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: 31237 Comm: syz-executor.3 Not tainted 6.7.0-syzkaller-12829-g125514880ddd #0 Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.2-debian-1.16.2-1 04/01/2014 RIP: 0010:attr_data_read_resident+0xa0/0x6e0 fs/ntfs3/attrib.c:1232 Code: 89 e6 e8 b3 1a c5 fe 45 84 e4 0f 85 c3 04 00 00 e8 75 1f c5 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 ba 05 00 00 48 8d 7d 10 4c 8b 63 20 48 b8 00 00 RSP: 0018:ffffc9002370fa10 EFLAGS: 00010202 RAX: dffffc0000000000 RBX: 0000000000000000 RCX: ffffc90009ca1000 RDX: 0000000000000004 RSI: ffffffff82c1eabb RDI: 0000000000000020 RBP: ffff88805abd6108 R08: 0000000000000001 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000 R13: ffff888055940000 R14: 000000000000000c R15: 0000000000000080 FS: 00007fac47b066c0(0000) GS:ffff88806b600000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000001b2cb28000 CR3: 00000000400d5000 CR4: 0000000000350ef0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: ntfs_get_block_vbo+0x6b0/0xec0 fs/ntfs3/inode.c:576 generic_block_bmap+0x123/0x1a0 fs/buffer.c:2742 bmap+0xae/0x120 fs/inode.c:1790 ioctl_fibmap fs/ioctl.c:77 [inline] file_ioctl fs/ioctl.c:328 [inline] do_vfs_ioctl+0xaf8/0x1920 fs/ioctl.c:850 __do_sys_ioctl fs/ioctl.c:869 [inline] __se_sys_ioctl fs/ioctl.c:857 [inline] __x64_sys_ioctl+0x112/0x210 fs/ioctl.c:857 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0xd3/0x250 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x63/0x6b RIP: 0033:0x7fac46e7cda9 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:00007fac47b060c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 RAX: ffffffffffffffda RBX: 00007fac46fabf80 RCX: 00007fac46e7cda9 RDX: 0000000020000040 RSI: 0000000000000001 RDI: 0000000000000004 RBP: 00007fac46ec947a R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 000000000000000b R14: 00007fac46fabf80 R15: 00007fff64a7a288 Modules linked in: ---[ end trace 0000000000000000 ]--- RIP: 0010:attr_data_read_resident+0xa0/0x6e0 fs/ntfs3/attrib.c:1232 Code: 89 e6 e8 b3 1a c5 fe 45 84 e4 0f 85 c3 04 00 00 e8 75 1f c5 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 ba 05 00 00 48 8d 7d 10 4c 8b 63 20 48 b8 00 00 RSP: 0018:ffffc9002370fa10 EFLAGS: 00010202 RAX: dffffc0000000000 RBX: 0000000000000000 RCX: ffffc90009ca1000 RDX: 0000000000000004 RSI: ffffffff82c1eabb RDI: 0000000000000020 RBP: ffff88805abd6108 R08: 0000000000000001 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000 R13: ffff888055940000 R14: 000000000000000c R15: 0000000000000080 FS: 00007fac47b066c0(0000) GS:ffff88806b700000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007effca520000 CR3: 00000000400d5000 CR4: 0000000000350ef0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 ---------------- Code disassembly (best guess): 0: 89 e6 mov %esp,%esi 2: e8 b3 1a c5 fe call 0xfec51aba 7: 45 84 e4 test %r12b,%r12b a: 0f 85 c3 04 00 00 jne 0x4d3 10: e8 75 1f c5 fe call 0xfec51f8a 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 ba 05 00 00 jne 0x5ee 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