FYI, we noticed the below changes on git://git.kernel.org/pub/scm/linux/kernel/git/cmetcalf/linux-tile.git master commit e164ade07b215cc33da6831734140f0aa0615d0a ("watchdog: add watchdog_exclude sysctl to assist nohz") +----------------------------------------------------------+------------+------------+ | | a578fc8f8d | e164ade07b | +----------------------------------------------------------+------------+------------+ | boot_successes | 10 | 0 | | boot_failures | 0 | 10 | | WARNING:at_mm/memblock.c:#memblock_virt_alloc_internal() | 0 | 10 | | backtrace:alloc_bootmem_cpumask_var | 0 | 10 | | backtrace:lockup_detector_init | 0 | 10 | | backtrace:kernel_init_freeable | 0 | 10 | +----------------------------------------------------------+------------+------------+ [ 0.040479] smpboot: CPU0: Intel Core Processor (Haswell) (fam: 06, model: 3c, stepping: 01) [ 0.041467] Performance Events: unsupported p6 CPU model 60 no PMU driver, software events only. [ 0.042783] ------------[ cut here ]------------ [ 0.043305] WARNING: CPU: 0 PID: 1 at mm/memblock.c:1165 memblock_virt_alloc_internal+0x176/0x319() [ 0.044000] Modules linked in: [ 0.044045] CPU: 0 PID: 1 Comm: swapper/0 Not tainted 4.0.0-rc7-next-20150407 #85 [ 0.044856] 0000000000000000 ffff880036903dd8 ffffffffa40195dd 0000000000000000 [ 0.045714] 0000000000000009 ffff880036903e18 ffffffffa3a8a65e ffffffffa4811304 [ 0.046575] ffffffffa4ca46cf 00000000ffffffff 0000000000000001 00000000ffffff01 [ 0.047429] Call Trace: [ 0.047715] [<ffffffffa40195dd>] dump_stack+0x7f/0xa7 [ 0.048008] [<ffffffffa3a8a65e>] warn_slowpath_common+0xcb/0xe4 [ 0.048663] [<ffffffffa4ca46cf>] ? memblock_virt_alloc_internal+0x176/0x319 [ 0.049434] [<ffffffffa3a8a70b>] warn_slowpath_null+0x15/0x17 [ 0.050071] [<ffffffffa4ca46cf>] memblock_virt_alloc_internal+0x176/0x319 [ 0.050818] [<ffffffffa4ca4a36>] memblock_virt_alloc_try_nid+0x76/0xc5 [ 0.051541] [<ffffffffa4cae5c0>] alloc_bootmem_cpumask_var+0x1d/0x24 [ 0.052007] [<ffffffffa4c99636>] lockup_detector_init+0x28/0x85 [ 0.052661] [<ffffffffa4c744d0>] kernel_init_freeable+0x82/0x1f2 [ 0.053329] [<ffffffffa400a00b>] ? rest_init+0x82/0x82 [ 0.053898] [<ffffffffa400a014>] kernel_init+0x9/0x157 [ 0.054472] [<ffffffffa4022143>] ret_from_fork+0x53/0x90 [ 0.055061] [<ffffffffa400a00b>] ? rest_init+0x82/0x82 [ 0.055636] ---[ end trace 6a8397138c633b81 ]--- [ 0.056209] x86: Booting SMP configuration: Thanks, Ying Huang _______________________________________________ LKP mailing list LKP(a)linux.intel.com