August 2023 - Linux-stable-mirror

stable/linux-6.1.y baseline: 123 runs, 12 regressions (v6.1.48)

by kernelci.org bot

stable/linux-6.1.y baseline: 123 runs, 12 regressions (v6.1.48) Regressions Summary ------------------- platform | arch | lab | compiler | defconfig | regressions -----------------------------+--------+---------------+----------+------------------------------+------------ asus-C436FA-Flip-hatch | x86_64 | lab-collabora | gcc-10 | x86_64_defcon...6-chromebook | 1 asus-CM1400CXA-dalboz | x86_64 | lab-collabora | gcc-10 | x86_64_defcon...6-chromebook | 1 asus-cx9400-volteer | x86_64 | lab-collabora | gcc-10 | x86_64_defcon...6-chromebook | 1 beagle-xm | arm | lab-baylibre | gcc-10 | omap2plus_defconfig | 1 hp-x360-12b-c...4020-octopus | x86_64 | lab-collabora | gcc-10 | x86_64_defcon...6-chromebook | 1 hp-x360-14-G1-sona | x86_64 | lab-collabora | gcc-10 | x86_64_defcon...6-chromebook | 1 hp-x360-14a-cb0001xx-zork | x86_64 | lab-collabora | gcc-10 | x86_64_defcon...6-chromebook | 1 lenovo-TPad-C13-Yoga-zork | x86_64 | lab-collabora | gcc-10 | x86_64_defcon...6-chromebook | 1 mt8183-kukui-...uniper-sku16 | arm64 | lab-collabora | gcc-10 | defconfig+arm64-chromebook | 1 r8a77960-ulcb | arm64 | lab-collabora | gcc-10 | defconfig | 1 r8a779m1-ulcb | arm64 | lab-collabora | gcc-10 | defconfig | 1 sun50i-h6-pine-h64 | arm64 | lab-collabora | gcc-10 | defconfig | 1 Details: https://kernelci.org/test/job/stable/branch/linux-6.1.y/kernel/v6.1.48/plan… Test: baseline Tree: stable Branch: linux-6.1.y Describe: v6.1.48 URL: https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux-stable.git SHA: cd363bb9548ec3208120bb3f55ff4ded2487d7fb Test Regressions ---------------- platform | arch | lab | compiler | defconfig | regressions -----------------------------+--------+---------------+----------+------------------------------+------------ asus-C436FA-Flip-hatch | x86_64 | lab-collabora | gcc-10 | x86_64_defcon...6-chromebook | 1 Details: https://kernelci.org/test/plan/id/64e9f7670761249510286d7b Results: 6 PASS, 1 FAIL, 0 SKIP Full config: x86_64_defconfig+x86-chromebook Compiler: gcc-10 (gcc (Debian 10.2.1-6) 10.2.1 20210110) Plain log: https://storage.kernelci.org//stable/linux-6.1.y/v6.1.48/x86_64/x86_64_defc… HTML log: https://storage.kernelci.org//stable/linux-6.1.y/v6.1.48/x86_64/x86_64_defc… Rootfs: http://storage.kernelci.org/images/rootfs/buildroot/buildroot-baseline/2023… * baseline.bootrr.deferred-probe-empty: https://kernelci.org/test/case/id/64e9f7670761249510286d80 failing since 148 days (last pass: v6.1.21, first fail: v6.1.22) 2023-08-26T13:00:19.065891 <8>[ 10.277490] <LAVA_SIGNAL_ENDRUN 0_dmesg 11361998_1.4.2.3.1> 2023-08-26T13:00:19.069156 + set +x 2023-08-26T13:00:19.173959 / # # 2023-08-26T13:00:19.274527 export SHELL=/bin/sh 2023-08-26T13:00:19.274718 # 2023-08-26T13:00:19.375305 / # export SHELL=/bin/sh. /lava-11361998/environment 2023-08-26T13:00:19.375492 2023-08-26T13:00:19.475989 / # . /lava-11361998/environment/lava-11361998/bin/lava-test-runner /lava-11361998/1 2023-08-26T13:00:19.476315 2023-08-26T13:00:19.482914 / # /lava-11361998/bin/lava-test-runner /lava-11361998/1 ... (12 line(s) more) platform | arch | lab | compiler | defconfig | regressions -----------------------------+--------+---------------+----------+------------------------------+------------ asus-CM1400CXA-dalboz | x86_64 | lab-collabora | gcc-10 | x86_64_defcon...6-chromebook | 1 Details: https://kernelci.org/test/plan/id/64e9f769e1ad1cdee0286da1 Results: 6 PASS, 1 FAIL, 0 SKIP Full config: x86_64_defconfig+x86-chromebook Compiler: gcc-10 (gcc (Debian 10.2.1-6) 10.2.1 20210110) Plain log: https://storage.kernelci.org//stable/linux-6.1.y/v6.1.48/x86_64/x86_64_defc… HTML log: https://storage.kernelci.org//stable/linux-6.1.y/v6.1.48/x86_64/x86_64_defc… Rootfs: http://storage.kernelci.org/images/rootfs/buildroot/buildroot-baseline/2023… * baseline.bootrr.deferred-probe-empty: https://kernelci.org/test/case/id/64e9f769e1ad1cdee0286da6 failing since 148 days (last pass: v6.1.21, first fail: v6.1.22) 2023-08-26T13:00:20.162641 + <8>[ 12.209849] <LAVA_SIGNAL_ENDRUN 0_dmesg 11362003_1.4.2.3.1> 2023-08-26T13:00:20.163191 set +x 2023-08-26T13:00:20.271255 / # # 2023-08-26T13:00:20.373782 export SHELL=/bin/sh 2023-08-26T13:00:20.374615 # 2023-08-26T13:00:20.476214 / # export SHELL=/bin/sh. /lava-11362003/environment 2023-08-26T13:00:20.477026 2023-08-26T13:00:20.578836 / # . /lava-11362003/environment/lava-11362003/bin/lava-test-runner /lava-11362003/1 2023-08-26T13:00:20.580080 2023-08-26T13:00:20.584936 / # /lava-11362003/bin/lava-test-runner /lava-11362003/1 ... (12 line(s) more) platform | arch | lab | compiler | defconfig | regressions -----------------------------+--------+---------------+----------+------------------------------+------------ asus-cx9400-volteer | x86_64 | lab-collabora | gcc-10 | x86_64_defcon...6-chromebook | 1 Details: https://kernelci.org/test/plan/id/64e9f774dd450903e0286dfe Results: 6 PASS, 1 FAIL, 0 SKIP Full config: x86_64_defconfig+x86-chromebook Compiler: gcc-10 (gcc (Debian 10.2.1-6) 10.2.1 20210110) Plain log: https://storage.kernelci.org//stable/linux-6.1.y/v6.1.48/x86_64/x86_64_defc… HTML log: https://storage.kernelci.org//stable/linux-6.1.y/v6.1.48/x86_64/x86_64_defc… Rootfs: http://storage.kernelci.org/images/rootfs/buildroot/buildroot-baseline/2023… * baseline.bootrr.deferred-probe-empty: https://kernelci.org/test/case/id/64e9f774dd450903e0286e03 failing since 148 days (last pass: v6.1.21, first fail: v6.1.22) 2023-08-26T13:00:21.140002 <8>[ 10.473947] <LAVA_SIGNAL_ENDRUN 0_dmesg 11362009_1.4.2.3.1> 2023-08-26T13:00:21.143315 + set +x 2023-08-26T13:00:21.249357 2023-08-26T13:00:21.351343 / # #export SHELL=/bin/sh 2023-08-26T13:00:21.352228 2023-08-26T13:00:21.454033 / # export SHELL=/bin/sh. /lava-11362009/environment 2023-08-26T13:00:21.454863 2023-08-26T13:00:21.556941 / # . /lava-11362009/environment/lava-11362009/bin/lava-test-runner /lava-11362009/1 2023-08-26T13:00:21.558335 2023-08-26T13:00:21.563848 / # /lava-11362009/bin/lava-test-runner /lava-11362009/1 ... (12 line(s) more) platform | arch | lab | compiler | defconfig | regressions -----------------------------+--------+---------------+----------+------------------------------+------------ beagle-xm | arm | lab-baylibre | gcc-10 | omap2plus_defconfig | 1 Details: https://kernelci.org/test/plan/id/64e9fbdc06dc62a1b2286d8b Results: 0 PASS, 1 FAIL, 0 SKIP Full config: omap2plus_defconfig Compiler: gcc-10 (arm-linux-gnueabihf-gcc (Debian 10.2.1-6) 10.2.1 20210110) Plain log: https://storage.kernelci.org//stable/linux-6.1.y/v6.1.48/arm/omap2plus_defc… HTML log: https://storage.kernelci.org//stable/linux-6.1.y/v6.1.48/arm/omap2plus_defc… Rootfs: http://storage.kernelci.org/images/rootfs/buildroot/buildroot-baseline/2023… * baseline.login: https://kernelci.org/test/case/id/64e9fbdc06dc62a1b2286d8c failing since 2 days (last pass: v6.1.46, first fail: v6.1.47) platform | arch | lab | compiler | defconfig | regressions -----------------------------+--------+---------------+----------+------------------------------+------------ hp-x360-12b-c...4020-octopus | x86_64 | lab-collabora | gcc-10 | x86_64_defcon...6-chromebook | 1 Details: https://kernelci.org/test/plan/id/64e9f75f210deabfbf286eb5 Results: 6 PASS, 1 FAIL, 0 SKIP Full config: x86_64_defconfig+x86-chromebook Compiler: gcc-10 (gcc (Debian 10.2.1-6) 10.2.1 20210110) Plain log: https://storage.kernelci.org//stable/linux-6.1.y/v6.1.48/x86_64/x86_64_defc… HTML log: https://storage.kernelci.org//stable/linux-6.1.y/v6.1.48/x86_64/x86_64_defc… Rootfs: http://storage.kernelci.org/images/rootfs/buildroot/buildroot-baseline/2023… * baseline.bootrr.deferred-probe-empty: https://kernelci.org/test/case/id/64e9f75f210deabfbf286eba failing since 148 days (last pass: v6.1.21, first fail: v6.1.22) 2023-08-26T13:00:06.180816 + set +x 2023-08-26T13:00:06.187128 <8>[ 10.349706] <LAVA_SIGNAL_ENDRUN 0_dmesg 11362030_1.4.2.3.1> 2023-08-26T13:00:06.291902 / # # 2023-08-26T13:00:06.392529 export SHELL=/bin/sh 2023-08-26T13:00:06.392738 # 2023-08-26T13:00:06.493281 / # export SHELL=/bin/sh. /lava-11362030/environment 2023-08-26T13:00:06.493461 2023-08-26T13:00:06.594007 / # . /lava-11362030/environment/lava-11362030/bin/lava-test-runner /lava-11362030/1 2023-08-26T13:00:06.594265 2023-08-26T13:00:06.598579 / # /lava-11362030/bin/lava-test-runner /lava-11362030/1 ... (11 line(s) more) platform | arch | lab | compiler | defconfig | regressions -----------------------------+--------+---------------+----------+------------------------------+------------ hp-x360-14-G1-sona | x86_64 | lab-collabora | gcc-10 | x86_64_defcon...6-chromebook | 1 Details: https://kernelci.org/test/plan/id/64e9f74e43df21ac1e286d70 Results: 6 PASS, 1 FAIL, 0 SKIP Full config: x86_64_defconfig+x86-chromebook Compiler: gcc-10 (gcc (Debian 10.2.1-6) 10.2.1 20210110) Plain log: https://storage.kernelci.org//stable/linux-6.1.y/v6.1.48/x86_64/x86_64_defc… HTML log: https://storage.kernelci.org//stable/linux-6.1.y/v6.1.48/x86_64/x86_64_defc… Rootfs: http://storage.kernelci.org/images/rootfs/buildroot/buildroot-baseline/2023… * baseline.bootrr.deferred-probe-empty: https://kernelci.org/test/case/id/64e9f74e43df21ac1e286d75 failing since 148 days (last pass: v6.1.21, first fail: v6.1.22) 2023-08-26T12:59:45.142086 <8>[ 10.965280] <LAVA_SIGNAL_ENDRUN 0_dmesg 11362021_1.4.2.3.1> 2023-08-26T12:59:45.145663 + set +x 2023-08-26T12:59:45.250796 # 2023-08-26T12:59:45.251893 2023-08-26T12:59:45.353662 / # #export SHELL=/bin/sh 2023-08-26T12:59:45.354407 2023-08-26T12:59:45.455856 / # export SHELL=/bin/sh. /lava-11362021/environment 2023-08-26T12:59:45.456614 2023-08-26T12:59:45.558037 / # . /lava-11362021/environment/lava-11362021/bin/lava-test-runner /lava-11362021/1 2023-08-26T12:59:45.559219 ... (13 line(s) more) platform | arch | lab | compiler | defconfig | regressions -----------------------------+--------+---------------+----------+------------------------------+------------ hp-x360-14a-cb0001xx-zork | x86_64 | lab-collabora | gcc-10 | x86_64_defcon...6-chromebook | 1 Details: https://kernelci.org/test/plan/id/64e9f76eb3409b313a286dac Results: 6 PASS, 1 FAIL, 0 SKIP Full config: x86_64_defconfig+x86-chromebook Compiler: gcc-10 (gcc (Debian 10.2.1-6) 10.2.1 20210110) Plain log: https://storage.kernelci.org//stable/linux-6.1.y/v6.1.48/x86_64/x86_64_defc… HTML log: https://storage.kernelci.org//stable/linux-6.1.y/v6.1.48/x86_64/x86_64_defc… Rootfs: http://storage.kernelci.org/images/rootfs/buildroot/buildroot-baseline/2023… * baseline.bootrr.deferred-probe-empty: https://kernelci.org/test/case/id/64e9f76eb3409b313a286db1 failing since 148 days (last pass: v6.1.21, first fail: v6.1.22) 2023-08-26T13:00:12.769000 + <8>[ 11.898051] <LAVA_SIGNAL_ENDRUN 0_dmesg 11362027_1.4.2.3.1> 2023-08-26T13:00:12.769453 set +x 2023-08-26T13:00:12.877749 / # # 2023-08-26T13:00:12.978932 export SHELL=/bin/sh 2023-08-26T13:00:12.979787 # 2023-08-26T13:00:13.081505 / # export SHELL=/bin/sh. /lava-11362027/environment 2023-08-26T13:00:13.082560 2023-08-26T13:00:13.184904 / # . /lava-11362027/environment/lava-11362027/bin/lava-test-runner /lava-11362027/1 2023-08-26T13:00:13.186226 2023-08-26T13:00:13.191087 / # /lava-11362027/bin/lava-test-runner /lava-11362027/1 ... (12 line(s) more) platform | arch | lab | compiler | defconfig | regressions -----------------------------+--------+---------------+----------+------------------------------+------------ lenovo-TPad-C13-Yoga-zork | x86_64 | lab-collabora | gcc-10 | x86_64_defcon...6-chromebook | 1 Details: https://kernelci.org/test/plan/id/64e9f752c8acc694fe286d7e Results: 6 PASS, 1 FAIL, 0 SKIP Full config: x86_64_defconfig+x86-chromebook Compiler: gcc-10 (gcc (Debian 10.2.1-6) 10.2.1 20210110) Plain log: https://storage.kernelci.org//stable/linux-6.1.y/v6.1.48/x86_64/x86_64_defc… HTML log: https://storage.kernelci.org//stable/linux-6.1.y/v6.1.48/x86_64/x86_64_defc… Rootfs: http://storage.kernelci.org/images/rootfs/buildroot/buildroot-baseline/2023… * baseline.bootrr.deferred-probe-empty: https://kernelci.org/test/case/id/64e9f752c8acc694fe286d83 failing since 148 days (last pass: v6.1.21, first fail: v6.1.22) 2023-08-26T13:00:03.765462 <8>[ 11.184251] <LAVA_SIGNAL_ENDRUN 0_dmesg 11362014_1.4.2.3.1> 2023-08-26T13:00:03.869853 / # # 2023-08-26T13:00:03.970502 export SHELL=/bin/sh 2023-08-26T13:00:03.970689 # 2023-08-26T13:00:04.071235 / # export SHELL=/bin/sh. /lava-11362014/environment 2023-08-26T13:00:04.071409 2023-08-26T13:00:04.172032 / # . /lava-11362014/environment/lava-11362014/bin/lava-test-runner /lava-11362014/1 2023-08-26T13:00:04.172310 2023-08-26T13:00:04.176970 / # /lava-11362014/bin/lava-test-runner /lava-11362014/1 2023-08-26T13:00:04.183444 + export 'TESTRUN_ID=1_bootrr' ... (11 line(s) more) platform | arch | lab | compiler | defconfig | regressions -----------------------------+--------+---------------+----------+------------------------------+------------ mt8183-kukui-...uniper-sku16 | arm64 | lab-collabora | gcc-10 | defconfig+arm64-chromebook | 1 Details: https://kernelci.org/test/plan/id/64e9f9f65a10247d19286db3 Results: 0 PASS, 1 FAIL, 0 SKIP Full config: defconfig+arm64-chromebook Compiler: gcc-10 (aarch64-linux-gnu-gcc (Debian 10.2.1-6) 10.2.1 20210110) Plain log: https://storage.kernelci.org//stable/linux-6.1.y/v6.1.48/arm64/defconfig+ar… HTML log: https://storage.kernelci.org//stable/linux-6.1.y/v6.1.48/arm64/defconfig+ar… Rootfs: http://storage.kernelci.org/images/rootfs/buildroot/buildroot-baseline/2023… * baseline.login: https://kernelci.org/test/case/id/64e9f9f65a10247d19286db4 new failure (last pass: v6.1.47) platform | arch | lab | compiler | defconfig | regressions -----------------------------+--------+---------------+----------+------------------------------+------------ r8a77960-ulcb | arm64 | lab-collabora | gcc-10 | defconfig | 1 Details: https://kernelci.org/test/plan/id/64e9f83b42edcc2ce2286d92 Results: 4 PASS, 2 FAIL, 1 SKIP Full config: defconfig Compiler: gcc-10 (aarch64-linux-gnu-gcc (Debian 10.2.1-6) 10.2.1 20210110) Plain log: https://storage.kernelci.org//stable/linux-6.1.y/v6.1.48/arm64/defconfig/gc… HTML log: https://storage.kernelci.org//stable/linux-6.1.y/v6.1.48/arm64/defconfig/gc… Rootfs: http://storage.kernelci.org/images/rootfs/buildroot/buildroot-baseline/2023… * baseline.bootrr.deferred-probe-empty: https://kernelci.org/test/case/id/64e9f83b42edcc2ce2286d97 failing since 37 days (last pass: v6.1.38, first fail: v6.1.39) 2023-08-26T13:05:14.233066 / # # 2023-08-26T13:05:14.335083 export SHELL=/bin/sh 2023-08-26T13:05:14.335809 # 2023-08-26T13:05:14.437239 / # export SHELL=/bin/sh. /lava-11362057/environment 2023-08-26T13:05:14.437973 2023-08-26T13:05:14.539408 / # . /lava-11362057/environment/lava-11362057/bin/lava-test-runner /lava-11362057/1 2023-08-26T13:05:14.540509 2023-08-26T13:05:14.557403 / # /lava-11362057/bin/lava-test-runner /lava-11362057/1 2023-08-26T13:05:14.605411 + export 'TESTRUN_ID=1_bootrr' 2023-08-26T13:05:14.605899 + cd /lav<8>[ 19.084139] <LAVA_SIGNAL_STARTRUN 1_bootrr 11362057_1.5.2.4.5> ... (28 line(s) more) platform | arch | lab | compiler | defconfig | regressions -----------------------------+--------+---------------+----------+------------------------------+------------ r8a779m1-ulcb | arm64 | lab-collabora | gcc-10 | defconfig | 1 Details: https://kernelci.org/test/plan/id/64e9f85c97190f0f68286dfc Results: 5 PASS, 1 FAIL, 1 SKIP Full config: defconfig Compiler: gcc-10 (aarch64-linux-gnu-gcc (Debian 10.2.1-6) 10.2.1 20210110) Plain log: https://storage.kernelci.org//stable/linux-6.1.y/v6.1.48/arm64/defconfig/gc… HTML log: https://storage.kernelci.org//stable/linux-6.1.y/v6.1.48/arm64/defconfig/gc… Rootfs: http://storage.kernelci.org/images/rootfs/buildroot/buildroot-baseline/2023… * baseline.bootrr.deferred-probe-empty: https://kernelci.org/test/case/id/64e9f85c97190f0f68286e01 failing since 37 days (last pass: v6.1.38, first fail: v6.1.39) 2023-08-26T13:04:16.469088 / # # 2023-08-26T13:04:17.546464 export SHELL=/bin/sh 2023-08-26T13:04:17.548168 # 2023-08-26T13:04:19.037693 / # export SHELL=/bin/sh. /lava-11362055/environment 2023-08-26T13:04:19.039504 2023-08-26T13:04:21.755966 / # . /lava-11362055/environment/lava-11362055/bin/lava-test-runner /lava-11362055/1 2023-08-26T13:04:21.757384 2023-08-26T13:04:21.767602 / # /lava-11362055/bin/lava-test-runner /lava-11362055/1 2023-08-26T13:04:21.826649 + export 'TESTRUN_ID=1_bootrr' 2023-08-26T13:04:21.826727 + cd /lav<8>[ 28.462033] <LAVA_SIGNAL_STARTRUN 1_bootrr 11362055_1.5.2.4.5> ... (38 line(s) more) platform | arch | lab | compiler | defconfig | regressions -----------------------------+--------+---------------+----------+------------------------------+------------ sun50i-h6-pine-h64 | arm64 | lab-collabora | gcc-10 | defconfig | 1 Details: https://kernelci.org/test/plan/id/64e9f83c5d2230879b286db7 Results: 5 PASS, 1 FAIL, 1 SKIP Full config: defconfig Compiler: gcc-10 (aarch64-linux-gnu-gcc (Debian 10.2.1-6) 10.2.1 20210110) Plain log: https://storage.kernelci.org//stable/linux-6.1.y/v6.1.48/arm64/defconfig/gc… HTML log: https://storage.kernelci.org//stable/linux-6.1.y/v6.1.48/arm64/defconfig/gc… Rootfs: http://storage.kernelci.org/images/rootfs/buildroot/buildroot-baseline/2023… * baseline.bootrr.deferred-probe-empty: https://kernelci.org/test/case/id/64e9f83c5d2230879b286dbc failing since 37 days (last pass: v6.1.38, first fail: v6.1.39) 2023-08-26T13:05:25.756627 / # # 2023-08-26T13:05:25.858786 export SHELL=/bin/sh 2023-08-26T13:05:25.859492 # 2023-08-26T13:05:25.960589 / # export SHELL=/bin/sh. /lava-11362061/environment 2023-08-26T13:05:25.960799 2023-08-26T13:05:26.061238 / # . /lava-11362061/environment/lava-11362061/bin/lava-test-runner /lava-11362061/1 2023-08-26T13:05:26.061449 2023-08-26T13:05:26.064170 / # /lava-11362061/bin/lava-test-runner /lava-11362061/1 2023-08-26T13:05:26.144526 + export 'TESTRUN_ID=1_bootrr' 2023-08-26T13:05:26.144818 + cd /lava-11362061/1/tests/1_boot<8>[ 16.969614] <LAVA_SIGNAL_STARTRUN 1_bootrr 11362061_1.5.2.4.5> ... (11 line(s) more)

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[PATCH 6.1] KVM: x86: Preserve TDP MMU roots until they are explicitly invalidated

by Sean Christopherson

Upstream commit edbdb43fc96b11b3bfa531be306a1993d9fe89ec. Preserve TDP MMU roots until they are explicitly invalidated by gifting the TDP MMU itself a reference to a root when it is allocated. Keeping a reference in the TDP MMU fixes a flaw where the TDP MMU exhibits terrible performance, and can potentially even soft-hang a vCPU, if a vCPU frequently unloads its roots, e.g. when KVM is emulating SMI+RSM. When KVM emulates something that invalidates _all_ TLB entries, e.g. SMI and RSM, KVM unloads all of the vCPUs roots (KVM keeps a small per-vCPU cache of previous roots). Unloading roots is a simple way to ensure KVM flushes and synchronizes all roots for the vCPU, as KVM flushes and syncs when allocating a "new" root (from the vCPU's perspective). In the shadow MMU, KVM keeps track of all shadow pages, roots included, in a per-VM hash table. Unloading a shadow MMU root just wipes it from the per-vCPU cache; the root is still tracked in the per-VM hash table. When KVM loads a "new" root for the vCPU, KVM will find the old, unloaded root in the per-VM hash table. Unlike the shadow MMU, the TDP MMU doesn't track "inactive" roots in a per-VM structure, where "active" in this case means a root is either in-use or cached as a previous root by at least one vCPU. When a TDP MMU root becomes inactive, i.e. the last vCPU reference to the root is put, KVM immediately frees the root (asterisk on "immediately" as the actual freeing may be done by a worker, but for all intents and purposes the root is gone). The TDP MMU behavior is especially problematic for 1-vCPU setups, as unloading all roots effectively frees all roots. The issue is mitigated to some degree in multi-vCPU setups as a different vCPU usually holds a reference to an unloaded root and thus keeps the root alive, allowing the vCPU to reuse its old root after unloading (with a flush+sync). The TDP MMU flaw has been known for some time, as until very recently, KVM's handling of CR0.WP also triggered unloading of all roots. The CR0.WP toggling scenario was eventually addressed by not unloading roots when _only_ CR0.WP is toggled, but such an approach doesn't Just Work for emulating SMM as KVM must emulate a full TLB flush on entry and exit to/from SMM. Given that the shadow MMU plays nice with unloading roots at will, teaching the TDP MMU to do the same is far less complex than modifying KVM to track which roots need to be flushed before reuse. Note, preserving all possible TDP MMU roots is not a concern with respect to memory consumption. Now that the role for direct MMUs doesn't include information about the guest, e.g. CR0.PG, CR0.WP, CR4.SMEP, etc., there are _at most_ six possible roots (where "guest_mode" here means L2): 1. 4-level !SMM !guest_mode 2. 4-level SMM !guest_mode 3. 5-level !SMM !guest_mode 4. 5-level SMM !guest_mode 5. 4-level !SMM guest_mode 6. 5-level !SMM guest_mode And because each vCPU can track 4 valid roots, a VM can already have all 6 root combinations live at any given time. Not to mention that, in practice, no sane VMM will advertise different guest.MAXPHYADDR values across vCPUs, i.e. KVM won't ever use both 4-level and 5-level roots for a single VM. Furthermore, the vast majority of modern hypervisors will utilize EPT/NPT when available, thus the guest_mode=%true cases are also unlikely to be utilized. [6.1 backport notes: conflicts with 09732d2b4dc5 ("KVM: x86/mmu: Move TDP MMU VM init/uninit behind tdp_mmu_enabled") 1f98f2bd8ec4 ("KVM: x86/mmu: Change tdp_mmu to a read-only parameter") de0322f575be ("KVM: x86/mmu: Replace open coded usage of tdp_mmu_page with is_tdp_mmu_page()") prevented a clean cherry-pick. First two resolved by keeping 6.1's check on kvm->arch.tdp_mmu_enabled, last one resolved by taking the upstream change, i.e. by opportunistically switching to is_tdp_mmu_page()] Reported-by: Jeremi Piotrowski <jpiotrowski(a)linux.microsoft.com> Link: https://lore.kernel.org/all/959c5bce-beb5-b463-7158-33fc4a4f910c@linux.micr… Link: https://lkml.kernel.org/r/20220209170020.1775368-1-pbonzini%40redhat.com Link: https://lore.kernel.org/all/20230322013731.102955-1-minipli@grsecurity.net Link: https://lore.kernel.org/all/000000000000a0bc2b05f9dd7fab@google.com Link: https://lore.kernel.org/all/000000000000eca0b905fa0f7756@google.com Cc: stable(a)vger.kernel.org Link: https://lore.kernel.org/r/20230426220323.3079789-1-seanjc@google.com Signed-off-by: Sean Christopherson <seanjc(a)google.com> --- arch/x86/kvm/mmu/tdp_mmu.c | 121 +++++++++++++++++-------------------- 1 file changed, 56 insertions(+), 65 deletions(-) diff --git a/arch/x86/kvm/mmu/tdp_mmu.c b/arch/x86/kvm/mmu/tdp_mmu.c index 672f0432d777..70945f00ec41 100644 --- a/arch/x86/kvm/mmu/tdp_mmu.c +++ b/arch/x86/kvm/mmu/tdp_mmu.c @@ -51,7 +51,17 @@ void kvm_mmu_uninit_tdp_mmu(struct kvm *kvm) if (!kvm->arch.tdp_mmu_enabled) return; - /* Also waits for any queued work items. */ + /* + * Invalidate all roots, which besides the obvious, schedules all roots + * for zapping and thus puts the TDP MMU's reference to each root, i.e. + * ultimately frees all roots. + */ + kvm_tdp_mmu_invalidate_all_roots(kvm); + + /* + * Destroying a workqueue also first flushes the workqueue, i.e. no + * need to invoke kvm_tdp_mmu_zap_invalidated_roots(). + */ destroy_workqueue(kvm->arch.tdp_mmu_zap_wq); WARN_ON(!list_empty(&kvm->arch.tdp_mmu_pages)); @@ -127,16 +137,6 @@ static void tdp_mmu_schedule_zap_root(struct kvm *kvm, struct kvm_mmu_page *root queue_work(kvm->arch.tdp_mmu_zap_wq, &root->tdp_mmu_async_work); } -static inline bool kvm_tdp_root_mark_invalid(struct kvm_mmu_page *page) -{ - union kvm_mmu_page_role role = page->role; - role.invalid = true; - - /* No need to use cmpxchg, only the invalid bit can change. */ - role.word = xchg(&page->role.word, role.word); - return role.invalid; -} - void kvm_tdp_mmu_put_root(struct kvm *kvm, struct kvm_mmu_page *root, bool shared) { @@ -145,45 +145,12 @@ void kvm_tdp_mmu_put_root(struct kvm *kvm, struct kvm_mmu_page *root, if (!refcount_dec_and_test(&root->tdp_mmu_root_count)) return; - WARN_ON(!root->tdp_mmu_page); - /* - * The root now has refcount=0. It is valid, but readers already - * cannot acquire a reference to it because kvm_tdp_mmu_get_root() - * rejects it. This remains true for the rest of the execution - * of this function, because readers visit valid roots only - * (except for tdp_mmu_zap_root_work(), which however - * does not acquire any reference itself). - * - * Even though there are flows that need to visit all roots for - * correctness, they all take mmu_lock for write, so they cannot yet - * run concurrently. The same is true after kvm_tdp_root_mark_invalid, - * since the root still has refcount=0. - * - * However, tdp_mmu_zap_root can yield, and writers do not expect to - * see refcount=0 (see for example kvm_tdp_mmu_invalidate_all_roots()). - * So the root temporarily gets an extra reference, going to refcount=1 - * while staying invalid. Readers still cannot acquire any reference; - * but writers are now allowed to run if tdp_mmu_zap_root yields and - * they might take an extra reference if they themselves yield. - * Therefore, when the reference is given back by the worker, - * there is no guarantee that the refcount is still 1. If not, whoever - * puts the last reference will free the page, but they will not have to - * zap the root because a root cannot go from invalid to valid. + * The TDP MMU itself holds a reference to each root until the root is + * explicitly invalidated, i.e. the final reference should be never be + * put for a valid root. */ - if (!kvm_tdp_root_mark_invalid(root)) { - refcount_set(&root->tdp_mmu_root_count, 1); - - /* - * Zapping the root in a worker is not just "nice to have"; - * it is required because kvm_tdp_mmu_invalidate_all_roots() - * skips already-invalid roots. If kvm_tdp_mmu_put_root() did - * not add the root to the workqueue, kvm_tdp_mmu_zap_all_fast() - * might return with some roots not zapped yet. - */ - tdp_mmu_schedule_zap_root(kvm, root); - return; - } + KVM_BUG_ON(!is_tdp_mmu_page(root) || !root->role.invalid, kvm); spin_lock(&kvm->arch.tdp_mmu_pages_lock); list_del_rcu(&root->link); @@ -329,7 +296,14 @@ hpa_t kvm_tdp_mmu_get_vcpu_root_hpa(struct kvm_vcpu *vcpu) root = tdp_mmu_alloc_sp(vcpu); tdp_mmu_init_sp(root, NULL, 0, role); - refcount_set(&root->tdp_mmu_root_count, 1); + /* + * TDP MMU roots are kept until they are explicitly invalidated, either + * by a memslot update or by the destruction of the VM. Initialize the + * refcount to two; one reference for the vCPU, and one reference for + * the TDP MMU itself, which is held until the root is invalidated and + * is ultimately put by tdp_mmu_zap_root_work(). + */ + refcount_set(&root->tdp_mmu_root_count, 2); spin_lock(&kvm->arch.tdp_mmu_pages_lock); list_add_rcu(&root->link, &kvm->arch.tdp_mmu_roots); @@ -1027,32 +1001,49 @@ void kvm_tdp_mmu_zap_invalidated_roots(struct kvm *kvm) /* * Mark each TDP MMU root as invalid to prevent vCPUs from reusing a root that * is about to be zapped, e.g. in response to a memslots update. The actual - * zapping is performed asynchronously, so a reference is taken on all roots. - * Using a separate workqueue makes it easy to ensure that the destruction is - * performed before the "fast zap" completes, without keeping a separate list - * of invalidated roots; the list is effectively the list of work items in - * the workqueue. + * zapping is performed asynchronously. Using a separate workqueue makes it + * easy to ensure that the destruction is performed before the "fast zap" + * completes, without keeping a separate list of invalidated roots; the list is + * effectively the list of work items in the workqueue. * - * Get a reference even if the root is already invalid, the asynchronous worker - * assumes it was gifted a reference to the root it processes. Because mmu_lock - * is held for write, it should be impossible to observe a root with zero refcount, - * i.e. the list of roots cannot be stale. - * - * This has essentially the same effect for the TDP MMU - * as updating mmu_valid_gen does for the shadow MMU. + * Note, the asynchronous worker is gifted the TDP MMU's reference. + * See kvm_tdp_mmu_get_vcpu_root_hpa(). */ void kvm_tdp_mmu_invalidate_all_roots(struct kvm *kvm) { struct kvm_mmu_page *root; - lockdep_assert_held_write(&kvm->mmu_lock); - list_for_each_entry(root, &kvm->arch.tdp_mmu_roots, link) { - if (!root->role.invalid && - !WARN_ON_ONCE(!kvm_tdp_mmu_get_root(root))) { + /* + * mmu_lock must be held for write to ensure that a root doesn't become + * invalid while there are active readers (invalidating a root while + * there are active readers may or may not be problematic in practice, + * but it's uncharted territory and not supported). + * + * Waive the assertion if there are no users of @kvm, i.e. the VM is + * being destroyed after all references have been put, or if no vCPUs + * have been created (which means there are no roots), i.e. the VM is + * being destroyed in an error path of KVM_CREATE_VM. + */ + if (IS_ENABLED(CONFIG_PROVE_LOCKING) && + refcount_read(&kvm->users_count) && kvm->created_vcpus) + lockdep_assert_held_write(&kvm->mmu_lock); + + /* + * As above, mmu_lock isn't held when destroying the VM! There can't + * be other references to @kvm, i.e. nothing else can invalidate roots + * or be consuming roots, but walking the list of roots does need to be + * guarded against roots being deleted by the asynchronous zap worker. + */ + rcu_read_lock(); + + list_for_each_entry_rcu(root, &kvm->arch.tdp_mmu_roots, link) { + if (!root->role.invalid) { root->role.invalid = true; tdp_mmu_schedule_zap_root(kvm, root); } } + + rcu_read_unlock(); } /* base-commit: 802aacbbffe2512dce9f8f33ad99d01cfec435de -- 2.42.0.rc2.253.gd59a3bf2b4-goog

1 year, 4 months

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[PATCH 5.15] Revert "KVM: x86: enable TDP MMU by default"

by Sean Christopherson

Disable the TDP MMU by default in v5.15 kernels to "fix" several severe performance bugs that have since been found and fixed in the TDP MMU, but are unsuitable for backporting to v5.15. The problematic bugs are fixed by upstream commit edbdb43fc96b ("KVM: x86: Preserve TDP MMU roots until they are explicitly invalidated") and commit 01b31714bd90 ("KVM: x86: Do not unload MMU roots when only toggling CR0.WP with TDP enabled"). Both commits fix scenarios where KVM will rebuild all TDP MMU page tables in paths that are frequently hit by certain guest workloads. While not exactly common, the guest workloads are far from rare. The fallout of rebuilding TDP MMU page tables can be so severe in some cases that it induces soft lockups in the guest. Commit edbdb43fc96b would require _significant_ effort and churn to backport due it depending on a major rework that was done in v5.18. Commit 01b31714bd90 has far fewer direct conflicts, but has several subtle _known_ dependencies, and it's unclear whether or not there are more unknown dependencies that have been missed. Lastly, disabling the TDP MMU in v5.15 kernels also fixes a lurking train wreck started by upstream commit a955cad84cda ("KVM: x86/mmu: Retry page fault if root is invalidated by memslot update"). That commit was tagged for stable to fix a memory leak, but didn't cherry-pick cleanly and was never backported to v5.15. Which is extremely fortunate, as it introduced not one but two bugs, one of which was fixed by upstream commit 18c841e1f411 ("KVM: x86: Retry page fault if MMU reload is pending and root has no sp"), while the other was unknowingly fixed by upstream commit ba6e3fe25543 ("KVM: x86/mmu: Grab mmu_invalidate_seq in kvm_faultin_pfn()") in v6.3 (a one-off fix will be made for v6.1 kernels, which did receive a backport for a955cad84cda). Disabling the TDP MMU by default reduces the probability of breaking v5.15 kernels by backporting only a subset of the fixes. As far as what is lost by disabling the TDP MMU, the main selling point of the TDP MMU is its ability to service page fault VM-Exits in parallel, i.e. the main benefactors of the TDP MMU are deployments of large VMs (hundreds of vCPUs), and in particular delployments that live-migrate such VMs and thus need to fault-in huge amounts of memory on many vCPUs after restarting the VM after migration. Smaller VMs can see performance improvements, but nowhere enough to make up for the TDP MMU (in v5.15) absolutely cratering performance for some workloads. And practically speaking, anyone that is deploying and migrating VMs with hundreds of vCPUs is likely rolling their own kernel, not using a stock v5.15 series kernel. This reverts commit 71ba3f3189c78f756a659568fb473600fd78f207. Link: https://lore.kernel.org/all/ZDmEGM+CgYpvDLh6@google.com Link: https://lore.kernel.org/all/f023d927-52aa-7e08-2ee5-59a2fbc65953@gameserver… Cc: Jeremi Piotrowski <jpiotrowski(a)linux.microsoft.com> Cc: Mathias Krause <minipli(a)grsecurity.net> Signed-off-by: Sean Christopherson <seanjc(a)google.com> --- arch/x86/kvm/mmu/tdp_mmu.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/arch/x86/kvm/mmu/tdp_mmu.c b/arch/x86/kvm/mmu/tdp_mmu.c index 6c2bb60ccd88..7a64fb238044 100644 --- a/arch/x86/kvm/mmu/tdp_mmu.c +++ b/arch/x86/kvm/mmu/tdp_mmu.c @@ -10,7 +10,7 @@ #include <asm/cmpxchg.h> #include <trace/events/kvm.h> -static bool __read_mostly tdp_mmu_enabled = true; +static bool __read_mostly tdp_mmu_enabled = false; module_param_named(tdp_mmu, tdp_mmu_enabled, bool, 0644); /* Initializes the TDP MMU for the VM, if enabled. */ base-commit: f6f7927ac664ba23447f8dd3c3dfe2f4ee39272f -- 2.42.0.rc2.253.gd59a3bf2b4-goog

1 year, 4 months

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FAILED: patch "[PATCH] ipvs: fix racy memcpy in proc_do_sync_threshold" failed to apply to 4.19-stable tree

by gregkh＠linuxfoundation.org

The patch below does not apply to the 4.19-stable tree. If someone wants it applied there, or to any other stable or longterm tree, then please email the backport, including the original git commit id to <stable(a)vger.kernel.org>. To reproduce the conflict and resubmit, you may use the following commands: git fetch https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/ linux-4.19.y git checkout FETCH_HEAD git cherry-pick -x 5310760af1d4fbea1452bfc77db5f9a680f7ae47 # <resolve conflicts, build, test, etc.> git commit -s git send-email --to '<stable(a)vger.kernel.org>' --in-reply-to '2023082114-remix-cable-0852@gregkh' --subject-prefix 'PATCH 4.19.y' HEAD^.. Possible dependencies: 5310760af1d4 ("ipvs: fix racy memcpy in proc_do_sync_threshold") 1b90af292e71 ("ipvs: Improve robustness to the ipvs sysctl") thanks, greg k-h ------------------ original commit in Linus's tree ------------------ From 5310760af1d4fbea1452bfc77db5f9a680f7ae47 Mon Sep 17 00:00:00 2001 From: Sishuai Gong <sishuai.system(a)gmail.com> Date: Thu, 10 Aug 2023 15:12:42 -0400 Subject: [PATCH] ipvs: fix racy memcpy in proc_do_sync_threshold When two threads run proc_do_sync_threshold() in parallel, data races could happen between the two memcpy(): Thread-1 Thread-2 memcpy(val, valp, sizeof(val)); memcpy(valp, val, sizeof(val)); This race might mess up the (struct ctl_table *) table->data, so we add a mutex lock to serialize them. Fixes: 1da177e4c3f4 ("Linux-2.6.12-rc2") Link: https://lore.kernel.org/netdev/B6988E90-0A1E-4B85-BF26-2DAF6D482433@gmail.c… Signed-off-by: Sishuai Gong <sishuai.system(a)gmail.com> Acked-by: Simon Horman <horms(a)kernel.org> Acked-by: Julian Anastasov <ja(a)ssi.bg> Signed-off-by: Florian Westphal <fw(a)strlen.de> diff --git a/net/netfilter/ipvs/ip_vs_ctl.c b/net/netfilter/ipvs/ip_vs_ctl.c index 62606fb44d02..4bb0d90eca1c 100644 --- a/net/netfilter/ipvs/ip_vs_ctl.c +++ b/net/netfilter/ipvs/ip_vs_ctl.c @@ -1876,6 +1876,7 @@ static int proc_do_sync_threshold(struct ctl_table *table, int write, void *buffer, size_t *lenp, loff_t *ppos) { + struct netns_ipvs *ipvs = table->extra2; int *valp = table->data; int val[2]; int rc; @@ -1885,6 +1886,7 @@ proc_do_sync_threshold(struct ctl_table *table, int write, .mode = table->mode, }; + mutex_lock(&ipvs->sync_mutex); memcpy(val, valp, sizeof(val)); rc = proc_dointvec(&tmp, write, buffer, lenp, ppos); if (write) { @@ -1894,6 +1896,7 @@ proc_do_sync_threshold(struct ctl_table *table, int write, else memcpy(valp, val, sizeof(val)); } + mutex_unlock(&ipvs->sync_mutex); return rc; } @@ -4321,6 +4324,7 @@ static int __net_init ip_vs_control_net_init_sysctl(struct netns_ipvs *ipvs) ipvs->sysctl_sync_threshold[0] = DEFAULT_SYNC_THRESHOLD; ipvs->sysctl_sync_threshold[1] = DEFAULT_SYNC_PERIOD; tbl[idx].data = &ipvs->sysctl_sync_threshold; + tbl[idx].extra2 = ipvs; tbl[idx++].maxlen = sizeof(ipvs->sysctl_sync_threshold); ipvs->sysctl_sync_refresh_period = DEFAULT_SYNC_REFRESH_PERIOD; tbl[idx++].data = &ipvs->sysctl_sync_refresh_period;

1 year, 4 months

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stable-rc/linux-5.15.y build: 20 builds: 0 failed, 20 passed, 5 warnings (v5.15.128)

by kernelci.org bot

stable-rc/linux-5.15.y build: 20 builds: 0 failed, 20 passed, 5 warnings (v5.15.128) Full Build Summary: https://kernelci.org/build/stable-rc/branch/linux-5.15.y/kernel/v5.15.128/ Tree: stable-rc Branch: linux-5.15.y Git Describe: v5.15.128 Git Commit: 5ddfe5cc87167343bd4c17f776de7b7aa1475b0c Git URL: https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux-stable-rc.git Built: 7 unique architectures Warnings Detected: arc: arm64: arm: i386: mips: 32r2el_defconfig (gcc-10): 1 warning riscv: x86_64: x86_64_defconfig (gcc-10): 2 warnings x86_64_defconfig+x86-chromebook (gcc-10): 2 warnings Warnings summary: 2 arch/x86/lib/retpoline.o: warning: objtool: .altinstr_replacement+0x90: unsupported relocation in alternatives section 2 arch/x86/kernel/smp.o: warning: objtool: sysvec_reboot()+0x45: unreachable instruction 1 arch/mips/boot/dts/img/boston.dts:128.19-178.5: Warning (pci_device_reg): /pci@14000000/pci2_root@0,0,0: PCI unit address format error, expected "0,0" ================================================================================ Detailed per-defconfig build reports: -------------------------------------------------------------------------------- 32r2el_defconfig (mips, gcc-10) — PASS, 0 errors, 1 warning, 0 section mismatches Warnings: arch/mips/boot/dts/img/boston.dts:128.19-178.5: Warning (pci_device_reg): /pci@14000000/pci2_root@0,0,0: PCI unit address format error, expected "0,0" -------------------------------------------------------------------------------- allnoconfig (x86_64, gcc-10) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- allnoconfig (i386, gcc-10) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- defconfig (arm64, gcc-10) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- defconfig (riscv, gcc-10) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- defconfig+arm64-chromebook (arm64, gcc-10) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- haps_hs_smp_defconfig (arc, gcc-10) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- i386_defconfig (i386, gcc-10) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- imx_v6_v7_defconfig (arm, gcc-10) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- multi_v5_defconfig (arm, gcc-10) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- multi_v7_defconfig (arm, gcc-10) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- nommu_k210_defconfig (riscv, gcc-10) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- nommu_k210_sdcard_defconfig (riscv, gcc-10) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- omap2plus_defconfig (arm, gcc-10) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- rv32_defconfig (riscv, gcc-10) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- tinyconfig (x86_64, gcc-10) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- tinyconfig (i386, gcc-10) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- vexpress_defconfig (arm, gcc-10) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- x86_64_defconfig (x86_64, gcc-10) — PASS, 0 errors, 2 warnings, 0 section mismatches Warnings: arch/x86/kernel/smp.o: warning: objtool: sysvec_reboot()+0x45: unreachable instruction arch/x86/lib/retpoline.o: warning: objtool: .altinstr_replacement+0x90: unsupported relocation in alternatives section -------------------------------------------------------------------------------- x86_64_defconfig+x86-chromebook (x86_64, gcc-10) — PASS, 0 errors, 2 warnings, 0 section mismatches Warnings: arch/x86/kernel/smp.o: warning: objtool: sysvec_reboot()+0x45: unreachable instruction arch/x86/lib/retpoline.o: warning: objtool: .altinstr_replacement+0x90: unsupported relocation in alternatives section --- For more info write to <info(a)kernelci.org>

1 year, 4 months

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[PATCH 5.10 000/135] 5.10.191-rc1 review

by Greg Kroah-Hartman

This is the start of the stable review cycle for the 5.10.191 release. There are 135 patches in this series, all will be posted as a response to this one. If anyone has any issues with these being applied, please let me know. Responses should be made by Sat, 26 Aug 2023 14:50:00 +0000. Anything received after that time might be too late. The whole patch series can be found in one patch at: https://www.kernel.org/pub/linux/kernel/v5.x/stable-review/patch-5.10.191-r… or in the git tree and branch at: git://git.kernel.org/pub/scm/linux/kernel/git/stable/linux-stable-rc.git linux-5.10.y and the diffstat can be found below. thanks, greg k-h ------------- Pseudo-Shortlog of commits: Greg Kroah-Hartman <gregkh(a)linuxfoundation.org> Linux 5.10.191-rc1 Borislav Petkov (AMD) <bp(a)alien8.de> x86/srso: Correct the mitigation status when SMT is disabled Peter Zijlstra <peterz(a)infradead.org> objtool/x86: Fixup frame-pointer vs rethunk Petr Pavlu <petr.pavlu(a)suse.com> x86/retpoline,kprobes: Fix position of thunk sections with CONFIG_LTO_CLANG Borislav Petkov (AMD) <bp(a)alien8.de> x86/srso: Disable the mitigation on unaffected configurations Borislav Petkov (AMD) <bp(a)alien8.de> x86/CPU/AMD: Fix the DIV(0) initial fix attempt Sean Christopherson <seanjc(a)google.com> x86/retpoline: Don't clobber RFLAGS during srso_safe_ret() Peter Zijlstra <peterz(a)infradead.org> x86/static_call: Fix __static_call_fixup() Borislav Petkov (AMD) <bp(a)alien8.de> x86/srso: Explain the untraining sequences a bit more Peter Zijlstra <peterz(a)infradead.org> x86/cpu: Cleanup the untrain mess Peter Zijlstra <peterz(a)infradead.org> x86/cpu: Rename srso_(.*)_alias to srso_alias_\1 Peter Zijlstra <peterz(a)infradead.org> x86/cpu: Rename original retbleed methods Peter Zijlstra <peterz(a)infradead.org> x86/cpu: Clean up SRSO return thunk mess Peter Zijlstra <peterz(a)infradead.org> x86/ibt: Add ANNOTATE_NOENDBR Josh Poimboeuf <jpoimboe(a)redhat.com> objtool: Add frame-pointer-specific function ignore Peter Zijlstra <peterz(a)infradead.org> x86/alternative: Make custom return thunk unconditional Peter Zijlstra <peterz(a)infradead.org> x86/cpu: Fix up srso_safe_ret() and __x86_return_thunk() Peter Zijlstra <peterz(a)infradead.org> x86/cpu: Fix __x86_return_thunk symbol type Yangtao Li <frank.li(a)vivo.com> mmc: f-sdh30: fix order of function calls in sdhci_f_sdh30_remove Jason Xing <kernelxing(a)tencent.com> net: fix the RTO timer retransmitting skb every 1ms if linear option is enabled Jason Wang <jasowang(a)redhat.com> virtio-net: set queues after driver_ok Kuniyuki Iwashima <kuniyu(a)amazon.com> af_unix: Fix null-ptr-deref in unix_stream_sendpage(). Xin Long <lucien.xin(a)gmail.com> netfilter: set default timeout to 3 secs for sctp shutdown send and recv state Yibin Ding <yibin.ding(a)unisoc.com> mmc: block: Fix in_flight[issue_type] value error Yang Yingliang <yangyingliang(a)huawei.com> mmc: wbsd: fix double mmc_free_host() in wbsd_init() Russell Harmon via samba-technical <samba-technical(a)lists.samba.org> cifs: Release folio lock on fscache read hit. dengxiang <dengxiang(a)nfschina.com> ALSA: usb-audio: Add support for Mythware XA001AU capture and playback interfaces. Tony Lindgren <tony(a)atomide.com> serial: 8250: Fix oops for port->pm on uart_change_pm() Alexandre Ghiti <alexghiti(a)rivosinc.com> riscv: uaccess: Return the number of bytes effectively not copied Chen Lifu <chenlifu(a)huawei.com> riscv: lib: uaccess: fix CSR_STATUS SR_SUM bit Jisheng Zhang <jszhang(a)kernel.org> riscv: lib: uaccess: fold fixups into body Akira Tsukamoto <akira.tsukamoto(a)gmail.com> riscv: __asm_copy_to-from_user: Optimize unaligned memory access and pipeline stall Kailang Yang <kailang(a)realtek.com> ALSA: hda/realtek - Remodified 3k pull low procedure Jerome Brunet <jbrunet(a)baylibre.com> ASoC: meson: axg-tdm-formatter: fix channel slot allocation Zhang Shurong <zhang_shurong(a)foxmail.com> ASoC: rt5665: add missed regulator_bulk_disable Christopher Obbard <chris.obbard(a)collabora.com> arm64: dts: rockchip: Disable HS400 for eMMC on ROCK Pi 4 FUKAUMI Naoki <naoki(a)radxa.com> arm64: dts: rockchip: sort nodes/properties on rk3399-rock-4 FUKAUMI Naoki <naoki(a)radxa.com> arm64: dts: rockchip: fix regulator name on rk3399-rock-4 Alex Bee <knaerzche(a)gmail.com> arm64: dts: rockchip: add SPDIF node for ROCK Pi 4 Alex Bee <knaerzche(a)gmail.com> arm64: dts: rockchip: add ES8316 codec for ROCK Pi 4 Vicente Bergas <vicencb(a)gmail.com> arm64: dts: rockchip: use USB host by default on rk3399-rock-pi-4 Vicente Bergas <vicencb(a)gmail.com> arm64: dts: rockchip: fix supplies on rk3399-rock-pi-4 Tony Lindgren <tony(a)atomide.com> bus: ti-sysc: Flush posted write on enable before reset Eric Dumazet <edumazet(a)google.com> net: do not allow gso_size to be set to GSO_BY_FRAGS Abel Wu <wuyun.abel(a)bytedance.com> sock: Fix misuse of sk_under_memory_pressure() Alfred Lee <l00g33k(a)gmail.com> net: dsa: mv88e6xxx: Wait for EEPROM done before HW reset Andrii Staikov <andrii.staikov(a)intel.com> i40e: fix misleading debug logs Ziyang Xuan <william.xuanziyang(a)huawei.com> team: Fix incorrect deletion of ETH_P_8021AD protocol vid from slaves Justin Chen <justin.chen(a)broadcom.com> net: phy: broadcom: stub c45 read/write for 54810 Pablo Neira Ayuso <pablo(a)netfilter.org> netfilter: nft_dynset: disallow object maps Sishuai Gong <sishuai.system(a)gmail.com> ipvs: fix racy memcpy in proc_do_sync_threshold Luca Ceresoli <luca.ceresoli(a)bootlin.com> drm/panel: simple: Fix AUO G121EAN01 panel timings according to the docs Petr Machata <petrm(a)nvidia.com> selftests: mirror_gre_changes: Tighten up the TTL test match Lin Ma <linma(a)zju.edu.cn> xfrm: add forgotten nla_policy for XFRMA_MTIMER_THRESH Lin Ma <linma(a)zju.edu.cn> xfrm: add NULL check in xfrm_update_ae_params Zhengchao Shao <shaozhengchao(a)huawei.com> ip_vti: fix potential slab-use-after-free in decode_session6 Zhengchao Shao <shaozhengchao(a)huawei.com> ip6_vti: fix slab-use-after-free in decode_session6 Zhengchao Shao <shaozhengchao(a)huawei.com> xfrm: fix slab-use-after-free in decode_session6 Lin Ma <linma(a)zju.edu.cn> net: xfrm: Amend XFRMA_SEC_CTX nla_policy structure Lin Ma <linma(a)zju.edu.cn> net: af_key: fix sadb_x_filter validation Lin Ma <linma(a)zju.edu.cn> net: xfrm: Fix xfrm_address_filter OOB read Tam Nguyen <tamnguyenchi(a)os.amperecomputing.com> i2c: designware: Handle invalid SMBus block data response length value xiaoshoukui <xiaoshoukui(a)gmail.com> btrfs: fix BUG_ON condition in btrfs_cancel_balance Sherry Sun <sherry.sun(a)nxp.com> tty: serial: fsl_lpuart: Clear the error flags by writing 1 for lpuart32 platforms Yi Yang <yiyang13(a)huawei.com> tty: n_gsm: fix the UAF caused by race condition in gsm_cleanup_mux Nathan Lynch <nathanl(a)linux.ibm.com> powerpc/rtas_flash: allow user copy to flash block cache objects Yuanjun Gong <ruc_gongyuanjun(a)163.com> fbdev: mmp: fix value check in mmphw_probe() Chengfeng Ye <dg573847474(a)gmail.com> i2c: bcm-iproc: Fix bcm_iproc_i2c_isr deadlock issue Wolfram Sang <wsa+renesas(a)sang-engineering.com> virtio-mmio: don't break lifecycle of vm_dev Tang Bin <tangbin(a)cmss.chinamobile.com> virtio-mmio: Use to_virtio_mmio_device() to simply code Ivan Mikhaylov <fr0st61te(a)gmail.com> net/ncsi: change from ndo_set_mac_address to dev_set_mac_address Masami Hiramatsu (Google) <mhiramat(a)kernel.org> tracing/probes: Fix to update dynamic data counter if fetcharg uses it Steven Rostedt (VMware) <rostedt(a)goodmis.org> tracing/probes: Have process_fetch_insn() take a void * instead of pt_regs Sergey Shtylyov <s.shtylyov(a)omp.ru> mmc: meson-gx: fix deferred probing Heiner Kallweit <hkallweit1(a)gmail.com> mmc: meson-gx: use devm_mmc_alloc_host Heiner Kallweit <hkallweit1(a)gmail.com> mmc: core: add devm_mmc_alloc_host Sergey Shtylyov <s.shtylyov(a)omp.ru> mmc: sunxi: fix deferred probing Sergey Shtylyov <s.shtylyov(a)omp.ru> mmc: bcm2835: fix deferred probing Johan Hovold <johan+linaro(a)kernel.org> USB: dwc3: qcom: fix NULL-deref on suspend Frank Li <Frank.Li(a)nxp.com> usb: cdns3: fix NCM gadget RX speed 20x slow than expection at iMX8QM Frank Li <Frank.Li(a)nxp.com> usb: cdns3: allocate TX FIFO size according to composite EP number Wesley Cheng <wcheng(a)codeaurora.org> usb: gadget: udc: core: Introduce check_config to verify USB configuration Pawel Laszczak <pawell(a)cadence.com> usb: cdnsp: Device side header file for CDNSP driver Jiaxun Yang <jiaxun.yang(a)flygoat.com> irqchip/mips-gic: Use raw spinlock for gic_lock Marc Zyngier <maz(a)kernel.org> irqchip/mips-gic: Get rid of the reliance on irq_cpu_online() Jeffrey Hugo <quic_jhugo(a)quicinc.com> bus: mhi: host: Range check CHDBOFF and ERDBOFF Manivannan Sadhasivam <manivannan.sadhasivam(a)linaro.org> bus: mhi: Move host MHI code to "host" directory Bhaumik Bhatt <bbhatt(a)codeaurora.org> bus: mhi: Add MMIO region length to controller structure Loic Poulain <loic.poulain(a)linaro.org> bus: mhi: Add MHI PCI support for WWAN modems William Breathitt Gray <william.gray(a)linaro.org> iio: addac: stx104: Fix race condition when converting analog-to-digital William Breathitt Gray <william.gray(a)linaro.org> iio: addac: stx104: Fix race condition for stx104_write_raw() William Breathitt Gray <william.gray(a)linaro.org> iio: adc: stx104: Implement and utilize register structures William Breathitt Gray <william.gray(a)linaro.org> iio: adc: stx104: Utilize iomap interface Cosmin Tanislav <demonsingur(a)gmail.com> dt-bindings: iio: add AD74413R Cosmin Tanislav <demonsingur(a)gmail.com> iio: add addac subdirectory Randy Dunlap <rdunlap(a)infradead.org> IMA: allow/fix UML builds Chen Lin <chen.lin5(a)zte.com.cn> ring-buffer: Do not swap cpu_buffer during resize process Benjamin Gray <bgray(a)linux.ibm.com> powerpc/kasan: Disable KCOV in KASAN code Tuo Li <islituo(a)gmail.com> ALSA: hda: fix a possible null-pointer dereference due to data race in snd_hdac_regmap_sync() dengxiang <dengxiang(a)nfschina.com> ALSA: hda/realtek: Add quirks for Unis H3C Desktop B760 & Q760 shanzhulig <shanzhulig(a)gmail.com> drm/amdgpu: Fix potential fence use-after-free v2 Matthew Anderson <ruinairas1992(a)gmail.com> Bluetooth: btusb: Add MT7922 bluetooth ID for the Asus Ally Zhengping Jiang <jiangzp(a)google.com> Bluetooth: L2CAP: Fix use-after-free Armin Wolf <W_Armin(a)gmx.de> pcmcia: rsrc_nonstatic: Fix memory leak in nonstatic_release_resource_db() Tuo Li <islituo(a)gmail.com> gfs2: Fix possible data races in gfs2_show_options() Xu Yang <xu.yang_2(a)nxp.com> usb: chipidea: imx: add missing USB PHY DPDM wakeup setting Xu Yang <xu.yang_2(a)nxp.com> usb: chipidea: imx: don't request QoS for imx8ulp Hans Verkuil <hverkuil-cisco(a)xs4all.nl> media: platform: mediatek: vpu: fix NULL ptr dereference Prashanth K <quic_prashk(a)quicinc.com> usb: gadget: u_serial: Avoid spinlock recursion in __gs_console_push Yunfei Dong <yunfei.dong(a)mediatek.com> media: v4l2-mem2mem: add lock to protect parameter num_rdy Immad Mir <mirimmad17(a)gmail.com> FS: JFS: Check for read-only mounted filesystem in txBegin Immad Mir <mirimmad17(a)gmail.com> FS: JFS: Fix null-ptr-deref Read in txBegin Gustavo A. R. Silva <gustavoars(a)kernel.org> MIPS: dec: prom: Address -Warray-bounds warning Yogesh <yogi.kernel(a)gmail.com> fs: jfs: Fix UBSAN: array-index-out-of-bounds in dbAllocDmapLev Jan Kara <jack(a)suse.cz> udf: Fix uninitialized array access for some pathnames Christian Brauner <brauner(a)kernel.org> ovl: check type and offset of struct vfsmount in ovl_entry Patrisious Haddad <phaddad(a)nvidia.com> RDMA/mlx5: Return the firmware result upon destroying QP/RQ Marco Morandini <marco.morandini(a)polimi.it> HID: add quirk for 03f0:464a HP Elite Presenter Mouse Lang Yu <Lang.Yu(a)amd.com> drm/amdgpu: install stub fence into potential unused fence pointers gaoxu <gaoxu2(a)hihonor.com> dma-remap: use kvmalloc_array/kvfree for larger dma memory remap Ye Bin <yebin10(a)huawei.com> quota: fix warning in dqgrab() Jan Kara <jack(a)suse.cz> quota: Properly disable quotas when add_dquot_ref() fails Geert Uytterhoeven <geert+renesas(a)glider.be> iopoll: Call cpu_relax() in busy loops Uday M Bhat <uday.m.bhat(a)intel.com> ASoC: Intel: sof_sdw: Add support for Rex soundwire Oleksij Rempel <linux(a)rempel-privat.de> ARM: dts: imx6dl: prtrvt, prtvt7, prti6q, prtwd2: fix USB related warnings Sumit Gupta <sumitg(a)nvidia.com> PCI: tegra194: Fix possible array out of bounds access Peter Ujfalusi <peter.ujfalusi(a)linux.intel.com> ASoC: Intel: sof_sdw: add quirk for LNL RVP Bard Liao <yung-chuan.liao(a)linux.intel.com> ASoC: Intel: sof_sdw: add quirk for MTL RVP Oswald Buddenhagen <oswald.buddenhagen(a)gmx.de> ALSA: emu10k1: roll up loops in DSP setup code for Audigy hackyzh002 <hackyzh002(a)gmail.com> drm/radeon: Fix integer overflow in radeon_cs_parser_init Moshe Shemesh <moshe(a)nvidia.com> net/mlx5: Skip clock update work when device is in error state Eran Ben Elisha <eranbe(a)mellanox.com> net/mlx5: Move all internal timer metadata into a dedicated struct Eran Ben Elisha <eranbe(a)mellanox.com> net/mlx5: Refactor init clock function Eric Dumazet <edumazet(a)google.com> macsec: use DEV_STATS_INC() Clayton Yager <Clayton_Yager(a)selinc.com> macsec: Fix traffic counters/statistics Kunihiko Hayashi <hayashi.kunihiko(a)socionext.com> mmc: sdhci-f-sdh30: Replace with sdhci_pltfm ------------- Diffstat: Documentation/admin-guide/hw-vuln/srso.rst | 4 +- .../bindings/iio/addac/adi,ad74413r.yaml | 158 +++ Makefile | 4 +- arch/arm/boot/dts/imx6dl-prtrvt.dts | 4 + arch/arm/boot/dts/imx6qdl-prti6q.dtsi | 11 +- arch/arm64/boot/dts/rockchip/rk3399-rock-pi-4.dtsi | 207 +-- arch/mips/include/asm/dec/prom.h | 2 +- arch/powerpc/kernel/rtas_flash.c | 6 +- arch/powerpc/mm/kasan/Makefile | 1 + arch/riscv/lib/uaccess.S | 212 ++- arch/x86/include/asm/entry-common.h | 1 + arch/x86/include/asm/nospec-branch.h | 28 +- arch/x86/kernel/cpu/amd.c | 1 + arch/x86/kernel/cpu/bugs.c | 28 +- arch/x86/kernel/static_call.c | 13 + arch/x86/kernel/traps.c | 2 - arch/x86/kernel/vmlinux.lds.S | 18 +- arch/x86/kvm/svm/svm.c | 1 + arch/x86/lib/retpoline.S | 141 +- drivers/bluetooth/btusb.c | 3 + drivers/bus/Makefile | 2 +- drivers/bus/mhi/Kconfig | 18 +- drivers/bus/mhi/Makefile | 4 +- drivers/bus/mhi/host/Kconfig | 31 + drivers/bus/mhi/{core => host}/Makefile | 4 +- drivers/bus/mhi/{core => host}/boot.c | 0 drivers/bus/mhi/{core => host}/debugfs.c | 0 drivers/bus/mhi/{core => host}/init.c | 12 + drivers/bus/mhi/{core => host}/internal.h | 0 drivers/bus/mhi/{core => host}/main.c | 0 drivers/bus/mhi/host/pci_generic.c | 345 +++++ drivers/bus/mhi/{core => host}/pm.c | 0 drivers/bus/ti-sysc.c | 2 + drivers/gpu/drm/amd/amdgpu/amdgpu_cs.c | 6 +- drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c | 6 +- drivers/gpu/drm/panel/panel-simple.c | 24 +- drivers/gpu/drm/radeon/radeon_cs.c | 3 +- drivers/hid/hid-ids.h | 1 + drivers/hid/hid-quirks.c | 1 + drivers/i2c/busses/i2c-bcm-iproc.c | 11 +- drivers/i2c/busses/i2c-designware-master.c | 15 +- drivers/iio/Kconfig | 1 + drivers/iio/Makefile | 1 + drivers/iio/adc/stx104.c | 98 +- drivers/iio/addac/Kconfig | 8 + drivers/iio/addac/Makefile | 6 + drivers/infiniband/hw/mlx5/qpc.c | 10 +- drivers/irqchip/irq-mips-gic.c | 63 +- drivers/media/platform/mtk-vpu/mtk_vpu.c | 6 +- drivers/mmc/core/block.c | 7 +- drivers/mmc/core/host.c | 26 + drivers/mmc/host/bcm2835.c | 4 +- drivers/mmc/host/meson-gx-mmc.c | 52 +- drivers/mmc/host/sdhci_f_sdh30.c | 66 +- drivers/mmc/host/sunxi-mmc.c | 4 +- drivers/mmc/host/wbsd.c | 2 - drivers/net/dsa/mv88e6xxx/chip.c | 8 + drivers/net/ethernet/intel/i40e/i40e_nvm.c | 16 +- .../net/ethernet/mellanox/mlx5/core/lib/clock.c | 166 ++- .../net/ethernet/mellanox/mlx5/core/lib/clock.h | 3 +- drivers/net/macsec.c | 70 +- drivers/net/phy/broadcom.c | 13 + drivers/net/team/team.c | 4 +- drivers/net/virtio_net.c | 4 +- drivers/pci/controller/dwc/pcie-tegra194.c | 13 +- drivers/pcmcia/rsrc_nonstatic.c | 2 + drivers/tty/n_gsm.c | 3 +- drivers/tty/serial/8250/8250_port.c | 1 + drivers/tty/serial/fsl_lpuart.c | 4 +- drivers/usb/cdns3/cdnsp-gadget.h | 1463 ++++++++++++++++++++ drivers/usb/cdns3/gadget.c | 60 +- drivers/usb/cdns3/gadget.h | 9 +- drivers/usb/chipidea/ci_hdrc_imx.c | 5 + drivers/usb/chipidea/usbmisc_imx.c | 2 +- drivers/usb/dwc3/dwc3-qcom.c | 11 +- drivers/usb/gadget/function/u_serial.c | 3 + drivers/usb/gadget/udc/core.c | 19 + drivers/video/fbdev/mmp/hw/mmp_ctrl.c | 4 +- drivers/virtio/virtio_mmio.c | 8 +- fs/btrfs/volumes.c | 3 +- fs/cifs/file.c | 2 +- fs/gfs2/super.c | 26 +- fs/jfs/jfs_dmap.c | 3 + fs/jfs/jfs_txnmgr.c | 5 + fs/jfs/namei.c | 5 + fs/overlayfs/ovl_entry.h | 9 + fs/quota/dquot.c | 5 +- fs/udf/unicode.c | 2 +- include/dt-bindings/iio/addac/adi,ad74413r.h | 21 + include/linux/iopoll.h | 2 + include/linux/mhi.h | 2 + include/linux/mlx5/driver.h | 12 +- include/linux/mmc/host.h | 1 + include/linux/objtool.h | 28 + include/linux/usb/gadget.h | 4 + include/linux/virtio_net.h | 4 + include/media/v4l2-mem2mem.h | 18 +- include/net/sock.h | 6 + kernel/dma/remap.c | 4 +- kernel/trace/ring_buffer.c | 14 +- kernel/trace/trace.c | 3 +- kernel/trace/trace_kprobe.c | 3 +- kernel/trace/trace_probe_tmpl.h | 18 +- kernel/trace/trace_uprobe.c | 3 +- net/bluetooth/l2cap_core.c | 5 + net/core/sock.c | 2 +- net/ipv4/ip_vti.c | 4 +- net/ipv4/tcp_timer.c | 4 +- net/ipv6/ip6_vti.c | 4 +- net/key/af_key.c | 4 +- net/ncsi/ncsi-rsp.c | 5 +- net/netfilter/ipvs/ip_vs_ctl.c | 4 + net/netfilter/nf_conntrack_proto_sctp.c | 6 +- net/netfilter/nft_dynset.c | 3 + net/unix/af_unix.c | 9 +- net/xfrm/xfrm_compat.c | 2 +- net/xfrm/xfrm_interface_core.c | 4 +- net/xfrm/xfrm_user.c | 14 +- security/integrity/ima/Kconfig | 2 +- sound/hda/hdac_regmap.c | 7 +- sound/pci/emu10k1/emufx.c | 112 +- sound/pci/hda/patch_realtek.c | 16 +- sound/soc/codecs/rt5665.c | 2 + sound/soc/intel/boards/sof_sdw.c | 25 + sound/soc/meson/axg-tdm-formatter.c | 42 +- sound/usb/quirks-table.h | 29 + tools/include/linux/objtool.h | 28 + tools/objtool/arch/x86/decode.c | 2 +- tools/objtool/check.c | 21 +- .../selftests/net/forwarding/mirror_gre_changes.sh | 3 +- 130 files changed, 3442 insertions(+), 695 deletions(-)

1 year, 4 months

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[PATCH V2] LoongArch: Ensure FP/SIMD registers in the core dump file is up to date

by Huacai Chen

This is a port of commit 379eb01c21795edb4c ("riscv: Ensure the value of FP registers in the core dump file is up to date"). The values of FP/SIMD registers in the core dump file come from the thread.fpu. However, kernel saves the FP/SIMD registers only before scheduling out the process. If no process switch happens during the exception handling, kernel will not have a chance to save the latest values of FP/SIMD registers. So it may cause their values in the core dump file incorrect. To solve this problem, force fpr_get()/simd_get() to save the FP/SIMD registers into the thread.fpu if the target task equals the current task. Cc: stable(a)vger.kernel.org Signed-off-by: Huacai Chen <chenhuacai(a)loongson.cn> --- V2: Rename get_fpu_regs() to save_fpu_regs(). arch/loongarch/include/asm/fpu.h | 22 ++++++++++++++++++---- arch/loongarch/kernel/ptrace.c | 4 ++++ 2 files changed, 22 insertions(+), 4 deletions(-) diff --git a/arch/loongarch/include/asm/fpu.h b/arch/loongarch/include/asm/fpu.h index b541f6248837..08a45e9fd15c 100644 --- a/arch/loongarch/include/asm/fpu.h +++ b/arch/loongarch/include/asm/fpu.h @@ -173,16 +173,30 @@ static inline void restore_fp(struct task_struct *tsk) _restore_fp(&tsk->thread.fpu); } -static inline union fpureg *get_fpu_regs(struct task_struct *tsk) +static inline void save_fpu_regs(struct task_struct *tsk) { + unsigned int euen; + if (tsk == current) { preempt_disable(); - if (is_fpu_owner()) + + euen = csr_read32(LOONGARCH_CSR_EUEN); + +#ifdef CONFIG_CPU_HAS_LASX + if (euen & CSR_EUEN_LASXEN) + _save_lasx(&current->thread.fpu); + else +#endif +#ifdef CONFIG_CPU_HAS_LSX + if (euen & CSR_EUEN_LSXEN) + _save_lsx(&current->thread.fpu); + else +#endif + if (euen & CSR_EUEN_FPEN) _save_fp(&current->thread.fpu); + preempt_enable(); } - - return tsk->thread.fpu.fpr; } static inline int is_simd_owner(void) diff --git a/arch/loongarch/kernel/ptrace.c b/arch/loongarch/kernel/ptrace.c index a0767c3a0f0a..9a75dc43eb29 100644 --- a/arch/loongarch/kernel/ptrace.c +++ b/arch/loongarch/kernel/ptrace.c @@ -147,6 +147,8 @@ static int fpr_get(struct task_struct *target, { int r; + save_fpu_regs(target); + if (sizeof(target->thread.fpu.fpr[0]) == sizeof(elf_fpreg_t)) r = gfpr_get(target, &to); else @@ -278,6 +280,8 @@ static int simd_get(struct task_struct *target, { const unsigned int wr_size = NUM_FPU_REGS * regset->size; + save_fpu_regs(target); + if (!tsk_used_math(target)) { /* The task hasn't used FP or LSX, fill with 0xff */ copy_pad_fprs(target, regset, &to, 0); -- 2.39.3

1 year, 4 months

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stable/linux-5.10.y build: 19 builds: 0 failed, 19 passed, 7 warnings (v5.10.192)

by kernelci.org bot

stable/linux-5.10.y build: 19 builds: 0 failed, 19 passed, 7 warnings (v5.10.192) Full Build Summary: https://kernelci.org/build/stable/branch/linux-5.10.y/kernel/v5.10.192/ Tree: stable Branch: linux-5.10.y Git Describe: v5.10.192 Git Commit: 1599cb60bace881ce05fa520e5251be341e380d2 Git URL: https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux-stable.git Built: 7 unique architectures Warnings Detected: arc: arm64: arm: i386: mips: 32r2el_defconfig (gcc-10): 1 warning riscv: rv32_defconfig (gcc-10): 4 warnings x86_64: x86_64_defconfig (gcc-10): 1 warning x86_64_defconfig+x86-chromebook (gcc-10): 1 warning Warnings summary: 2 arch/x86/lib/retpoline.o: warning: objtool: .altinstr_replacement+0x90: unsupported relocation in alternatives section 2 <stdin>:830:2: warning: #warning syscall fstat64 not implemented [-Wcpp] 2 <stdin>:1127:2: warning: #warning syscall fstatat64 not implemented [-Wcpp] 1 WARNING: modpost: Symbol info of vmlinux is missing. Unresolved symbol check will be entirely skipped. ================================================================================ Detailed per-defconfig build reports: -------------------------------------------------------------------------------- 32r2el_defconfig (mips, gcc-10) — PASS, 0 errors, 1 warning, 0 section mismatches Warnings: WARNING: modpost: Symbol info of vmlinux is missing. Unresolved symbol check will be entirely skipped. -------------------------------------------------------------------------------- allnoconfig (i386, gcc-10) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- allnoconfig (x86_64, gcc-10) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- defconfig (riscv, gcc-10) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- defconfig (arm64, gcc-10) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- defconfig+arm64-chromebook (arm64, gcc-10) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- haps_hs_smp_defconfig (arc, gcc-10) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- i386_defconfig (i386, gcc-10) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- imx_v6_v7_defconfig (arm, gcc-10) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- multi_v5_defconfig (arm, gcc-10) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- multi_v7_defconfig (arm, gcc-10) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- nommu_k210_defconfig (riscv, gcc-10) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- omap2plus_defconfig (arm, gcc-10) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- rv32_defconfig (riscv, gcc-10) — PASS, 0 errors, 4 warnings, 0 section mismatches Warnings: <stdin>:830:2: warning: #warning syscall fstat64 not implemented [-Wcpp] <stdin>:1127:2: warning: #warning syscall fstatat64 not implemented [-Wcpp] <stdin>:830:2: warning: #warning syscall fstat64 not implemented [-Wcpp] <stdin>:1127:2: warning: #warning syscall fstatat64 not implemented [-Wcpp] -------------------------------------------------------------------------------- tinyconfig (i386, gcc-10) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- tinyconfig (x86_64, gcc-10) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- vexpress_defconfig (arm, gcc-10) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- x86_64_defconfig (x86_64, gcc-10) — PASS, 0 errors, 1 warning, 0 section mismatches Warnings: arch/x86/lib/retpoline.o: warning: objtool: .altinstr_replacement+0x90: unsupported relocation in alternatives section -------------------------------------------------------------------------------- x86_64_defconfig+x86-chromebook (x86_64, gcc-10) — PASS, 0 errors, 1 warning, 0 section mismatches Warnings: arch/x86/lib/retpoline.o: warning: objtool: .altinstr_replacement+0x90: unsupported relocation in alternatives section --- For more info write to <info(a)kernelci.org>

1 year, 4 months

1
0
0 0

stable-rc/linux-6.1.y build: 20 builds: 0 failed, 20 passed, 1 warning (v6.1.48)

by kernelci.org bot

stable-rc/linux-6.1.y build: 20 builds: 0 failed, 20 passed, 1 warning (v6.1.48) Full Build Summary: https://kernelci.org/build/stable-rc/branch/linux-6.1.y/kernel/v6.1.48/ Tree: stable-rc Branch: linux-6.1.y Git Describe: v6.1.48 Git Commit: cd363bb9548ec3208120bb3f55ff4ded2487d7fb Git URL: https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux-stable-rc.git Built: 7 unique architectures Warnings Detected: arc: arm64: arm: i386: mips: 32r2el_defconfig (gcc-10): 1 warning riscv: x86_64: Warnings summary: 1 arch/mips/boot/dts/img/boston.dts:128.19-178.5: Warning (pci_device_reg): /pci@14000000/pci2_root@0,0,0: PCI unit address format error, expected "0,0" ================================================================================ Detailed per-defconfig build reports: -------------------------------------------------------------------------------- 32r2el_defconfig (mips, gcc-10) — PASS, 0 errors, 1 warning, 0 section mismatches Warnings: arch/mips/boot/dts/img/boston.dts:128.19-178.5: Warning (pci_device_reg): /pci@14000000/pci2_root@0,0,0: PCI unit address format error, expected "0,0" -------------------------------------------------------------------------------- allnoconfig (i386, gcc-10) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- allnoconfig (x86_64, gcc-10) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- defconfig (riscv, gcc-10) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- defconfig (arm64, gcc-10) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- defconfig+arm64-chromebook (arm64, gcc-10) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- haps_hs_smp_defconfig (arc, gcc-10) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- i386_defconfig (i386, gcc-10) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- imx_v6_v7_defconfig (arm, gcc-10) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- multi_v5_defconfig (arm, gcc-10) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- multi_v7_defconfig (arm, gcc-10) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- nommu_k210_defconfig (riscv, gcc-10) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- nommu_k210_sdcard_defconfig (riscv, gcc-10) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- omap2plus_defconfig (arm, gcc-10) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- rv32_defconfig (riscv, gcc-10) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- tinyconfig (i386, gcc-10) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- tinyconfig (x86_64, gcc-10) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- vexpress_defconfig (arm, gcc-10) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- x86_64_defconfig (x86_64, gcc-10) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- x86_64_defconfig+x86-chromebook (x86_64, gcc-10) — PASS, 0 errors, 0 warnings, 0 section mismatches --- For more info write to <info(a)kernelci.org>

1 year, 4 months

1
0
0 0

stable-rc/linux-5.10.y build: 19 builds: 0 failed, 19 passed, 7 warnings (v5.10.192)

by kernelci.org bot

stable-rc/linux-5.10.y build: 19 builds: 0 failed, 19 passed, 7 warnings (v5.10.192) Full Build Summary: https://kernelci.org/build/stable-rc/branch/linux-5.10.y/kernel/v5.10.192/ Tree: stable-rc Branch: linux-5.10.y Git Describe: v5.10.192 Git Commit: 1599cb60bace881ce05fa520e5251be341e380d2 Git URL: https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux-stable-rc.git Built: 7 unique architectures Warnings Detected: arc: arm64: arm: i386: mips: 32r2el_defconfig (gcc-10): 1 warning riscv: rv32_defconfig (gcc-10): 4 warnings x86_64: x86_64_defconfig (gcc-10): 1 warning x86_64_defconfig+x86-chromebook (gcc-10): 1 warning Warnings summary: 2 arch/x86/lib/retpoline.o: warning: objtool: .altinstr_replacement+0x90: unsupported relocation in alternatives section 2 <stdin>:830:2: warning: #warning syscall fstat64 not implemented [-Wcpp] 2 <stdin>:1127:2: warning: #warning syscall fstatat64 not implemented [-Wcpp] 1 WARNING: modpost: Symbol info of vmlinux is missing. Unresolved symbol check will be entirely skipped. ================================================================================ Detailed per-defconfig build reports: -------------------------------------------------------------------------------- 32r2el_defconfig (mips, gcc-10) — PASS, 0 errors, 1 warning, 0 section mismatches Warnings: WARNING: modpost: Symbol info of vmlinux is missing. Unresolved symbol check will be entirely skipped. -------------------------------------------------------------------------------- allnoconfig (i386, gcc-10) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- allnoconfig (x86_64, gcc-10) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- defconfig (riscv, gcc-10) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- defconfig (arm64, gcc-10) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- defconfig+arm64-chromebook (arm64, gcc-10) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- haps_hs_smp_defconfig (arc, gcc-10) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- i386_defconfig (i386, gcc-10) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- imx_v6_v7_defconfig (arm, gcc-10) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- multi_v5_defconfig (arm, gcc-10) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- multi_v7_defconfig (arm, gcc-10) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- nommu_k210_defconfig (riscv, gcc-10) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- omap2plus_defconfig (arm, gcc-10) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- rv32_defconfig (riscv, gcc-10) — PASS, 0 errors, 4 warnings, 0 section mismatches Warnings: <stdin>:830:2: warning: #warning syscall fstat64 not implemented [-Wcpp] <stdin>:1127:2: warning: #warning syscall fstatat64 not implemented [-Wcpp] <stdin>:830:2: warning: #warning syscall fstat64 not implemented [-Wcpp] <stdin>:1127:2: warning: #warning syscall fstatat64 not implemented [-Wcpp] -------------------------------------------------------------------------------- tinyconfig (i386, gcc-10) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- tinyconfig (x86_64, gcc-10) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- vexpress_defconfig (arm, gcc-10) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- x86_64_defconfig (x86_64, gcc-10) — PASS, 0 errors, 1 warning, 0 section mismatches Warnings: arch/x86/lib/retpoline.o: warning: objtool: .altinstr_replacement+0x90: unsupported relocation in alternatives section -------------------------------------------------------------------------------- x86_64_defconfig+x86-chromebook (x86_64, gcc-10) — PASS, 0 errors, 1 warning, 0 section mismatches Warnings: arch/x86/lib/retpoline.o: warning: objtool: .altinstr_replacement+0x90: unsupported relocation in alternatives section --- For more info write to <info(a)kernelci.org>

1 year, 4 months

1
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0 0

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Linux-stable-mirror August 2023