general protection fault, probably for non-canonical address 0xdffffc0000000004: 0000 [#1] PREEMPT SMP KASAN PTI KASAN: null-ptr-deref in range [0x0000000000000020-0x0000000000000027] CPU: 0 PID: 13728 Comm: syz-executor.2 Not tainted 6.9.0-rc4-syzkaller-00274-g3b68086599f8 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/27/2024 RIP: 0010:attr_data_read_resident+0xad/0xa80 fs/ntfs3/attrib.c:1239 Code: 00 00 e8 e6 52 b4 fe bb ea ff ff ff e9 0b 05 00 00 48 8b 04 24 48 8d 58 20 48 89 d8 48 c1 e8 03 48 b9 00 00 00 00 00 fc ff df <80> 3c 08 00 74 08 48 89 df e8 15 64 15 ff 4c 8b 33 49 c1 e6 0c 4c RSP: 0018:ffffc90011cbf630 EFLAGS: 00010202 RAX: 0000000000000004 RBX: 0000000000000020 RCX: dffffc0000000000 RDX: ffff88801cf25a00 RSI: 0000000000000000 RDI: 0000000000000000 RBP: ffff8880297ac108 R08: ffffffff82e1ad72 R09: ffffffff82eab409 R10: 0000000000000002 R11: ffff88801cf25a00 R12: dffffc0000000000 R13: ffff88805d75f698 R14: 00000000000000a0 R15: ffff88805d75f600 FS: 00007fba58dc56c0(0000) GS:ffff8880b9400000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f4ba708ed58 CR3: 000000002da18000 CR4: 00000000003506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: ntfs_get_block_vbo+0x312/0xd00 fs/ntfs3/inode.c:574 generic_block_bmap+0x13a/0x1f0 fs/buffer.c:2744 bmap+0xa8/0xe0 fs/inode.c:1792 ioctl_fibmap fs/ioctl.c:77 [inline] file_ioctl fs/ioctl.c:328 [inline] do_vfs_ioctl+0x2293/0x2e50 fs/ioctl.c:883 __do_sys_ioctl fs/ioctl.c:902 [inline] __se_sys_ioctl+0x81/0x170 fs/ioctl.c:890 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0xf5/0x240 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7fba5807dea9 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:00007fba58dc50c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 RAX: ffffffffffffffda RBX: 00007fba581abf80 RCX: 00007fba5807dea9 RDX: 0000000020000040 RSI: 0000000000000001 RDI: 0000000000000004 RBP: 00007fba580ca4a4 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 000000000000000b R14: 00007fba581abf80 R15: 00007fffd5beff38 Modules linked in: ---[ end trace 0000000000000000 ]--- RIP: 0010:attr_data_read_resident+0xad/0xa80 fs/ntfs3/attrib.c:1239 Code: 00 00 e8 e6 52 b4 fe bb ea ff ff ff e9 0b 05 00 00 48 8b 04 24 48 8d 58 20 48 89 d8 48 c1 e8 03 48 b9 00 00 00 00 00 fc ff df <80> 3c 08 00 74 08 48 89 df e8 15 64 15 ff 4c 8b 33 49 c1 e6 0c 4c RSP: 0018:ffffc90011cbf630 EFLAGS: 00010202 RAX: 0000000000000004 RBX: 0000000000000020 RCX: dffffc0000000000 RDX: ffff88801cf25a00 RSI: 0000000000000000 RDI: 0000000000000000 RBP: ffff8880297ac108 R08: ffffffff82e1ad72 R09: ffffffff82eab409 R10: 0000000000000002 R11: ffff88801cf25a00 R12: dffffc0000000000 R13: ffff88805d75f698 R14: 00000000000000a0 R15: ffff88805d75f600 FS: 00007fba58dc56c0(0000) GS:ffff8880b9400000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f4ba708ed58 CR3: 000000002da18000 CR4: 00000000003506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 ---------------- Code disassembly (best guess): 0: 00 00 add %al,(%rax) 2: e8 e6 52 b4 fe call 0xfeb452ed 7: bb ea ff ff ff mov $0xffffffea,%ebx c: e9 0b 05 00 00 jmp 0x51c 11: 48 8b 04 24 mov (%rsp),%rax 15: 48 8d 58 20 lea 0x20(%rax),%rbx 19: 48 89 d8 mov %rbx,%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: 80 3c 08 00 cmpb $0x0,(%rax,%rcx,1) <-- trapping instruction 2e: 74 08 je 0x38 30: 48 89 df mov %rbx,%rdi 33: e8 15 64 15 ff call 0xff15644d 38: 4c 8b 33 mov (%rbx),%r14 3b: 49 c1 e6 0c shl $0xc,%r14 3f: 4c rex.WR