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: 26572 Comm: syz-executor.5 Not tainted 6.2.0-rc3-next-20230112-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/26/2022 RIP: 0010:ntfs_lookup+0x16b/0x260 fs/ntfs3/namei.c:96 Code: ff ff e8 38 ae cd fe 48 81 fd 00 f0 ff ff 77 2b e8 5a b1 cd fe 48 8d 7d 20 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03 <80> 3c 02 00 0f 85 d3 00 00 00 48 83 7d 20 00 74 54 e8 2f b1 cd fe RSP: 0018:ffffc900035f7d20 EFLAGS: 00010202 RAX: dffffc0000000000 RBX: 1ffffffff1ce7efe RCX: ffffc9000c379000 RDX: 0000000000000004 RSI: ffffffff82b40b86 RDI: 0000000000000020 RBP: 0000000000000000 R08: 0000000000000007 R09: fffffffffffff000 R10: 0000000000000000 R11: 0000000000000000 R12: ffff88803c727be8 R13: ffff888028de6600 R14: ffff8880811ae990 R15: ffff8880811ae7d8 FS: 00007f3e49764700(0000) GS:ffff8880b9800000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000000000000 CR3: 0000000035bd4000 CR4: 00000000003526f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: __lookup_hash+0x117/0x180 fs/namei.c:1602 filename_create+0x1d6/0x4a0 fs/namei.c:3809 do_symlinkat+0xc8/0x2c0 fs/namei.c:4421 __do_sys_symlink fs/namei.c:4453 [inline] __se_sys_symlink fs/namei.c:4451 [inline] __x64_sys_symlink+0x79/0x90 fs/namei.c:4451 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x39/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x63/0xcd RIP: 0033:0x7f3e48a8c0c9 Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 f1 19 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 b8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007f3e49764168 EFLAGS: 00000246 ORIG_RAX: 0000000000000058 RAX: ffffffffffffffda RBX: 00007f3e48babf80 RCX: 00007f3e48a8c0c9 RDX: 0000000000000000 RSI: 0000000020000280 RDI: 0000000020000480 RBP: 00007f3e48ae7ae9 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007fffcab8f06f R14: 00007f3e49764300 R15: 0000000000022000 Modules linked in: ---[ end trace 0000000000000000 ]--- RIP: 0010:ntfs_lookup+0x16b/0x260 fs/ntfs3/namei.c:96 Code: ff ff e8 38 ae cd fe 48 81 fd 00 f0 ff ff 77 2b e8 5a b1 cd fe 48 8d 7d 20 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03 <80> 3c 02 00 0f 85 d3 00 00 00 48 83 7d 20 00 74 54 e8 2f b1 cd fe RSP: 0018:ffffc900035f7d20 EFLAGS: 00010202 RAX: dffffc0000000000 RBX: 1ffffffff1ce7efe RCX: ffffc9000c379000 RDX: 0000000000000004 RSI: ffffffff82b40b86 RDI: 0000000000000020 RBP: 0000000000000000 R08: 0000000000000007 R09: fffffffffffff000 R10: 0000000000000000 R11: 0000000000000000 R12: ffff88803c727be8 R13: ffff888028de6600 R14: ffff8880811ae990 R15: ffff8880811ae7d8 FS: 00007f3e49764700(0000) GS:ffff8880b9900000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f4a8cf821b8 CR3: 0000000035bd4000 CR4: 00000000003526e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 ---------------- Code disassembly (best guess), 2 bytes skipped: 0: e8 38 ae cd fe callq 0xfecdae3d 5: 48 81 fd 00 f0 ff ff cmp $0xfffffffffffff000,%rbp c: 77 2b ja 0x39 e: e8 5a b1 cd fe callq 0xfecdb16d 13: 48 8d 7d 20 lea 0x20(%rbp),%rdi 17: 48 b8 00 00 00 00 00 movabs $0xdffffc0000000000,%rax 1e: fc ff df 21: 48 89 fa mov %rdi,%rdx 24: 48 c1 ea 03 shr $0x3,%rdx * 28: 80 3c 02 00 cmpb $0x0,(%rdx,%rax,1) <-- trapping instruction 2c: 0f 85 d3 00 00 00 jne 0x105 32: 48 83 7d 20 00 cmpq $0x0,0x20(%rbp) 37: 74 54 je 0x8d 39: e8 2f b1 cd fe callq 0xfecdb16d