FYI, we noticed the below changes on https://github.com/0day-ci/linux Johannes-Berg/wext-fix-message-delay-ordering/20160127-204511 commit ee7e25b5789c6c2f4d5ebd9d69f9c2f313ce32d6 ("wext: fix message delay/ordering") [ 0.920828] NET: Registered protocol family 8 [ 0.921515] NET: Registered protocol family 20 [ 0.921515] NET: Registered protocol family 20 [ 0.922281] BUG: spinlock bad magic on CPU#0, swapper/1 [ 0.922281] BUG: spinlock bad magic on CPU#0, swapper/1 [ 0.923186] lock: init_net+0x2d4/0x520, .magic: 00000000, .owner: /-1, .owner_cpu: 0 [ 0.923186] lock: init_net+0x2d4/0x520, .magic: 00000000, .owner: /-1, .owner_cpu: 0 [ 0.924551] CPU: 0 PID: 1 Comm: swapper Not tainted 4.4.0-03441-gee7e25b5 #1 [ 0.924551] CPU: 0 PID: 1 Comm: swapper Not tainted 4.4.0-03441-gee7e25b5 #1 [ 0.925718] 00000000 [ 0.925718] 00000000 b1b6af20 b1b6af20 b0069e68 b0069e68 b12f102b b12f102b b0069e90 b0069e90 b104a1d3 b104a1d3 b1b0ddde b1b0ddde b1ccf5b4 b1ccf5b4 [ 0.927032] 00000000 [ 0.927032] 00000000 b1b6af20 b1b6af20 ffffffff ffffffff 00000000 00000000 b1ccf5b4 b1ccf5b4 b1ccf5a8 b1ccf5a8 b0069ea0 b0069ea0 b104a1fa b104a1fa [ 0.928303] b1b0de40 [ 0.928303] b1b0de40 b1ccf5b4 b1ccf5b4 b0069ebc b0069ebc b104a295 b104a295 b023a5c6 b023a5c6 b0069f30 b0069f30 00000286 00000286 b1ccf5a8 b1ccf5a8 [ 0.929613] Call Trace: [ 0.929613] Call Trace: [ 0.929995] [] dump_stack+0x16/0x18 [ 0.929995] [] dump_stack+0x16/0x18 [ 0.930662] [] spin_dump+0x6c/0x76 [ 0.930662] [] spin_dump+0x6c/0x76 [ 0.931405] [] spin_bug+0x1d/0x21 [ 0.931405] [] spin_bug+0x1d/0x21 [ 0.932053] [] do_raw_spin_lock+0x1e/0xbc [ 0.932053] [] do_raw_spin_lock+0x1e/0xbc [ 0.932869] [] _raw_spin_lock_irqsave+0x1f/0x24 [ 0.932869] [] _raw_spin_lock_irqsave+0x1f/0x24 [ 0.933751] [] skb_dequeue+0x12/0x2d [ 0.933751] [] skb_dequeue+0x12/0x2d [ 0.934448] [] wireless_nlevent_flush+0x47/0x71 [ 0.934448] [] wireless_nlevent_flush+0x47/0x71 [ 0.935275] [] wext_netdev_notifier_call+0x8/0xf [ 0.935275] [] wext_netdev_notifier_call+0x8/0xf [ 0.936120] [] call_netdevice_notifier+0xd/0x11 [ 0.936120] [] call_netdevice_notifier+0xd/0x11 [ 0.936988] [] register_netdevice_notifier+0x72/0x13b [ 0.936988] [] register_netdevice_notifier+0x72/0x13b [ 0.937885] [] ? do_one_initcall+0x84/0x168 [ 0.937885] [] ? do_one_initcall+0x84/0x168 [ 0.938654] [] ? wext_pernet_init+0x3e/0x3e [ 0.938654] [] ? wext_pernet_init+0x3e/0x3e [ 0.939429] [] wireless_nlevent_init+0xd/0x1d [ 0.939429] [] wireless_nlevent_init+0xd/0x1d [ 0.940232] [] do_one_initcall+0x159/0x168 [ 0.940232] [] do_one_initcall+0x159/0x168 [ 0.941043] [] ? parse_args+0x1c2/0x28a [ 0.941043] [] ? parse_args+0x1c2/0x28a [ 0.941766] [] kernel_init_freeable+0x13c/0x1b9 [ 0.941766] [] kernel_init_freeable+0x13c/0x1b9 [ 0.942595] [] kernel_init+0x8/0xb5 [ 0.942595] [] kernel_init+0x8/0xb5 [ 0.943268] [] ret_from_kernel_thread+0x20/0x34 [ 0.943268] [] ret_from_kernel_thread+0x20/0x34 [ 0.944095] [] ? rest_init+0x65/0x65 [ 0.944095] [] ? rest_init+0x65/0x65 Elapsed time: 10 qemu-system-i386 -enable-kvm -cpu Haswell,+smep,+smap -kernel /pkg/linux/i386-randconfig-h1-01272117/gcc-5/ee7e25b5789c6c2f4d5ebd9d69f9c2f313ce32d6/vmlinuz-4.4.0-03441-gee7e25b5 -append 'root=/dev/ram0 user=lkp job=/lkp/scheduled/vm-vp-quantal-i386-19/rand_boot-1-quantal-core-i386.cgz-i386-randconfig-h1-01272117-ee7e25b5789c6c2f4d5ebd9d69f9c2f313ce32d6-20160128-88657-1ugcywb-1.yaml ARCH=i386 kconfig=i386-randconfig-h1-01272117 branch=linux-devel/devel-spot-201601272037 commit=ee7e25b5789c6c2f4d5ebd9d69f9c2f313ce32d6 BOOT_IMAGE=/pkg/linux/i386-randconfig-h1-01272117/gcc-5/ee7e25b5789c6c2f4d5ebd9d69f9c2f313ce32d6/vmlinuz-4.4.0-03441-gee7e25b5 max_uptime=600 RESULT_ROOT=/result/boot/1/vm-vp-quantal-i386/quantal-core-i386.cgz/i386-randconfig-h1-01272117/gcc-5/ee7e25b5789c6c2f4d5ebd9d69f9c2f313ce32d6/0 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-vp-quantal-i386-19::dhcp drbd.minor_count=8' -initrd /fs/sdh1/initrd-vm-vp-quantal-i386-19 -m 360 -smp 1 -device e1000,netdev=net0 -netdev user,id=net0 -boot order=nc -no-reboot -watchdog i6300esb -rtc base=localtime -pidfile /dev/shm/kboot/pid-vm-vp-quantal-i386-19 -serial file:/dev/shm/kboot/serial-vm-vp-quantal-i386-19 -daemonize -display none -monitor null Thanks, Kernel Test Robot