loop0: detected capacity change from 0 to 4096 ntfs3: loop0: Different NTFS sector size (4096) and media sector size (512). 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: 5061 Comm: syz-executor989 Not tainted 6.6.0-syzkaller-16201-gb57b17e88bf5 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/09/2023 RIP: 0010:attr_data_read_resident+0xad/0xa70 fs/ntfs3/attrib.c:1232 Code: 00 00 e8 66 d8 ba fe bb ea ff ff ff e9 0a 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 05 fa 16 ff 4c 8b 33 49 c1 e6 0c 4c RSP: 0018:ffffc90003ac7750 EFLAGS: 00010202 RAX: 0000000000000004 RBX: 0000000000000020 RCX: dffffc0000000000 RDX: ffff888015fad940 RSI: 0000000000000000 RDI: 0000000000000000 RBP: ffff88801ec6e108 R08: ffffffff82d3e9d2 R09: ffffffff82dccd09 R10: 0000000000000002 R11: ffff888015fad940 R12: dffffc0000000000 R13: ffff888078ea07f8 R14: 00000000000000a0 R15: ffff888078ea0760 FS: 0000555557434380(0000) GS:ffff8880b9800000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000055c0e5b61000 CR3: 000000001cb3d000 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:576 generic_block_bmap+0x136/0x1e0 fs/buffer.c:2763 bmap+0xa5/0xe0 fs/inode.c:1826 ioctl_fibmap fs/ioctl.c:77 [inline] file_ioctl fs/ioctl.c:328 [inline] do_vfs_ioctl+0x203c/0x2b40 fs/ioctl.c:850 __do_sys_ioctl fs/ioctl.c:869 [inline] __se_sys_ioctl+0x81/0x170 fs/ioctl.c:857 do_syscall_x64 arch/x86/entry/common.c:51 [inline] do_syscall_64+0x44/0x110 arch/x86/entry/common.c:82 entry_SYSCALL_64_after_hwframe+0x63/0x6b RIP: 0033:0x7ffa3b34bab9 Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 61 17 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:00007ffd74dbd5d8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 RAX: ffffffffffffffda RBX: 0031656c69662f2e RCX: 00007ffa3b34bab9 RDX: 0000000020000100 RSI: 0000000000000001 RDI: 0000000000000004 RBP: 00007ffa3b3dd610 R08: 0000000000000000 R09: 00007ffd74dbd7a8 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000001 R13: 00007ffd74dbd798 R14: 0000000000000001 R15: 0000000000000001 Modules linked in: ---[ end trace 0000000000000000 ]--- RIP: 0010:attr_data_read_resident+0xad/0xa70 fs/ntfs3/attrib.c:1232 Code: 00 00 e8 66 d8 ba fe bb ea ff ff ff e9 0a 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 05 fa 16 ff 4c 8b 33 49 c1 e6 0c 4c RSP: 0018:ffffc90003ac7750 EFLAGS: 00010202 RAX: 0000000000000004 RBX: 0000000000000020 RCX: dffffc0000000000 RDX: ffff888015fad940 RSI: 0000000000000000 RDI: 0000000000000000 RBP: ffff88801ec6e108 R08: ffffffff82d3e9d2 R09: ffffffff82dccd09 R10: 0000000000000002 R11: ffff888015fad940 R12: dffffc0000000000 R13: ffff888078ea07f8 R14: 00000000000000a0 R15: ffff888078ea0760 FS: 0000555557434380(0000) GS:ffff8880b9800000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000055c0e5b61000 CR3: 000000001cb3d000 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 66 d8 ba fe call 0xfebad86d 7: bb ea ff ff ff mov $0xffffffea,%ebx c: e9 0a 05 00 00 jmp 0x51b 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 05 fa 16 ff call 0xff16fa3d 38: 4c 8b 33 mov (%rbx),%r14 3b: 49 c1 e6 0c shl $0xc,%r14 3f: 4c rex.WR