FYI, we noticed the below changes on git://bee.sh.intel.com/git/aaron/linux.git swap_numa commit 0b444cfa6cd3db4a5954a010bc801ae6b01f464d ("page_allocation: do not clear page after allocation") [ 0.305605] prandom: seed boundary self test passed [ 0.307426] prandom: 100 self tests passed [ 0.308834] NET: Registered protocol family 16 [ 0.323121] general protection fault: 0000 [#1] [ 0.324166] CPU: 0 PID: 1 Comm: swapper Not tainted 4.5.0-rc4-00004-g0b444cf #1 [ 0.325749] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS Debian-1.8.2-1 04/01/2014 [ 0.327666] task: ffff880000058000 ti: ffff880000060000 task.ti: ffff880000060000 [ 0.329283] RIP: 0010:[<ffffffff815065af>] [<ffffffff815065af>] netlink_has_listeners+0x4d/0x62 [ 0.331202] RSP: 0000:ffff880000063da8 EFLAGS: 00010213 [ 0.332350] RAX: a623d84d3c6a2145 RBX: 0000000000000001 RCX: 0000000000000002 [ 0.333893] RDX: ffff880000155950 RSI: 0000000000000000 RDI: 0000000000000246 [ 0.335465] RBP: ffff880000063db8 R08: 0000000000000002 R09: 0000000000102017 [ 0.339964] R10: 0000000000000000 R11: ffff880000149154 R12: 0000000000000000 [ 0.341529] R13: 0000000000000000 R14: ffff8800000966e0 R15: 0000000000000000 [ 0.355889] FS: 0000000000000000(0000) GS:ffffffff81927000(0000) knlGS:0000000000000000 [ 0.357645] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 0.358888] CR2: 00000000ffffffff CR3: 0000000001916000 CR4: 00000000000406f0 [ 0.360444] Stack: [ 0.360884] ffff880000169848 ffff880000149000 ffff880000063e10 ffffffff81205a2e [ 0.362571] 0000000000000000 ffff88000016d800 ffffffff818ca011 ffff880000092120 [ 0.364259] ffff880000169848 0000000000000000 0000000000000000 ffffffff81ab60b0 [ 0.365930] Call Trace: [ 0.366489] [<ffffffff81205a2e>] kobject_uevent_env+0x20a/0x35d [ 0.367790] [<ffffffff81205b8c>] kobject_uevent+0xb/0xd [ 0.368942] [<ffffffff81205054>] kset_register+0x37/0x3f [ 0.382601] [<ffffffff812c63ad>] __class_register+0xe0/0x175 [ 0.383854] [<ffffffff81a5794f>] ? gpiolib_debugfs_init+0x24/0x24 [ 0.385206] [<ffffffff81a57969>] gpiolib_sysfs_init+0x1a/0x93 [ 0.386480] [<ffffffff81a5794f>] ? gpiolib_debugfs_init+0x24/0x24 [ 0.387821] [<ffffffff81a35ede>] do_one_initcall+0xe0/0x165 [ 0.389047] [<ffffffff81a360e8>] kernel_init_freeable+0x185/0x20a [ 0.390413] [<ffffffff815b3513>] ? rest_init+0xba/0xba [ 0.391547] [<ffffffff815b351c>] kernel_init+0x9/0xca [ 0.392668] [<ffffffff815b8a3f>] ret_from_fork+0x3f/0x70 [ 0.393834] [<ffffffff815b3513>] ? rest_init+0xba/0xba [ 0.394968] Code: 02 00 00 45 31 e4 48 69 d2 b0 01 00 00 48 03 15 a8 cf 52 00 48 8b 82 70 01 00 00 48 85 c0 74 13 8d 73 ff 3b b2 7c 01 00 00 73 08 <48> 0f a3 70 10 45 19 e4 e8 a7 e8 ff ff 44 89 e0 5b 41 5c 5d c3 [ 0.413066] RIP [<ffffffff815065af>] netlink_has_listeners+0x4d/0x62 [ 0.414531] RSP <ffff880000063da8> [ 0.415418] ---[ end trace 5787594098d00646 ]--- [ 0.416426] Kernel panic - not syncing: Fatal exception FYI, raw QEMU command line is: qemu-system-x86_64 -enable-kvm -cpu Haswell,+smep,+smap -kernel /pkg/linux/x86_64-randconfig-s4-03181734/gcc-5/0b444cfa6cd3db4a5954a010bc801ae6b01f464d/vmlinuz-4.5.0-rc4-00004-g0b444cf -append 'root=/dev/ram0 user=lkp job=/lkp/scheduled/vm-kbuild-1G-3/bisect_boot-1-debian-x86_64-2015-02-07.cgz-x86_64-randconfig-s4-03181734-0b444cfa6cd3db4a5954a010bc801ae6b01f464d-20160318-34923-138plvt-0.yaml ARCH=x86_64 kconfig=x86_64-randconfig-s4-03181734 branch=linux-devel/devel-catchup-201603181757 commit=0b444cfa6cd3db4a5954a010bc801ae6b01f464d BOOT_IMAGE=/pkg/linux/x86_64-randconfig-s4-03181734/gcc-5/0b444cfa6cd3db4a5954a010bc801ae6b01f464d/vmlinuz-4.5.0-rc4-00004-g0b444cf max_uptime=600 RESULT_ROOT=/result/boot/1/vm-kbuild-1G/debian-x86_64-2015-02-07.cgz/x86_64-randconfig-s4-03181734/gcc-5/0b444cfa6cd3db4a5954a010bc801ae6b01f464d/0 LKP_SERVER=inn earlyprintk=ttyS0,115200 systemd.log_level=err debug apic=debug sysrq_always_enabled rcupdate.rcu_cpu_stall_timeout=100 panic=-1 softlockup_panic=1 nmi_watchdog=panic oops=panic load_ramdisk=2 prompt_ramdisk=0 console=ttyS0,115200 console=tty0 vga=normal rw ip=::::vm-kbuild-1G-3::dhcp' -initrd /fs/sdd1/initrd-vm-kbuild-1G-3 -m 1024 -smp 2 -device e1000,netdev=net0 -netdev user,id=net0,hostfwd=tcp::23002-:22 -boot order=nc -no-reboot -watchdog i6300esb -rtc base=localtime -device virtio-scsi-pci,id=scsi0 -drive file=/fs/sdd1/disk0-vm-kbuild-1G-3,if=none,id=hd0,media=disk,aio=native,cache=none -device scsi-hd,bus=scsi0.0,drive=hd0,scsi-id=1,lun=0 -drive file=/fs/sdd1/disk1-vm-kbuild-1G-3,if=none,id=hd1,media=disk,aio=native,cache=none -device scsi-hd,bus=scsi0.0,drive=hd1,scsi-id=1,lun=1 -drive file=/fs/sdd1/disk2-vm-kbuild-1G-3,if=none,id=hd2,media=disk,aio=native,cache=none -device scsi-hd,bus=scsi0.0,drive=hd2,scsi-id=1,lun=2 -drive file=/fs/sdd1/disk3-vm-kbuild-1G-3,if=none,id=hd3,media=disk,aio=native,cache=none -device scsi-hd,bus=scsi0.0,drive=hd3,scsi-id=1,lun=3 -drive file=/fs/sdd1/disk4-vm-kbuild-1G-3,if=none,id=hd4,media=disk,aio=native,cache=none -device scsi-hd,bus=scsi0.0,drive=hd4,scsi-id=1,lun=4 -pidfile /dev/shm/kboot/pid-vm-kbuild-1G-3 -serial file:/dev/shm/kboot/serial-vm-kbuild-1G-3 -daemonize -display none -monitor null Thanks, Kernel Test Robot