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Date: Tue, 26 Jul 2016 22:21:05 +0800
From: kernel test robot <xiaolong.ye@...el.com>
To: Waiman Long <Waiman.Long@....com>
Cc: 0day robot <fengguang.wu@...el.com>, Jan Kara <jack@...e.cz>,
LKML <linux-kernel@...r.kernel.org>, lkp@...org
Subject: [lkp] [vfs] db8c57ac59: WARNING: CPU: 0 PID: 1 at
lib/list_debug.c:62 __list_del_entry+0xc1/0xd0
FYI, we noticed the following commit:
https://github.com/0day-ci/linux Waiman-Long/vfs-Use-dlock-list-for-SB-s-s_inodes-list/20160725-042807
commit db8c57ac59a4fe06b79073306bcb1ce131c2c07a ("vfs: Use dlock list for superblock's inode list")
in testcase: boot
on test machine: 1 threads qemu-system-x86_64 -enable-kvm -cpu SandyBridge with 320M memory
caused below changes:
+---------------------------------------------------+------------+------------+
| | 9141104678 | db8c57ac59 |
+---------------------------------------------------+------------+------------+
| boot_successes | 0 | 0 |
| boot_failures | 68 | 68 |
| WARNING:at_lib/list_debug.c:#__list_add | 59 | 58 |
| BUG:kernel_test_hang | 59 | 43 |
| BUG:unable_to_handle_kernel | 9 | 17 |
| Oops | 9 | 17 |
| RIP:late_resume_init | 9 | 25 |
| Kernel_panic-not_syncing:Fatal_exception | 9 | 25 |
| general_protection_fault:#[##]PREEMPT_SMP | 0 | 8 |
| WARNING:at_lib/list_debug.c:#__list_del_entry | 0 | 58 |
| WARNING:at_lib/debugobjects.c:#debug_print_object | 0 | 8 |
+---------------------------------------------------+------------+------------+
[ 23.837279] gadget: usb_udc_nop_release
[ 23.837826] usbip-vudc: probe of usbip-vudc.0 failed with error -22
[ 23.838979] ------------[ cut here ]------------
[ 23.839653] WARNING: CPU: 0 PID: 1 at lib/list_debug.c:62 __list_del_entry+0xc1/0xd0
[ 23.840985] list_del corruption. next->prev should be ffff880010041860, but was (null)
[ 23.851292] CPU: 0 PID: 1 Comm: swapper/0 Not tainted 4.7.0-rc7-00004-gdb8c57a #1
[ 23.852301] 0000000000000000 ffff88000038fca8 ffffffff817c2f3c ffffffff817f4ef1
[ 23.853367] 0000000000000009 ffff88000038fd08 0000000000000000 ffff88000038fcf8
[ 23.854428] ffffffff810be1e9 ffff880000000000 0000003e00000000 ffff88000038fd18
[ 23.855488] Call Trace:
[ 23.855835] [<ffffffff817c2f3c>] dump_stack+0x89/0xcd
[ 23.856529] [<ffffffff817f4ef1>] ? __list_del_entry+0xc1/0xd0
[ 23.857311] [<ffffffff810be1e9>] __warn+0xe9/0x120
[ 23.857962] [<ffffffff810be2d9>] warn_slowpath_fmt+0x49/0x50
[ 23.858733] [<ffffffff817f4ef1>] __list_del_entry+0xc1/0xd0
[ 23.877534] [<ffffffff817c5b31>] kobj_kset_leave+0x31/0x70
[ 23.878291] [<ffffffff817c58e6>] kobject_del+0x36/0x60
[ 23.878990] [<ffffffff818fa473>] device_del+0x203/0x230
[ 23.879712] [<ffffffff819003c6>] platform_device_del+0x26/0x90
[ 23.880539] [<ffffffff82ae99e7>] init+0xf2/0x12a
[ 23.881206] [<ffffffff82ae98f5>] ? usbip_core_init+0x25/0x25
[ 23.882011] [<ffffffff82a83a6b>] do_one_initcall+0x97/0x14b
[ 23.882808] [<ffffffff82a83d40>] kernel_init_freeable+0x1ed/0x281
[ 23.883673] [<ffffffff82a83dd4>] ? kernel_init_freeable+0x281/0x281
[ 23.884566] [<ffffffff81fedd1e>] kernel_init+0xe/0x100
[ 23.885304] [<ffffffff81ff77af>] ret_from_fork+0x1f/0x40
[ 23.886058] [<ffffffff81fedd10>] ? rest_init+0x140/0x140
[ 23.886935] ---[ end trace 9043dd1c9d8628ec ]---
[ 23.887757] ------------[ cut here ]------------
FYI, raw QEMU command line is:
qemu-system-x86_64 -enable-kvm -cpu SandyBridge -kernel /pkg/linux/x86_64-randconfig-s2-07251540/gcc-4.4/db8c57ac59a4fe06b79073306bcb1ce131c2c07a/vmlinuz-4.7.0-rc7-00004-gdb8c57a -append 'root=/dev/ram0 user=lkp job=/lkp/scheduled/vm-kbuild-yocto-x86_64-23/boot-1-yocto-minimal-x86_64.cgz-db8c57ac59a4fe06b79073306bcb1ce131c2c07a-20160726-23625-esavg0-0.yaml ARCH=x86_64 kconfig=x86_64-randconfig-s2-07251540 branch=linux-devel/devel-spot-201607251455 commit=db8c57ac59a4fe06b79073306bcb1ce131c2c07a BOOT_IMAGE=/pkg/linux/x86_64-randconfig-s2-07251540/gcc-4.4/db8c57ac59a4fe06b79073306bcb1ce131c2c07a/vmlinuz-4.7.0-rc7-00004-gdb8c57a max_uptime=600 RESULT_ROOT=/result/boot/1/vm-kbuild-yocto-x86_64/yocto-minimal-x86_64.cgz/x86_64-randconfig-s2-07251540/gcc-4.4/db8c57ac59a4fe06b79073306bcb1ce131c2c07a/0 LKP_SERVER=inn 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 systemd.log_level=err ignore_loglevel earlyprintk=ttyS0,115200 console=ttyS0,115200 console=tty0 vga=normal rw ip=::::vm-kbuild-yocto-x86_64-23::dhcp drbd.minor_count=8' -initrd /fs/sdf1/initrd-vm-kbuild-yocto-x86_64-23 -m 320 -smp 1 -device e1000,netdev=net0 -netdev user,id=net0 -boot order=nc -no-reboot -watchdog i6300esb -rtc base=localtime -drive file=/fs/sdf1/disk0-vm-kbuild-yocto-x86_64-23,media=disk,if=virtio -pidfile /dev/shm/kboot/pid-vm-kbuild-yocto-x86_64-23 -serial file:/dev/shm/kboot/serial-vm-kbuild-yocto-x86_64-23 -daemonize -display none -monitor null
Thanks,
Xiaolong
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