generic/482: always failed with xfs

["Dai, XiangX" <xiangx.dai@intel.com>]

generic/482 is unstable when we run it with xfs (it runs well with other 
fs type)

run 10 times, failed 6 times
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generic/482    [failed, exit status 1]- output mismatch (see 
/lkp/benchmarks/xfstests/results//generic/482.out.bad)
     --- tests/generic/482.out    2018-07-09 10:39:04.000000000 +0000
     +++ /lkp/benchmarks/xfstests/results//generic/482.out.bad 
2018-08-16 14:38:22.306000000 +0000
     @@ -1,2 +1,3 @@
      QA output created by 482
     -Silence is golden
     +_check_xfs_filesystem: filesystem on /dev/vdd is inconsistent (r)
     +(see /lkp/benchmarks/xfstests/results//generic/482.full for details)
     ...
     (Run 'diff -u tests/generic/482.out 
/lkp/benchmarks/xfstests/results//generic/482.out.bad'  to see the 
entire diff)

------
482.full
------
# ./ltp/fsstress -w -d /fs/scratch -n 512 -p 4
seed = 1534216816
mark mkfs has entry number 624
next fua is entry number 674
=== replay to 674 ===
_check_xfs_filesystem: filesystem on /dev/vdd is inconsistent (r)
*** xfs_repair -n output ***
Phase 1 - find and verify superblock...
Phase 2 - using internal log
         - zero log...
         - scan filesystem freespace and inode maps...
         - found root inode chunk
Phase 3 - for each AG...
         - scan (but don't clear) agi unlinked lists...
         - process known inodes and perform inode discovery...
         - agno = 0
         - agno = 1
         - agno = 2
bad symlink header ino 268697729, file block 0, disk block 33587215
problem with symbolic link in inode 268697729
would have cleared inode 268697729
         - agno = 3
         - process newly discovered inodes...
Phase 4 - check for duplicate blocks...
         - setting up duplicate extent list...
         - check for inodes claiming duplicate blocks...
         - agno = 0
         - agno = 1
         - agno = 2
entry "l6" in shortform directory 268697728 references free inode 268697729
would have junked entry "l6" in directory inode 268697728
         - agno = 3
bad symlink header ino 268697729, file block 0, disk block 33587215
problem with symbolic link in inode 268697729
would have cleared inode 268697729
No modify flag set, skipping phase 5
Phase 6 - check inode connectivity...
         - traversing filesystem ...
entry "l6" in shortform directory inode 268697728 points to free inode 
268697729
would junk entry
         - traversal finished ...
         - moving disconnected inodes to lost+found ...
Phase 7 - verify link counts...
Maximum metadata LSN (1:338) is ahead of log (1:41).
Would format log to cycle 4.
No modify flag set, skipping filesystem flush and exiting.
*** end xfs_repair output
*** mount output ***
rootfs on / type rootfs (rw)
sysfs on /sys type sysfs (rw,nosuid,nodev,noexec,relatime)
proc on /proc type proc (rw,nosuid,nodev,noexec,relatime)
devtmpfs on /dev type devtmpfs 
(rw,nosuid,size=1776968k,nr_inodes=444242,mode=755)
securityfs on /sys/kernel/security type securityfs 
(rw,nosuid,nodev,noexec,relatime)
selinuxfs on /sys/fs/selinux type selinuxfs (rw,relatime)
tmpfs on /dev/shm type tmpfs (rw,nosuid,nodev)
devpts on /dev/pts type devpts 
(rw,nosuid,noexec,relatime,gid=5,mode=620,ptmxmode=000)
tmpfs on /run type tmpfs (rw,nosuid,nodev,mode=755)
tmpfs on /run/lock type tmpfs (rw,nosuid,nodev,noexec,relatime,size=5120k)
tmpfs on /sys/fs/cgroup type tmpfs (ro,nosuid,nodev,noexec,mode=755)
cgroup on /sys/fs/cgroup/systemd type cgroup 
(rw,nosuid,nodev,noexec,relatime,xattr,release_agent=/lib/systemd/systemd-cgroups-agent,name=systemd)
pstore on /sys/fs/pstore type pstore (rw,nosuid,nodev,noexec,relatime)
cgroup on /sys/fs/cgroup/cpuset type cgroup 
(rw,nosuid,nodev,noexec,relatime,cpuset)
cgroup on /sys/fs/cgroup/rdma type cgroup 
(rw,nosuid,nodev,noexec,relatime,rdma)
cgroup on /sys/fs/cgroup/cpu type cgroup 
(rw,nosuid,nodev,noexec,relatime,cpu)
cgroup on /sys/fs/cgroup/devices type cgroup 
(rw,nosuid,nodev,noexec,relatime,devices)
cgroup on /sys/fs/cgroup/net_cls type cgroup 
(rw,nosuid,nodev,noexec,relatime,net_cls)
cgroup on /sys/fs/cgroup/blkio type cgroup 
(rw,nosuid,nodev,noexec,relatime,blkio)
cgroup on /sys/fs/cgroup/hugetlb type cgroup 
(rw,nosuid,nodev,noexec,relatime,hugetlb)
cgroup on /sys/fs/cgroup/freezer type cgroup 
(rw,nosuid,nodev,noexec,relatime,freezer)
cgroup on /sys/fs/cgroup/perf_event type cgroup 
(rw,nosuid,nodev,noexec,relatime,perf_event)
cgroup on /sys/fs/cgroup/pids type cgroup 
(rw,nosuid,nodev,noexec,relatime,pids)
cgroup on /sys/fs/cgroup/memory type cgroup 
(rw,nosuid,nodev,noexec,relatime,memory)
mqueue on /dev/mqueue type mqueue (rw,relatime)
hugetlbfs on /dev/hugepages type hugetlbfs (rw,relatime,pagesize=2M)
debugfs on /sys/kernel/debug type debugfs (rw,relatime)
sunrpc on /run/rpc_pipefs type rpc_pipefs (rw,relatime)
systemd-1 on /proc/sys/fs/binfmt_misc type autofs 
(rw,relatime,fd=37,pgrp=1,timeout=0,minproto=5,maxproto=5,direct,pipe_ino=1500)
configfs on /sys/kernel/config type configfs (rw,relatime)
tmp on /tmp type tmpfs (rw,relatime)
inn:/result on /inn/result type nfs 
(rw,relatime,vers=3,rsize=1048576,wsize=1048576,namlen=255,hard,proto=tcp,timeo=600,retrans=2,sec=sys,mountaddr=192.168.1.1,mountvers=3,mountport=32955,mountproto=udp,local_lock=none,addr=192.168.1.1)
*** end mount output
device-mapper: remove ioctl on logwrites-test failed: No such device or 
address
Command failed

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