BUG: unable to handle page fault for address: ffffed105cc3ebff
#PF: supervisor read access in kernel mode
#PF: error_code(0x0000) - not-present page
PGD 23fff3067 P4D 23fff3067 PUD 23fff1067 PMD 0 
Oops: 0000 [#1] PREEMPT SMP KASAN
CPU: 0 PID: 27788 Comm: syz-executor.1 Not tainted 5.4.161-syzkaller-00007-g2426795494c7 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010:fuse_dev_do_write+0x4c83/0x6b90 fs/fuse/dev.c:1929
Code: e8 48 c1 e8 03 49 bc 00 00 00 00 00 fc ff df 42 8a 04 20 84 c0 0f 85 d6 1b 00 00 8b 6d 00 ff cd 48 01 dd 48 89 e8 48 c1 e8 03 <42> 8a 04 20 84 c0 0f 85 d8 1b 00 00 c6 45 00 00 48 8b 44 24 58 42
RSP: 0018:ffff8881ea3ffbc0 EFLAGS: 00010a07
RAX: 1ffff1105cc3ebff RBX: ffff8881e61f6000 RCX: dffffc0000000000
RDX: ffffc90000144000 RSI: 0000000000000042 RDI: ffff8881dee0fe28
RBP: ffff8882e61f5fff R08: ffffffff81d38909 R09: fffff94000d5e2f7
R10: fffff94000d5e2f7 R11: 0000000000000000 R12: dffffc0000000000
R13: ffff8881eba4d800 R14: ffff8881e23a40d0 R15: 0000000000000000
FS:  00007f57d4bb1700(0000) GS:ffff8881f6e00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: ffffed105cc3ebff CR3: 00000001dbcc1000 CR4: 00000000003406f0
DR0: fffffffffffffffd DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000600
Call Trace:
 fuse_dev_write+0x10e/0x170 fs/fuse/dev.c:1966
 call_write_iter include/linux/fs.h:1976 [inline]
 new_sync_write fs/read_write.c:483 [inline]
 __vfs_write+0x506/0x6b0 fs/read_write.c:496
 vfs_write+0x212/0x4e0 fs/read_write.c:558
 ksys_write+0x13f/0x240 fs/read_write.c:611
 do_syscall_64+0xcb/0x1e0 arch/x86/entry/common.c:290
 entry_SYSCALL_64_after_hwframe+0x44/0xa9
RIP: 0033:0x7f57d5a3b059
Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f57d4bb1168 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 00007f57d5b4df60 RCX: 00007f57d5a3b059
RDX: 0000000000000010 RSI: 00000000200042c0 RDI: 0000000000000003
RBP: 00007f57d5a9508d R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007ffe3d715b9f R14: 00007f57d4bb1300 R15: 0000000000022000
Modules linked in:
CR2: ffffed105cc3ebff
---[ end trace 3ef254b3bb23484e ]---
RIP: 0010:fuse_dev_do_write+0x4c83/0x6b90 fs/fuse/dev.c:1929
Code: e8 48 c1 e8 03 49 bc 00 00 00 00 00 fc ff df 42 8a 04 20 84 c0 0f 85 d6 1b 00 00 8b 6d 00 ff cd 48 01 dd 48 89 e8 48 c1 e8 03 <42> 8a 04 20 84 c0 0f 85 d8 1b 00 00 c6 45 00 00 48 8b 44 24 58 42
RSP: 0018:ffff8881ea3ffbc0 EFLAGS: 00010a07
RAX: 1ffff1105cc3ebff RBX: ffff8881e61f6000 RCX: dffffc0000000000
RDX: ffffc90000144000 RSI: 0000000000000042 RDI: ffff8881dee0fe28
RBP: ffff8882e61f5fff R08: ffffffff81d38909 R09: fffff94000d5e2f7
R10: fffff94000d5e2f7 R11: 0000000000000000 R12: dffffc0000000000
R13: ffff8881eba4d800 R14: ffff8881e23a40d0 R15: 0000000000000000
FS:  00007f57d4bb1700(0000) GS:ffff8881f6e00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: ffffed105cc3ebff CR3: 00000001dbcc1000 CR4: 00000000003406f0
DR0: fffffffffffffffd DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000600
----------------
Code disassembly (best guess):
   0:	e8 48 c1 e8 03       	callq  0x3e8c14d
   5:	49 bc 00 00 00 00 00 	movabs $0xdffffc0000000000,%r12
   c:	fc ff df
   f:	42 8a 04 20          	mov    (%rax,%r12,1),%al
  13:	84 c0                	test   %al,%al
  15:	0f 85 d6 1b 00 00    	jne    0x1bf1
  1b:	8b 6d 00             	mov    0x0(%rbp),%ebp
  1e:	ff cd                	dec    %ebp
  20:	48 01 dd             	add    %rbx,%rbp
  23:	48 89 e8             	mov    %rbp,%rax
  26:	48 c1 e8 03          	shr    $0x3,%rax
* 2a:	42 8a 04 20          	mov    (%rax,%r12,1),%al <-- trapping instruction
  2e:	84 c0                	test   %al,%al
  30:	0f 85 d8 1b 00 00    	jne    0x1c0e
  36:	c6 45 00 00          	movb   $0x0,0x0(%rbp)
  3a:	48 8b 44 24 58       	mov    0x58(%rsp),%rax
  3f:	42                   	rex.X