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Date: Thu, 21 May 2020 16:46:31 +0800
From: kernel test robot <rong.a.chen@...el.com>
To: Roopa Prabhu <roopa@...ulusnetworks.com>
Cc: dsahern@...il.com, davem@...emloft.net, netdev@...r.kernel.org,
nikolay@...ulusnetworks.com, jiri@...lanox.com,
idosch@...lanox.com, petrm@...lanox.com, lkp@...ts.01.org
Subject: [vxlan] dcf6d31edc: BUG:spinlock_bad_magic_on_CPU
Greeting,
FYI, we noticed the following commit (built with gcc-7):
commit: dcf6d31edcdfcc2f6a71a4588ee6916ba8d98abe ("[PATCH net-next v2 4/5] vxlan: support for nexthop notifiers")
url: https://github.com/0day-ci/linux/commits/Roopa-Prabhu/Support-for-fdb-ECMP-nexthop-groups/20200520-223707
in testcase: boot
on test machine: qemu-system-x86_64 -enable-kvm -cpu SandyBridge -smp 2 -m 8G
caused below changes (please refer to attached dmesg/kmsg for entire log/backtrace):
If you fix the issue, kindly add following tag
Reported-by: kernel test robot <rong.a.chen@...el.com>
[ 22.242861] BUG: spinlock bad magic on CPU#0, swapper/0/1
[ 22.243939] lock: init_net+0x380/0x1c40, .magic: 00000000, .owner: <none>/-1, .owner_cpu: 0
[ 22.245630] CPU: 0 PID: 1 Comm: swapper/0 Not tainted 5.7.0-rc5-01820-gdcf6d31edcdfc #1
[ 22.247289] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014
[ 22.248922] Call Trace:
[ 22.249548] dump_stack+0x8f/0xcb
[ 22.250296] do_raw_spin_lock+0x71/0xc0
[ 22.251109] _raw_spin_lock_irqsave+0x4e/0x60
[ 22.251996] ? atomic_notifier_chain_register+0x14/0x70
[ 22.253022] atomic_notifier_chain_register+0x14/0x70
[ 22.254042] ops_init+0x40/0x170
[ 22.254661] ? rdinit_setup+0x2b/0x2b
[ 22.255384] register_pernet_operations+0x11b/0x240
[ 22.256288] ? veth_init+0x11/0x11
[ 22.257004] register_pernet_subsys+0x24/0x40
[ 22.257935] vxlan_init_module+0x23/0x87
[ 22.258759] do_one_initcall+0x5d/0x320
[ 22.259535] ? rdinit_setup+0x2b/0x2b
[ 22.260285] ? rcu_read_lock_sched_held+0x52/0x80
[ 22.261177] kernel_init_freeable+0x260/0x2da
[ 22.262086] ? rest_init+0x250/0x250
[ 22.262846] kernel_init+0xa/0x110
[ 22.263564] ret_from_fork+0x3a/0x50
[ 22.269764] 8021q: adding VLAN 0 to HW filter on device eth0
[ 22.271101] IP-Config: Failed to open gretap0
[ 22.271862] IP-Config: Failed to open erspan0
[ 22.284305] Sending DHCP requests .
[ 24.278845] e1000: eth0 NIC Link is Up 1000 Mbps Full Duplex, Flow Control: RX
[ 24.283720] IPv6: ADDRCONF(NETDEV_CHANGE): eth0: link becomes ready
[ 24.780278] ., OK
[ 24.781519] IP-Config: Got DHCP answer from 10.0.2.2, my address is 10.0.2.15
[ 24.782786] IP-Config: Complete:
[ 24.783513] device=eth0, hwaddr=52:54:00:12:34:56, ipaddr=10.0.2.15, mask=255.255.255.0, gw=10.0.2.2
[ 24.785342] host=vm-snb-ssd-68, domain=, nis-domain=(none)
[ 24.786511] bootserver=10.0.2.2, rootserver=10.0.2.2, rootpath=
[ 24.786513] nameserver0=10.0.2.3
[ 24.811488] Freeing unused decrypted memory: 2040K
[ 24.813873] Freeing unused kernel image (initmem) memory: 2492K
[ 24.818291] Write protecting the kernel read-only data: 28672k
[ 24.821352] Freeing unused kernel image (text/rodata gap) memory: 2040K
[ 24.823377] Freeing unused kernel image (rodata/data gap) memory: 1060K
[ 24.824693] rodata_test: all tests were successful
[ 24.825746] Run /init as init process
[ 24.826612] with arguments:
[ 24.827378] /init
[ 24.828001] with environment:
[ 24.828766] HOME=/
[ 24.829415] TERM=linux
[ 24.830060] user=lkp
[ 24.830743] job=/lkp/jobs/scheduled/vm-snb-ssd-68/boot-1-yocto-x86_64-minimal-20190520.cgz-dcf6d31edcdfcc2f6a71a4588ee6916ba8d98abe-20200521-9044-sbd554-2.yaml
[ 24.833493] ARCH=x86_64
[ 24.834158] kconfig=x86_64-rhel-7.6-kselftests
[ 24.835146] branch=linux-devel/devel-catchup-202005210110
[ 24.836298] commit=dcf6d31edcdfcc2f6a71a4588ee6916ba8d98abe
[ 24.837463] BOOT_IMAGE=/pkg/linux/x86_64-rhel-7.6-kselftests/gcc-7/dcf6d31edcdfcc2f6a71a4588ee6916ba8d98abe/vmlinuz-5.7.0-rc5-01820-gdcf6d31edcdfc
[ 24.839809] max_uptime=600
[ 24.840536] RESULT_ROOT=/result/boot/1/vm-snb-ssd/yocto-x86_64-minimal-20190520.cgz/x86_64-rhel-7.6-kselftests/gcc-7/dcf6d31edcdfcc2f6a71a4588ee6916ba8d98abe/3
[ 24.843303] LKP_SERVER=inn
[ 24.844014] prompt_ramdisk=0
[ 24.844775] vga=normal
Starting udev
[ 24.930760] udevd[202]: starting version 3.2.7
[ 24.932154] random: udevd: uninitialized urandom read (16 bytes read)
[ 24.933434] random: udevd: uninitialized urandom read (16 bytes read)
[ 24.934660] random: udevd: uninitialized urandom read (16 bytes read)
[ 24.937351] udevd[202]: specified group 'kvm' unknown
[ 24.940415] udevd[203]: starting eudev-3.2.7
[ 24.966274] udevd[203]: specified group 'kvm' unknown
[ 25.028617] piix4_smbus 0000:00:01.3: SMBus Host Controller at 0x700, revision 0
[ 25.082190] input: PC Speaker as /devices/platform/pcspkr/input/input5
[ 25.085091] Floppy drive(s): fd0 is 2.88M AMI BIOS
[ 25.100857] FDC 0 is a S82078B
[ 25.112734] scsi host0: Virtio SCSI HBA
[ 25.114776] scsi 0:0:1:0: Direct-Access QEMU QEMU HARDDISK 2.5+ PQ: 0 ANSI: 5
[ 25.116769] scsi 0:0:1:10: Direct-Access QEMU QEMU HARDDISK 2.5+ PQ: 0 ANSI: 5
[ 25.121143] scsi 0:0:1:9: Direct-Access QEMU QEMU HARDDISK 2.5+ PQ: 0 ANSI: 5
[ 25.123826] parport_pc 00:04: reported by Plug and Play ACPI
[ 25.125347] scsi 0:0:1:8: Direct-Access QEMU QEMU HARDDISK 2.5+ PQ: 0 ANSI: 5
[ 25.127387] scsi 0:0:1:7: Direct-Access QEMU QEMU HARDDISK 2.5+ PQ: 0 ANSI: 5
[ 25.134463] scsi 0:0:1:6: Direct-Access QEMU QEMU HARDDISK 2.5+ PQ: 0 ANSI: 5
[ 25.136315] scsi 0:0:1:5: Direct-Access QEMU QEMU HARDDISK 2.5+ PQ: 0 ANSI: 5
[ 25.138160] scsi 0:0:1:4: Direct-Access QEMU QEMU HARDDISK 2.5+ PQ: 0 ANSI: 5
[ 25.139900] scsi 0:0:1:3: Direct-Access QEMU QEMU HARDDISK 2.5+ PQ: 0 ANSI: 5
[ 25.141513] parport0: PC-style at 0x378, irq 7 [PCSPP,TRISTATE]
[ 25.142995] scsi 0:0:1:2: Direct-Access QEMU QEMU HARDDISK 2.5+ PQ: 0 ANSI: 5
[ 25.144867] scsi 0:0:1:1: Direct-Access QEMU QEMU HARDDISK 2.5+ PQ: 0 ANSI: 5
[ 25.175988] libata version 3.00 loaded.
[ 25.183494] ata_piix 0000:00:01.1: version 2.13
[ 25.194549] random: fast init done
[ 25.197091] bochs-drm 0000:00:02.0: vgaarb: deactivate vga console
[ 25.204962] Console: switching to colour dummy device 80x25
[ 25.206691] [drm] Found bochs VGA, ID 0xb0c0.
[ 25.207289] [drm] Framebuffer size 16384 kB @ 0xfd000000, mmio @ 0xfebf0000.
[ 25.208765] scsi host1: ata_piix
[ 25.210258] [TTM] Zone kernel: Available graphics memory: 4065162 KiB
[ 25.212273] scsi host2: ata_piix
[ 25.212865] ata1: PATA max MWDMA2 cmd 0x1f0 ctl 0x3f6 bmdma 0xc080 irq 14
[ 25.213868] ata2: PATA max MWDMA2 cmd 0x170 ctl 0x376 bmdma 0xc088 irq 15
[ 25.214810] [TTM] Zone dma32: Available graphics memory: 2097152 KiB
[ 25.215581] [TTM] Initializing pool allocator
[ 25.216166] [TTM] Initializing DMA pool allocator
To reproduce:
# build kernel
cd linux
cp config-5.7.0-rc5-01820-gdcf6d31edcdfc .config
make HOSTCC=gcc-7 CC=gcc-7 ARCH=x86_64 olddefconfig prepare modules_prepare bzImage
git clone https://github.com/intel/lkp-tests.git
cd lkp-tests
bin/lkp qemu -k <bzImage> job-script # job-script is attached in this email
Thanks,
Rong Chen
View attachment "config-5.7.0-rc5-01820-gdcf6d31edcdfc" of type "text/plain" (205292 bytes)
View attachment "job-script" of type "text/plain" (4814 bytes)
Download attachment "dmesg.xz" of type "application/x-xz" (14796 bytes)
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