[Test]
Test kernel can be found here:
https://people.canonical.com/~phlin/kernel/lp-1968681-rdpru/
With the patched kernel, this rdpru test will pass on the target AMD
Zen 2 system.
$ sudo ./rdpru
BUILD_HEAD=d6421940
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=kvm -kernel /tmp/tmp.XOMVxpyNnl -smp 1 -cpu max # -initrd /tmp/tmp.I2TbGXFiaZ
enabling apic
smp: waiting for 0 APs
PASS: RDPRU raises #UD
SUMMARY: 1 tests
PASS rdpru (1 tests)
And the rdpru flag will be available in cpuinfo:
$ grep -o rdpru /proc/cpuinfo
rdpru
[Where problems could occur]
This patchset will add a new feature bit RDPRU for AMD Zen 2. We can
expect to see new issues coming up when using this bit in the future.
[Original Bug Report]
Issue found on B-ibm-gt-4.15.0-1116.127
This can be reproduced with B-4.15.0-175 as well.
This failure is only visible on this node.
Running '/home/ubuntu/autotest/client/tmp/ubuntu_kvm_unit_tests/src/kvm-unit-tests/tests/rdpru'
BUILD_HEAD=16647354
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=kvm -kernel /tmp/tmp.qGIR5tvTw1 -smp 1 -cpu max # -initrd /tmp/tmp.8JuYRCFRUi
enabling apic
FAIL: RDPRU raises #UD
SUMMARY: 1 tests, 1 unexpected failures
FAIL rdpru (1 tests, 1 unexpected failures) |
|
| 2023-01-17 05:35:07 |
Po-Hsu Lin |
description |
[Impact]
RDPRU, the Read Processor Register instruction of AMD Zen 2 processors
is used to give access to some processor registers that are typically
only accessible when the privilege level is zero.
rdpru test in ubuntu_kvm_unit_tests is to check if the RDPRU instruction
can be intercepted by the Hypervisor. Without this patchset, this test
will fail on our AMD Zen 2 system "riccioli" with:
FAIL: RDPRU raises #UD
[Fix]
* fb64f293 x86/cpufeatures: Add feature bit RDPRU on AMD
* 0cb8410b kvm: svm: Intercept RDPRU
We have these patches in newer releases already, only Bionic 4.15
requires this fix. The first patch needs to be backported with some
context adjustment, the second can be cherry-picked.
[Test]
Test kernel can be found here:
https://people.canonical.com/~phlin/kernel/lp-1968681-rdpru/
With the patched kernel, this rdpru test will pass on the target AMD
Zen 2 system.
$ sudo ./rdpru
BUILD_HEAD=d6421940
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=kvm -kernel /tmp/tmp.XOMVxpyNnl -smp 1 -cpu max # -initrd /tmp/tmp.I2TbGXFiaZ
enabling apic
smp: waiting for 0 APs
PASS: RDPRU raises #UD
SUMMARY: 1 tests
PASS rdpru (1 tests)
And the rdpru flag will be available in cpuinfo:
$ grep -o rdpru /proc/cpuinfo
rdpru
[Where problems could occur]
This patchset will add a new feature bit RDPRU for AMD Zen 2. We can
expect to see new issues coming up when using this bit in the future.
[Original Bug Report]
Issue found on B-ibm-gt-4.15.0-1116.127
This can be reproduced with B-4.15.0-175 as well.
This failure is only visible on this node.
Running '/home/ubuntu/autotest/client/tmp/ubuntu_kvm_unit_tests/src/kvm-unit-tests/tests/rdpru'
BUILD_HEAD=16647354
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=kvm -kernel /tmp/tmp.qGIR5tvTw1 -smp 1 -cpu max # -initrd /tmp/tmp.8JuYRCFRUi
enabling apic
FAIL: RDPRU raises #UD
SUMMARY: 1 tests, 1 unexpected failures
FAIL rdpru (1 tests, 1 unexpected failures) |
[Impact]
RDPRU, the Read Processor Register instruction of AMD Zen 2 processors
is used to give access to some processor registers that are typically
only accessible when the privilege level is zero.
rdpru test in ubuntu_kvm_unit_tests is to check if the RDPRU instruction
can be intercepted by the Hypervisor. Without this patchset, this test
will fail on our AMD Zen 2 system "riccioli" with:
FAIL: RDPRU raises #UD
[Fix]
* fb64f293 x86/cpufeatures: Add feature bit RDPRU on AMD
* 0cb8410b kvm: svm: Intercept RDPRU
We have these patches in newer releases already, only Bionic 4.15
requires this fix. The first patch needs to be backported with some
context adjustment, the second can be cherry-picked.
[Test]
Test kernel can be found here:
https://people.canonical.com/~phlin/kernel/lp-1968681-rdpru/
With the patched kernel, this rdpru test will pass on the target AMD
Zen 2 system.
$ sudo ./rdpru
BUILD_HEAD=d6421940
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=kvm -kernel \
/tmp/tmp.XOMVxpyNnl -smp 1 -cpu max # -initrd /tmp/tmp.I2TbGXFiaZ
enabling apic
smp: waiting for 0 APs
PASS: RDPRU raises #UD
SUMMARY: 1 tests
PASS rdpru (1 tests)
And the rdpru flag will be available in cpuinfo:
$ grep -o rdpru /proc/cpuinfo
rdpru
[Where problems could occur]
This patchset will add a new feature bit RDPRU for AMD Zen 2. We can
expect to see new issues coming up when using this bit in the future.
[Original Bug Report]
Issue found on B-ibm-gt-4.15.0-1116.127
This can be reproduced with B-4.15.0-175 as well.
This failure is only visible on this node.
Running '/home/ubuntu/autotest/client/tmp/ubuntu_kvm_unit_tests/src/kvm-unit-tests/tests/rdpru'
BUILD_HEAD=16647354
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=kvm -kernel /tmp/tmp.qGIR5tvTw1 -smp 1 -cpu max # -initrd /tmp/tmp.8JuYRCFRUi
enabling apic
FAIL: RDPRU raises #UD
SUMMARY: 1 tests, 1 unexpected failures
FAIL rdpru (1 tests, 1 unexpected failures) |
|
| 2023-01-31 17:07:11 |
Luke Nowakowski-Krijger |
linux (Ubuntu Bionic): status |
In Progress |
Fix Committed |
|
| 2023-02-09 22:38:02 |
Ubuntu Kernel Bot |
tags |
4.15 amd64 bionic sru-20220321 sru-20220919 ubuntu-kvm-unit-tests |
4.15 amd64 bionic kernel-spammed-bionic-linux sru-20220321 sru-20220919 ubuntu-kvm-unit-tests verification-needed-bionic |
|
| 2023-02-21 11:08:39 |
Po-Hsu Lin |
tags |
4.15 amd64 bionic kernel-spammed-bionic-linux sru-20220321 sru-20220919 ubuntu-kvm-unit-tests verification-needed-bionic |
4.15 amd64 bionic kernel-spammed-bionic-linux sru-20220321 sru-20220919 ubuntu-kvm-unit-tests verification-done-bionic |
|
| 2023-03-02 10:44:19 |
Launchpad Janitor |
linux (Ubuntu Bionic): status |
Fix Committed |
Fix Released |
|
| 2023-03-02 10:44:19 |
Launchpad Janitor |
cve linked |
|
2022-3545 |
|
| 2023-03-02 10:44:19 |
Launchpad Janitor |
cve linked |
|
2022-3628 |
|
| 2023-03-02 10:44:19 |
Launchpad Janitor |
cve linked |
|
2023-0461 |
|
| 2023-05-17 06:07:44 |
Po-Hsu Lin |
ubuntu-kernel-tests: status |
In Progress |
Fix Released |
|
