BUG: unable to handle page fault for address: ffffed10480b8fff
#PF: supervisor read access in kernel mode
#PF: error_code(0x0000) - not-present page
PGD 23fff2067 
P4D 23fff2067 PUD 23fff0067 PMD 0 
Oops: 0000 [#1] PREEMPT SMP KASAN
CPU: 1 PID: 1891 Comm: syz.3.518 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/18/2026
RIP: 0010:fuse_dev_do_write+0x2367/0x4ca0 fs/fuse/dev.c:1949
Code: 48 c1 e8 03 48 ba 00 00 00 00 00 fc ff df 0f b6 04 10 84 c0 0f 85 0b 26 00 00 45 8b 3f 41 ff cf 4d 01 f7 4c 89 f8 48 c1 e8 03 <0f> b6 04 10 84 c0 0f 85 17 26 00 00 41 c6 07 00 41 bf a0 00 00 00
RSP: 0018:ffffc90003c5f900 EFLAGS: 00010a07
RAX: 1ffff110480b8fff RBX: 1ffff11027986cc4 RCX: dffffc0000000000
RDX: dffffc0000000000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: ffffc90003c5fc08 R08: ffffea0004de39b7 R09: 1ffffd40009bc736
R10: dffffc0000000000 R11: fffff940009bc737 R12: ffff88813cc36608
R13: 0000000000000010 R14: ffff8881405c8000 R15: ffff8882405c7fff
FS:  00007f527be536c0(0000) GS:ffff8881f6f00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: ffffed10480b8fff CR3: 000000013c4d8000 CR4: 00000000003506a0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 fuse_dev_write+0xce/0x130 fs/fuse/dev.c:1999
 call_write_iter include/linux/fs.h:2282 [inline]
 new_sync_write fs/read_write.c:491 [inline]
 vfs_write+0x603/0xce0 fs/read_write.c:584
 ksys_write+0x149/0x250 fs/read_write.c:637
 __do_sys_write fs/read_write.c:649 [inline]
 __se_sys_write fs/read_write.c:646 [inline]
 __x64_sys_write+0x7b/0x90 fs/read_write.c:646
 x64_sys_call+0x27b/0x9a0 arch/x86/include/generated/asm/syscalls_64.h:2
 do_syscall_x64 arch/x86/entry/common.c:46 [inline]
 do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:76
 entry_SYSCALL_64_after_hwframe+0x68/0xd2
RIP: 0033:0x7f527af9ce59
Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 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 e8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f527be53028 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 00007f527b216180 RCX: 00007f527af9ce59
RDX: 0000000000000010 RSI: 00002000000004c0 RDI: 0000000000000005
RBP: 00007f527b032d6f R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f527b216218 R14: 00007f527b216180 R15: 00007ffe7b4516a8
 </TASK>
Modules linked in:
CR2: ffffed10480b8fff
---[ end trace 0000000000000000 ]---
RIP: 0010:fuse_dev_do_write+0x2367/0x4ca0 fs/fuse/dev.c:1949
Code: 48 c1 e8 03 48 ba 00 00 00 00 00 fc ff df 0f b6 04 10 84 c0 0f 85 0b 26 00 00 45 8b 3f 41 ff cf 4d 01 f7 4c 89 f8 48 c1 e8 03 <0f> b6 04 10 84 c0 0f 85 17 26 00 00 41 c6 07 00 41 bf a0 00 00 00
RSP: 0018:ffffc90003c5f900 EFLAGS: 00010a07
RAX: 1ffff110480b8fff RBX: 1ffff11027986cc4 RCX: dffffc0000000000
RDX: dffffc0000000000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: ffffc90003c5fc08 R08: ffffea0004de39b7 R09: 1ffffd40009bc736
R10: dffffc0000000000 R11: fffff940009bc737 R12: ffff88813cc36608
R13: 0000000000000010 R14: ffff8881405c8000 R15: ffff8882405c7fff
FS:  00007f527be536c0(0000) GS:ffff8881f6f00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: ffffed10480b8fff CR3: 000000013c4d8000 CR4: 00000000003506a0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
----------------
Code disassembly (best guess):
   0:	48 c1 e8 03          	shr    $0x3,%rax
   4:	48 ba 00 00 00 00 00 	movabs $0xdffffc0000000000,%rdx
   b:	fc ff df
   e:	0f b6 04 10          	movzbl (%rax,%rdx,1),%eax
  12:	84 c0                	test   %al,%al
  14:	0f 85 0b 26 00 00    	jne    0x2625
  1a:	45 8b 3f             	mov    (%r15),%r15d
  1d:	41 ff cf             	dec    %r15d
  20:	4d 01 f7             	add    %r14,%r15
  23:	4c 89 f8             	mov    %r15,%rax
  26:	48 c1 e8 03          	shr    $0x3,%rax
* 2a:	0f b6 04 10          	movzbl (%rax,%rdx,1),%eax <-- trapping instruction
  2e:	84 c0                	test   %al,%al
  30:	0f 85 17 26 00 00    	jne    0x264d
  36:	41 c6 07 00          	movb   $0x0,(%r15)
  3a:	41 bf a0 00 00 00    	mov    $0xa0,%r15d