loop2: p1 p2 p3 p4 < >
------------[ cut here ]------------
kernel BUG at fs/block_dev.c:1426!
invalid opcode: 0000 [#1] PREEMPT SMP KASAN
Dumping ftrace buffer:
   (ftrace buffer empty)
Modules linked in:
CPU: 0 PID: 12361 Comm: syz-executor5 Not tainted 4.9.111-g03c70fe #6
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
task: ffff88019b2ec800 task.stack: ffff8801cc030000
RIP: 0010:[<ffffffff81634ab5>]  [<ffffffff81634ab5>] blkdev_get+0x535/0x920 fs/block_dev.c:1426
RSP: 0018:ffff8801cc037888  EFLAGS: 00010212
RAX: 0000000000040000 RBX: ffff8801b61ff8c0 RCX: ffffc9000169c000
RDX: 0000000000000f7a RSI: ffffffff81634ab5 RDI: ffffffff8460dec4
RBP: ffff8801cc0379a0 R08: ffff88019b2ed110 R09: 0000000000000001
R10: ffff88019b2ec800 R11: 1ffff1003365da1d R12: ffff8801d9c11140
R13: 0000000000000000 R14: ffff8801d9c111d8 R15: ffff8801b61ff8d8
FS:  00007f1177862700(0000) GS:ffff8801db200000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007ffdc3db0ff8 CR3: 00000001a1ae9000 CR4: 00000000001606f0
DR0: 00000000200001c0 DR1: 00000000200001c0 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000600
Stack:
 ffff8801cc037930 ffff8801c9688c00 ffff8801d38ea200 1ffff10039806f17
 0000009d00000246 ffff8801d4115200 0000000041b58ab3 ffffffff843d552e
 ffffffff81634580 ffffffff839f9669 ffff880100000004 0000000000000000
Call Trace:
 [<ffffffff816350b5>] blkdev_open+0x1a5/0x250 fs/block_dev.c:1571
 [<ffffffff81569cd3>] do_dentry_open+0x703/0xc80 fs/open.c:766
 [<ffffffff8156d4bc>] vfs_open+0x11c/0x210 fs/open.c:879
 [<ffffffff815a45f8>] do_last fs/namei.c:3410 [inline]
 [<ffffffff815a45f8>] path_openat+0x758/0x3590 fs/namei.c:3534
 [<ffffffff815ab6f7>] do_filp_open+0x197/0x270 fs/namei.c:3568
 [<ffffffff8156decd>] do_sys_open+0x30d/0x5c0 fs/open.c:1072
 [<ffffffff8156e1ad>] SYSC_open fs/open.c:1090 [inline]
 [<ffffffff8156e1ad>] SyS_open+0x2d/0x40 fs/open.c:1085
 [<ffffffff81006316>] do_syscall_64+0x1a6/0x490 arch/x86/entry/common.c:282
 [<ffffffff839f8cd3>] entry_SYSCALL_64_after_swapgs+0x5d/0xdb
Code: 10 ff ff ff 0f 84 f9 02 00 00 48 89 85 f0 fe ff ff e8 70 9f d2 ff 48 8b 85 f0 fe ff ff 48 85 c0 0f 84 9f 00 00 00 e8 5b 9f d2 ff <0f> 0b e8 54 9f d2 ff 4c 89 f2 48 b8 00 00 00 00 00 fc ff df 48 
RIP  [<ffffffff81634ab5>] blkdev_get+0x535/0x920 fs/block_dev.c:1426
 RSP <ffff8801cc037888>
---[ end trace 06d9da893344f6cd ]---