audit: type=1800 audit(1565446829.338:137): pid=7698 uid=0 auid=4294967295 ses=4294967295 subj=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 op="collect_data" cause="failed(directio)" comm="syz-executor.0" name="file0" dev="sda1" ino=16629 res=0
BUG: unable to handle kernel paging request at fffffff6881a1df0
IP: dummy_set_vf_spoofchk+0x7a/0xb0 drivers/net/dummy.c:219
PGD 766d067 P4D 766d067 PUD 0 
Oops: 0002 [#1] PREEMPT SMP KASAN
Modules linked in:
CPU: 0 PID: 7701 Comm: syz-executor.5 Not tainted 4.14.138 #34
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
task: ffff88809b70a1c0 task.stack: ffff888052408000
audit: type=1804 audit(1565446829.368:138): pid=7698 uid=0 auid=4294967295 ses=4294967295 subj=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 op="invalid_pcr" cause="open_writers" comm="syz-executor.0" name="/root/syzkaller-testdir872516332/syzkaller.Y5eWuW/24/file0" dev="sda1" ino=16629 res=1
RIP: 0010:dummy_set_vf_spoofchk+0x7a/0xb0 drivers/net/dummy.c:219
RSP: 0018:ffff88805240f2b0 EFLAGS: 00010246
RAX: 0000000000000000 RBX: fffffff6881a1de0 RCX: ffffc90006c34000
RDX: 0000000000000000 RSI: ffffffff83a47804 RDI: fffffff6881a1df0
audit: type=1804 audit(1565446829.378:139): pid=7698 uid=0 auid=4294967295 ses=4294967295 subj=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 op="invalid_pcr" cause="ToMToU" comm="syz-executor.0" name="/root/syzkaller-testdir872516332/syzkaller.Y5eWuW/24/file0" dev="sda1" ino=16629 res=1
RBP: ffff88805240f2c8 R08: 1ffff1100a481e99 R09: ffff88805240f4c8
R10: ffffed100a481ea5 R11: ffff88805240f52f R12: ffff88805f0be340
R13: 0000000000000001 R14: ffff88805240f610 R15: ffff8880a170a5e8
FS:  00007f6b50c90700(0000) GS:ffff8880aee00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
kobject: 'loop4' (ffff8880a4a86260): kobject_uevent_env
CR2: fffffff6881a1df0 CR3: 0000000099728000 CR4: 00000000001406f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 do_setvfinfo net/core/rtnetlink.c:1855 [inline]
 do_setlink+0x1834/0x2d50 net/core/rtnetlink.c:2135
kobject: 'loop4' (ffff8880a4a86260): fill_kobj_path: path = '/devices/virtual/block/loop4'
kobject: 'loop2' (ffff8880a49bf2a0): kobject_uevent_env
kobject: 'loop2' (ffff8880a49bf2a0): fill_kobj_path: path = '/devices/virtual/block/loop2'
kobject: 'loop4' (ffff8880a4a86260): kobject_uevent_env
 rtnl_setlink+0x225/0x320 net/core/rtnetlink.c:2303
kobject: 'loop4' (ffff8880a4a86260): fill_kobj_path: path = '/devices/virtual/block/loop4'
 rtnetlink_rcv_msg+0x3eb/0xb70 net/core/rtnetlink.c:4285
 netlink_rcv_skb+0x14f/0x3c0 net/netlink/af_netlink.c:2432
 rtnetlink_rcv+0x1d/0x30 net/core/rtnetlink.c:4297
 netlink_unicast_kernel net/netlink/af_netlink.c:1286 [inline]
 netlink_unicast+0x45d/0x640 net/netlink/af_netlink.c:1312
 netlink_sendmsg+0x7c4/0xc60 net/netlink/af_netlink.c:1877
 sock_sendmsg_nosec net/socket.c:646 [inline]
 sock_sendmsg+0xce/0x110 net/socket.c:656
 ___sys_sendmsg+0x70a/0x840 net/socket.c:2062
 __sys_sendmsg+0xb9/0x140 net/socket.c:2096
 SYSC_sendmsg net/socket.c:2107 [inline]
 SyS_sendmsg+0x2d/0x50 net/socket.c:2103
 do_syscall_64+0x1e8/0x640 arch/x86/entry/common.c:292
 entry_SYSCALL_64_after_hwframe+0x42/0xb7
RIP: 0033:0x459829
RSP: 002b:00007f6b50c8fc78 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 0000000000459829
RDX: 0000000000000000 RSI: 0000000020000240 RDI: 0000000000000003
RBP: 000000000075bf20 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00007f6b50c906d4
R13: 00000000004c7751 R14: 00000000004dcf40 R15: 00000000ffffffff
kobject: 'loop2' (ffff8880a49bf2a0): kobject_uevent_env
Code: 48 8d 1c d0 48 b8 00 00 00 00 00 fc ff df 48 8d 7b 10 48 89 fa 48 c1 ea 03 0f b6 04 02 48 89 fa 83 e2 07 38 d0 7f 04 84 c0 75 16 <44> 88 6b 10 45 31 e4 e8 0a 65 b8 fd 44 89 e0 5b 41 5c 41 5d 5d 
kobject: 'loop2' (ffff8880a49bf2a0): fill_kobj_path: path = '/devices/virtual/block/loop2'
RIP: dummy_set_vf_spoofchk+0x7a/0xb0 drivers/net/dummy.c:219 RSP: ffff88805240f2b0
CR2: fffffff6881a1df0
---[ end trace b8b066bb8b5210e1 ]---