FYI, we noticed the following commit: commit: db4ea8c10708f3879f80c9822775bc72f3391b41 ("sched: force update of blocked load of idle cpus") git://internal_merge_and_test_tree devel-catchup-201612230208 in testcase: boot on test machine: qemu-system-x86_64 -enable-kvm -cpu Haswell,+smep,+smap -smp 2 -m 512M caused below changes: +-------------------------------------------------------+------------+------------+ | | 6b94780e45 | db4ea8c107 | +-------------------------------------------------------+------------+------------+ | boot_successes | 0 | 0 | | boot_failures | 6 | 4 | | BUG:key_not_in.data | 6 | | | WARNING:at_kernel/locking/lockdep.c:#lockdep_init_map | 6 | | | calltrace:vhci_hcd_init | 6 | | | general_protection_fault:#[##]SMP_KASAN | 0 | 4 | | RIP:run_rebalance_domains | 0 | 4 | | Kernel_panic-not_syncing:Fatal_exception_in_interrupt | 0 | 4 | +-------------------------------------------------------+------------+------------+ [ 7.489496] clocksource: Switched to clocksource kvm-clock [ 8.319602] kasan: CONFIG_KASAN_INLINE enabled [ 8.326177] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 8.346329] general protection fault: 0000 [#1] SMP KASAN [ 8.353824] CPU: 1 PID: 0 Comm: swapper/1 Not tainted 4.9.0-rc8-00180-gdb4ea8c #1 [ 8.374304] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.9.3-20161025_171302-gandalf 04/01/2014 [ 8.395966] task: ffff880000389480 task.stack: ffff880000398000 [ 8.405112] RIP: 0010:[<ffffffff81184c95>] [<ffffffff81184c95>] run_rebalance_domains+0x18d/0x5d6 [ 8.420303] RSP: 0000:ffff880018d07ec0 EFLAGS: 00010206 [ 8.428279] RAX: dffffc0000000000 RBX: ffffffff83c09000 RCX: 0000000000000005 [ 8.440013] RDX: dffffc0000000000 RSI: 000000004f45a5d9 RDI: 0000000000000028 [ 8.451672] RBP: ffff880018d07f38 R08: 0000000000000000 R09: 0000000000000000 [ 8.463146] R10: ffff8800183978ef R11: ffffed0003072f1d R12: 0000000000000000 [ 8.474625] R13: ffffffff83b853e8 R14: 0000000000000001 R15: ffff880018d1fac0 [ 8.486385] FS: 0000000000000000(0000) GS:ffff880018d00000(0000) knlGS:0000000000000000 [ 8.499287] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 8.509007] CR2: 00000000ffffffff CR3: 0000000003c0e000 CR4: 00000000000006e0 [ 8.520279] Stack: [ 8.523515] ffffffff81071467 dffffc0000000000 fffffbfff09e1e45 0000000084f0f230 [ 8.536878] ffffffff811eecfd ffffffff84f0f228 ffffffffffffffff 00000000fffea5c8 [ 8.550090] 0000000118d07f60 000000000001fac0 dffffc0000000000 0000000000000080 [ 8.562414] Call Trace: [ 8.567270] <IRQ> [ 8.570645] [<ffffffff81071467>] ? kvm_clock_read+0x2e/0x2e [ 8.580396] [<ffffffff811eecfd>] ? clocksource_delta+0x34/0x3e [ 8.589403] [<ffffffff83040731>] __do_softirq+0x231/0x4e8 [ 8.599257] [<ffffffff8111490b>] irq_exit+0x7a/0x1d4 [ 8.607318] [<ffffffff8105dc11>] smp_reschedule_interrupt+0x24/0x26 [ 8.618021] [<ffffffff8303fd24>] reschedule_interrupt+0x84/0x90 [ 8.628230] <EOI> [ 8.631601] [<ffffffff8303d3b9>] ? native_safe_halt+0x6/0x8 [ 8.641093] [<ffffffff8303d0a7>] default_idle+0x1f/0x32 [ 8.649198] [<ffffffff810397b5>] arch_cpu_idle+0xf/0x11 [ 8.658688] [<ffffffff8303d46b>] default_idle_call+0x1e/0x20 [ 8.667630] [<ffffffff81195db3>] cpu_startup_entry+0x1b2/0x2b4 [ 8.677513] [<ffffffff81195c01>] ? cpu_in_idle+0x25/0x25 [ 8.686723] [<ffffffff811fd4b8>] ? clockevents_config_and_register+0x88/0x91 [ 8.698485] [<ffffffff8105fd88>] start_secondary+0x28e/0x2b6 [ 8.707487] [<ffffffff8105fafa>] ? set_cpu_sibling_map+0xdf8/0xdf8 [ 8.717766] Code: c1 ea 03 80 3c 02 00 74 08 4c 89 e7 e8 cd 8e 20 00 4d 8b 24 24 48 ba 00 00 00 00 00 fc ff df 49 8d 7c 24 28 48 89 f9 48 c1 e9 03 <8a> 0c 11 48 89 fa 83 e2 07 83 c2 03 38 ca 7c 09 84 c9 74 05 e8 [ 8.764755] RIP [<ffffffff81184c95>] run_rebalance_domains+0x18d/0x5d6 [ 8.775188] RSP <ffff880018d07ec0> [ 8.782191] ---[ end trace b7890bb32f0d091d ]--- [ 8.788958] VFS: Disk quotas dquot_6.6.0 To reproduce: git clone git://git.kernel.org/pub/scm/linux/kernel/git/wfg/lkp-tests.git cd lkp-tests bin/lkp qemu -k <bzImage> job-script # job-script is attached in this email Thanks, Xiaolong