general protection fault, probably for non-canonical address 0xdffffc0000000004: 0000 [#1] PREEMPT SMP KASAN KASAN: null-ptr-deref in range [0x0000000000000020-0x0000000000000027] CPU: 0 PID: 5365 Comm: syz-executor.2 Not tainted 6.1.90-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/27/2024 RIP: 0010:crc_itu_t+0xfb/0x2a0 lib/crc-itu-t.c:60 Code: e9 75 01 00 00 48 be 00 00 00 00 00 fc ff df b8 02 00 00 00 48 29 e8 48 89 44 24 08 48 8b 14 24 49 89 d7 4c 89 f8 48 c1 e8 03 <0f> b6 04 30 84 c0 0f 85 b1 00 00 00 42 0f b6 44 22 ff 41 0f b7 ce RSP: 0018:ffffc90003c7f790 EFLAGS: 00010203 RAX: 0000000000000004 RBX: 0000000000000096 RCX: ffff888025b63b80 RDX: 0000000000000026 RSI: dffffc0000000000 RDI: 0000000000000001 RBP: 0000000000000096 R08: ffffffff843d3c36 R09: ffff888055532c67 R10: 0000000000000000 R11: dffffc0000000001 R12: 0000000000000001 R13: ffffffffffffff44 R14: 0000000000004d58 R15: 0000000000000026 FS: 00007f8d778696c0(0000) GS:ffff8880b9800000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f471bc02380 CR3: 000000005db17000 CR4: 00000000003506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: udf_write_fi+0x62c/0xba0 fs/udf/namei.c:113 udf_delete_entry fs/udf/namei.c:577 [inline] udf_rename+0x8b3/0x14d0 fs/udf/namei.c:1173 vfs_rename+0xd32/0x10f0 fs/namei.c:4876 do_renameat2+0xde0/0x1440 fs/namei.c:5029 __do_sys_rename fs/namei.c:5075 [inline] __se_sys_rename fs/namei.c:5073 [inline] __x64_sys_rename+0x82/0x90 fs/namei.c:5073 do_syscall_x64 arch/x86/entry/common.c:51 [inline] do_syscall_64+0x3b/0xb0 arch/x86/entry/common.c:81 entry_SYSCALL_64_after_hwframe+0x68/0xd2 RIP: 0033:0x7f8d76a7dca9 Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 e1 20 00 00 90 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 b0 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007f8d778690c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000052 RAX: ffffffffffffffda RBX: 00007f8d76bac050 RCX: 00007f8d76a7dca9 RDX: 0000000000000000 RSI: 00000000200002c0 RDI: 0000000020000080 RBP: 00007f8d76ac947e R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 000000000000006e R14: 00007f8d76bac050 R15: 00007fffca505de8 Modules linked in: ---[ end trace 0000000000000000 ]--- RIP: 0010:crc_itu_t+0xfb/0x2a0 lib/crc-itu-t.c:60 Code: e9 75 01 00 00 48 be 00 00 00 00 00 fc ff df b8 02 00 00 00 48 29 e8 48 89 44 24 08 48 8b 14 24 49 89 d7 4c 89 f8 48 c1 e8 03 <0f> b6 04 30 84 c0 0f 85 b1 00 00 00 42 0f b6 44 22 ff 41 0f b7 ce RSP: 0018:ffffc90003c7f790 EFLAGS: 00010203 RAX: 0000000000000004 RBX: 0000000000000096 RCX: ffff888025b63b80 RDX: 0000000000000026 RSI: dffffc0000000000 RDI: 0000000000000001 RBP: 0000000000000096 R08: ffffffff843d3c36 R09: ffff888055532c67 R10: 0000000000000000 R11: dffffc0000000001 R12: 0000000000000001 R13: ffffffffffffff44 R14: 0000000000004d58 R15: 0000000000000026 FS: 00007f8d778696c0(0000) GS:ffff8880b9900000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000055d346ee0950 CR3: 000000005db17000 CR4: 00000000003506e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 ---------------- Code disassembly (best guess): 0: e9 75 01 00 00 jmp 0x17a 5: 48 be 00 00 00 00 00 movabs $0xdffffc0000000000,%rsi c: fc ff df f: b8 02 00 00 00 mov $0x2,%eax 14: 48 29 e8 sub %rbp,%rax 17: 48 89 44 24 08 mov %rax,0x8(%rsp) 1c: 48 8b 14 24 mov (%rsp),%rdx 20: 49 89 d7 mov %rdx,%r15 23: 4c 89 f8 mov %r15,%rax 26: 48 c1 e8 03 shr $0x3,%rax * 2a: 0f b6 04 30 movzbl (%rax,%rsi,1),%eax <-- trapping instruction 2e: 84 c0 test %al,%al 30: 0f 85 b1 00 00 00 jne 0xe7 36: 42 0f b6 44 22 ff movzbl -0x1(%rdx,%r12,1),%eax 3c: 41 0f b7 ce movzwl %r14w,%ecx