audit: type=1400 audit(1539717684.115:55): avc:  denied  { create } for  pid=7991 comm="syz-executor2" scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tclass=netlink_generic_socket permissive=0
------------[ cut here ]------------
kernel BUG at fs/ext4/inode.c:1907!
invalid opcode: 0000 [#1] PREEMPT [  162.133029] audit: type=1400 audit(1539717684.195:56): avc:  denied  { relabelto } for  pid=8035 comm="syz-executor5" name="UNIX" dev="sockfs" ino=25087 scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=system_u:object_r:devicekit_disk_exec_t:s0 tclass=unix_stream_socket permissive=0
audit: type=1400 audit(1539717684.195:57): avc:  denied  { create } for  pid=8036 comm="syz-executor2" scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tclass=netlink_generic_socket permissive=0
SMP KASAN
Modules linked in:
CPU: 1 PID: 352 Comm: jbd2/sda1-8 Not tainted 4.4.161+ #110
task: ffff8800b9e95f00 task.stack: ffff8800b9690000
RIP: 0010:[<ffffffff8165225e>]  [<ffffffff8165225e>] ext4_writepage+0x105e/0x16c0 fs/ext4/inode.c:1907
RSP: 0018:ffff8800b96974c8  EFLAGS: 00010293
RAX: ffff8800b9e95f00 RBX: 0000000000048204 RCX: ffffea00028996c0
RDX: 0000000000000000 RSI: ffffffff8165225e RDI: ffff8801ce8d3210
RBP: ffff8800b96975c8 R08: 00000000000225c0 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000
R13: ffffffff831a2278 R14: ffffea00028996c0 R15: ffff8800b9697708
FS:  0000000000000000(0000) GS:ffff8801db700000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000020e131ff CR3: 00000001d7c1b000 CR4: 00000000001606b0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Stack:
 ffff8800b96975b8 ffffffff813b5443 ffffea00028996d0 ffffea00028996c8
 1ffff100172d2ea4 ffff8800b9697b50 ffff8801ce8d31c0 ffff8800b96976b8
 0000100000000000 ffffea00028996c0 ffff8800b9e967c0 0000000041b58ab3
Call Trace:
 [<ffffffff813d0b64>] __writepage+0x64/0xc0 mm/page-writeback.c:2296
 [<ffffffff813d1875>] write_cache_pages+0x545/0xd90 mm/page-writeback.c:2234
 [<ffffffff813d5cba>] generic_writepages+0xda/0x150 mm/page-writeback.c:2320
 [<ffffffff817647eb>] journal_submit_inode_data_buffers fs/jbd2/commit.c:203 [inline]
 [<ffffffff817647eb>] journal_submit_data_buffers fs/jbd2/commit.c:234 [inline]
 [<ffffffff817647eb>] jbd2_journal_commit_transaction+0xeeb/0x6b40 fs/jbd2/commit.c:552
 [<ffffffff8177d71a>] kjournald2+0x22a/0x830 fs/jbd2/journal.c:223
 [<ffffffff81134038>] kthread+0x268/0x300 kernel/kthread.c:211
 [<ffffffff82705f05>] ret_from_fork+0x55/0x80 arch/x86/entry/entry_64.S:510
Code: 00 00 00 00 fc ff df 48 c1 eb 03 80 3c 03 00 0f 84 e8 f0 ff ff 48 c7 c7 80 5e 83 82 e8 bc d5 e2 ff e9 d7 f0 ff ff e8 a2 4c cb ff <0f> 0b e8 9b 4c cb ff 48 c7 c2 00 ea 8b 82 be 12 02 00 00 48 c7 
RIP  [<ffffffff8165225e>] ext4_writepage+0x105e/0x16c0 fs/ext4/inode.c:1907
 RSP <ffff8800b96974c8>
device lo entered promiscuous mode
---[ end trace fbf2371ebf4cda2f ]---