general protection fault, probably for non-canonical address 0xdffffc0000000000: 0000 [#1] PREEMPT SMP KASAN KASAN: null-ptr-deref in range [0x0000000000000000-0x0000000000000007] CPU: 1 PID: 368 Comm: syz-executor.2 Not tainted 6.3.0-rc5-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/02/2023 RIP: 0010:ntfs_security_init+0x566/0xc20 fs/ntfs3/fsntfs.c:1898 Code: c3 fe 83 fb 1f 77 0a e8 a8 2a c3 fe 45 31 e4 eb 08 e8 9e 2a c3 fe 4d 01 ec 4c 89 e0 48 c1 e8 03 48 b9 00 00 00 00 00 fc ff df <0f> b6 04 08 84 c0 0f 85 bd 05 00 00 41 8b 1c 24 31 ff 89 de e8 21 RSP: 0018:ffffc90005a37940 EFLAGS: 00010246 RAX: 0000000000000000 RBX: 0000000000000000 RCX: dffffc0000000000 RDX: ffffc9000c572000 RSI: 0000000000025adb RDI: 0000000000025adc RBP: ffffc90005a37a70 R08: ffffffff82c727ce R09: 0000000000000000 R10: 0000000000000003 R11: ffff88801f8857c0 R12: 0000000000000000 R13: ffff8880742d5230 R14: 00000000000000c8 R15: 1ffff92000b46f30 FS: 00007f0f5408d700(0000) GS:ffff8880b9900000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f12bea86000 CR3: 0000000029fc4000 CR4: 00000000003506e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: ntfs_fill_super+0x433f/0x47f0 fs/ntfs3/super.c:1287 get_tree_bdev+0x402/0x620 fs/super.c:1303 vfs_get_tree+0x8c/0x270 fs/super.c:1510 do_new_mount+0x28f/0xae0 fs/namespace.c:3042 do_mount fs/namespace.c:3385 [inline] __do_sys_mount fs/namespace.c:3594 [inline] __se_sys_mount+0x2d9/0x3c0 fs/namespace.c:3571 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x41/0xc0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x63/0xcd RIP: 0033:0x7f0f5328d62a Code: 48 c7 c2 b8 ff ff ff f7 d8 64 89 02 b8 ff ff ff ff eb d2 e8 b8 04 00 00 0f 1f 84 00 00 00 00 00 49 89 ca b8 a5 00 00 00 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:00007f0f5408cf88 EFLAGS: 00000202 ORIG_RAX: 00000000000000a5 RAX: ffffffffffffffda RBX: 000000000001f7a2 RCX: 00007f0f5328d62a RDX: 00000000200000c0 RSI: 00000000200002c0 RDI: 00007f0f5408cfe0 RBP: 00007f0f5408d020 R08: 00007f0f5408d020 R09: 0000000000004010 R10: 0000000000004010 R11: 0000000000000202 R12: 00000000200000c0 R13: 00000000200002c0 R14: 00007f0f5408cfe0 R15: 0000000020000700 Modules linked in: ---[ end trace 0000000000000000 ]--- RIP: 0010:ntfs_security_init+0x566/0xc20 fs/ntfs3/fsntfs.c:1898 Code: c3 fe 83 fb 1f 77 0a e8 a8 2a c3 fe 45 31 e4 eb 08 e8 9e 2a c3 fe 4d 01 ec 4c 89 e0 48 c1 e8 03 48 b9 00 00 00 00 00 fc ff df <0f> b6 04 08 84 c0 0f 85 bd 05 00 00 41 8b 1c 24 31 ff 89 de e8 21 RSP: 0018:ffffc90005a37940 EFLAGS: 00010246 RAX: 0000000000000000 RBX: 0000000000000000 RCX: dffffc0000000000 RDX: ffffc9000c572000 RSI: 0000000000025adb RDI: 0000000000025adc RBP: ffffc90005a37a70 R08: ffffffff82c727ce R09: 0000000000000000 R10: 0000000000000003 R11: ffff88801f8857c0 R12: 0000000000000000 R13: ffff8880742d5230 R14: 00000000000000c8 R15: 1ffff92000b46f30 FS: 00007f0f5408d700(0000) GS:ffff8880b9800000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007fd9583821b8 CR3: 0000000029fc4000 CR4: 00000000003506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 ---------------- Code disassembly (best guess): 0: c3 retq 1: fe 83 fb 1f 77 0a incb 0xa771ffb(%rbx) 7: e8 a8 2a c3 fe callq 0xfec32ab4 c: 45 31 e4 xor %r12d,%r12d f: eb 08 jmp 0x19 11: e8 9e 2a c3 fe callq 0xfec32ab4 16: 4d 01 ec add %r13,%r12 19: 4c 89 e0 mov %r12,%rax 1c: 48 c1 e8 03 shr $0x3,%rax 20: 48 b9 00 00 00 00 00 movabs $0xdffffc0000000000,%rcx 27: fc ff df * 2a: 0f b6 04 08 movzbl (%rax,%rcx,1),%eax <-- trapping instruction 2e: 84 c0 test %al,%al 30: 0f 85 bd 05 00 00 jne 0x5f3 36: 41 8b 1c 24 mov (%r12),%ebx 3a: 31 ff xor %edi,%edi 3c: 89 de mov %ebx,%esi 3e: e8 .byte 0xe8 3f: 21 .byte 0x21