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: 19878 Comm: syz-executor.0 Not tainted 6.5.0-rc5-syzkaller-00056-gcacc6e22932f #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/26/2023 RIP: 0010:attr_data_read_resident+0xa0/0x6d0 fs/ntfs3/attrib.c:1232 Code: 89 e6 e8 83 95 cd fe 45 84 e4 0f 85 ca 04 00 00 e8 45 9a cd fe 48 8d 7b 20 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03 <80> 3c 02 00 0f 85 c0 05 00 00 48 8d 7d 10 4c 8b 63 20 48 b8 00 00 RSP: 0018:ffffc900050afa28 EFLAGS: 00010202 RAX: dffffc0000000000 RBX: 0000000000000000 RCX: ffffc900037c1000 RDX: 0000000000000004 RSI: ffffffff82b7867b RDI: 0000000000000020 RBP: ffff88808c3dc108 R08: 0000000000000001 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000 R13: 000000000000000c R14: ffff88802e744000 R15: 0000000000000080 FS: 00007f1b35e186c0(0000) GS:ffff8880b9800000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000001b2e52a000 CR3: 0000000089fd9000 CR4: 00000000003506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: ntfs_get_block_vbo+0x6b7/0xed0 fs/ntfs3/inode.c:572 generic_block_bmap+0x123/0x1a0 fs/buffer.c:2782 bmap+0xae/0x120 fs/inode.c:1842 ioctl_fibmap fs/ioctl.c:77 [inline] file_ioctl fs/ioctl.c:327 [inline] do_vfs_ioctl+0xaf3/0x1910 fs/ioctl.c:849 __do_sys_ioctl fs/ioctl.c:868 [inline] __se_sys_ioctl fs/ioctl.c:856 [inline] __x64_sys_ioctl+0x112/0x210 fs/ioctl.c:856 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x38/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x63/0xcd RIP: 0033:0x7f1b3507cae9 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:00007f1b35e180c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 RAX: ffffffffffffffda RBX: 00007f1b3519bf80 RCX: 00007f1b3507cae9 RDX: 0000000020000300 RSI: 0000000000000001 RDI: 0000000000000004 RBP: 00007f1b350c847a R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 000000000000000b R14: 00007f1b3519bf80 R15: 00007ffe4470f068 Modules linked in: ---[ end trace 0000000000000000 ]--- RIP: 0010:attr_data_read_resident+0xa0/0x6d0 fs/ntfs3/attrib.c:1232 Code: 89 e6 e8 83 95 cd fe 45 84 e4 0f 85 ca 04 00 00 e8 45 9a cd fe 48 8d 7b 20 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03 <80> 3c 02 00 0f 85 c0 05 00 00 48 8d 7d 10 4c 8b 63 20 48 b8 00 00 RSP: 0018:ffffc900050afa28 EFLAGS: 00010202 RAX: dffffc0000000000 RBX: 0000000000000000 RCX: ffffc900037c1000 RDX: 0000000000000004 RSI: ffffffff82b7867b RDI: 0000000000000020 RBP: ffff88808c3dc108 R08: 0000000000000001 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000 R13: 000000000000000c R14: ffff88802e744000 R15: 0000000000000080 FS: 00007f1b35e186c0(0000) GS:ffff8880b9800000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007fb329378038 CR3: 0000000089fd9000 CR4: 00000000003506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 ---------------- Code disassembly (best guess): 0: 89 e6 mov %esp,%esi 2: e8 83 95 cd fe call 0xfecd958a 7: 45 84 e4 test %r12b,%r12b a: 0f 85 ca 04 00 00 jne 0x4da 10: e8 45 9a cd fe call 0xfecd9a5a 15: 48 8d 7b 20 lea 0x20(%rbx),%rdi 19: 48 b8 00 00 00 00 00 movabs $0xdffffc0000000000,%rax 20: fc ff df 23: 48 89 fa mov %rdi,%rdx 26: 48 c1 ea 03 shr $0x3,%rdx * 2a: 80 3c 02 00 cmpb $0x0,(%rdx,%rax,1) <-- trapping instruction 2e: 0f 85 c0 05 00 00 jne 0x5f4 34: 48 8d 7d 10 lea 0x10(%rbp),%rdi 38: 4c 8b 63 20 mov 0x20(%rbx),%r12 3c: 48 rex.W 3d: b8 .byte 0xb8