#xfstest TIME_FACTOR=2 LOAD_FACTOR=2 ./check 289

ext4-defragment-oops1

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kernel BUG at fs/ext4/inode.c:1440!
invalid opcode: 0000 [#1] SMP 
Modules linked in: xfs exportfs libcrc32c cpufreq_ondemand acpi_cpufreq freq_table mperf coretemp kvm_intel kvm crc32c_intel microcode sg button sd_mod crc_t10dif ahci libahci pata_acpi ata_generic dm_mirror dm_region_hash dm_log dm_mod
CPU 1 
Pid: 27506, comm: fio Not tainted 3.8.0-rc3+ #33                  /DH55TC                
RIP: 0010:[<ffffffff81333b9b>]  [<ffffffff81333b9b>] mpage_da_submit_io+0x41b/0x5b0
RSP: 0018:ffff880086319a48  EFLAGS: 00010202
RAX: ffff880097b96930 RBX: ffff880097b96930 RCX: 0000000000000000
RDX: 0000000000000003 RSI: 0000000000000001 RDI: ffffffff821372b0
RBP: ffff880086319bb8 R08: ffff880086319df8 R09: 0000000000000001
R10: ffff880097b96931 R11: 0000000000000003 R12: ffffea0002664818
R13: 0000000000000070 R14: ffff880086319be8 R15: 000000000003e870
FS:  00007f3bf46f7700(0000) GS:ffff880121a00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 000000008005003b
CR2: 00007f3be89377c8 CR3: 0000000034ba6000 CR4: 00000000000007e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400
Process fio (pid: 27506, threadinfo ffff880086318000, task ffff88010e0dcf00)
Stack:
 ffffffff82030f00 ffff880086319b58 ffff880086319df8 0000000000000000
 ffff880097b96931 0000000000000001 ffff880097b96930 000000001a801cc8
 ffff880086319ae8 0000000000034800 ffff88010e0a33e0 0000000000000077
Call Trace:
 [<ffffffff813398b9>] mpage_da_map_and_submit+0x369/0x3d0
 [<ffffffff81339c1b>] write_cache_pages_da+0x1db/0x6f0
 [<ffffffff8133a5c5>] ext4_da_writepages+0x495/0x8a0
 [<ffffffff811b4421>] do_writepages+0x51/0x70
 [<ffffffff8119fc24>] __filemap_fdatawrite_range+0x64/0x70
 [<ffffffff811a6a8b>] sys_fadvise64_64+0x25b/0x300
 [<ffffffff811a6b3e>] sys_fadvise64+0xe/0x10
 [<ffffffff818e9359>] system_call_fastpath+0x16/0x1b
Code: a0 fe ff ff 4c 8b 95 b0 fe ff ff 49 63 d1 48 83 c2 02 48 8b 34 d5 50 4a 2b 82 48 83 c6 01 45 85 c9 48 89 34 d5 50 4a 2b 82 74 04 <0f> 0b eb fe 41 0f b6 56 13 83 e2 01 48 63 f2 48 83 c6 02 48 8b 
RIP  [<ffffffff81333b9b>] mpage_da_submit_io+0x41b/0x5b0
 RSP <ffff880086319a48>
---[ end trace 2bbbb15465dadbfa ]---