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: 14310 Comm: syz-executor.3 Not tainted 6.1.0-rc2-syzkaller-00105-gb229b6ca5abb #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/11/2022 RIP: 0010:crc_itu_t+0x55/0xe0 lib/crc-itu-t.c:60 Code: 24 ff 49 bc 00 00 00 00 00 fc ff df eb 03 4d 89 ee e8 4f 2b 74 fd 48 89 ef 48 83 c5 01 48 89 f8 48 89 fa 48 c1 e8 03 83 e2 07 <42> 0f b6 04 20 38 d0 7f 04 84 c0 75 67 44 0f b7 eb 0f b6 df 32 5d RSP: 0018:ffffc90014917920 EFLAGS: 00010206 RAX: 0000000000000004 RBX: 0000000000005203 RCX: 0000000000000000 RDX: 0000000000000006 RSI: ffffffff84087131 RDI: 0000000000000026 RBP: 0000000000000027 R08: 0000000000000007 R09: 0000000000000000 R10: 0000000000000006 R11: 000000000008c07e R12: dffffc0000000000 R13: 0000000000000001 R14: 0000000000000005 R15: 0000000000000000 FS: 00007f6a63fdd700(0000) GS:ffff8880b9a00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f6a63f7a718 CR3: 00000000725b5000 CR4: 0000000000350ef0 Call Trace: udf_write_fi+0x9bb/0xf60 fs/udf/namei.c:103 udf_rename+0xd9f/0x1250 fs/udf/namei.c:1173 vfs_rename+0x115e/0x1a90 fs/namei.c:4778 do_renameat2+0xb5e/0xc80 fs/namei.c:4929 __do_sys_rename fs/namei.c:4975 [inline] __se_sys_rename fs/namei.c:4973 [inline] __x64_sys_rename+0x7d/0xa0 fs/namei.c:4973 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x63/0xcd RIP: 0033:0x7f6a6328b5a9 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:00007f6a63fdd168 EFLAGS: 00000246 ORIG_RAX: 0000000000000052 RAX: ffffffffffffffda RBX: 00007f6a633ac050 RCX: 00007f6a6328b5a9 RDX: 0000000000000000 RSI: 0000000020000140 RDI: 00000000200000c0 RBP: 00007f6a632e67b0 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007fffe7913faf R14: 00007f6a63fdd300 R15: 0000000000022000 Modules linked in: ---[ end trace 0000000000000000 ]--- RIP: 0010:crc_itu_t+0x55/0xe0 lib/crc-itu-t.c:60 Code: 24 ff 49 bc 00 00 00 00 00 fc ff df eb 03 4d 89 ee e8 4f 2b 74 fd 48 89 ef 48 83 c5 01 48 89 f8 48 89 fa 48 c1 e8 03 83 e2 07 <42> 0f b6 04 20 38 d0 7f 04 84 c0 75 67 44 0f b7 eb 0f b6 df 32 5d RSP: 0018:ffffc90014917920 EFLAGS: 00010206 RAX: 0000000000000004 RBX: 0000000000005203 RCX: 0000000000000000 RDX: 0000000000000006 RSI: ffffffff84087131 RDI: 0000000000000026 RBP: 0000000000000027 R08: 0000000000000007 R09: 0000000000000000 R10: 0000000000000006 R11: 000000000008c07e R12: dffffc0000000000 R13: 0000000000000001 R14: 0000000000000005 R15: 0000000000000000 FS: 00007f6a63fdd700(0000) GS:ffff8880b9b00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000020012000 CR3: 00000000725b5000 CR4: 0000000000350ee0 ---------------- Code disassembly (best guess): 0: 24 ff and $0xff,%al 2: 49 bc 00 00 00 00 00 movabs $0xdffffc0000000000,%r12 9: fc ff df c: eb 03 jmp 0x11 e: 4d 89 ee mov %r13,%r14 11: e8 4f 2b 74 fd callq 0xfd742b65 16: 48 89 ef mov %rbp,%rdi 19: 48 83 c5 01 add $0x1,%rbp 1d: 48 89 f8 mov %rdi,%rax 20: 48 89 fa mov %rdi,%rdx 23: 48 c1 e8 03 shr $0x3,%rax 27: 83 e2 07 and $0x7,%edx * 2a: 42 0f b6 04 20 movzbl (%rax,%r12,1),%eax <-- trapping instruction 2f: 38 d0 cmp %dl,%al 31: 7f 04 jg 0x37 33: 84 c0 test %al,%al 35: 75 67 jne 0x9e 37: 44 0f b7 eb movzwl %bx,%r13d 3b: 0f b6 df movzbl %bh,%ebx 3e: 32 .byte 0x32 3f: 5d pop %rbp