FYI, we noticed the following commit: commit: dec0553d3100b4b624dbbc2e5bf1d7df8d70b09f ("mm/vmalloc: terminate searching since one node found") url: https://github.com/0day-ci/linux/commits/Zhaoyang-Huang/mm-vmalloc-terminate-searching-since-one-node-found/20170721-235704 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): +--------------------------------------------------+-----------+------------+ | | v4.13-rc1 | dec0553d31 | +--------------------------------------------------+-----------+------------+ | boot_successes | 3557 | 0 | | boot_failures | 460 | 50 | | BUG:kernel_in_stage | 26 | 1 | | BUG:kernel_hang_in_test_stage | 397 | | | general_protection_fault:#[##] | 4 | | | Kernel_panic-not_syncing:Fatal_exception | 13 | 49 | | BUG:unable_to_handle_kernel | 9 | | | Oops:#[##] | 9 | | | BUG:kernel_reboot-without-warning_in_test_stage | 12 | | | invoked_oom-killer:gfp_mask=0x | 12 | | | Mem-Info | 12 | 49 | | Out_of_memory:Kill_process | 3 | | | WARNING:at_mm/vmalloc.c:#vmap_page_range_noflush | 0 | 49 | | kernel_BUG_at_net/core/ptp_classifier.c | 0 | 49 | | invalid_opcode:#[##] | 0 | 49 | +--------------------------------------------------+-----------+------------+ [ 0.214071] WARNING: CPU: 0 PID: 1 at mm/vmalloc.c:152 vmap_page_range_noflush+0x2d3/0x30b [ 0.215090] CPU: 0 PID: 1 Comm: swapper/0 Not tainted 4.13.0-rc1-00001-gdec0553 #35 [ 0.215856] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.9.3-20161025_171302-gandalf 04/01/2014 [ 0.216005] task: ffff883f40058000 task.stack: ffffad1b00008000 [ 0.216586] RIP: 0010:vmap_page_range_noflush+0x2d3/0x30b [ 0.217123] RSP: 0000:ffffad1b0000bcf0 EFLAGS: 00010282 [ 0.217635] RAX: ffff883f40021000 RBX: ffffad1b00001000 RCX: ffff883f5d7ba600 [ 0.218394] RDX: ffff883f40021000 RSI: ffff883f40096088 RDI: 0000000000021000 [ 0.219107] RBP: ffffad1b0000bd70 R08: ffff883f4017d2c0 R09: 0000000000002000 [ 0.220004] R10: 8000000000000163 R11: 0000000000000002 R12: ffffad1b00000000 [ 0.220727] R13: ffffffffa1416ad0 R14: ffffad1b00001000 R15: ffffad1b00001000 [ 0.221440] FS: 0000000000000000(0000) GS:ffff883f5d200000(0000) knlGS:0000000000000000 [ 0.222602] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 0.223198] CR2: 0000000000000000 CR3: 000000000b416000 CR4: 00000000000006f0 [ 0.224008] Call Trace: [ 0.224264] map_vm_area+0x31/0x3d [ 0.224611] __vmalloc_node_range+0x15d/0x1e5 [ 0.225067] __vmalloc_node+0x2d/0x2f [ 0.225430] ? bpf_prog_alloc+0x37/0xa0 [ 0.225817] __vmalloc+0x1b/0x1d [ 0.226169] bpf_prog_alloc+0x37/0xa0 [ 0.226533] ? set_debug_rodata+0x12/0x12 [ 0.226961] bpf_prog_create+0x41/0x90 [ 0.228007] ptp_classifier_init+0x26/0x2e [ 0.228437] ? dmi_save_dev_pciaddr+0x42/0xa2 [ 0.228924] sock_init+0x95/0x9a [ 0.229245] ? bsp_pm_check_init+0x14/0x14 [ 0.229672] do_one_initcall+0x8b/0x132 [ 0.230056] ? set_debug_rodata+0x12/0x12 [ 0.230471] kernel_init_freeable+0x19f/0x224 [ 0.230925] ? rest_init+0x143/0x143 [ 0.231308] kernel_init+0x9/0xe6 [ 0.231667] ret_from_fork+0x25/0x30 [ 0.232004] Code: 48 8b 7d c8 4c 89 e6 e8 2a ef fe ff 85 c0 74 99 eb 28 48 63 45 c4 48 8b 75 a0 48 8b 0c c6 48 8b 45 b0 48 f7 00 9f ff ff ff 74 04 <0f> ff eb 0b 48 85 c9 0f 85 0c fe ff ff 0f ff c7 45 c4 f4 ff ff [ 0.234047] ---[ end trace 4503c1098d1f2449 ]--- To reproduce: git clone https://github.com/01org/lkp-tests.git cd lkp-tests bin/lkp qemu -k job-script # job-script is attached in this email Thanks, Xiaolong