linux-kernel - [lkp] [x86/mm] 729ed6fc97: BUG: spinlock bad magic on CPU#0, v86d/194

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Date:	Wed, 30 Mar 2016 12:57:12 +0800
From:	kernel test robot <xiaolong.ye@...el.com>
To:	Andy Lutomirski <luto@...nel.org>
Cc:	LKML <linux-kernel@...r.kernel.org>, lkp@...org
Subject: [lkp] [x86/mm] 729ed6fc97: BUG: spinlock bad magic on CPU#0, v86d/194

FYI, we noticed the below changes on

https://git.kernel.org/pub/scm/linux/kernel/git/luto/linux.git x86/pcid
commit 729ed6fc971182a09c0869dbf8007ae5e538a04a ("x86/mm: Hold a spinlock when propagating TLB flushes")

As below, the log "BUG: spinlock bad magic on CPU#0, v86d/194" showed with your commit.

[    7.316403] hgafb: probe of hgafb.0 failed with error -22
[    7.317378] usbcore: registered new interface driver udlfb
[    7.318226] usbcore: registered new interface driver smscufx
[    7.320013] BUG: spinlock bad magic on CPU#0, v86d/194
[    7.320767]  lock: 0xffff88000f763310, .magic: 00000000, .owner: <none>/-1, .owner_cpu: 0
[    7.321958] CPU: 0 PID: 194 Comm: v86d Not tainted 4.5.0-rc2-00215-g729ed6f #1
[    7.323088]  ffff88000f763310 ffff88000f773b00 ffffffff815c7dcb 0000000000000000
[    7.324263]  ffff88000f773b20 ffffffff81101808 ffff88000f763310 0000000000000000
[    7.325484]  ffff88000f773b50 ffffffff81101a9f ffff88000f763000 ffff88000f763308
[    7.326688] Call Trace:
[    7.327230]  [<ffffffff815c7dcb>] dump_stack+0x4b/0x70
[    7.328015]  [<ffffffff81101808>] spin_dump+0x78/0xc0
[    7.338512]  [<ffffffff81101a9f>] do_raw_spin_lock+0x1af/0x1e0
[    7.339391]  [<ffffffff81c3a625>] _raw_spin_lock+0x15/0x20
[    7.340204]  [<ffffffff81050e7c>] propagate_tlb_flush+0x2c/0x70
[    7.341166]  [<ffffffff8105160e>] flush_tlb_mm_range+0x3e/0x120
[    7.342037]  [<ffffffff811c88b4>] move_page_tables+0x264/0x630
[    7.342903]  [<ffffffff811eee76>] shift_arg_pages+0xc6/0x1a0
[    7.343729]  [<ffffffff811efb2f>] setup_arg_pages+0x26f/0x280
[    7.344579]  [<ffffffff81248efb>] load_elf_binary+0x44b/0x1210
[    7.345447]  [<ffffffff81247d5f>] ? load_misc_binary+0x2df/0x410
[    7.346329]  [<ffffffff811eed9f>] ? put_arg_page+0x7f/0x90
[    7.347154]  [<ffffffff811ef1b8>] ? copy_strings+0x148/0x3c0
[    7.348099]  [<ffffffff811f097a>] search_binary_handler+0x5a/0xf0
[    7.348995]  [<ffffffff811f1037>] do_execveat_common+0x627/0x800
[    7.349980]  [<ffffffff811f123c>] do_execve+0x2c/0x30
[    7.363803]  [<ffffffff810cecb0>] call_usermodehelper_exec_async+0xf0/0x140
[    7.364811]  [<ffffffff810cebc0>] ? umh_complete+0x40/0x40
[    7.365627]  [<ffffffff81c3b21f>] ret_from_fork+0x3f/0x70
[    7.366462]  [<ffffffff810cebc0>] ? umh_complete+0x40/0x40
[    7.368685] v86d (194) used greatest stack depth: 13480 bytes left
[    7.436720] uvesafb: Getting VBE info block failed (eax=0x4f00, err=-3)
[    7.437735] uvesafb: vbe_init() failed with -22


FYI, raw QEMU command line is:

	qemu-system-x86_64 -enable-kvm -cpu SandyBridge -kernel /pkg/linux/x86_64-randconfig-s5-03250643/gcc-5/729ed6fc971182a09c0869dbf8007ae5e538a04a/vmlinuz-4.5.0-rc2-00215-g729ed6f -append 'root=/dev/ram0 user=lkp job=/lkp/scheduled/vm-kbuild-yocto-x86_64-61/bisect_boot-1-yocto-minimal-x86_64.cgz-x86_64-randconfig-s5-03250643-729ed6fc971182a09c0869dbf8007ae5e538a04a-20160325-54284-f93eiu-0.yaml ARCH=x86_64 kconfig=x86_64-randconfig-s5-03250643 branch=linux-devel/devel-spot-201603250547 commit=729ed6fc971182a09c0869dbf8007ae5e538a04a BOOT_IMAGE=/pkg/linux/x86_64-randconfig-s5-03250643/gcc-5/729ed6fc971182a09c0869dbf8007ae5e538a04a/vmlinuz-4.5.0-rc2-00215-g729ed6f max_uptime=600 RESULT_ROOT=/result/boot/1/vm-kbuild-yocto-x86_64/yocto-minimal-x86_64.cgz/x86_64-randconfig-s5-03250643/gcc-5/729ed6fc971182a09c0869dbf8007ae5e538a04a/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-yocto-x86_64-61::dhcp drbd.minor_count=8'  -initrd /fs/sdh1/initrd-vm-kbuild-yocto-x86_64-61 -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/sdh1/disk0-vm-kbuild-yocto-x86_64-61,media=disk,if=virtio -pidfile /dev/shm/kboot/pid-vm-kbuild-yocto-x86_64-61 -serial file:/dev/shm/kboot/serial-vm-kbuild-yocto-x86_64-61 -daemonize -display none -monitor null 




Thanks,
Xiaolong Ye

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