BUG: unable to handle page fault for address: ffffed1018bb0563
#PF: supervisor read access in kernel mode
#PF: error_code(0x0000) - not-present page
PGD 23ffee067 P4D 23ffee067 PUD 13fff5067 PMD 0 
Oops: 0000 [#1] PREEMPT SMP KASAN
CPU: 1 PID: 5877 Comm: syz-executor Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025
RIP: 0010:le32_add_cpu include/linux/byteorder/generic.h:151 [inline]
RIP: 0010:udf_add_fid_counter fs/udf/namei.c:-1 [inline]
RIP: 0010:udf_unlink+0x39e/0x6d0 fs/udf/namei.c:565
Code: 43 80 3c 3e 00 74 08 4c 89 e7 e8 3d 72 e6 fe bf c0 00 00 00 49 03 3c 24 31 f6 e8 dd f8 79 07 48 83 c3 20 48 89 d8 48 c1 e8 03 <42> 0f b6 04 38 84 c0 0f 85 20 02 00 00 ff 0b 43 80 3c 3e 00 74 08
RSP: 0018:ffffc90003377be0 EFLAGS: 00010a06
RAX: 1ffff11018bb0563 RBX: ffff8880c5d82b18 RCX: 0000000000000000
RDX: 0000000000000000 RSI: ffffffff8afc7380 RDI: 00000000ffffffff
RBP: ffffc90003377d80 R08: ffffffff8e4a39ef R09: 1ffffffff1c9473d
R10: dffffc0000000000 R11: fffffbfff1c9473e R12: ffff88802cca2630
R13: ffff88805e841490 R14: 1ffff110059944c6 R15: dffffc0000000000
FS:  0000555584886500(0000) GS:ffff8880b8f00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: ffffed1018bb0563 CR3: 000000002d233000 CR4: 00000000003506e0
Call Trace:
 <TASK>
 vfs_unlink+0x389/0x600 fs/namei.c:4333
 do_unlinkat+0x328/0x570 fs/namei.c:4399
 __do_sys_unlink fs/namei.c:4447 [inline]
 __se_sys_unlink fs/namei.c:4445 [inline]
 __x64_sys_unlink+0x49/0x50 fs/namei.c:4445
 do_syscall_x64 arch/x86/entry/common.c:46 [inline]
 do_syscall_64+0x55/0xb0 arch/x86/entry/common.c:76
 entry_SYSCALL_64_after_hwframe+0x68/0xd2
RIP: 0033:0x7fe4b538ecf7
Code: 73 01 c3 48 c7 c1 a8 ff ff ff f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 b8 57 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 a8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007ffd0588a298 EFLAGS: 00000206 ORIG_RAX: 0000000000000057
RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007fe4b538ecf7
RDX: 00007ffd0588a2c0 RSI: 00007ffd0588a350 RDI: 00007ffd0588a350
RBP: 00007ffd0588a350 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000100 R11: 0000000000000206 R12: 00007ffd0588b440
R13: 00007fe4b5413d7d R14: 00000000000195b6 R15: 00007ffd0588d600
 </TASK>
Modules linked in:
CR2: ffffed1018bb0563
---[ end trace 0000000000000000 ]---
RIP: 0010:le32_add_cpu include/linux/byteorder/generic.h:151 [inline]
RIP: 0010:udf_add_fid_counter fs/udf/namei.c:-1 [inline]
RIP: 0010:udf_unlink+0x39e/0x6d0 fs/udf/namei.c:565
Code: 43 80 3c 3e 00 74 08 4c 89 e7 e8 3d 72 e6 fe bf c0 00 00 00 49 03 3c 24 31 f6 e8 dd f8 79 07 48 83 c3 20 48 89 d8 48 c1 e8 03 <42> 0f b6 04 38 84 c0 0f 85 20 02 00 00 ff 0b 43 80 3c 3e 00 74 08
RSP: 0018:ffffc90003377be0 EFLAGS: 00010a06
RAX: 1ffff11018bb0563 RBX: ffff8880c5d82b18 RCX: 0000000000000000
RDX: 0000000000000000 RSI: ffffffff8afc7380 RDI: 00000000ffffffff
RBP: ffffc90003377d80 R08: ffffffff8e4a39ef R09: 1ffffffff1c9473d
R10: dffffc0000000000 R11: fffffbfff1c9473e R12: ffff88802cca2630
R13: ffff88805e841490 R14: 1ffff110059944c6 R15: dffffc0000000000
FS:  0000555584886500(0000) GS:ffff8880b8f00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: ffffed1018bb0563 CR3: 000000002d233000 CR4: 00000000003506e0
----------------
Code disassembly (best guess):
   0:	43 80 3c 3e 00       	cmpb   $0x0,(%r14,%r15,1)
   5:	74 08                	je     0xf
   7:	4c 89 e7             	mov    %r12,%rdi
   a:	e8 3d 72 e6 fe       	call   0xfee6724c
   f:	bf c0 00 00 00       	mov    $0xc0,%edi
  14:	49 03 3c 24          	add    (%r12),%rdi
  18:	31 f6                	xor    %esi,%esi
  1a:	e8 dd f8 79 07       	call   0x779f8fc
  1f:	48 83 c3 20          	add    $0x20,%rbx
  23:	48 89 d8             	mov    %rbx,%rax
  26:	48 c1 e8 03          	shr    $0x3,%rax
* 2a:	42 0f b6 04 38       	movzbl (%rax,%r15,1),%eax <-- trapping instruction
  2f:	84 c0                	test   %al,%al
  31:	0f 85 20 02 00 00    	jne    0x257
  37:	ff 0b                	decl   (%rbx)
  39:	43 80 3c 3e 00       	cmpb   $0x0,(%r14,%r15,1)
  3e:	74 08                	je     0x48