>-----Original Message----- >From: lkp-requ...@eclists.intel.com [mailto:lkp-requ...@eclists.intel.com] On >Behalf >Of kernel test robot >Sent: Wednesday, July 13, 2016 9:28 AM >To: Peter Chen <peter.c...@nxp.com> >Cc: 0day robot <fengguang...@intel.com>; LKML <linux-kernel@vger.kernel.org>; >l...@01.org >Subject: [lkp] [usb] 9696ef14de: WARNING: CPU: 0 PID: 1 at lib/list_debug.c:36 >__list_add+0x104/0x188 > > >FYI, we noticed the following commit: > >https://github.com/0day-ci/linux Peter-Chen/usb-udc-core-fix-error- >handling/20160711-100832 >commit 9696ef14ded07fb0847f8e1cdda6d98a89ecd4f2 ("usb: udc: core: fix error >handling") >
Thanks, but I really can't find the relationship between my patch and dump. Can you reproduce it after running again or without my patch? Peter >in testcase: boot > >on test machine: 2 threads qemu-system-x86_64 -enable-kvm -cpu Nehalem with >320M memory > >caused below changes: > >[ 22.076363] WARNING: CPU: 0 PID: 1 at lib/list_debug.c:36 >__list_add+0x104/0x188 >[ 22.079911] list_add double add: new=ffff88000e422e10, >prev=ffff88000e422e10, >next=ffff8800135e9168. >[ 22.086059] CPU: 0 PID: 1 Comm: swapper Tainted: G W 4.7.0-rc4- >00110-g9696ef1 #1 >[ 22.087856] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS >Debian-1.8.2-1 04/01/2014 >[ 22.097535] 0000000000000000 ffff88001345fc00 ffffffff8190c8e2 >ffff88001345fc40 >[ 22.099469] ffffffff81175453 0000002400000009 ffff88000e422e10 >ffff8800135e9168 >[ 22.101220] ffff88000e422e10 0000000000000000 0000000000000001 >ffff88001345fca8 >[ 22.103291] Call Trace: >[ 22.109166] [<ffffffff8190c8e2>] dump_stack+0x19/0x1b >[ 22.110520] [<ffffffff81175453>] __warn+0x10a/0x125 >[ 22.111632] [<ffffffff811754b4>] warn_slowpath_fmt+0x46/0x4e >[ 22.112939] [<ffffffff82860938>] ? klist_add_tail+0x29/0x62 >[ 22.114418] [<ffffffff8194b431>] __list_add+0x104/0x188 >[ 22.115600] [<ffffffff82860962>] klist_add_tail+0x53/0x62 >[ 22.118742] [<ffffffff81bd24e7>] device_add+0xb03/0xcca >[ 22.121931] [<ffffffff81bd283e>] device_create_groups_vargs+0xfe/0x133 >[ 22.123390] [<ffffffff81bd28e7>] device_create_with_groups+0x2b/0x2d >[ 22.130047] [<ffffffff82871904>] ? __mutex_unlock_slowpath+0x1cb/0x1d8 >[ 22.131513] [<ffffffff81b909eb>] misc_register+0x1e0/0x2ec >[ 22.132751] [<ffffffff85292b08>] mousedev_init+0x55/0x81 >[ 22.134198] [<ffffffff85292ab3>] ? input_leds_init+0x12/0x12 >[ 22.135442] [<ffffffff8522b831>] do_one_initcall+0xdc/0x16a >[ 22.139131] [<ffffffff8522bc46>] kernel_init_freeable+0x387/0x419 >[ 22.142059] [<ffffffff8286183b>] kernel_init+0xa/0x103 >[ 22.144618] [<ffffffff828778bf>] ret_from_fork+0x1f/0x40 >[ 22.148576] [<ffffffff82861831>] ? rest_init+0xb8/0xb8 >[ 22.150009] ---[ end trace 75873bca450a4fe4 ]--- >[ 22.151559] mousedev: PS/2 mouse device common for all mice >[ 22.155003] evbug: Connected device: input0 (Power Button at >LNXPWRBN/button/input0) > > >FYI, raw QEMU command line is: > > qemu-system-x86_64 -enable-kvm -cpu Nehalem -kernel /pkg/linux/x86_64- >randconfig-s0-07121340/gcc- >6/9696ef14ded07fb0847f8e1cdda6d98a89ecd4f2/vmlinuz-4.7.0-rc4-00110-g9696ef1 >-append 'root=/dev/ram0 user=lkp job=/lkp/scheduled/vm-intel12-yocto-x86_64- >3/bisect_boot-1-yocto-minimal-x86_64.cgz-x86_64-randconfig-s0-07121340- >9696ef14ded07fb0847f8e1cdda6d98a89ecd4f2-20160712-19858-1j3k6zi-0.yaml >ARCH=x86_64 kconfig=x86_64-randconfig-s0-07121340 branch=linux-devel/devel- >hourly-2016071211 commit=9696ef14ded07fb0847f8e1cdda6d98a89ecd4f2 >BOOT_IMAGE=/pkg/linux/x86_64-randconfig-s0-07121340/gcc- >6/9696ef14ded07fb0847f8e1cdda6d98a89ecd4f2/vmlinuz-4.7.0-rc4-00110-g9696ef1 >max_uptime=600 RESULT_ROOT=/result/boot/1/vm-intel12-yocto-x86_64/yocto- >minimal-x86_64.cgz/x86_64-randconfig-s0-07121340/gcc- >6/9696ef14ded07fb0847f8e1cdda6d98a89ecd4f2/0 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- >intel12-yocto-x86_64-3::dhcp drbd.minor_count=8' -initrd >/fs/KVM/initrd-vm-intel12- >yocto-x86_64-3 -m 320 -smp 2 -device e1000,netdev=net0 -netdev user,id=net0 - >boot order=nc -no-reboot -watchdog i6300esb -rtc base=localtime -drive >file=/fs/KVM/disk0-vm-intel12-yocto-x86_64-3,media=disk,if=virtio -drive >file=/fs/KVM/disk1-vm-intel12-yocto-x86_64-3,media=disk,if=virtio -pidfile >/dev/shm/kboot/pid-vm-intel12-yocto-x86_64-3 -serial >file:/dev/shm/kboot/serial-vm- >intel12-yocto-x86_64-3 -daemonize -display none -monitor null > > > > > >Thanks, >Xiaolong
