BUG: unable to handle page fault for address: ffffed105b67b1ff
#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: 421 Comm: syz-executor.0 Not tainted 5.4.283-syzkaller-04981-g1cca65ac6abc #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/06/2024
RIP: 0010:fuse_dev_do_write+0x2210/0x4fd0 fs/fuse/dev.c:1941
Code: ae b3 ff 4d 8b 3f 4c 89 e0 48 c1 e8 03 0f b6 04 18 84 c0 0f 85 86 28 00 00 45 8b 24 24 41 ff cc 4d 01 fc 4c 89 e0 48 c1 e8 03 <0f> b6 04 18 84 c0 0f 85 87 28 00 00 41 c6 04 24 00 41 80 3c 1e 00
RSP: 0018:ffff8881f0b2f7e0 EFLAGS: 00010a07
RAX: 1ffff1105b67b1ff RBX: dffffc0000000000 RCX: ffff8881f31f8000
RDX: 0000000000000000 RSI: 00000000000007e0 RDI: 00000000000007e0
RBP: ffff8881f0b2fb30 R08: ffffffff81e06fad R09: fffff94000ef7b77
R10: 0000000000000000 R11: dffffc0000000001 R12: ffff8882db3d8fff
R13: 0000000000000010 R14: 1ffff1103b6bd81e R15: ffff8881db3d9000
FS:  00007f71168826c0(0000) GS:ffff8881f6e00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: ffffed105b67b1ff CR3: 00000001db5c1000 CR4: 00000000003406b0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 fuse_dev_write+0x15b/0x1e0 fs/fuse/dev.c:1978
 call_write_iter include/linux/fs.h:1989 [inline]
 new_sync_write fs/read_write.c:483 [inline]
 __vfs_write+0x5d3/0x750 fs/read_write.c:496
 vfs_write+0x206/0x4e0 fs/read_write.c:558
 ksys_write+0x199/0x2c0 fs/read_write.c:611
 do_syscall_64+0xca/0x1c0 arch/x86/entry/common.c:290
 entry_SYSCALL_64_after_hwframe+0x5c/0xc1
RIP: 0033:0x455ca9
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 b4 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f71168820d8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 000000000055bf40 RCX: 0000000000455ca9
RDX: 0000000000000010 RSI: 00000000200022c0 RDI: 0000000000000003
RBP: 00000000004a1662 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00000000004a07fb
R13: 000000000000000b R14: 000000000055bf40 R15: 00007ffd18379778
Modules linked in:
CR2: ffffed105b67b1ff
---[ end trace c5131e5032ec1431 ]---
RIP: 0010:fuse_dev_do_write+0x2210/0x4fd0 fs/fuse/dev.c:1941
Code: ae b3 ff 4d 8b 3f 4c 89 e0 48 c1 e8 03 0f b6 04 18 84 c0 0f 85 86 28 00 00 45 8b 24 24 41 ff cc 4d 01 fc 4c 89 e0 48 c1 e8 03 <0f> b6 04 18 84 c0 0f 85 87 28 00 00 41 c6 04 24 00 41 80 3c 1e 00
RSP: 0018:ffff8881f0b2f7e0 EFLAGS: 00010a07
RAX: 1ffff1105b67b1ff RBX: dffffc0000000000 RCX: ffff8881f31f8000
RDX: 0000000000000000 RSI: 00000000000007e0 RDI: 00000000000007e0
RBP: ffff8881f0b2fb30 R08: ffffffff81e06fad R09: fffff94000ef7b77
R10: 0000000000000000 R11: dffffc0000000001 R12: ffff8882db3d8fff
R13: 0000000000000010 R14: 1ffff1103b6bd81e R15: ffff8881db3d9000
FS:  00007f71168826c0(0000) GS:ffff8881f6e00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: ffffed105b67b1ff CR3: 00000001db5c1000 CR4: 00000000003406b0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
----------------
Code disassembly (best guess):
   0:	ae                   	scas   %es:(%rdi),%al
   1:	b3 ff                	mov    $0xff,%bl
   3:	4d 8b 3f             	mov    (%r15),%r15
   6:	4c 89 e0             	mov    %r12,%rax
   9:	48 c1 e8 03          	shr    $0x3,%rax
   d:	0f b6 04 18          	movzbl (%rax,%rbx,1),%eax
  11:	84 c0                	test   %al,%al
  13:	0f 85 86 28 00 00    	jne    0x289f
  19:	45 8b 24 24          	mov    (%r12),%r12d
  1d:	41 ff cc             	dec    %r12d
  20:	4d 01 fc             	add    %r15,%r12
  23:	4c 89 e0             	mov    %r12,%rax
  26:	48 c1 e8 03          	shr    $0x3,%rax
* 2a:	0f b6 04 18          	movzbl (%rax,%rbx,1),%eax <-- trapping instruction
  2e:	84 c0                	test   %al,%al
  30:	0f 85 87 28 00 00    	jne    0x28bd
  36:	41 c6 04 24 00       	movb   $0x0,(%r12)
  3b:	41 80 3c 1e 00       	cmpb   $0x0,(%r14,%rbx,1)