FYI, we noticed the following commit: commit: 0693cc0dcc1288e8985d0b714f6fa50022cf3aad ("origin") git://git.cmpxchg.org/linux-mmotm.git master in testcase: boot on test machine: qemu-system-x86_64 -enable-kvm -smp 2 -m 512M caused below changes (please refer to attached dmesg/kmsg for entire log/backtrace): +----------------------------------------------------+-------+------------+ | | v4.10 | 0693cc0dcc | +----------------------------------------------------+-------+------------+ | boot_successes | 1926 | 0 | | boot_failures | 150 | 8 | | BUG:kernel_hang_in_test_stage | 122 | | | invoked_oom-killer:gfp_mask=0x | 9 | | | Mem-Info | 9 | | | BUG:kernel_hang_in_boot_stage | 8 | | | BUG:kernel_reboot-without-warning_in_test_stage | 7 | | | INFO:creating/lkp/benchmarks/ltp/output_directory | 3 | | | INFO:creating/lkp/benchmarks/ltp/results_directory | 3 | | | INFO:ltp-pan_reported_some_tests_FAIL | 2 | | | INFO:ltp-pan_reported_all_tests_PASS | 1 | | | Kernel_panic-not_syncing:softlockup:hung_tasks | 1 | | | WARNING:at_kernel/time/hrtimer.c:#hrtimer_init | 0 | 8 | +----------------------------------------------------+-------+------------+ [ 8.264432] WARNING: CPU: 0 PID: 1 at kernel/time/hrtimer.c:1090 hrtimer_init+0x11f/0x199 [ 8.267301] Invalid clockid 4. Using MONOTONIC [ 8.268707] Modules linked in: [ 8.269767] CPU: 0 PID: 1 Comm: swapper/0 Not tainted 4.10.0-00001-g0693cc0 #24 [ 8.272201] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.9.3-20161025_171302-gandalf 04/01/2014 [ 8.272696] Call Trace: [ 8.272696] dump_stack+0x82/0xb8 [ 8.272696] __warn+0xc2/0xdd [ 8.272696] warn_slowpath_fmt+0x4b/0x53 [ 8.272696] ? lock_is_held_type+0x4b/0x54 [ 8.272696] hrtimer_init+0x11f/0x199 [ 8.272696] ? mac80211_hwsim_get_tsf+0x1d/0x1d [ 8.272696] tasklet_hrtimer_init+0x1b/0x4f [ 8.272696] mac80211_hwsim_new_radio+0x7fe/0x916 [ 8.272696] ? set_debug_rodata+0x12/0x12 [ 8.272696] init_mac80211_hwsim+0x138/0x29f [ 8.272696] ? rndis_wlan_driver_init+0x1b/0x1b [ 8.272696] do_one_initcall+0x90/0x142 [ 8.272696] ? set_debug_rodata+0x12/0x12 [ 8.272696] kernel_init_freeable+0x1cb/0x258 [ 8.272696] ? rest_init+0x13b/0x13b [ 8.272696] kernel_init+0xe/0xf5 [ 8.272696] ret_from_fork+0x31/0x40 [ 8.300087] ---[ end trace d6a3917592f85890 ]--- 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, Kernel Test Robot