linux-kernel - [lkp] [md] 8caa6068fa: kernel BUG at mm/slub.c:3656!

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Message-ID: <87pot4gd5s.fsf@yhuang-dev.intel.com>
Date:	Tue, 03 May 2016 09:09:51 +0800
From:	kernel test robot <ying.huang@...ux.intel.com>
TO:	Michal Hocko <mhocko@...e.com>
CC:	0day robot <fengguang.wu@...el.com>
Subject: [lkp] [md] 8caa6068fa: kernel BUG at mm/slub.c:3656!

FYI, we noticed the following commit:

https://github.com/0day-ci/linux Michal-Hocko/tree-wide-get-rid-of-__GFP_REPEAT-for-order-0-allocations-part-I/20160428-212857
commit 8caa6068fa57b7187daedbfa9507d5ba4f962a41 ("md: simplify free_params for kmalloc vs vmalloc fallback")

on test machine: vm-lkp-wsx03-1G: 1 threads qemu-system-x86_64 -enable-kvm -cpu host with 1G memory

caused below changes:



+------------------------------------------+------------+------------+
|                                          | 0b9466ab4a | 8caa6068fa |
+------------------------------------------+------------+------------+
| boot_successes                           | 10         | 2          |
| boot_failures                            | 0          | 6          |
| kernel_BUG_at_mm/slub.c                  | 0          | 6          |
| invalid_opcode:#[##]SMP                  | 0          | 6          |
| RIP:kfree                                | 0          | 6          |
| Kernel_panic-not_syncing:Fatal_exception | 0          | 6          |
| backtrace:do_vfs_ioctl                   | 0          | 6          |
| backtrace:SyS_ioctl                      | 0          | 6          |
+------------------------------------------+------------+------------+



[   15.781036] device-mapper: uevent: version 1.0.3
[   15.782750] device-mapper: ioctl: 4.34.0-ioctl (2015-10-28) initialised: dm-devel@...hat.com
[   15.785199] ------------[ cut here ]------------
[   15.786335] kernel BUG at mm/slub.c:3656!
[   15.787557] invalid opcode: 0000 [#1] SMP 
[   15.788798] Modules linked in: dm_mod rpcsec_gss_krb5 auth_rpcgss nfsv4 dns_resolver sg sr_mod cdrom ata_generic pata_acpi ppdev crc32c_intel snd_pcm snd_timer snd soundcore pcspkr serio_raw ata_piix i2c_piix4 libata parport_pc floppy parport acpi_cpufreq
[   15.795806] CPU: 0 PID: 415 Comm: dmsetup Not tainted 4.6.0-rc3-00055-g8caa606 #1
[   15.797800] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS Debian-1.8.2-1 04/01/2014
[   15.800016] task: ffff88003e87a440 ti: ffff88003f5d8000 task.ti: ffff88003f5d8000
[   15.802071] RIP: 0010:[<ffffffff811d99f1>]  [<ffffffff811d99f1>] kfree+0x131/0x170
[   15.804179] RSP: 0018:ffff88003f5dbcd0  EFLAGS: 00010246
[   15.805395] RAX: dead000000000100 RBX: ffff88003f5dbd28 RCX: 0000000000000000
[   15.806812] RDX: 0000000000000000 RSI: ffff88003f5dbd28 RDI: ffff88003f5dbd28
[   15.808348] RBP: ffff88003f5dbce8 R08: 0000000000000131 R09: 0000000000000000
[   15.809769] R10: ffffea0000fd76c0 R11: 0000000000000000 R12: 0000000000000000
[   15.811216] R13: ffffffff811944ca R14: ffff88003f5dbd28 R15: 0000000000000000
[   15.812635] FS:  00007fda6089c800(0000) GS:ffff880037000000(0000) knlGS:0000000000000000
[   15.814653] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   15.815906] CR2: 000055ad4817a000 CR3: 000000003ee67000 CR4: 00000000000006f0
[   15.817353] Stack:
[   15.818142]  000055ad48177120 0000000000000000 0000000000000000 ffff88003f5dbcf8
[   15.820375]  ffffffff811944ca ffff88003f5dbe88 ffffffffa01d6552 ffff88003f5dbd80
[   15.822589]  ffffffff811ce6a3 0000000100000001 0000000000000131 0000002200000004
[   15.824802] Call Trace:
[   15.825674]  [<ffffffff811944ca>] kvfree+0x2a/0x40
[   15.826803]  [<ffffffffa01d6552>] ctl_ioctl+0x262/0x520 [dm_mod]
[   15.828097]  [<ffffffff811ce6a3>] ? alloc_pages_vma+0xb3/0x230
[   15.829374]  [<ffffffffa01d6823>] dm_ctl_ioctl+0x13/0x20 [dm_mod]
[   15.830670]  [<ffffffff8120e4ff>] do_vfs_ioctl+0x8f/0x670
[   15.831903]  [<ffffffff813babb3>] ? security_file_ioctl+0x43/0x60
[   15.833219]  [<ffffffff8120eb59>] SyS_ioctl+0x79/0x90
[   15.834403]  [<ffffffff818f96b2>] entry_SYSCALL_64_fastpath+0x1a/0xa4
[   15.835747] Code: da 4c 89 ee ff d0 49 8b 04 24 48 85 c0 75 e6 65 ff 0d 7c 39 e3 7e e9 f9 fe ff ff 49 8b 02 f6 c4 40 75 0a 49 8b 42 20 a8 01 75 02 <0f> 0b 49 8b 02 31 f6 f6 c4 40 74 04 41 8b 72 6c 4c 89 d7 e8 07 
[   15.844575] RIP  [<ffffffff811d99f1>] kfree+0x131/0x170
[   15.845849]  RSP <ffff88003f5dbcd0>
[   15.846853] ---[ end trace 3d847d94459925d4 ]---
[   15.848721] Kernel panic - not syncing: Fatal exception


FYI, raw QEMU command line is:

	qemu-system-x86_64 -enable-kvm -cpu host -kernel /pkg/linux/x86_64-rhel/gcc-4.9/8caa6068fa57b7187daedbfa9507d5ba4f962a41/vmlinuz-4.6.0-rc3-00055-g8caa606 -append 'root=/dev/ram0 user=lkp job=/lkp/scheduled/vm-lkp-wsx03-1G-5/bisect_fsmark-1x-32t-1HDD-btrfs-9B-400M-fsyncBeforeClose-16d-256fpd-debian-x86_64-2015-02-07.cgz-x86_64-rhel-8caa6068fa57b7187daedbfa9507d5ba4f962a41-20160429-80077-zxsib7-0.yaml ARCH=x86_64 kconfig=x86_64-rhel branch=linux-devel/devel-hourly-2016042901 commit=8caa6068fa57b7187daedbfa9507d5ba4f962a41 BOOT_IMAGE=/pkg/linux/x86_64-rhel/gcc-4.9/8caa6068fa57b7187daedbfa9507d5ba4f962a41/vmlinuz-4.6.0-rc3-00055-g8caa606 max_uptime=2016 RESULT_ROOT=/result/fsmark/1x-32t-1HDD-btrfs-9B-400M-fsyncBeforeClose-16d-256fpd/vm-lkp-wsx03-1G/debian-x86_64-2015-02-07.cgz/x86_64-rhel/gcc-4.9/8caa6068fa57b7187daedbfa9507d5ba4f962a41/0 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-lkp-wsx03-1G-5::dhcp'  -initrd /fs/sdc1/initrd-vm-lkp-wsx03-1G-5 -m 1024 -smp 1 -device e1000,netdev=net0 -netdev user,id=net0,hostfwd=tcp::23604-:22 -boot order=nc -no-reboot -watchdog i6300esb -rtc base=localtime -drive file=/fs/sdc1/disk0-vm-lkp-wsx03-1G-5,media=disk,if=virtio -drive file=/fs/sdc1/disk1-vm-lkp-wsx03-1G-5,media=disk,if=virtio -pidfile /dev/shm/kboot/pid-vm-lkp-wsx03-1G-5 -serial file:/dev/shm/kboot/serial-vm-lkp-wsx03-1G-5 -daemonize -display none -monitor null 


To reproduce:

        git clone git://git.kernel.org/pub/scm/linux/kernel/git/wfg/lkp-tests.git
        cd lkp-tests
        bin/lkp install job.yaml  # job file is attached in this email
        bin/lkp run     job.yaml



Thanks,
Kernel Test Robot

View attachment "config-4.6.0-rc3-00055-g8caa606" of type "text/plain" (146965 bytes)

Download attachment "dmesg.xz" of type "application/x-xz" (13120 bytes)

View attachment "job.yaml" of type "text/plain" (3561 bytes)