BUG: unable to handle kernel paging request at 00000000df0f9ac9
IP: [<000000006432f0b4>] fuse_dev_do_write+0x1821/0x22c0 fs/fuse/dev.c:1916
PGD 21fffb067 [  430.004825] PUD 21fff9067 
Oops: 0000 [#1] PREEMPT SMP KASAN
Modules linked in:
CPU: 1 PID: 17923 Comm: syz-executor.0 Not tainted 4.9.181+ #6
task: 000000004baf2d1b task.stack: 0000000009279a10
RIP: 0010:[<ffffffff818708d1>]  [<000000006432f0b4>] fuse_dev_do_write+0x1821/0x22c0 fs/fuse/dev.c:1916
RSP: 0018:ffff8801866bf9a8  EFLAGS: 00010a07
RAX: dffffc0000000000 RBX: 0000000000000000 RCX: ffffc90001d59000
RDX: 1ffff100509fe1ff RSI: ffffffff8187085d RDI: ffff8801894c3c10
RBP: ffff8801866bfba0 R08: ffff880184ff1000 R09: 0000000000000001
R10: 0000000000000000 R11: 0000000000000001 R12: ffff8801894c3b60
R13: ffff880284ff0fff R14: ffff8801c6956000 R15: ffff8801866bfbe0
FS:  00007f8c721aa700(0000) GS:ffff8801db700000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: ffffed00509fe1ff CR3: 00000001897ba000 CR4: 00000000001606b0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Stack:
 0000000000000000 0000000000000000 ffff8801894c3b60 ffff8801894c3c10
 0000000000000001 ffff880100001000 ffff8801894c3bfc ffff8801894c3c08
 ffff8801c6956008 ffff8801894c3b90 ffff8801c6956010 ffff88018669e600
Call Trace:
 [<000000007e964bb4>] fuse_dev_write+0x144/0x1d0 fs/fuse/dev.c:1955
 [<000000008c0ec7e3>] new_sync_write fs/read_write.c:498 [inline]
 [<000000008c0ec7e3>] __vfs_write+0x3c1/0x560 fs/read_write.c:511
 [<000000000f0cfa40>] vfs_write+0x185/0x520 fs/read_write.c:559
 [<00000000ab589c4c>] SYSC_write fs/read_write.c:607 [inline]
 [<00000000ab589c4c>] SyS_write+0x121/0x270 fs/read_write.c:599
 [<00000000412cff85>] do_syscall_64+0x1ad/0x5c0 arch/x86/entry/common.c:288
 [<0000000086c4be54>] entry_SYSCALL_64_after_swapgs+0x5d/0xdb
Code: c0 74 08 3c 03 0f 8e cf 06 00 00 41 8b 84 24 b0 00 00 00 44 8d 68 ff 48 b8 00 00 00 00 00 fc ff df 4d 01 c5 4c 89 ea 48 c1 ea 03 <0f> b6 04 02 4c 89 ea 83 e2 07 38 d0 7f 08 84 c0 0f 85 75 06 00 
RIP  [<000000006432f0b4>] fuse_dev_do_write+0x1821/0x22c0 fs/fuse/dev.c:1916
 RSP <ffff8801866bf9a8>
CR2: ffffed00509fe1ff
---[ end trace 784d86e1ae15cdfb ]---