Hi,
On 08/23/2016 03:45 PM, kernel test robot wrote:
FYI, we noticed the following commit:
https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git master
commit 994cdc133173fd9d69eae45cd228eec21dbed080 ("btrfs: update btrfs_space_info's
bytes_may_use timely")
in testcase: xfstests
with following parameters:
disk: 4HDD
fs: btrfs
test: generic-quick1
on test machine: 4 threads Sandy Bridge with 6G memory
caused below changes:
[ 110.547115] BTRFS info (device dm-0): has skinny extents
[ 110.617734] BTRFS info (device dm-0): checking UUID tree
[ 110.698954] ------------[ cut here ]------------
[ 110.704891] WARNING: CPU: 0 PID: 14378 at fs/btrfs/extent-tree.c:10030
btrfs_free_block_groups+0x29b/0x420 [btrfs]
[ 110.719052] Modules linked in: dm_flakey dm_mod rpcsec_gss_krb5 auth_rpcgss
nfsv4 dns_resolver netconsole btrfs xor raid6_pq sg sd_mod ata_generic
pata_acpi x86_pkg_temp_thermal intel_powerclamp coretemp kvm_intel kvm
snd_hda_codec_hdmi irqbypass eeepc_wmi crct10dif_pclmul crc32_pclmul i915
crc32c_intel asus_wmi sparse_keymap ghash_clmulni_intel rfkill ppdev
snd_hda_codec_realtek drm_kms_helper syscopyarea sysfillrect sysimgblt
snd_hda_codec_generic aesni_intel fb_sys_fops lrw gf128mul glue_helper
ablk_helper cryptd pcspkr drm serio_raw ata_piix pata_via snd_hda_intel
snd_hda_codec snd_hda_core snd_hwdep snd_pcm snd_timer libata snd soundcore
shpchp wmi parport_pc parport tpm_infineon video
[ 110.788309] CPU: 0 PID: 14378 Comm: umount Not tainted
4.7.0-rc6-00079-g994cdc1 #1
[ 110.796881] Hardware name: System manufacturer System Product Name/P8H67-M
PRO, BIOS 1002 04/01/2011
[ 110.807039] 0000000000000000 ffff88019966fcf0 ffffffff8143669b
0000000000000000
[ 110.815555] 0000000000000000 ffff88019966fd30 ffffffff8107d3fb
0000272e00000000
[ 110.824058] ffff880199742088 ffff88007e978000 ffff880199742000
ffff880199742400
[ 110.832559] Call Trace:
[ 110.836013] [<ffffffff8143669b>] dump_stack+0x63/0x88
[ 110.842146] [<ffffffff8107d3fb>] __warn+0xcb/0xf0
[ 110.847934] [<ffffffff8107d4ed>] warn_slowpath_null+0x1d/0x20
[ 110.854774] [<ffffffffa06091ab>] btrfs_free_block_groups+0x29b/0x420 [btrfs]
[ 110.862920] [<ffffffffa061b160>] close_ctree+0x190/0x370 [btrfs]
[ 110.870015] [<ffffffff8121f1e9>] ? evict_inodes+0x189/0x1a0
[ 110.876687] [<ffffffffa05eb9c9>] btrfs_put_super+0x19/0x20 [btrfs]
[ 110.883959] [<ffffffff81203acf>] generic_shutdown_super+0x6f/0x100
[ 110.891228] [<ffffffff81203df2>] kill_anon_super+0x12/0x20
[ 110.897807] [<ffffffffa05ec7a8>] btrfs_kill_super+0x18/0x110 [btrfs]
[ 110.905250] [<ffffffff81203fa3>] deactivate_locked_super+0x43/0x70
[ 110.912504] [<ffffffff8120448a>] deactivate_super+0x5a/0x60
[ 110.919134] [<ffffffff8122288f>] cleanup_mnt+0x3f/0x90
[ 110.925330] [<ffffffff81222922>] __cleanup_mnt+0x12/0x20
[ 110.931700] [<ffffffff8109b138>] task_work_run+0x88/0xc0
[ 110.938068] [<ffffffff81003312>] exit_to_usermode_loop+0xc2/0xd0
[ 110.945123] [<ffffffff81003c31>] syscall_return_slowpath+0xa1/0xb0
[ 110.952350] [<ffffffff819105fa>] entry_SYSCALL_64_fastpath+0xa2/0xa4
[ 110.959746] ---[ end trace 58ee3d80a0e5b015 ]---
[ 110.960290] systemd-journald[142]: Compressed data object 695 -> 516
OK, thanks for the report.
I forgot to run dm-flakey related xfstests test cases when testing this
patch, really sorry.
I'll look into this problem.
Regards,
Xiaoguang Wang
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,
Xiaolong
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