FYI, we noticed the following commit: commit: 08d85f3ea99f1eeafc4e8507936190e86a16ee8c ("irqdomain: Avoid activating interrupts more than once") https://git.kernel.org/pub/scm/linux/kernel/git/tip/tip.git irq/urgent in testcase: hackbench with following parameters: cpuset.mems: 0-$((nr_node-1)) cpuset.cpus: 0-$((nr_cpu-1)) nr_threads: 1600% mode: threads ipc: pipe cpufreq_governor: performance test-description: Hackbench is both a benchmark and a stress test for the Linux kernel scheduler. test-url: https://github.com/linux-test-project/ltp/blob/master/testcases/kernel/sched/cfs-scheduler/hackbench.c on test machine: 32 threads Intel(R) Xeon(R) CPU E5-2680 0 @ 2.70GHz with 32G memory caused below changes (please refer to attached dmesg/kmsg for entire log/backtrace): +--------------------------------------------------------------------------------+-----------+------------+ | | v4.10-rc6 | 08d85f3ea9 | +--------------------------------------------------------------------------------+-----------+------------+ | boot_successes | 270 | 0 | | boot_failures | 112 | 4 | | invoked_oom-killer:gfp_mask=0x | 79 | | | Mem-Info | 79 | | | Kernel_panic-not_syncing:Out_of_memory_and_no_killable_processes | 78 | | | BUG:kernel_reboot-without-warning_in_test_stage | 31 | | | INFO:creating/lkp/benchmarks/ltp/output_directory | 2 | | | INFO:creating/lkp/benchmarks/ltp/results_directory | 2 | | | INFO:ltp-pan_reported_all_tests_PASS | 1 | | | INFO:ltp-pan_reported_some_tests_FAIL | 1 | | | Kernel_panic-not_syncing:timer_doesn't_work_through_Interrupt-remapped_IO-APIC | 0 | 4 | +--------------------------------------------------------------------------------+-----------+------------+ [ 0.925865] apic 2 pin 22 not connected [ 0.930514] apic 2 pin 23 not connected [ 0.935299] ..TIMER: vector=0x30 apic1=0 pin1=2 apic2=-1 pin2=-1 [ 0.981980] Kernel panic - not syncing: timer doesn't work through Interrupt-remapped IO-APIC [ 0.991987] CPU: 0 PID: 1 Comm: swapper/0 Not tainted 4.10.0-rc6-00001-g08d85f3 #1 [ 1.000914] Hardware name: Intel Corporation S2600CP/S2600CP, BIOS SE5C600.86B.99.99.x036.091920111209 09/19/2011 [ 1.012868] Call Trace: [ 1.015882] dump_stack+0x61/0x7e [ 1.019853] panic+0xd3/0x212 [ 1.023441] ? vprintk_default+0x18/0x1a To reproduce: git clone git://git.kernel.org/pub/scm/linux/kernel/git/wfg/lkp-tests.git cd lkp-tests bin/lkp install job.yaml # job file is attached in this email bin/lkp run job.yaml Thanks, Kernel Test Robot