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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: 15339 Comm: syz-executor0 Not tainted 4.9.111-g03c70fe #6
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
task: ffff8801a1680000 task.stack: ffff8801b9598000
RIP: 0010:[<ffffffff81634ab5>]  [<ffffffff81634ab5>] blkdev_get+0x535/0x920 fs/block_dev.c:1426
RSP: 0018:ffff8801b959f888  EFLAGS: 00010212
RAX: 0000000000040000 RBX: ffff8801bddb2840 RCX: ffffc9000088d000
RDX: 0000000000000c02 RSI: ffffffff81634ab5 RDI: ffffffff8460dec4
RBP: ffff8801b959f9a0 R08: ffff8801a1680910 R09: 0000000000000001
R10: ffff8801a1680000 R11: 1ffff100342d011d R12: ffff8801cbe00b80
R13: 0000000000000000 R14: ffff8801cbe00c18 R15: ffff8801bddb2858
FS:  00007ff80405b700(0000) GS:ffff8801db200000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f320e797000 CR3: 00000001ccc0e000 CR4: 00000000001606f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Stack:
 ffff8801b959f930 ffff8801da0bc600 0000000000000000 1ffff100372b3f17
 0000009d00000246 ffff8801da2de000 0000000041b58ab3 ffffffff843d552e
 ffffffff81634580 0000000000000000 ffff880100000004 0000000000000246
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 <ffff8801b959f888>
---[ end trace ba50fbf8b0488213 ]---