April 2020 - LKP - Ml01.01.Org

[tracing] 06e0a548ba: WARNING:at_kernel/trace/ring_buffer.c:#ring_buffer_iter_peek

by kernel test robot

Greeting, FYI, we noticed the following commit (built with gcc-7): commit: 06e0a548bad0f43a21e036db018e4dadb501ce8b ("tracing: Do not disable tracing when reading the trace file") https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git master in testcase: kernel-selftests with following parameters: group: kselftests-01 ucode: 0x500002c test-description: The kernel contains a set of "self tests" under the tools/testing/selftests/ directory. These are intended to be small unit tests to exercise individual code paths in the kernel. test-url: https://www.kernel.org/doc/Documentation/kselftest.txt on test machine: 192 threads Intel(R) Xeon(R) Platinum 9242 CPU @ 2.30GHz with 192G memory caused below changes (please refer to attached dmesg/kmsg for entire log/backtrace): If you fix the issue, kindly add following tag Reported-by: kernel test robot <lkp(a)intel.com> kern :warn : [ 886.763510] WARNING: CPU: 70 PID: 22584 at kernel/trace/ring_buffer.c:4067 ring_buffer_iter_peek+0x13c/0x1d0 kern :warn : [ 886.776216] Modules linked in: test_firmware intel_rapl_msr intel_rapl_common skx_edac nfit libnvdimm btrfs x86_pkg_temp_thermal intel_powerclamp blake2b_generic xor zstd_decompress zstd_compress coretemp ast kvm_intel kvm raid6_pq drm_vram_helper drm_ttm_helper libcrc32c irqbypass ttm crct10dif_pclmul crc32_pclmul drm_kms_helper snd_pcm crc32c_intel ghash_clmulni_intel ahci snd_timer syscopyarea libahci aesni_intel ipmi_ssif sysfillrect snd crypto_simd sysimgblt cryptd nvme fb_sys_fops mei_me soundcore ipmi_si glue_helper pcspkr drm nvme_core ioatdma ipmi_devintf t10_pi libata mei i2c_i801 joydev lpc_ich dca ipmi_msghandler wmi acpi_pad acpi_power_meter ip_tables kern :warn : [ 886.838112] CPU: 70 PID: 22584 Comm: cat Not tainted 5.6.0-rc4-00017-g06e0a548bad0f #1 kern :warn : [ 886.846573] RIP: 0010:ring_buffer_iter_peek+0x13c/0x1d0 kern :warn : [ 886.852355] Code: 41 5e 41 5f c3 83 38 1d 0f 85 98 00 00 00 48 89 df e8 78 cb ff ff e9 32 ff ff ff 80 3c 24 00 75 c8 49 8b 44 24 10 f0 ff 40 08 <0f> 0b 4c 89 f6 4c 89 ef e8 37 8c 8f 00 48 83 c4 08 31 c0 5b 5d 41 kern :warn : [ 886.872239] RSP: 0018:ffffc900213e7d78 EFLAGS: 00010002 kern :warn : [ 886.878030] RAX: ffff889883ea7740 RBX: ffff88a3fbd93720 RCX: ffff88a42101b700 kern :warn : [ 886.885731] RDX: ffff88a415c02e00 RSI: ffff88a42101b440 RDI: ffff88a3fbd93720 kern :warn : [ 886.893432] RBP: 0000000000000000 R08: 000000ce959ae6ab R09: ffff88a42101bb80 kern :warn : [ 886.901129] R10: ffff88a3e99e2300 R11: 0000000000000178 R12: ffff88a415c02e00 kern :warn : [ 886.908831] R13: ffff88a415c02e18 R14: 0000000000000296 R15: ffffc900213e7df8 kern :warn : [ 886.916521] FS: 00007f12d51d2640(0000) GS:ffff88a44f780000(0000) knlGS:0000000000000000 kern :warn : [ 886.925179] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 kern :warn : [ 886.931495] CR2: 00007f12d4e36000 CR3: 00000023e901e006 CR4: 00000000007606e0 kern :warn : [ 886.939194] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 kern :warn : [ 886.946896] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 kern :warn : [ 886.954588] PKRU: 55555554 kern :warn : [ 886.957858] Call Trace: kern :warn : [ 886.960866] peek_next_entry+0x22/0x70 kern :warn : [ 886.965165] __find_next_entry+0xaf/0x180 kern :warn : [ 886.969714] trace_find_next_entry_inc+0x1e/0x80 kern :warn : [ 886.974863] s_next+0x49/0x70 kern :warn : [ 886.978355] seq_read+0x23f/0x400 kern :warn : [ 886.982193] vfs_read+0x9b/0x160 kern :warn : [ 886.985937] ksys_read+0xa1/0xe0 kern :warn : [ 886.989677] do_syscall_64+0x5b/0x1f0 kern :warn : [ 886.993853] entry_SYSCALL_64_after_hwframe+0x44/0xa9 kern :warn : [ 886.999408] RIP: 0033:0x7f12d50f559e kern :warn : [ 887.003479] Code: c0 e9 c6 fe ff ff 50 48 8d 3d 36 fc 09 00 e8 e9 e7 01 00 66 0f 1f 84 00 00 00 00 00 64 8b 04 25 18 00 00 00 85 c0 75 14 0f 05 <48> 3d 00 f0 ff ff 77 5a c3 66 0f 1f 84 00 00 00 00 00 48 83 ec 28 kern :warn : [ 887.023260] RSP: 002b:00007ffdab31acd8 EFLAGS: 00000246 ORIG_RAX: 0000000000000000 kern :warn : [ 887.031350] RAX: ffffffffffffffda RBX: 0000000000020000 RCX: 00007f12d50f559e kern :warn : [ 887.039006] RDX: 0000000000020000 RSI: 00007f12d4e36000 RDI: 0000000000000005 kern :warn : [ 887.046657] RBP: 00007f12d4e36000 R08: 00007f12d4e35010 R09: 0000000000000000 kern :warn : [ 887.054305] R10: fffffffffffffc4d R11: 0000000000000246 R12: 00007f12d4e36000 kern :warn : [ 887.061958] R13: 0000000000000005 R14: 0000000000020000 R15: 0000000000000f93 kern :warn : [ 887.069608] ---[ end trace 507492ef8332a5b4 ]--- To reproduce: git clone https://github.com/intel/lkp-tests.git cd lkp-tests bin/lkp install job.yaml # job file is attached in this email bin/lkp run job.yaml Thanks, lkp

2 years

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[fs] ce436509a8: ltp.openat203.fail

by kernel test robot

Greeting, FYI, we noticed the following commit (built with gcc-7): commit: ce436509a8e109330c56bb4d8ec87d258788f5f4 ("[PATCH v4 2/3] fs: openat2: Extend open_how to allow userspace-selected fds") url: https://github.com/0day-ci/linux/commits/Josh-Triplett/Support-userspace-... base: https://git.kernel.org/cgit/linux/kernel/git/shuah/linux-kselftest.git next in testcase: ltp with following parameters: disk: 1HDD fs: ext4 test: syscalls_part4 test-description: The LTP testsuite contains a collection of tools for testing the Linux kernel and related features. test-url: http://linux-test-project.github.io/ on test machine: qemu-system-x86_64 -enable-kvm -cpu SandyBridge -smp 2 -m 8G caused below changes (please refer to attached dmesg/kmsg for entire log/backtrace): If you fix the issue, kindly add following tag Reported-by: kernel test robot <rong.a.chen(a)intel.com> <<<test_start>>> tag=openat203 stime=1587952903 cmdline="openat203" contacts="" analysis=exit <<<test_output>>> tst_buffers.c:55: INFO: Test is using guarded buffers tst_test.c:1246: INFO: Timeout per run is 0h 05m 00s openat203.c:67: PASS: invalid-dfd: openat2() failed as expected: EBADF (9) openat203.c:67: PASS: invalid-pathname: openat2() failed as expected: EFAULT (14) openat203.c:67: PASS: invalid-flags: openat2() failed as expected: EINVAL (22) openat203.c:67: PASS: invalid-mode: openat2() failed as expected: EINVAL (22) openat203.c:67: PASS: invalid-resolve: openat2() failed as expected: EINVAL (22) openat203.c:67: PASS: invalid-size-zero: openat2() failed as expected: EINVAL (22) openat203.c:67: PASS: invalid-size-small: openat2() failed as expected: EINVAL (22) openat203.c:67: PASS: invalid-size-big: openat2() failed as expected: EFAULT (14) openat203.c:63: FAIL: invalid-size-big-with-pad: openat2() should fail with E2BIG: EINVAL (22) Summary: passed 8 failed 1 skipped 0 warnings 0 <<<execution_status>>> initiation_status="ok" duration=0 termination_type=exited termination_id=1 corefile=no cutime=0 cstime=0 <<<test_end>>> To reproduce: # build kernel cd linux cp config-5.7.0-rc1-00005-gce436509a8e10 .config make HOSTCC=gcc-7 CC=gcc-7 ARCH=x86_64 olddefconfig prepare modules_prepare bzImage modules make HOSTCC=gcc-7 CC=gcc-7 ARCH=x86_64 INSTALL_MOD_PATH=<mod-install-dir> modules_install cd <mod-install-dir> find lib/ | cpio -o -H newc --quiet | gzip > modules.cgz git clone https://github.com/intel/lkp-tests.git cd lkp-tests bin/lkp qemu -k <bzImage> -m modules.cgz job-script # job-script is attached in this email Thanks, Rong Chen

2 years

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[mm] b79980a586: WARNING:at_kernel/locking/lockdep.c:#__lock_acquire

by kernel test robot

Greeting, FYI, we noticed the following commit (built with gcc-7): commit: b79980a586f5a910ee92b360e55e2aabf33981ff ("mm: Move pt_mm within struct page") git://git.infradead.org/users/willy/linux-dax.git pt_mm in testcase: trinity with following parameters: runtime: 300s test-description: Trinity is a linux system call fuzz tester. test-url: http://codemonkey.org.uk/projects/trinity/ on test machine: qemu-system-x86_64 -enable-kvm -cpu SandyBridge -smp 2 -m 8G caused below changes (please refer to attached dmesg/kmsg for entire log/backtrace): +-----------------------------------------------------------+----------+------------+ | | v5.7-rc3 | b79980a586 | +-----------------------------------------------------------+----------+------------+ | boot_successes | 29 | 0 | | boot_failures | 17 | 4 | | BUG:unable_to_handle_page_fault_for_address | 1 | | | Oops:#[##] | 2 | 4 | | Kernel_panic-not_syncing:Fatal_exception | 2 | 4 | | BUG:kernel_NULL_pointer_dereference,address | 1 | 4 | | RIP:__rb_erase_color | 1 | | | BUG:kernel_hang_in_boot_stage | 5 | | | Assertion_failed | 4 | | | Kernel_panic-not_syncing:Attempted_to_kill_init!exitcode= | 9 | | | BUG:workqueue_lockup-pool | 1 | | | WARNING:at_kernel/locking/lockdep.c:#__lock_acquire | 0 | 4 | | RIP:__lock_acquire | 0 | 4 | +-----------------------------------------------------------+----------+------------+ If you fix the issue, kindly add following tag Reported-by: kernel test robot <lkp(a)intel.com> [ 2.549572] WARNING: CPU: 0 PID: 0 at kernel/locking/lockdep.c:183 __lock_acquire+0x707/0x1910 [ 2.550743] Modules linked in: [ 2.550743] CPU: 0 PID: 0 Comm: swapper/0 Not tainted 5.7.0-rc3-00001-gb79980a586f5a #1 [ 2.550743] RIP: 0010:__lock_acquire+0x707/0x1910 [ 2.550743] Code: a1 15 24 a5 48 c7 c7 59 12 13 a5 e8 43 f4 f8 ff 0f 0b e9 29 fb ff ff 48 c7 c6 a1 15 24 a5 48 c7 c7 59 12 13 a5 e8 29 f4 f8 ff <0f> 0b 31 c0 e9 c7 fa ff ff 41 bf 01 00 00 00 48 89 0b 41 8b 85 68 [ 2.550743] RSP: 0000:ffffffffa5603ca8 EFLAGS: 00010082 [ 2.550743] RAX: 0000000000000000 RBX: ffffffffa567c558 RCX: 0000000097ea2c7c [ 2.550743] RDX: 0000000000000016 RSI: ffffffffa27ad1a3 RDI: ffffffffa27ad1ea [ 2.550743] RBP: ffffffffa5603d28 R08: 0000000000000001 R09: 0000000000000000 [ 2.550743] R10: 0000000000000000 R11: 2931284e4f5f4e52 R12: bd981937e545b767 [ 2.550743] R13: ffffffffa567b8c0 R14: 0000000000000001 R15: 0000000000000017 [ 2.550743] FS: 0000000000000000(0000) GS:ffff8979f7c00000(0000) knlGS:0000000000000000 [ 2.550743] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 2.550743] CR2: 00000000ffffffff CR3: 0000000035272000 CR4: 00000000000406b0 [ 2.550743] Call Trace: [ 2.550743] ? cpu_bugs_smt_update+0x13/0x2d0 [ 2.550743] lock_acquire+0xa0/0x390 [ 2.550743] ? sync_global_pgds_l4+0x114/0x170 [ 2.550743] ? find_held_lock+0x35/0xa0 [ 2.550743] ? cpu_bugs_smt_update+0x112/0x2d0 [ 2.550743] _raw_spin_lock+0x2a/0x40 [ 2.550743] ? sync_global_pgds_l4+0x114/0x170 [ 2.550743] sync_global_pgds_l4+0x114/0x170 [ 2.550743] sync_global_pgds+0x9/0x10 [ 2.550743] vmalloc_sync_mappings+0x2a/0x30 [ 2.550743] register_die_notifier+0xd/0x20 [ 2.550743] alternative_instructions+0x2a/0x125 [ 2.550743] check_bugs+0x832/0x8a5 [ 2.550743] start_kernel+0x4e9/0x515 [ 2.550743] x86_64_start_reservations+0x24/0x26 [ 2.550743] x86_64_start_kernel+0x74/0x77 [ 2.550743] secondary_startup_64+0xa4/0xb0 [ 2.550743] irq event stamp: 3461 [ 2.550743] hardirqs last enabled at (3461): [<ffffffffa27abd40>] console_unlock+0x440/0x5a0 [ 2.550743] hardirqs last disabled at (3460): [<ffffffffa27ab97c>] console_unlock+0x7c/0x5a0 [ 2.550743] softirqs last enabled at (3450): [<ffffffffa440028c>] __do_softirq+0x28c/0x46d [ 2.550743] softirqs last disabled at (3443): [<ffffffffa27375c3>] irq_exit+0xb3/0xc0 [ 2.550743] ---[ end trace 2556965f47d35212 ]--- To reproduce: # build kernel cd linux cp config-5.7.0-rc3-00001-gb79980a586f5a .config make HOSTCC=gcc-7 CC=gcc-7 ARCH=x86_64 olddefconfig prepare modules_prepare bzImage git clone https://github.com/intel/lkp-tests.git cd lkp-tests bin/lkp qemu -k <bzImage> job-script # job-script is attached in this email Thanks, lkp

2 years

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[crypto] beeb460cd1: stress-ng.af-alg.ops_per_sec 17454.7% improvement

by kernel test robot

Greeting, FYI, we noticed a 17454.7% improvement of stress-ng.af-alg.ops_per_sec due to commit: commit: beeb460cd12ac9b91640b484b6a52dcba9d9fc8f ("crypto: algapi - Avoid spurious modprobe on LOADED") https://git.kernel.org/cgit/linux/kernel/git/next/linux-next.git master in testcase: stress-ng on test machine: 88 threads Intel(R) Xeon(R) CPU E5-2699 v4 @ 2.20GHz with 128G memory with following parameters: nr_threads: 100% disk: 1HDD testtime: 1s class: cpu cpufreq_governor: performance ucode: 0xb000038 Details are as below: --------------------------------------------------------------------------------------------------> To reproduce: git clone https://github.com/intel/lkp-tests.git cd lkp-tests bin/lkp install job.yaml # job file is attached in this email bin/lkp run job.yaml ========================================================================================= class/compiler/cpufreq_governor/disk/kconfig/nr_threads/rootfs/tbox_group/testcase/testtime/ucode: cpu/gcc-7/performance/1HDD/x86_64-rhel-7.6/100%/debian-x86_64-20191114.cgz/lkp-bdw-ep6/stress-ng/1s/0xb000038 commit: 56b80bdee4 ("crypto: sun8i-ss - Delete an error message in sun8i_ss_probe()") beeb460cd1 ("crypto: algapi - Avoid spurious modprobe on LOADED") 56b80bdee4a16cf3 beeb460cd12ac9b91640b484b6a ---------------- --------------------------- %stddev %change %stddev \ | \ 1099 ± 90% +4914.5% 55147 stress-ng.af-alg.ops 190.88 ± 88% +17454.7% 33508 ± 2% stress-ng.af-alg.ops_per_sec 112458 +13.6% 127769 ± 6% stress-ng.atomic.ops 112544 +13.6% 127847 ± 6% stress-ng.atomic.ops_per_sec 47.26 -7.5% 43.73 stress-ng.time.elapsed_time 47.26 -7.5% 43.73 stress-ng.time.elapsed_time.max 7336 +7.8% 7908 stress-ng.time.percent_of_cpu_this_job_got 55189 ± 18% +77.3% 97878 ± 7% stress-ng.time.voluntary_context_switches 0.80 +6.2% 0.85 ± 5% boot-time.smp_boot 46139 +21.1% 55857 ± 2% meminfo.Shmem 16.95 -6.0 10.91 ± 4% mpstat.cpu.all.idle% 6.843e+08 ± 6% -56.8% 2.956e+08 ± 34% cpuidle.C6.time 763608 -39.6% 460844 ± 7% cpuidle.C6.usage 32623 ± 3% -9.9% 29394 ± 2% softirqs.CPU54.TIMER 31389 ± 5% -8.3% 28775 softirqs.CPU61.TIMER 33888 ± 6% -13.0% 29487 softirqs.CPU70.TIMER 19.50 ± 2% -26.9% 14.25 ± 5% vmstat.cpu.id 65.75 +6.8% 70.25 vmstat.cpu.us 5444 ± 12% +67.5% 9120 ± 6% vmstat.system.cs 1730383 ± 10% +16.3% 2012737 ± 2% numa-numastat.node0.local_node 1785683 ± 9% +15.7% 2065187 ± 2% numa-numastat.node0.numa_hit 1827655 ± 7% +14.8% 2097849 ± 8% numa-numastat.node1.local_node 1857503 ± 7% +14.8% 2132540 ± 7% numa-numastat.node1.numa_hit 1218409 ± 9% +28.4% 1564653 ± 3% numa-vmstat.node0.numa_hit 1044425 ± 11% +36.7% 1427589 ± 7% numa-vmstat.node0.numa_local 1257153 ± 4% +25.5% 1577543 ± 6% numa-vmstat.node1.numa_hit 1226664 ± 3% +22.8% 1506818 ± 10% numa-vmstat.node1.numa_local 20.13 -28.0% 14.49 ± 4% iostat.cpu.idle 13.70 ± 2% +7.7% 14.76 ± 2% iostat.cpu.system 66.17 +6.9% 70.75 iostat.cpu.user 6.19 ±100% -100.0% 0.00 iostat.sda.await.max 6.19 ±100% -100.0% 0.00 iostat.sda.r_await.max 3.09 ±100% -100.0% 0.00 iostat.sda.svctm.max 7012 ± 18% +61.7% 11338 ± 8% slabinfo.cred_jar.active_objs 166.50 ± 18% +62.0% 269.75 ± 8% slabinfo.cred_jar.active_slabs 7012 ± 18% +61.7% 11338 ± 8% slabinfo.cred_jar.num_objs 166.50 ± 18% +62.0% 269.75 ± 8% slabinfo.cred_jar.num_slabs 22516 ± 6% +16.7% 26265 ± 6% slabinfo.filp.active_objs 727.75 ± 5% +16.9% 851.00 ± 6% slabinfo.filp.active_slabs 23308 ± 5% +16.9% 27243 ± 6% slabinfo.filp.num_objs 727.75 ± 5% +16.9% 851.00 ± 6% slabinfo.filp.num_slabs 281401 +1.0% 284257 proc-vmstat.nr_file_pages 6038 +4.7% 6321 ± 2% proc-vmstat.nr_inactive_anon 9715 +6.0% 10297 ± 2% proc-vmstat.nr_mapped 11522 +20.9% 13935 ± 3% proc-vmstat.nr_shmem 38248 +2.6% 39226 proc-vmstat.nr_slab_unreclaimable 6038 +4.7% 6321 ± 2% proc-vmstat.nr_zone_inactive_anon 3673028 ± 8% +14.9% 4220629 ± 5% proc-vmstat.numa_hit 3587869 ± 8% +15.2% 4133471 ± 5% proc-vmstat.numa_local 7827 +41.5% 11074 ± 2% proc-vmstat.pgactivate 3506649 ± 9% +15.3% 4043091 ± 5% proc-vmstat.pgfault 102330 ± 2% +9.2% 111707 ± 4% proc-vmstat.pgmigrate_success 4898 ± 6% -21.5% 3846 ± 22% sched_debug.cfs_rq:/.load.avg 3505 ± 8% +29.7% 4547 ± 17% sched_debug.cfs_rq:/.runnable_avg.max 2842 ± 62% -91.4% 245.06 ±443% sched_debug.cfs_rq:/.spread0.avg 16461 ± 11% -29.2% 11649 ± 24% sched_debug.cfs_rq:/.spread0.max -2942 +73.7% -5111 sched_debug.cfs_rq:/.spread0.min 40.84 ± 33% -49.8% 20.51 ± 28% sched_debug.cfs_rq:/.util_est_enqueued.avg 665.50 ± 29% -26.1% 492.00 ± 3% sched_debug.cfs_rq:/.util_est_enqueued.max 130.10 ± 21% -32.8% 87.38 ± 14% sched_debug.cfs_rq:/.util_est_enqueued.stddev 303.34 ± 8% -24.3% 229.64 ± 12% sched_debug.cpu.curr->pid.avg 674.10 ± 3% -12.5% 589.53 ± 5% sched_debug.cpu.curr->pid.stddev 0.17 ± 10% -23.0% 0.13 ± 12% sched_debug.cpu.nr_running.avg 62.75 ± 6% -25.9% 46.50 ± 20% sched_debug.cpu.nr_uninterruptible.max 3391 ± 28% +90.6% 6462 ± 4% interrupts.CPU0.NMI:Non-maskable_interrupts 3391 ± 28% +90.6% 6462 ± 4% interrupts.CPU0.PMI:Performance_monitoring_interrupts 3153 ± 24% +99.3% 6285 interrupts.CPU1.NMI:Non-maskable_interrupts 3153 ± 24% +99.3% 6285 interrupts.CPU1.PMI:Performance_monitoring_interrupts 3886 ± 10% +68.1% 6532 ± 6% interrupts.CPU10.NMI:Non-maskable_interrupts 3886 ± 10% +68.1% 6532 ± 6% interrupts.CPU10.PMI:Performance_monitoring_interrupts 3694 ± 4% +69.0% 6244 interrupts.CPU11.NMI:Non-maskable_interrupts 3694 ± 4% +69.0% 6244 interrupts.CPU11.PMI:Performance_monitoring_interrupts 3618 ± 2% +76.2% 6374 ± 3% interrupts.CPU12.NMI:Non-maskable_interrupts 3618 ± 2% +76.2% 6374 ± 3% interrupts.CPU12.PMI:Performance_monitoring_interrupts 3180 ± 25% +96.7% 6256 interrupts.CPU18.NMI:Non-maskable_interrupts 3180 ± 25% +96.7% 6256 interrupts.CPU18.PMI:Performance_monitoring_interrupts 2702 ± 32% +130.6% 6233 interrupts.CPU19.NMI:Non-maskable_interrupts 2702 ± 32% +130.6% 6233 interrupts.CPU19.PMI:Performance_monitoring_interrupts 154.50 ± 10% +29.4% 200.00 ± 6% interrupts.CPU19.RES:Rescheduling_interrupts 3384 ± 28% +85.5% 6276 interrupts.CPU2.NMI:Non-maskable_interrupts 3384 ± 28% +85.5% 6276 interrupts.CPU2.PMI:Performance_monitoring_interrupts 2797 ± 29% +123.4% 6247 interrupts.CPU20.NMI:Non-maskable_interrupts 2797 ± 29% +123.4% 6247 interrupts.CPU20.PMI:Performance_monitoring_interrupts 2879 ± 36% +121.5% 6378 ± 2% interrupts.CPU21.NMI:Non-maskable_interrupts 2879 ± 36% +121.5% 6378 ± 2% interrupts.CPU21.PMI:Performance_monitoring_interrupts 3039 ± 42% +110.9% 6408 ± 3% interrupts.CPU22.NMI:Non-maskable_interrupts 3039 ± 42% +110.9% 6408 ± 3% interrupts.CPU22.PMI:Performance_monitoring_interrupts 3145 ± 23% +99.3% 6269 interrupts.CPU23.NMI:Non-maskable_interrupts 3145 ± 23% +99.3% 6269 interrupts.CPU23.PMI:Performance_monitoring_interrupts 3156 ± 23% +99.5% 6298 interrupts.CPU24.NMI:Non-maskable_interrupts 3156 ± 23% +99.5% 6298 interrupts.CPU24.PMI:Performance_monitoring_interrupts 3274 ± 25% +92.0% 6287 interrupts.CPU25.NMI:Non-maskable_interrupts 3274 ± 25% +92.0% 6287 interrupts.CPU25.PMI:Performance_monitoring_interrupts 3135 ± 23% +107.3% 6500 ± 6% interrupts.CPU26.NMI:Non-maskable_interrupts 3135 ± 23% +107.3% 6500 ± 6% interrupts.CPU26.PMI:Performance_monitoring_interrupts 3140 ± 23% +107.3% 6508 ± 6% interrupts.CPU27.NMI:Non-maskable_interrupts 3140 ± 23% +107.3% 6508 ± 6% interrupts.CPU27.PMI:Performance_monitoring_interrupts 164.25 ± 7% +27.2% 209.00 ± 8% interrupts.CPU29.RES:Rescheduling_interrupts 3620 ± 2% +78.4% 6458 ± 2% interrupts.CPU3.NMI:Non-maskable_interrupts 3620 ± 2% +78.4% 6458 ± 2% interrupts.CPU3.PMI:Performance_monitoring_interrupts 3201 ± 23% +95.5% 6257 interrupts.CPU37.NMI:Non-maskable_interrupts 3201 ± 23% +95.5% 6257 interrupts.CPU37.PMI:Performance_monitoring_interrupts 3142 ± 23% +101.3% 6325 interrupts.CPU38.NMI:Non-maskable_interrupts 3142 ± 23% +101.3% 6325 interrupts.CPU38.PMI:Performance_monitoring_interrupts 3139 ± 23% +102.8% 6366 ± 2% interrupts.CPU39.NMI:Non-maskable_interrupts 3139 ± 23% +102.8% 6366 ± 2% interrupts.CPU39.PMI:Performance_monitoring_interrupts 3180 ± 25% +97.3% 6274 interrupts.CPU40.NMI:Non-maskable_interrupts 3180 ± 25% +97.3% 6274 interrupts.CPU40.PMI:Performance_monitoring_interrupts 3175 ± 26% +97.6% 6273 interrupts.CPU41.NMI:Non-maskable_interrupts 3175 ± 26% +97.6% 6273 interrupts.CPU41.PMI:Performance_monitoring_interrupts 3796 ± 40% +65.0% 6265 interrupts.CPU42.NMI:Non-maskable_interrupts 3796 ± 40% +65.0% 6265 interrupts.CPU42.PMI:Performance_monitoring_interrupts 3285 ± 27% +92.8% 6333 interrupts.CPU43.NMI:Non-maskable_interrupts 3285 ± 27% +92.8% 6333 interrupts.CPU43.PMI:Performance_monitoring_interrupts 3310 ± 27% +98.4% 6568 ± 7% interrupts.CPU44.NMI:Non-maskable_interrupts 3310 ± 27% +98.4% 6568 ± 7% interrupts.CPU44.PMI:Performance_monitoring_interrupts 3178 ± 26% +97.5% 6276 interrupts.CPU45.NMI:Non-maskable_interrupts 3178 ± 26% +97.5% 6276 interrupts.CPU45.PMI:Performance_monitoring_interrupts 3415 ± 29% +83.9% 6279 interrupts.CPU46.NMI:Non-maskable_interrupts 3415 ± 29% +83.9% 6279 interrupts.CPU46.PMI:Performance_monitoring_interrupts 3178 ± 26% +105.0% 6514 ± 5% interrupts.CPU47.NMI:Non-maskable_interrupts 3178 ± 26% +105.0% 6514 ± 5% interrupts.CPU47.PMI:Performance_monitoring_interrupts 3171 ± 26% +97.9% 6276 interrupts.CPU48.NMI:Non-maskable_interrupts 3171 ± 26% +97.9% 6276 interrupts.CPU48.PMI:Performance_monitoring_interrupts 3163 ± 25% +97.7% 6253 interrupts.CPU49.NMI:Non-maskable_interrupts 3163 ± 25% +97.7% 6253 interrupts.CPU49.PMI:Performance_monitoring_interrupts 3617 ± 2% +76.2% 6371 ± 2% interrupts.CPU50.NMI:Non-maskable_interrupts 3617 ± 2% +76.2% 6371 ± 2% interrupts.CPU50.PMI:Performance_monitoring_interrupts 155.00 ± 9% +32.1% 204.75 ± 7% interrupts.CPU50.RES:Rescheduling_interrupts 3618 ± 2% +73.2% 6267 interrupts.CPU59.NMI:Non-maskable_interrupts 3618 ± 2% +73.2% 6267 interrupts.CPU59.PMI:Performance_monitoring_interrupts 157.25 ± 10% +25.4% 197.25 ± 12% interrupts.CPU59.RES:Rescheduling_interrupts 3620 ± 2% +73.2% 6271 interrupts.CPU63.NMI:Non-maskable_interrupts 3620 ± 2% +73.2% 6271 interrupts.CPU63.PMI:Performance_monitoring_interrupts 152.25 ± 5% +15.9% 176.50 ± 4% interrupts.CPU64.RES:Rescheduling_interrupts 3159 ± 24% +98.6% 6275 interrupts.CPU67.NMI:Non-maskable_interrupts 3159 ± 24% +98.6% 6275 interrupts.CPU67.PMI:Performance_monitoring_interrupts 3610 ± 2% +73.5% 6264 interrupts.CPU7.NMI:Non-maskable_interrupts 3610 ± 2% +73.5% 6264 interrupts.CPU7.PMI:Performance_monitoring_interrupts 162.50 ± 4% +188.3% 468.50 ± 91% interrupts.CPU70.RES:Rescheduling_interrupts 3805 ± 8% +64.6% 6265 interrupts.CPU75.NMI:Non-maskable_interrupts 3805 ± 8% +64.6% 6265 interrupts.CPU75.PMI:Performance_monitoring_interrupts 171.00 ± 11% +51.3% 258.75 ± 35% interrupts.CPU77.RES:Rescheduling_interrupts 3612 ± 2% +73.8% 6277 interrupts.CPU8.NMI:Non-maskable_interrupts 3612 ± 2% +73.8% 6277 interrupts.CPU8.PMI:Performance_monitoring_interrupts 3171 ± 24% +97.7% 6269 interrupts.CPU85.NMI:Non-maskable_interrupts 3171 ± 24% +97.7% 6269 interrupts.CPU85.PMI:Performance_monitoring_interrupts 3469 ± 30% +80.4% 6257 interrupts.CPU86.NMI:Non-maskable_interrupts 3469 ± 30% +80.4% 6257 interrupts.CPU86.PMI:Performance_monitoring_interrupts 3332 ± 27% +88.9% 6294 interrupts.CPU87.NMI:Non-maskable_interrupts 3332 ± 27% +88.9% 6294 interrupts.CPU87.PMI:Performance_monitoring_interrupts 4234 ± 24% +47.6% 6251 interrupts.CPU9.NMI:Non-maskable_interrupts 4234 ± 24% +47.6% 6251 interrupts.CPU9.PMI:Performance_monitoring_interrupts 298153 +69.5% 505374 ± 4% interrupts.NMI:Non-maskable_interrupts 298153 +69.5% 505374 ± 4% interrupts.PMI:Performance_monitoring_interrupts 77.22 -28.8 48.43 perf-profile.calltrace.cycles-pp.swapcontext 37.82 -13.6 24.17 perf-profile.calltrace.cycles-pp.entry_SYSCALL_64_after_hwframe.swapcontext 37.15 -13.4 23.74 perf-profile.calltrace.cycles-pp.do_syscall_64.entry_SYSCALL_64_after_hwframe.swapcontext 16.94 ± 4% -11.1 5.83 ± 9% perf-profile.calltrace.cycles-pp.cpu_startup_entry.start_secondary.secondary_startup_64 16.94 ± 4% -11.1 5.83 ± 9% perf-profile.calltrace.cycles-pp.start_secondary.secondary_startup_64 17.12 ± 4% -11.1 6.01 ± 10% perf-profile.calltrace.cycles-pp.secondary_startup_64 16.93 ± 4% -11.1 5.83 ± 9% perf-profile.calltrace.cycles-pp.do_idle.cpu_startup_entry.start_secondary.secondary_startup_64 15.69 ± 3% -10.2 5.52 ± 9% perf-profile.calltrace.cycles-pp.cpuidle_enter.do_idle.cpu_startup_entry.start_secondary.secondary_startup_64 15.51 ± 3% -10.0 5.47 ± 9% perf-profile.calltrace.cycles-pp.cpuidle_enter_state.cpuidle_enter.do_idle.cpu_startup_entry.start_secondary 12.70 ± 3% -7.8 4.89 ± 11% perf-profile.calltrace.cycles-pp.intel_idle.cpuidle_enter_state.cpuidle_enter.do_idle.cpu_startup_entry 16.40 -6.7 9.68 perf-profile.calltrace.cycles-pp.entry_SYSCALL_64.swapcontext 6.46 -2.3 4.17 perf-profile.calltrace.cycles-pp.syscall_return_via_sysret.swapcontext 6.69 ± 3% -2.2 4.48 ± 4% perf-profile.calltrace.cycles-pp.__x64_sys_rt_sigprocmask.do_syscall_64.entry_SYSCALL_64_after_hwframe.swapcontext 2.65 ± 5% -2.0 0.63 ± 10% perf-profile.calltrace.cycles-pp.apic_timer_interrupt.cpuidle_enter_state.cpuidle_enter.do_idle.cpu_startup_entry 2.45 ± 5% -2.0 0.46 ± 57% perf-profile.calltrace.cycles-pp.smp_apic_timer_interrupt.apic_timer_interrupt.cpuidle_enter_state.cpuidle_enter.do_idle 2.70 ± 5% -0.9 1.82 ± 4% perf-profile.calltrace.cycles-pp._copy_from_user.__x64_sys_rt_sigprocmask.do_syscall_64.entry_SYSCALL_64_after_hwframe.swapcontext 1.10 ± 5% -0.6 0.47 ± 58% perf-profile.calltrace.cycles-pp.worker_thread.kthread.ret_from_fork 1.09 ± 6% -0.6 0.46 ± 57% perf-profile.calltrace.cycles-pp.process_one_work.worker_thread.kthread.ret_from_fork 1.06 ± 6% -0.6 0.45 ± 57% perf-profile.calltrace.cycles-pp.drm_fb_helper_dirty_work.process_one_work.worker_thread.kthread.ret_from_fork 1.61 -0.6 1.04 perf-profile.calltrace.cycles-pp._copy_to_user.__x64_sys_rt_sigprocmask.do_syscall_64.entry_SYSCALL_64_after_hwframe.swapcontext 1.00 ± 6% -0.6 0.43 ± 58% perf-profile.calltrace.cycles-pp.memcpy_erms.drm_fb_helper_dirty_work.process_one_work.worker_thread.kthread 1.15 ± 5% -0.5 0.62 ± 11% perf-profile.calltrace.cycles-pp.ret_from_fork 1.14 ± 5% -0.5 0.61 ± 11% perf-profile.calltrace.cycles-pp.kthread.ret_from_fork 1.11 ± 7% -0.4 0.75 ± 4% perf-profile.calltrace.cycles-pp.__might_fault._copy_from_user.__x64_sys_rt_sigprocmask.do_syscall_64.entry_SYSCALL_64_after_hwframe 0.00 +6.5 6.53 perf-profile.calltrace.cycles-pp.fetestexcept 0.00 +31.1 31.14 perf-profile.calltrace.cycles-pp.feclearexcept 77.29 -28.4 48.89 perf-profile.children.cycles-pp.swapcontext 39.34 -13.7 25.60 perf-profile.children.cycles-pp.entry_SYSCALL_64_after_hwframe 38.74 -13.5 25.23 perf-profile.children.cycles-pp.do_syscall_64 17.12 ± 4% -11.1 6.01 ± 10% perf-profile.children.cycles-pp.do_idle 16.94 ± 4% -11.1 5.83 ± 9% perf-profile.children.cycles-pp.start_secondary 17.12 ± 4% -11.1 6.01 ± 10% perf-profile.children.cycles-pp.secondary_startup_64 17.12 ± 4% -11.1 6.01 ± 10% perf-profile.children.cycles-pp.cpu_startup_entry 15.85 ± 3% -10.2 5.69 ± 10% perf-profile.children.cycles-pp.cpuidle_enter 15.84 ± 3% -10.1 5.69 ± 10% perf-profile.children.cycles-pp.cpuidle_enter_state 12.83 ± 3% -7.9 4.92 ± 10% perf-profile.children.cycles-pp.intel_idle 15.73 -6.0 9.70 perf-profile.children.cycles-pp.entry_SYSCALL_64 7.14 -2.5 4.62 perf-profile.children.cycles-pp.syscall_return_via_sysret 6.74 ± 3% -2.2 4.51 ± 4% perf-profile.children.cycles-pp.__x64_sys_rt_sigprocmask 4.50 ± 4% -2.0 2.48 ± 5% perf-profile.children.cycles-pp.apic_timer_interrupt 4.12 ± 3% -1.9 2.23 ± 4% perf-profile.children.cycles-pp.smp_apic_timer_interrupt 2.96 ± 3% -1.2 1.75 ± 4% perf-profile.children.cycles-pp.hrtimer_interrupt 2.75 ± 5% -0.9 1.85 ± 4% perf-profile.children.cycles-pp._copy_from_user 2.04 ± 5% -0.8 1.21 ± 3% perf-profile.children.cycles-pp.__hrtimer_run_queues 0.92 ± 17% -0.7 0.22 ± 15% perf-profile.children.cycles-pp.menu_select 1.66 -0.6 1.08 perf-profile.children.cycles-pp._copy_to_user 1.74 ± 3% -0.6 1.16 ± 4% perf-profile.children.cycles-pp.__might_fault 1.15 ± 4% -0.5 0.63 ± 10% perf-profile.children.cycles-pp.ret_from_fork 1.14 ± 5% -0.5 0.61 ± 11% perf-profile.children.cycles-pp.kthread 1.10 ± 5% -0.5 0.59 ± 11% perf-profile.children.cycles-pp.worker_thread 1.09 ± 6% -0.5 0.58 ± 11% perf-profile.children.cycles-pp.process_one_work 1.06 ± 6% -0.5 0.57 ± 12% perf-profile.children.cycles-pp.drm_fb_helper_dirty_work 1.07 ± 6% -0.5 0.57 ± 12% perf-profile.children.cycles-pp.memcpy_erms 1.27 ± 8% -0.4 0.84 perf-profile.children.cycles-pp.tick_sched_timer 1.33 ± 3% -0.4 0.91 perf-profile.children.cycles-pp.copy_user_generic_unrolled 0.72 ± 13% -0.4 0.32 ± 7% perf-profile.children.cycles-pp.vprintk_emit 0.70 ± 4% -0.4 0.31 ± 12% perf-profile.children.cycles-pp.irq_exit 0.72 ± 14% -0.4 0.33 ± 26% perf-profile.children.cycles-pp.console_unlock 0.48 ± 14% -0.4 0.11 ± 12% perf-profile.children.cycles-pp.tick_nohz_get_sleep_length 1.11 ± 6% -0.4 0.74 ± 2% perf-profile.children.cycles-pp.tick_sched_handle 0.64 ± 15% -0.4 0.28 ± 26% perf-profile.children.cycles-pp.serial8250_console_write 0.61 ± 15% -0.3 0.28 ± 26% perf-profile.children.cycles-pp.uart_console_write 1.06 ± 6% -0.3 0.73 ± 2% perf-profile.children.cycles-pp.update_process_times 0.54 ± 22% -0.3 0.22 ± 11% perf-profile.children.cycles-pp.io_serial_in 0.52 ± 14% -0.3 0.20 ± 10% perf-profile.children.cycles-pp._fini 0.52 ± 14% -0.3 0.20 ± 10% perf-profile.children.cycles-pp.devkmsg_write 0.52 ± 14% -0.3 0.20 ± 10% perf-profile.children.cycles-pp.devkmsg_emit 0.54 ± 13% -0.3 0.22 ± 11% perf-profile.children.cycles-pp.write 0.55 ± 21% -0.3 0.24 ± 28% perf-profile.children.cycles-pp.wait_for_xmitr 0.53 ± 20% -0.3 0.22 ± 15% perf-profile.children.cycles-pp.ktime_get 0.53 ± 14% -0.3 0.23 ± 9% perf-profile.children.cycles-pp.ksys_write 0.53 ± 14% -0.3 0.23 ± 9% perf-profile.children.cycles-pp.vfs_write 0.53 ± 14% -0.3 0.23 ± 9% perf-profile.children.cycles-pp.new_sync_write 0.54 ± 20% -0.3 0.24 ± 28% perf-profile.children.cycles-pp.serial8250_console_putchar 0.38 ± 11% -0.3 0.09 ± 12% perf-profile.children.cycles-pp.tick_nohz_next_event 0.55 ± 8% -0.3 0.26 ± 12% perf-profile.children.cycles-pp.__softirqentry_text_start 0.85 ± 2% -0.3 0.56 ± 6% perf-profile.children.cycles-pp.___might_sleep 0.75 ± 5% -0.3 0.48 ± 4% perf-profile.children.cycles-pp.copy_user_enhanced_fast_string 0.68 ± 2% -0.2 0.46 ± 3% perf-profile.children.cycles-pp.scheduler_tick 0.47 ± 8% -0.2 0.26 ± 17% perf-profile.children.cycles-pp.clockevents_program_event 0.27 ± 17% -0.2 0.06 ± 13% perf-profile.children.cycles-pp.get_next_timer_interrupt 0.28 ± 6% -0.2 0.08 ± 5% perf-profile.children.cycles-pp.irq_enter 0.22 ± 6% -0.2 0.03 ±100% perf-profile.children.cycles-pp.tick_irq_enter 0.19 ± 21% -0.2 0.03 ±100% perf-profile.children.cycles-pp.__next_timer_interrupt 0.35 ± 6% -0.2 0.18 ± 14% perf-profile.children.cycles-pp.perf_mux_hrtimer_handler 0.39 ± 11% -0.1 0.25 ± 15% perf-profile.children.cycles-pp.__x86_indirect_thunk_rax 0.32 ± 5% -0.1 0.19 ± 9% perf-profile.children.cycles-pp.sigprocmask 0.42 ± 4% -0.1 0.30 ± 6% perf-profile.children.cycles-pp.__might_sleep 0.18 ± 9% -0.1 0.09 ± 7% perf-profile.children.cycles-pp.read_tsc 0.11 ± 7% -0.1 0.03 ±100% perf-profile.children.cycles-pp.timerqueue_del 0.14 ± 5% -0.1 0.06 ± 13% perf-profile.children.cycles-pp.__remove_hrtimer 0.23 ± 17% -0.1 0.15 ± 10% perf-profile.children.cycles-pp.native_write_msr 0.14 ± 11% -0.1 0.07 ± 7% perf-profile.children.cycles-pp.run_timer_softirq 0.17 ± 6% -0.1 0.10 ± 17% perf-profile.children.cycles-pp._raw_spin_lock 0.17 ± 12% -0.1 0.11 ± 11% perf-profile.children.cycles-pp.ktime_get_update_offsets_now 0.13 ± 9% -0.1 0.08 ± 10% perf-profile.children.cycles-pp.__set_current_blocked 0.08 ± 26% -0.1 0.03 ±102% perf-profile.children.cycles-pp.fbcon_putcs 0.13 ± 6% -0.0 0.08 ± 10% perf-profile.children.cycles-pp.swapcontext@plt 0.10 ± 7% -0.0 0.06 ± 7% perf-profile.children.cycles-pp.arch_scale_freq_tick 0.09 ± 26% -0.0 0.04 ± 60% perf-profile.children.cycles-pp.vt_console_print 0.09 ± 26% -0.0 0.04 ± 60% perf-profile.children.cycles-pp.lf 0.09 ± 26% -0.0 0.04 ± 60% perf-profile.children.cycles-pp.con_scroll 0.09 ± 26% -0.0 0.04 ± 60% perf-profile.children.cycles-pp.fbcon_scroll 0.09 ± 26% -0.0 0.04 ± 60% perf-profile.children.cycles-pp.fbcon_redraw 0.08 ± 10% -0.0 0.04 ± 60% perf-profile.children.cycles-pp.ksys_read 0.11 ± 26% -0.0 0.08 ± 14% perf-profile.children.cycles-pp.crypto_alloc_tfm 0.11 ± 26% -0.0 0.08 ± 14% perf-profile.children.cycles-pp.crypto_alg_mod_lookup 0.11 ± 26% -0.0 0.08 ± 14% perf-profile.children.cycles-pp.__request_module 0.11 ± 26% -0.0 0.08 ± 10% perf-profile.children.cycles-pp.bind 0.11 ± 26% -0.0 0.08 ± 10% perf-profile.children.cycles-pp.__x64_sys_bind 0.11 ± 26% -0.0 0.08 ± 10% perf-profile.children.cycles-pp.__sys_bind 0.11 ± 26% -0.0 0.08 ± 10% perf-profile.children.cycles-pp.alg_bind 0.10 ± 10% -0.0 0.07 ± 17% perf-profile.children.cycles-pp._raw_spin_lock_irq 0.08 -0.0 0.05 ± 9% perf-profile.children.cycles-pp.__intel_pmu_enable_all 0.32 ± 3% -0.0 0.29 ± 3% perf-profile.children.cycles-pp.task_tick_fair 0.01 ±173% +0.0 0.06 ± 7% perf-profile.children.cycles-pp.cexp 0.00 +0.1 0.08 ± 5% perf-profile.children.cycles-pp.@plt 0.00 +0.1 0.11 ± 10% perf-profile.children.cycles-pp.memcpy@plt 0.00 +0.1 0.12 ± 5% perf-profile.children.cycles-pp.prepare_to_wait_event 0.00 +0.1 0.15 ± 7% perf-profile.children.cycles-pp.sqrt 0.00 +0.2 0.16 ± 7% perf-profile.children.cycles-pp.feclearexcept@plt 0.00 +0.2 0.17 ± 11% perf-profile.children.cycles-pp.fetestexcept@plt 0.00 +0.2 0.18 ± 4% perf-profile.children.cycles-pp.__errno_location@plt 0.03 ±100% +0.2 0.23 ± 36% perf-profile.children.cycles-pp.syscall 0.00 +0.2 0.20 ± 10% perf-profile.children.cycles-pp.finished_loading 0.00 +0.2 0.21 ± 2% perf-profile.children.cycles-pp.fegetround 0.00 +0.3 0.32 ± 15% perf-profile.children.cycles-pp.osq_lock 0.00 +0.3 0.33 ± 17% perf-profile.children.cycles-pp.__mutex_lock 0.00 +0.4 0.38 ± 4% perf-profile.children.cycles-pp.log2 0.00 +0.4 0.40 ± 6% perf-profile.children.cycles-pp.__errno_location 0.00 +0.4 0.40 ± 4% perf-profile.children.cycles-pp.log 0.03 ±100% +0.4 0.47 ± 20% perf-profile.children.cycles-pp.__do_sys_finit_module 0.03 ±100% +0.4 0.47 ± 20% perf-profile.children.cycles-pp.load_module 0.00 +0.5 0.51 perf-profile.children.cycles-pp.exp 0.00 +6.5 6.53 perf-profile.children.cycles-pp.fetestexcept 0.00 +31.2 31.16 perf-profile.children.cycles-pp.feclearexcept 30.34 -11.1 19.20 perf-profile.self.cycles-pp.do_syscall_64 12.80 ± 3% -7.9 4.92 ± 10% perf-profile.self.cycles-pp.intel_idle 16.64 ± 2% -6.2 10.41 ± 2% perf-profile.self.cycles-pp.swapcontext 15.04 -5.8 9.27 perf-profile.self.cycles-pp.entry_SYSCALL_64 7.13 -2.5 4.62 perf-profile.self.cycles-pp.syscall_return_via_sysret 1.96 ± 6% -0.6 1.36 ± 6% perf-profile.self.cycles-pp.__x64_sys_rt_sigprocmask 1.07 ± 6% -0.5 0.57 ± 12% perf-profile.self.cycles-pp.memcpy_erms 1.11 ± 3% -0.4 0.75 perf-profile.self.cycles-pp.copy_user_generic_unrolled 0.50 ± 15% -0.3 0.21 ± 9% perf-profile.self.cycles-pp.io_serial_in 0.82 ± 2% -0.3 0.55 ± 5% perf-profile.self.cycles-pp.___might_sleep 0.71 ± 3% -0.3 0.44 ± 6% perf-profile.self.cycles-pp.entry_SYSCALL_64_after_hwframe 0.73 ± 5% -0.3 0.47 ± 4% perf-profile.self.cycles-pp.copy_user_enhanced_fast_string 0.34 ± 28% -0.3 0.09 ± 14% perf-profile.self.cycles-pp.menu_select 0.38 ± 31% -0.2 0.16 ± 20% perf-profile.self.cycles-pp.ktime_get 0.57 ± 7% -0.2 0.37 ± 5% perf-profile.self.cycles-pp._copy_from_user 0.26 ± 11% -0.2 0.07 perf-profile.self.cycles-pp.cpuidle_enter_state 0.50 ± 7% -0.2 0.33 perf-profile.self.cycles-pp.__might_fault 0.36 ± 5% -0.1 0.26 ± 7% perf-profile.self.cycles-pp.__might_sleep 0.28 ± 2% -0.1 0.19 ± 6% perf-profile.self.cycles-pp._copy_to_user 0.17 ± 9% -0.1 0.08 ± 10% perf-profile.self.cycles-pp.read_tsc 0.23 ± 7% -0.1 0.14 ± 16% perf-profile.self.cycles-pp.__x86_indirect_thunk_rax 0.23 ± 17% -0.1 0.15 ± 10% perf-profile.self.cycles-pp.native_write_msr 0.20 ± 5% -0.1 0.12 ± 10% perf-profile.self.cycles-pp.sigprocmask 0.15 ± 4% -0.1 0.10 ± 14% perf-profile.self.cycles-pp._raw_spin_lock 0.11 ± 17% -0.1 0.06 ± 26% perf-profile.self.cycles-pp._raw_spin_lock_irqsave 0.11 ± 7% -0.0 0.07 ± 7% perf-profile.self.cycles-pp.__set_current_blocked 0.13 ± 6% -0.0 0.08 ± 10% perf-profile.self.cycles-pp.swapcontext@plt 0.10 ± 11% -0.0 0.07 ± 6% perf-profile.self.cycles-pp.hrtimer_interrupt 0.00 +0.1 0.06 ± 9% perf-profile.self.cycles-pp.cexp 0.00 +0.1 0.11 ± 10% perf-profile.self.cycles-pp.memcpy@plt 0.00 +0.1 0.12 ± 11% perf-profile.self.cycles-pp.sqrt 0.00 +0.2 0.16 ± 7% perf-profile.self.cycles-pp.feclearexcept@plt 0.00 +0.2 0.17 ± 8% perf-profile.self.cycles-pp.fetestexcept@plt 0.00 +0.2 0.18 ± 4% perf-profile.self.cycles-pp.__errno_location@plt 0.00 +0.2 0.18 ± 2% perf-profile.self.cycles-pp.fegetround 0.00 +0.2 0.22 ± 9% perf-profile.self.cycles-pp.__errno_location 0.00 +0.3 0.31 ± 14% perf-profile.self.cycles-pp.osq_lock 0.00 +0.3 0.34 ± 5% perf-profile.self.cycles-pp.log2 0.00 +0.4 0.36 ± 4% perf-profile.self.cycles-pp.log 0.00 +0.5 0.47 perf-profile.self.cycles-pp.exp 0.00 +6.3 6.32 ± 2% perf-profile.self.cycles-pp.fetestexcept 0.00 +30.8 30.80 perf-profile.self.cycles-pp.feclearexcept stress-ng.time.percent_of_cpu_this_job_got 8000 +--------------------------------------------------------------------+ 7800 |-+O O O O O O O O O O O O O O O | | O O O O | 7600 |-+ | 7400 |.. .+. .+.. .+. | | +.+..+. + +.+. +.+..+..+.+..+.+..+. +..+ | 7200 |-+ : : | 7000 |-+ : : | 6800 |-+ : : | | : : | 6600 |-+ : : | 6400 |-+ : : | | : : | 6200 |-+ : | 6000 +--------------------------------------------------------------------+ stress-ng.af-alg.ops 60000 +-------------------------------------------------------------------+ | O O O O O O O O O O O O O O O O O O O O O O O O O | 50000 |-+ | | | | | 40000 |-+ | | | 30000 |-+ | | | 20000 |-+ | | + | | :+ | 10000 |-+ : + .+.. .+ | |.. .+. : + +. + .+.. | 0 +-------------------------------------------------------------------+ stress-ng.af-alg.ops_per_sec 40000 +-------------------------------------------------------------------+ | | 35000 |-+O O O O O O O O O O O O O O O O O O | 30000 |-+ O O O O O O O | | | 25000 |-+ | | | 20000 |-+ | | | 15000 |-+ | 10000 |-+ | | | 5000 |-+ | | .+.. | 0 +-------------------------------------------------------------------+ [*] bisect-good sample [O] bisect-bad sample Disclaimer: Results have been estimated based on internal Intel analysis and are provided for informational purposes only. Any difference in system hardware or software design or configuration may affect actual performance. Thanks, Rong Chen

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fe31d0fc13 ("x86/kvm: Handle async page faults directly .."): [ 0.098212] WARNING: CPU: 0 PID: 0 at arch/x86/kernel/kvm.c:315 kvm_guest_init

by kernel test robot

Greetings, 0day kernel testing robot got the below dmesg and the first bad commit is https://git.kernel.org/pub/scm/linux/kernel/git/tglx/devel.git x86/entry commit fe31d0fc13d1d2d13e7c688335861a55ed497440 Author: Andy Lutomirski <luto(a)kernel.org> AuthorDate: Fri Feb 28 10:42:48 2020 -0800 Commit: Thomas Gleixner <tglx(a)linutronix.de> CommitDate: Mon Apr 27 10:51:44 2020 +0200 x86/kvm: Handle async page faults directly through do_page_fault() KVM overloads #PF to indicate two types of not-actually-page-fault events. Right now, the KVM guest code intercepts them by modifying the IDT and hooking the #PF vector. This makes the already fragile fault code even harder to understand, and it also pollutes call traces with async_page_fault and do_async_page_fault for normal page faults. Clean it up by moving the logic into do_page_fault() using a static branch. This gets rid of the platform trap_init override mechanism completely. [ tglx: Fixed up 32bit, removed error code from the async functions and massaged coding style ] Signed-off-by: Andy Lutomirski <luto(a)kernel.org> Signed-off-by: Thomas Gleixner <tglx(a)linutronix.de> 8f55789126 x86/entry: Remove the unused LOCKDEP_SYSEXIT cruft fe31d0fc13 x86/kvm: Handle async page faults directly through do_page_fault() 541826c579 x86/entry: Remove the TRACE_IRQS cruft +--------------------------------------------------+------------+------------+------------+ | | 8f55789126 | fe31d0fc13 | 541826c579 | +--------------------------------------------------+------------+------------+------------+ | boot_successes | 0 | 0 | 0 | | boot_failures | 44 | 11 | 3 | | BUG:unable_to_handle_page_fault_for_address | 43 | 11 | 3 | | Oops:#[##] | 43 | 11 | 3 | | EIP:__lock_acquire | 43 | 11 | 3 | | Kernel_panic-not_syncing:Fatal_exception | 43 | 11 | 3 | | System_halted | 1 | | | | WARNING:at_arch/x86/kernel/kvm.c:#kvm_guest_init | 0 | 11 | 3 | | EIP:kvm_guest_init | 0 | 11 | 3 | +--------------------------------------------------+------------+------------+------------+ If you fix the issue, kindly add following tag Reported-by: kernel test robot <lkp(a)intel.com> [ 0.096462] Int: type 0, pol 0, trig 0, bus 00, IRQ 0f, APIC ID 0, APIC INT 0f [ 0.096867] Using ACPI (MADT) for SMP configuration information [ 0.097200] ACPI: HPET id: 0x8086a201 base: 0xfed00000 [ 0.097505] mapped IOAPIC to ffffb000 (fec00000) [ 0.097949] ------------[ cut here ]------------ [ 0.098212] WARNING: CPU: 0 PID: 0 at arch/x86/kernel/kvm.c:315 kvm_guest_init+0xe0/0x1c9 [ 0.098864] Modules linked in: [ 0.099055] CPU: 0 PID: 0 Comm: swapper Not tainted 5.7.0-rc2-00114-gfe31d0fc13d1d #1 [ 0.099505] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 [ 0.099969] EIP: kvm_guest_init+0xe0/0x1c9 [ 0.100198] Code: 74 0a b8 70 1f 04 c1 e8 3a d0 ff ff b8 04 00 00 00 e8 20 37 e4 fe 84 c0 74 5c 83 3d 88 17 fc c1 00 74 53 e9 02 00 00 00 eb 04 <0f> 0b eb 00 b8 40 17 fc c1 e8 5e 98 e4 fe 89 c3 89 c6 b8 0a 00 00 [ 0.101246] EAX: 00000001 EBX: c22a16c0 ECX: 00000004 EDX: 00000000 [ 0.101595] ESI: c22a16c0 EDI: 00000000 EBP: c1f93f34 ESP: c1f93f58 [ 0.102036] DS: 007b ES: 007b FS: 0000 GS: 0000 SS: ec00 EFLAGS: 00210002 [ 0.102414] CR0: 80050033 CR2: 00000000 CR3: 02290000 CR4: 00000690 [ 0.102763] Call Trace: [ 0.102904] start_kernel+0x4b/0x65f [ 0.103132] ? set_intr_gate+0x37/0x40 [ 0.103347] ? early_idt_handler_common+0x44/0x44 [ 0.103619] i386_start_kernel+0x42/0x44 [ 0.103839] startup_32_smp+0x164/0x168 [ 0.104061] random: get_random_bytes called from init_oops_id+0x23/0x50 with crng_init=0 [ 0.104063] ---[ end trace 5348b3c6a4338041 ]--- [ 0.104777] KVM setup async PF for cpu 0 # HH:MM RESULT GOOD BAD GOOD_BUT_DIRTY DIRTY_NOT_BAD git bisect start ad61002f87334b07fed9943e9f23733d17da7ceb 6a8b55ed4056ea5559ebe4f6a4b247f627870d4c -- git bisect bad e50a530a21d4363ac5cf5dd25121d46aa723a715 # 00:38 B 0 2 18 0 Merge 'linux-review/Bernard-Zhao/kmalloc_index-optimization-add-kmalloc-max-size-check/20200420-091423' into devel-hourly-2020042719 git bisect bad 12ab92a0bfcf61c1dbbffc0663e79f89a8c2514f # 00:56 B 0 2 18 0 Merge 'linux-review/Jon-Derrick/Honoring-Native-AER-DPC-Host-Bridges/20200422-214929' into devel-hourly-2020042719 git bisect bad ba6e013efe4ac75c060f5d1ab5d97c8bd7ed95a6 # 01:16 B 0 2 18 0 Merge 'mac80211/master' into devel-hourly-2020042719 git bisect good 9f2f2ccc4db4a213976613e995393b82b2840151 # 01:37 G 11 0 11 11 Merge 'linux-review/Sascha-Hauer/arm64-defconfig-Enable-Freescale-XGMAC-MDIO/20200426-170931' into devel-hourly-2020042719 git bisect bad ab77eb349e9995434452e1840127fe566593af97 # 01:49 B 0 2 18 0 Merge 'iio/fixes-togreg' into devel-hourly-2020042719 git bisect good fcf7f2c0a76f6dd452245a00491bb5c2d5481cc7 # 02:16 G 10 0 10 10 Merge 'linux-review/Mason-Yang/mtd-spi-nor-macronix-Add-support-for-mx25l512-mx25u512/20200426-125136' into devel-hourly-2020042719 git bisect bad 0e1a6da4f0e923020c50b1ecd1f39e95df1fb149 # 02:31 B 0 1 17 0 Merge 'tglx-devel/x86/entry' into devel-hourly-2020042719 git bisect good 7ffe70783b3fd2e97c6d900affa7393749ff8196 # 03:03 G 10 0 10 10 Merge 'linux-review/Russell-King/net-phy-bcm84881-clear-settings-on-link-down/20200426-121024' into devel-hourly-2020042719 git bisect good 46884bc7e3f7032d3e186529daceccd373295fc7 # 03:20 G 11 0 11 11 Merge 'linux-review/Chirantan-Ekbote/fuse-Mark-fscrypt-ioctls-as-unrestricted/20200426-115535' into devel-hourly-2020042719 git bisect bad 866387c561a776103e999265f060e1adef52e4f6 # 03:51 B 0 2 18 0 x86/entry/64: Reorder idtentries git bisect good cae2d304e8694edd2d990e87088711993bbd78ee # 04:14 G 10 0 10 10 locking/atomics: Flip fallbacks and instrumentation git bisect bad 7de77fa0a2b2c57a0ff36fcad947ba15778dca68 # 04:37 B 0 1 17 0 x86/entry: Mark enter_from_user_mode() noinstr git bisect bad bc65908be288834e437e2854602d249abf59b4f5 # 05:05 B 0 1 17 0 kprobes: Support NOKPROBE_SYMBOL() in modules git bisect bad ed9ef0285e23afd8e4ad73875eae59ac97622d11 # 05:28 B 0 1 17 0 x86/kvm: Sanitize kvm_async_pf_task_wait() git bisect good 1f21ead1d43f09ba63a0de8b91d7a47f49774ce4 # 05:50 G 10 0 10 10 x86/entry/64: Avoid pointless code when CONTEXT_TRACKING=n git bisect bad fe31d0fc13d1d2d13e7c688335861a55ed497440 # 06:09 B 0 6 22 0 x86/kvm: Handle async page faults directly through do_page_fault() git bisect good 8f55789126fe72f44ac7e5e9bbbd90e75f241662 # 06:25 G 10 0 10 10 x86/entry: Remove the unused LOCKDEP_SYSEXIT cruft # first bad commit: [fe31d0fc13d1d2d13e7c688335861a55ed497440] x86/kvm: Handle async page faults directly through do_page_fault() git bisect good 8f55789126fe72f44ac7e5e9bbbd90e75f241662 # 06:30 G 31 0 31 41 x86/entry: Remove the unused LOCKDEP_SYSEXIT cruft # extra tests with debug options git bisect bad fe31d0fc13d1d2d13e7c688335861a55ed497440 # 06:43 B 0 8 24 0 x86/kvm: Handle async page faults directly through do_page_fault() # extra tests on head commit of tglx-devel/x86/entry git bisect bad 541826c5796f8c00230e400f1c4e0dc2849d17bc # 07:12 B 0 1 17 0 x86/entry: Remove the TRACE_IRQS cruft # bad: [541826c5796f8c00230e400f1c4e0dc2849d17bc] x86/entry: Remove the TRACE_IRQS cruft --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/lkp@lists.01.org

2 years

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[drm/i915/gen9] 53b9bd37af: phoronix-test-suite.clpeak.KernelLatency.us 22.5% regression

by kernel test robot

Greeting, FYI, we noticed a 22.5% regression of phoronix-test-suite.clpeak.KernelLatency.us due to commit: commit: 53b9bd37af59d1def99b20707536105857eb9bd0 ("drm/i915/gen9: Clear residual context state on context switch") https://git.kernel.org/cgit/linux/kernel/git/stable/linux-stable.git linux-5.4.y in testcase: phoronix-test-suite on test machine: 4 threads Intel(R) Core(TM) i7-7567U CPU @ 3.50GHz with 32G memory with following parameters: test: clpeak-1.0.1 cpufreq_governor: performance ucode: 0xca test-description: The Phoronix Test Suite is the most comprehensive testing and benchmarking platform available that provides an extensible framework for which new tests can be easily added. test-url: http://www.phoronix-test-suite.com/ If you fix the issue, kindly add following tag Reported-by: kernel test robot <rong.a.chen(a)intel.com> Details are as below: --------------------------------------------------------------------------------------------------> To reproduce: git clone https://github.com/intel/lkp-tests.git cd lkp-tests bin/lkp install job.yaml # job file is attached in this email bin/lkp run job.yaml ========================================================================================= compiler/cpufreq_governor/kconfig/rootfs/tbox_group/test/testcase/ucode: gcc-7/performance/x86_64-lck-7931/clear-x86_64-phoronix-30140/lkp-kbl-nuc1/clpeak-1.0.1/phoronix-test-suite/0xca commit: f58642c1bc ("netfilter: ipset: avoid null deref when IPSET_ATTR_LINENO is present") 53b9bd37af ("drm/i915/gen9: Clear residual context state on context switch") f58642c1bc7946c3 53b9bd37af59d1def99b2070753 ---------------- --------------------------- %stddev %change %stddev \ | \ 24.49 ± 2% +22.5% 30.00 phoronix-test-suite.clpeak.KernelLatency.us 101.56 ± 38% -70.7% 29.74 phoronix-test-suite.time.elapsed_time 101.56 ± 38% -70.7% 29.74 phoronix-test-suite.time.elapsed_time.max 405511 ± 30% -54.3% 185150 phoronix-test-suite.time.minor_page_faults 53.33 ± 2% +4.4% 55.67 phoronix-test-suite.time.percent_of_cpu_this_job_got 47.70 ± 37% -70.2% 14.20 phoronix-test-suite.time.user_time 454369 ± 41% -75.5% 111123 phoronix-test-suite.time.voluntary_context_switches 11.39 ± 2% -6.7% 10.62 ± 6% boot-time.dhcp 591003 ± 3% -11.4% 523381 ± 2% meminfo.Active(file) 53200 ± 50% +159.9% 138245 meminfo.max_used_kB 61.00 ± 19% -38.3% 37.67 ± 2% vmstat.cpu.id 28.00 ± 32% +63.1% 45.67 vmstat.cpu.us 3583 ± 45% +106.2% 7390 ± 5% vmstat.io.bi 1.33 ± 35% +125.0% 3.00 vmstat.procs.r 60.90 ± 20% -24.2 36.70 ± 3% mpstat.cpu.all.idle% 0.89 ± 19% +0.6 1.46 ± 14% mpstat.cpu.all.iowait% 0.20 ± 23% +0.1 0.28 ± 2% mpstat.cpu.all.soft% 8.03 ± 35% +4.7 12.69 ± 2% mpstat.cpu.all.sys% 28.78 ± 32% +18.9 47.66 mpstat.cpu.all.usr% 13077984 ± 54% -54.8% 5908886 ± 43% cpuidle.C1.time 597419 ± 46% -74.3% 153496 ± 15% cpuidle.C1.usage 24140686 ± 20% -72.9% 6543020 ± 20% cpuidle.C1E.time 356666 ± 25% -71.4% 102084 ± 12% cpuidle.C1E.usage 1.55e+08 ± 53% -86.5% 20926680 ± 24% cpuidle.C6.time 262494 ± 49% -76.9% 60562 ± 25% cpuidle.C6.usage 3614603 ± 39% -73.6% 952459 ± 2% cpuidle.POLL.time 409623 ± 42% -74.9% 102932 cpuidle.POLL.usage 79.96 ± 16% +23.4% 98.63 turbostat.Any%C0 1499 ± 30% +57.6% 2363 turbostat.Avg_MHz 38.92 ± 31% +23.0 61.94 turbostat.Busy% 597382 ± 46% -74.3% 153485 ± 15% turbostat.C1 356611 ± 25% -71.4% 102035 ± 12% turbostat.C1E 262458 ± 49% -76.9% 60550 ± 25% turbostat.C6 34.42 ± 27% -17.6 16.77 ± 24% turbostat.C6% 18.75 ± 52% -84.2% 2.96 ± 52% turbostat.CPU%c6 14.41 ± 21% +37.9% 19.87 turbostat.CorWatt 1777243 ± 32% -66.4% 597719 turbostat.IRQ 21.36 ± 14% +27.9% 27.32 turbostat.PkgWatt 123.28 ± 25% +44.0% 177.47 turbostat.Totl%C0 38364 ± 4% -23.5% 29333 ± 7% softirqs.CPU0.RCU 16353 ± 31% -60.7% 6429 ± 6% softirqs.CPU0.SCHED 55438 ± 25% -55.7% 24533 ± 4% softirqs.CPU0.TIMER 38652 ± 7% -25.8% 28672 ± 3% softirqs.CPU1.RCU 17071 ± 29% -58.5% 7091 ± 6% softirqs.CPU1.SCHED 63131 ± 33% -58.6% 26110 ± 7% softirqs.CPU1.TIMER 233404 ± 40% -74.3% 60064 softirqs.CPU2.HI 36812 ± 5% -24.4% 27818 ± 3% softirqs.CPU2.RCU 17331 ± 30% -65.2% 6025 ± 7% softirqs.CPU2.SCHED 52817 ± 26% -51.1% 25847 softirqs.CPU2.TIMER 37680 ± 4% -27.2% 27418 ± 5% softirqs.CPU3.RCU 17232 ± 33% -57.0% 7413 ± 2% softirqs.CPU3.SCHED 54880 ± 31% -48.7% 28163 ± 7% softirqs.CPU3.TIMER 233405 ± 40% -74.3% 60065 softirqs.HI 151510 ± 5% -25.3% 113242 ± 2% softirqs.RCU 67989 ± 31% -60.3% 26959 softirqs.SCHED 226267 ± 28% -53.7% 104655 softirqs.TIMER 147753 ± 3% -11.4% 130854 ± 2% proc-vmstat.nr_active_file 386270 +4.2% 402302 proc-vmstat.nr_dirty_background_threshold 3804020 -2.4% 3713749 proc-vmstat.nr_dirty_threshold 803734 -3.1% 778927 proc-vmstat.nr_file_pages 452742 -1.6% 445477 proc-vmstat.nr_inactive_file 10099 +2.1% 10308 proc-vmstat.nr_kernel_stack 2628 +1.8% 2675 proc-vmstat.nr_page_table_pages 82010 -5.4% 77547 proc-vmstat.nr_slab_reclaimable 24816 -3.2% 24014 proc-vmstat.nr_slab_unreclaimable 780.67 -2.3% 763.00 proc-vmstat.nr_unevictable 147753 ± 3% -11.4% 130854 ± 2% proc-vmstat.nr_zone_active_file 452742 -1.6% 445477 proc-vmstat.nr_zone_inactive_file 780.67 -2.3% 763.00 proc-vmstat.nr_zone_unevictable 5659020 ± 6% -46.0% 3058187 proc-vmstat.numa_hit 5659020 ± 6% -46.0% 3058187 proc-vmstat.numa_local 47921 ± 3% -16.2% 40136 ± 2% proc-vmstat.pgactivate 5867768 ± 7% -44.8% 3238245 proc-vmstat.pgalloc_normal 8000575 ± 5% -44.9% 4409621 proc-vmstat.pgfault 5730760 ± 7% -45.9% 3102373 proc-vmstat.pgfree 285530 ± 4% -23.9% 217222 ± 4% proc-vmstat.pgpgin 49.48 ± 70% -49.5 0.00 perf-profile.calltrace.cycles-pp.secondary_startup_64 40.07 ± 70% -40.1 0.00 perf-profile.calltrace.cycles-pp.intel_idle.cpuidle_enter_state.cpuidle_enter.do_idle.cpu_startup_entry 36.60 ± 79% -36.6 0.00 perf-profile.calltrace.cycles-pp.start_secondary.secondary_startup_64 36.59 ± 79% -36.6 0.00 perf-profile.calltrace.cycles-pp.cpu_startup_entry.start_secondary.secondary_startup_64 36.51 ± 79% -36.5 0.00 perf-profile.calltrace.cycles-pp.do_idle.cpu_startup_entry.start_secondary.secondary_startup_64 35.12 ± 79% -35.1 0.00 perf-profile.calltrace.cycles-pp.cpuidle_enter.do_idle.cpu_startup_entry.start_secondary.secondary_startup_64 34.92 ± 79% -34.9 0.00 perf-profile.calltrace.cycles-pp.cpuidle_enter_state.cpuidle_enter.do_idle.cpu_startup_entry.start_secondary 6.65 ± 72% -6.6 0.00 perf-profile.calltrace.cycles-pp.entry_SYSCALL_64_after_hwframe 6.47 ± 72% -6.5 0.00 perf-profile.calltrace.cycles-pp.do_syscall_64.entry_SYSCALL_64_after_hwframe 4.00 ± 72% -4.0 0.00 perf-profile.calltrace.cycles-pp.poll_idle.cpuidle_enter_state.cpuidle_enter.do_idle.cpu_startup_entry 49.48 ± 70% -49.5 0.00 perf-profile.children.cycles-pp.secondary_startup_64 49.48 ± 70% -49.5 0.00 perf-profile.children.cycles-pp.cpu_startup_entry 49.37 ± 70% -49.4 0.00 perf-profile.children.cycles-pp.do_idle 47.50 ± 70% -47.5 0.00 perf-profile.children.cycles-pp.cpuidle_enter 47.38 ± 70% -47.4 0.00 perf-profile.children.cycles-pp.cpuidle_enter_state 40.10 ± 70% -40.1 0.00 perf-profile.children.cycles-pp.intel_idle 36.60 ± 79% -36.6 0.00 perf-profile.children.cycles-pp.start_secondary 7.29 ± 72% -7.3 0.00 perf-profile.children.cycles-pp.entry_SYSCALL_64_after_hwframe 7.12 ± 71% -7.1 0.00 perf-profile.children.cycles-pp.do_syscall_64 4.03 ± 72% -4.0 0.00 perf-profile.children.cycles-pp.poll_idle 40.10 ± 70% -40.1 0.00 perf-profile.self.cycles-pp.intel_idle 3.76 ± 71% -3.8 0.00 perf-profile.self.cycles-pp.poll_idle 695942 ± 40% -74.6% 176670 interrupts.125:IR-PCI-MSI.32768-edge.i915 34054 ± 4% -17.3% 28167 ± 9% interrupts.127:IR-PCI-MSI.376832-edge.ahci[0000:00:17.0] 1050 ± 28% -49.8% 527.33 ± 39% interrupts.128:IR-PCI-MSI.520192-edge.eth0 222197 ± 4% -41.3% 130456 interrupts.CAL:Function_call_interrupts 55148 -39.6% 33319 ± 2% interrupts.CPU0.CAL:Function_call_interrupts 194140 ± 36% -68.0% 62087 interrupts.CPU0.LOC:Local_timer_interrupts 1863 ± 88% -97.8% 41.33 ± 89% interrupts.CPU0.NMI:Non-maskable_interrupts 1863 ± 88% -97.8% 41.33 ± 89% interrupts.CPU0.PMI:Performance_monitoring_interrupts 6030 ± 17% -32.2% 4089 ± 7% interrupts.CPU0.RES:Rescheduling_interrupts 5253 ± 37% -73.9% 1369 ± 23% interrupts.CPU0.TLB:TLB_shootdowns 34054 ± 4% -17.3% 28167 ± 9% interrupts.CPU1.127:IR-PCI-MSI.376832-edge.ahci[0000:00:17.0] 56244 ± 8% -42.8% 32144 ± 2% interrupts.CPU1.CAL:Function_call_interrupts 194206 ± 36% -68.0% 62051 interrupts.CPU1.LOC:Local_timer_interrupts 1228 ± 67% -96.7% 41.00 ± 82% interrupts.CPU1.NMI:Non-maskable_interrupts 1228 ± 67% -96.7% 41.00 ± 82% interrupts.CPU1.PMI:Performance_monitoring_interrupts 4247 ± 13% -41.7% 2477 ± 5% interrupts.CPU1.RES:Rescheduling_interrupts 2396 ± 58% -76.5% 562.33 ± 30% interrupts.CPU1.TLB:TLB_shootdowns 695942 ± 40% -74.6% 176670 interrupts.CPU2.125:IR-PCI-MSI.32768-edge.i915 1050 ± 28% -49.8% 527.33 ± 39% interrupts.CPU2.128:IR-PCI-MSI.520192-edge.eth0 54618 -37.7% 34042 ± 4% interrupts.CPU2.CAL:Function_call_interrupts 194173 ± 36% -68.0% 62105 interrupts.CPU2.LOC:Local_timer_interrupts 1547 ± 73% -97.3% 41.00 ± 77% interrupts.CPU2.NMI:Non-maskable_interrupts 1547 ± 73% -97.3% 41.00 ± 77% interrupts.CPU2.PMI:Performance_monitoring_interrupts 9129 ± 17% -48.5% 4701 ± 6% interrupts.CPU2.RES:Rescheduling_interrupts 1957 ± 60% -91.0% 175.33 ± 37% interrupts.CPU2.TLB:TLB_shootdowns 56187 ± 5% -44.9% 30951 ± 6% interrupts.CPU3.CAL:Function_call_interrupts 194173 ± 36% -68.0% 62079 interrupts.CPU3.LOC:Local_timer_interrupts 947.00 ± 67% -95.8% 39.33 ± 85% interrupts.CPU3.NMI:Non-maskable_interrupts 947.00 ± 67% -95.8% 39.33 ± 85% interrupts.CPU3.PMI:Performance_monitoring_interrupts 5359 ± 32% -93.4% 353.67 ± 46% interrupts.CPU3.TLB:TLB_shootdowns 776694 ± 36% -68.0% 248323 interrupts.LOC:Local_timer_interrupts 5586 ± 72% -97.1% 162.67 ± 83% interrupts.NMI:Non-maskable_interrupts 5586 ± 72% -97.1% 162.67 ± 83% interrupts.PMI:Performance_monitoring_interrupts 24885 ± 7% -36.2% 15873 ± 7% interrupts.RES:Rescheduling_interrupts 14966 ± 11% -83.6% 2461 ± 9% interrupts.TLB:TLB_shootdowns 2014 ± 46% +58.2% 3187 ± 34% sched_debug.cfs_rq:/.load_avg.max 33405 ± 40% -58.6% 13826 ± 9% sched_debug.cfs_rq:/.min_vruntime.avg 37077 ± 38% -51.2% 18080 ± 26% sched_debug.cfs_rq:/.min_vruntime.max 29779 ± 42% -60.7% 11702 ± 6% sched_debug.cfs_rq:/.min_vruntime.min 1489 ± 10% +38.2% 2058 ± 14% sched_debug.cfs_rq:/.util_avg.max 94180 ± 5% -69.7% 28544 ± 69% sched_debug.cpu.avg_idle.min 62749 ± 44% -65.5% 21617 ± 5% sched_debug.cpu.clock.avg 62750 ± 44% -65.5% 21623 ± 5% sched_debug.cpu.clock.max 62748 ± 44% -65.6% 21612 ± 5% sched_debug.cpu.clock.min 0.72 ± 20% +490.0% 4.26 ± 45% sched_debug.cpu.clock.stddev 61991 ± 44% -65.5% 21373 ± 5% sched_debug.cpu.clock_task.avg 62297 ± 44% -65.4% 21536 ± 5% sched_debug.cpu.clock_task.max 61557 ± 44% -65.7% 21140 ± 5% sched_debug.cpu.clock_task.min 297.83 ± 30% -43.4% 168.59 sched_debug.cpu.clock_task.stddev 2455 ± 33% +43.8% 3529 ± 10% sched_debug.cpu.curr->pid.avg 0.00 ± 31% -51.7% 0.00 ± 38% sched_debug.cpu.next_balance.stddev 203929 ± 46% -67.6% 66070 ± 7% sched_debug.cpu.nr_switches.avg 258658 ± 46% -68.4% 81856 ± 4% sched_debug.cpu.nr_switches.max 155789 ± 46% -67.3% 51018 ± 8% sched_debug.cpu.nr_switches.min 0.17 ±108% +250.0% 0.58 ± 53% sched_debug.cpu.nr_uninterruptible.avg 60.22 ± 56% -70.7% 17.67 ± 49% sched_debug.cpu.nr_uninterruptible.max -78.78 -83.5% -13.00 sched_debug.cpu.nr_uninterruptible.min 54.22 ± 53% -77.4% 12.27 ± 41% sched_debug.cpu.nr_uninterruptible.stddev 1225073 ± 70% -99.9% 749.58 ± 36% sched_debug.cpu.sched_count.avg 1935922 ± 72% -99.9% 1573 ± 36% sched_debug.cpu.sched_count.max 519540 ± 79% -99.9% 535.76 ± 41% sched_debug.cpu.sched_count.stddev 68013 ± 70% -99.4% 428.67 ± 39% sched_debug.cpu.ttwu_count.avg 117399 ± 70% -99.3% 848.33 ± 51% sched_debug.cpu.ttwu_count.max 30185 ± 70% -99.0% 305.10 ± 62% sched_debug.cpu.ttwu_count.stddev 18430 ± 69% -98.5% 277.08 ± 43% sched_debug.cpu.ttwu_local.avg 41983 ± 69% -98.7% 534.33 ± 48% sched_debug.cpu.ttwu_local.max 13660 ± 68% -98.6% 186.19 ± 63% sched_debug.cpu.ttwu_local.stddev 62747 ± 44% -65.6% 21609 ± 5% sched_debug.cpu_clk 62538 ± 44% -65.7% 21422 ± 5% sched_debug.ktime 0.02 ±141% +249.5% 0.06 ± 22% sched_debug.rt_rq:/.rt_time.avg 62766 ± 44% -65.6% 21619 ± 5% sched_debug.sched_clk 53.07 ± 25% -37.9% 32.94 perf-stat.i.MPKI 1.429e+09 ± 27% +52.1% 2.173e+09 perf-stat.i.branch-instructions 25378470 ± 48% +113.2% 54106012 perf-stat.i.branch-misses 41939756 ± 26% +38.8% 58213548 perf-stat.i.cache-misses 1.916e+08 ± 25% +47.4% 2.823e+08 ± 2% perf-stat.i.cache-references 13953 ± 10% +17.0% 16320 perf-stat.i.context-switches 1.39 ± 16% -22.4% 1.08 perf-stat.i.cpi 5.98e+09 ± 31% +57.8% 9.436e+09 perf-stat.i.cpu-cycles 253.07 ± 45% +98.8% 503.12 ± 6% perf-stat.i.cpu-migrations 0.22 ± 38% -0.1 0.10 perf-stat.i.dTLB-load-miss-rate% 1478975 ± 21% +34.7% 1991993 perf-stat.i.dTLB-load-misses 1.516e+09 ± 24% +42.7% 2.163e+09 perf-stat.i.dTLB-loads 0.14 ± 11% -0.0 0.11 perf-stat.i.dTLB-store-miss-rate% 565610 ± 24% +34.5% 760493 perf-stat.i.dTLB-store-misses 6.417e+08 ± 17% +31.0% 8.404e+08 perf-stat.i.dTLB-stores 611337 ± 19% +29.3% 790163 ± 2% perf-stat.i.iTLB-load-misses 5.981e+09 ± 26% +49.3% 8.931e+09 perf-stat.i.instructions 1.82 ± 51% +157.8% 4.70 perf-stat.i.major-faults 1.68 ± 19% +0.8 2.49 perf-stat.overall.branch-miss-rate% 21.83 -1.2 20.63 ± 2% perf-stat.overall.cache-miss-rate% 0.99 ± 4% +6.9% 1.06 perf-stat.overall.cpi 141.04 ± 4% +14.9% 162.09 perf-stat.overall.cycles-between-cache-misses 0.10 ± 3% -0.0 0.09 perf-stat.overall.dTLB-load-miss-rate% 14.55 ± 6% +1.2 15.77 ± 2% perf-stat.overall.iTLB-load-miss-rate% 9694 ± 9% +16.7% 11311 ± 2% perf-stat.overall.instructions-per-iTLB-miss 1.01 ± 4% -6.6% 0.95 perf-stat.overall.ipc 1.413e+09 ± 26% +50.9% 2.132e+09 perf-stat.ps.branch-instructions 25047514 ± 47% +112.0% 53091697 perf-stat.ps.branch-misses 41461384 ± 25% +37.8% 57118869 perf-stat.ps.cache-misses 1.894e+08 ± 24% +46.3% 2.77e+08 ± 2% perf-stat.ps.cache-references 13813 ± 9% +15.9% 16012 perf-stat.ps.context-switches 5.91e+09 ± 30% +56.7% 9.258e+09 perf-stat.ps.cpu-cycles 249.80 ± 45% +97.7% 493.74 ± 6% perf-stat.ps.cpu-migrations 1462753 ± 20% +33.6% 1954515 perf-stat.ps.dTLB-load-misses 1.499e+09 ± 23% +41.6% 2.122e+09 perf-stat.ps.dTLB-loads 6.349e+08 ± 16% +29.9% 8.246e+08 perf-stat.ps.dTLB-stores 3524622 ± 12% +17.5% 4140201 perf-stat.ps.iTLB-loads 5.913e+09 ± 25% +48.2% 8.763e+09 perf-stat.ps.instructions 1.80 ± 50% +156.4% 4.61 perf-stat.ps.major-faults 5.49e+11 ± 21% -50.6% 2.71e+11 perf-stat.total.instructions phoronix-test-suite.clpeak.KernelLatency.us 35 +----------------------------------------------------------------------+ | | 30 |-+ O O O O | | O O | 25 |-+ +...+ +...+ + + + + | | : : : : : : : + : | 20 |:+ : : : : : : : : : : : : : :| |: : : : : : : : : : : : : : : :| 15 |-: : : : : : : : : : : : : : : : | | : : : : : : : : : : : : : : : : | 10 |-: : : : : : : : : : : : : : : : | | : : : : : : : : : : : : : : : : | 5 |-+: : : : : : : : : : : : : : : : | | : : : : : : : : | 0 +----------------------------------------------------------------------+ [*] bisect-good sample [O] bisect-bad sample Disclaimer: Results have been estimated based on internal Intel analysis and are provided for informational purposes only. Any difference in system hardware or software design or configuration may affect actual performance. Thanks, Rong Chen

2 years

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ac2231a520 ("x86/entry: Use idtentry for interrupts"): WARNING: CPU: 0 PID: 0 at kernel/locking/lockdep.c:3673 lockdep_hardirqs_on_prepare

by kernel test robot

Greetings, 0day kernel testing robot got the below dmesg and the first bad commit is https://git.kernel.org/pub/scm/linux/kernel/git/tglx/devel.git x86/entry commit ac2231a5204e296d2035653634b5ed3941245813 Author: Thomas Gleixner <tglx(a)linutronix.de> AuthorDate: Tue Feb 25 23:47:23 2020 +0100 Commit: Thomas Gleixner <tglx(a)linutronix.de> CommitDate: Mon Apr 27 10:52:30 2020 +0200 x86/entry: Use idtentry for interrupts Use IDTENTRY_IRQ for interrupts. Remove the existing stub code and let the IDTENTRY machinery emit it automatically. Signed-off-by: Thomas Gleixner <tglx(a)linutronix.de> f0afa37e21 x86/entry: Add IRQENTRY_IRQ macro ac2231a520 x86/entry: Use idtentry for interrupts 541826c579 x86/entry: Remove the TRACE_IRQS cruft +------------------------------------------------------------------+------------+------------+------------+ | | f0afa37e21 | ac2231a520 | 541826c579 | +------------------------------------------------------------------+------------+------------+------------+ | boot_successes | 21 | 0 | 0 | | boot_failures | 16 | 11 | 3 | | WARNING:at_arch/x86/entry/common.c:#idtentry_exit_pf | 15 | | | | RIP:idtentry_exit_pf | 15 | | | | WARNING:at_arch/x86/entry/common.c:#__prepare_exit_to_usermode | 15 | | | | RIP:__prepare_exit_to_usermode | 15 | | | | WARNING:at_mm/usercopy.c:#usercopy_warn | 1 | | | | RIP:usercopy_warn | 1 | | | | WARNING:at_kernel/locking/lockdep.c:#lockdep_hardirqs_on_prepare | 0 | 10 | 3 | | RIP:lockdep_hardirqs_on_prepare | 0 | 10 | 3 | | RIP:_raw_spin_unlock_irqrestore | 0 | 10 | 3 | | RIP:__do_softirq | 0 | 1 | | | BUG:kernel_hang_in_early-boot_stage | 0 | 1 | | +------------------------------------------------------------------+------------+------------+------------+ If you fix the issue, kindly add following tag Reported-by: kernel test robot <lkp(a)intel.com> [ 8.240385] per task-struct memory footprint: 1920 bytes [ 8.284683] ACPI: Core revision 20200326 [ 8.647473] clocksource: hpet: mask: 0xffffffff max_cycles: 0xffffffff, max_idle_ns: 19112604467 ns [ 8.686624] ------------[ cut here ]------------ [ 8.689777] DEBUG_LOCKS_WARN_ON(current->hardirq_context) [ 8.702170] WARNING: CPU: 0 PID: 0 at kernel/locking/lockdep.c:3673 lockdep_hardirqs_on_prepare+0x107/0x170 [ 8.705353] Modules linked in: [ 8.705898] CPU: 0 PID: 0 Comm: swapper/0 Not tainted 5.7.0-rc2-00220-gac2231a5204e2 #1 [ 8.707737] RIP: 0010:lockdep_hardirqs_on_prepare+0x107/0x170 [ 8.708803] Code: 00 00 eb de e8 da c4 8e 01 85 c0 74 d5 8b 15 b0 ef 30 03 85 d2 75 cb 48 c7 c6 4e 81 94 a5 48 c7 c7 f9 23 93 a5 e8 59 01 f9 ff <0f> 0b eb b4 e8 b0 c4 8e 01 85 c0 74 ab 44 8b 05 85 ef 30 03 45 85 [ 8.712574] RSP: 0000:ffff9ab0c0003e68 EFLAGS: 00010082 [ 8.713672] RAX: 0000000000000000 RBX: ffff9ab0c0003e98 RCX: 00000000ffffffff [ 8.715054] RDX: ffffffffa5e7b8c0 RSI: 0000000000000000 RDI: ffffffffa2faa2fa [ 8.716488] RBP: ffff9ab0c0003e70 R08: 0000000000000000 R09: 0000000000000000 [ 8.717992] R10: 0000000000000000 R11: 7261683e2d746e65 R12: 0000000000000000 [ 8.719438] R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 [ 8.721044] FS: 0000000000000000(0000) GS:ffff89f4b7c00000(0000) knlGS:0000000000000000 [ 8.722689] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 8.724033] CR2: 0000000000007000 CR3: 0000000224272000 CR4: 00000000000006b0 [ 8.725539] Call Trace: [ 8.726026] <IRQ> [ 8.750459] idtentry_exit+0x4d/0xa0 [ 8.758799] asm_common_interrupt+0x78/0x80 [ 8.759392] RIP: 0010:__do_softirq+0x9c/0x46d [ 8.759920] Code: 83 80 5c 0c 00 00 01 c7 45 bc 0a 00 00 00 44 89 75 d4 48 c7 c0 80 de 02 00 65 66 c7 00 00 00 e8 3a fc 42 fe fb b8 ff ff ff ff <0f> bc 45 d4 83 c0 01 89 45 d0 0f 84 33 01 00 00 49 c7 c7 00 51 e0 [ 8.762012] RSP: 0000:ffff9ab0c0003f48 EFLAGS: 00000206 [ 8.762621] RAX: 00000000ffffffff RBX: ffffffffa5e7b8c0 RCX: 0000000000000002 [ 8.763455] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffffffffa4c00096 [ 8.764250] RBP: ffff9ab0c0003fa8 R08: 0000000000000000 R09: 0000000000000000 [ 8.765379] R10: 0000000000000001 R11: 0000000000000000 R12: 0000000000000030 [ 8.775571] R13: 0000000000000000 R14: 0000000000000002 R15: 0000000000000000 [ 8.777220] ? __do_softirq+0x96/0x46d [ 8.778036] ? __do_softirq+0x96/0x46d [ 8.784267] irq_exit_rcu+0x9e/0xa0 [ 8.785172] common_interrupt+0x6c/0x110 [ 8.785992] asm_common_interrupt+0x5a/0x80 [ 8.789077] </IRQ> [ 8.789551] RIP: 0010:_raw_spin_unlock_irqrestore+0x2e/0x50 [ 8.790803] Code: 41 54 53 48 89 f3 48 8b 75 08 49 89 fc 48 83 c7 18 e8 46 5e 70 fe 4c 89 e7 e8 1e a9 70 fe f6 c7 02 74 13 e8 e4 7b 79 fe 53 9d <65> ff 0d 53 1e 78 5b 5b 41 5c 5d c3 53 9d e8 df 7a 79 fe eb eb 66 [ 8.794394] RSP: 0000:ffffffffa5e03e18 EFLAGS: 00000246 [ 8.795397] RAX: 0000000000000507 RBX: 0000000000000246 RCX: 0000000000000006 [ 8.796885] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffffffffa48980ec [ 8.798211] RBP: ffffffffa5e03e28 R08: 0000000000000000 R09: 0000000000000000 [ 8.799644] R10: 0000000000000001 R11: 0000000000000000 R12: ffff89f4b6d9d8a8 [ 8.801163] R13: 0000000000000000 R14: ffff89f4b6d9d9d8 R15: ffff89f4b6d9d8a8 [ 8.802703] ? _raw_spin_unlock_irqrestore+0x2c/0x50 [ 8.803801] __setup_irq+0x46c/0x7a0 [ 8.804513] request_threaded_irq+0xf6/0x160 [ 8.830887] hpet_time_init+0x2c/0x49 [ 8.831769] x86_late_time_init+0x10/0x1d [ 8.832581] start_kernel+0x46b/0x515 [ 8.833511] x86_64_start_reservations+0x24/0x26 [ 8.834494] x86_64_start_kernel+0x74/0x77 [ 8.836741] secondary_startup_64+0xa4/0xb0 [ 8.837291] irq event stamp: 1293 [ 8.837723] hardirqs last enabled at (1292): [<ffffffffa4c00096>] __do_softirq+0x96/0x46d [ 8.838757] hardirqs last disabled at (1293): [<ffffffffa4a00bd0>] asm_common_interrupt+0x10/0x80 [ 8.839901] softirqs last enabled at (1290): [<ffffffffa2f3418c>] _local_bh_enable+0x1c/0x30 [ 8.840911] softirqs last disabled at (1291): [<ffffffffa2f34eee>] irq_exit_rcu+0x9e/0xa0 [ 8.841883] ---[ end trace f9ed5b516f1dac13 ]--- [ 8.844777] APIC: Switch to symmetric I/O mode setup # HH:MM RESULT GOOD BAD GOOD_BUT_DIRTY DIRTY_NOT_BAD git bisect start 5ac88bc7fffbe2582b31ffad0e27a94dec766b04 6a8b55ed4056ea5559ebe4f6a4b247f627870d4c -- git bisect bad 1faa9d201a6f7ea5747d1bbc3037dbedc644f1f2 # 10:58 B 0 15 31 0 Merge 'linux-review/Oscar-Carter/staging-vt6656-Check-the-return-value-of-vnt_control_out_-calls/20200427-170739' into devel-catchup-202004271849 git bisect bad 9a039eb8b5cd615364dd8850c6f9d1ea580a5a11 # 10:59 B 0 16 32 0 Merge 'linux-review/Oscar-Carter/Refactor-the-vnt_rf_table_download-function/20200427-175148' into devel-catchup-202004271849 git bisect good d80b24036585d42a3f42976605c9b49788eea622 # 11:05 G 10 0 0 3 Merge 'linux-review/Jonathan-Bakker/phy-samsung-s5pv210-usb2-Add-delay-after-reset/20200427-182656' into devel-catchup-202004271849 git bisect good df99338d56a83dd0fac7c843e15adbb62751f7de # 11:05 G 10 0 0 1 Merge 'linux-platform-drivers-x86/for-next' into devel-catchup-202004271849 git bisect good f1ce408c1571061f0075ad4d62126f9d21c5c94f # 11:05 G 10 0 0 1 Merge 'linux-review/Eric-W-Biederman/Please-pull-proc_flush_pid-fix-for-v5-7-rc3/20200427-181748' into devel-catchup-202004271849 git bisect bad b742e3d312effe4c9a9e01fcc0565052cf438ae4 # 11:06 B 0 11 27 0 Merge 'tglx-devel/x86/entry' into devel-catchup-202004271849 git bisect good 866387c561a776103e999265f060e1adef52e4f6 # 11:06 G 10 0 0 1 x86/entry/64: Reorder idtentries git bisect good 2d16be350916a51ca06c9a063a62e7e61c246443 # 11:06 G 10 0 0 1 x86/traps: Split int3 handler up git bisect good 75de7edf04d48ebfa867d7d3d4a325ff029e5330 # 11:19 G 10 0 1 4 x86/entry: Remove the transition leftovers git bisect bad be2d3da5d758726d0072560fb7b112b967c6cb6d # 11:19 B 0 10 27 1 x86/entry: Convert SMP system vectors to IDTENTRY_SYSVEC git bisect good 06e4f83c66c17bc933c75c9a839c446631fcfcb6 # 11:26 G 10 0 0 4 x86/entry/64: Add ability to switch to IRQ stacks in idtentry git bisect bad ac2231a5204e296d2035653634b5ed3941245813 # 11:26 B 0 5 21 0 x86/entry: Use idtentry for interrupts git bisect good f0afa37e21a62e7145cde4dbc190a0c5a22e0b1b # 12:14 G 10 0 4 4 x86/entry: Add IRQENTRY_IRQ macro # first bad commit: [ac2231a5204e296d2035653634b5ed3941245813] x86/entry: Use idtentry for interrupts git bisect good f0afa37e21a62e7145cde4dbc190a0c5a22e0b1b # 12:49 G 30 0 11 15 x86/entry: Add IRQENTRY_IRQ macro # extra tests with debug options git bisect bad ac2231a5204e296d2035653634b5ed3941245813 # 13:25 B 0 1 17 0 x86/entry: Use idtentry for interrupts # extra tests on head commit of tglx-devel/x86/entry git bisect bad 541826c5796f8c00230e400f1c4e0dc2849d17bc # 14:14 B 0 1 17 0 x86/entry: Remove the TRACE_IRQS cruft # bad: [541826c5796f8c00230e400f1c4e0dc2849d17bc] x86/entry: Remove the TRACE_IRQS cruft --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/lkp@lists.01.org

2 years

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Re: [mm/debug] fa6726c1e7: kernel_BUG_at_include/linux/mm.h

by Christophe Leroy

Le 28/04/2020 à 04:51, Qian Cai a écrit : > > >> On Apr 27, 2020, at 10:35 PM, Anshuman Khandual <Anshuman.Khandual(a)arm.com> wrote: >> >> Letting CONFIG_DEBUG_VM_PGTABLE enabled via CONFIG_EXPERT for unsupported >> platforms i.e without ARCH_HAS_DEBUG_VM_PGTABLE, was a conscious decision >> meant to expand it's adaptability and coverage without requiring any code >> (i.e Kconfig) change. The easier it is to enable the test on unsupported >> platforms right now, more folks are likely to try it out thus increasing >> it's probability to get fixed on those platforms. That is a valid enough >> reason to have CONFIG_EXPERT based enablement method, IMHO. Also even with >> CONFIG_EXPERT set, CONFIG_DEBUG_VM_PGTABLE does not get enabled by default >> automatically. > > No, I am talking about PAE. There is a distinction between known broken that nobody cares (like arm32) and in-progress/unknown status (like s390). > > Also, it is not very nice to introduce regressions for robots when testing PAE because they always select CONFIG__EXPERT and CONFIG_DEBUG_VM. > Having CONFIG_EXPERT and CONFIG_DEBUG_VM is not enough to get CONFIG_DEBUG_VM_PGTABLE set to yes. By default, CONFIG_DEBUG_VM_PGTABLE is set to no when ARCH_HAS_DEBUG_VM_PGTABLE is not set. Christophe

2 years

2
2
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Re: [mm/debug] fa6726c1e7: kernel_BUG_at_include/linux/mm.h

by Anshuman Khandual

On 04/28/2020 08:21 AM, Qian Cai wrote: > > >> On Apr 27, 2020, at 10:35 PM, Anshuman Khandual <Anshuman.Khandual(a)arm.com> wrote: >> >> Letting CONFIG_DEBUG_VM_PGTABLE enabled via CONFIG_EXPERT for unsupported >> platforms i.e without ARCH_HAS_DEBUG_VM_PGTABLE, was a conscious decision >> meant to expand it's adaptability and coverage without requiring any code >> (i.e Kconfig) change. The easier it is to enable the test on unsupported >> platforms right now, more folks are likely to try it out thus increasing >> it's probability to get fixed on those platforms. That is a valid enough >> reason to have CONFIG_EXPERT based enablement method, IMHO. Also even with >> CONFIG_EXPERT set, CONFIG_DEBUG_VM_PGTABLE does not get enabled by default >> automatically. > > No, I am talking about PAE. There is a distinction between known broken that nobody cares (like arm32) and in-progress/unknown status (like s390). > > Also, it is not very nice to introduce regressions for robots when testing PAE because they always select CONFIG__EXPERT and CONFIG_DEBUG_VM. Okay, will add X86_PAE to the explicitly disabled list along with IA64 and ARM. ---- From: Anshuman Khandual <anshuman.khandual(a)arm.com> Date: Tue, 28 Apr 2020 04:30:04 +0100 Subject: [PATCH 3/3] mm/debug/pgtable: Completely disable X86_PAE Completely disable X86_PAE, even via CONFIG_EXPERT. Signed-off-by: Anshuman Khandual <anshuman.khandual(a)arm.com> --- lib/Kconfig.debug | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/lib/Kconfig.debug b/lib/Kconfig.debug index 6a492e32579a..79e097a2285f 100644 --- a/lib/Kconfig.debug +++ b/lib/Kconfig.debug @@ -697,7 +697,7 @@ config DEBUG_VM_PGFLAGS config DEBUG_VM_PGTABLE bool "Debug arch page table for semantics compliance" depends on MMU - depends on !IA64 && !ARM + depends on !IA64 && !ARM && !X86_PAE depends on ARCH_HAS_DEBUG_VM_PGTABLE || EXPERT default y if ARCH_HAS_DEBUG_VM_PGTABLE && DEBUG_VM help -- Hello Andrew/Stephen, Could you please fold the above patch in linux-next. Also please do let me know if I should respin the series as well. Thank you. - Anshuman

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Re: [mm/debug] fa6726c1e7: kernel_BUG_at_include/linux/mm.h

by Anshuman Khandual

On 04/28/2020 07:35 AM, Qian Cai wrote: > > >> On Apr 27, 2020, at 9:49 PM, Anshuman Khandual <Anshuman.Khandual(a)arm.com> wrote: >> >> This is an unsupported (enabled via CONFIG_EXPERT) X86 platform (CONFIG_X86_PAE) >> and is known to fail. The latest (V17) patch had moved the test invocation into >> a late_initcall() per Linus thus pushing down any possible failures (like this) >> after early boot. Please ignore this report. >> >> Apart from this X86_PAE based config, no other platform failures have reported >> so far. Assuming that this test robot does have a good platform coverage, the >> CONFIG_EXPERT method of enabling CONFIG_DEBUG_VM_PGTABLE should help in getting >> more platform coverage for this test. > > This sounds really sloppy. Why can’t we make it impossible to select this combination if nobody is willing to fix it? Letting CONFIG_DEBUG_VM_PGTABLE enabled via CONFIG_EXPERT for unsupported platforms i.e without ARCH_HAS_DEBUG_VM_PGTABLE, was a conscious decision meant to expand it's adaptability and coverage without requiring any code (i.e Kconfig) change. The easier it is to enable the test on unsupported platforms right now, more folks are likely to try it out thus increasing it's probability to get fixed on those platforms. That is a valid enough reason to have CONFIG_EXPERT based enablement method, IMHO. Also even with CONFIG_EXPERT set, CONFIG_DEBUG_VM_PGTABLE does not get enabled by default automatically.

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