loop0: detected capacity change from 0 to 4096 ntfs3: loop0: Different NTFS sector size (1024) and media sector size (512). Oops: general protection fault, probably for non-canonical address 0xdffffc0000000001: 0000 [#1] PREEMPT SMP KASAN NOPTI KASAN: null-ptr-deref in range [0x0000000000000008-0x000000000000000f] CPU: 0 UID: 0 PID: 5106 Comm: syz.0.0 Not tainted 6.12.0-rc1-syzkaller-00114-g3840cbe24cf0 #0 Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2~bpo12+1 04/01/2014 RIP: 0010:run_lookup fs/ntfs3/run.c:39 [inline] RIP: 0010:run_is_mapped_full+0x35/0x480 fs/ntfs3/run.c:173 Code: 41 54 53 48 83 ec 30 41 89 d4 41 89 f6 49 89 fd 49 bf 00 00 00 00 00 fc ff df e8 06 96 9f fe 49 8d 5d 08 48 89 d8 48 c1 e8 03 <42> 80 3c 38 00 74 08 48 89 df e8 2c 47 09 ff 48 8b 1b 31 ff 48 89 RSP: 0018:ffffc900030af758 EFLAGS: 00010202 RAX: 0000000000000001 RBX: 0000000000000008 RCX: 0000000000040000 RDX: ffffc9000b509000 RSI: 0000000000002f54 RDI: 0000000000002f55 RBP: ffffc900030afb18 R08: ffffffff82ebcfea R09: ffffffff82f52789 R10: 0000000000000002 R11: ffff88801aa74880 R12: 0000000000000000 R13: 0000000000000000 R14: 0000000000000000 R15: dffffc0000000000 FS: 00007f5a6cd2b6c0(0000) GS:ffff88801fc00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000020001000 CR3: 000000001fb56000 CR4: 0000000000352ef0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: attr_load_runs fs/ntfs3/attrib.c:69 [inline] attr_set_size+0xfdf/0x4300 fs/ntfs3/attrib.c:502 ntfs_create_inode+0x2604/0x3880 fs/ntfs3/inode.c:1675 ntfs_symlink+0xde/0x110 fs/ntfs3/namei.c:197 vfs_symlink+0x137/0x2e0 fs/namei.c:4615 do_symlinkat+0x222/0x3a0 fs/namei.c:4641 __do_sys_symlinkat fs/namei.c:4657 [inline] __se_sys_symlinkat fs/namei.c:4654 [inline] __x64_sys_symlinkat+0x95/0xb0 fs/namei.c:4654 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f5a6bf7dff9 Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 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 a8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007f5a6cd2b038 EFLAGS: 00000246 ORIG_RAX: 000000000000010a RAX: ffffffffffffffda RBX: 00007f5a6c135f80 RCX: 00007f5a6bf7dff9 RDX: 0000000020000ec0 RSI: 000000000000000d RDI: 0000000020000dc0 RBP: 00007f5a6bff0296 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 0000000000000000 R14: 00007f5a6c135f80 R15: 00007ffdbb084128 Modules linked in: ---[ end trace 0000000000000000 ]--- RIP: 0010:run_lookup fs/ntfs3/run.c:39 [inline] RIP: 0010:run_is_mapped_full+0x35/0x480 fs/ntfs3/run.c:173 Code: 41 54 53 48 83 ec 30 41 89 d4 41 89 f6 49 89 fd 49 bf 00 00 00 00 00 fc ff df e8 06 96 9f fe 49 8d 5d 08 48 89 d8 48 c1 e8 03 <42> 80 3c 38 00 74 08 48 89 df e8 2c 47 09 ff 48 8b 1b 31 ff 48 89 RSP: 0018:ffffc900030af758 EFLAGS: 00010202 RAX: 0000000000000001 RBX: 0000000000000008 RCX: 0000000000040000 RDX: ffffc9000b509000 RSI: 0000000000002f54 RDI: 0000000000002f55 RBP: ffffc900030afb18 R08: ffffffff82ebcfea R09: ffffffff82f52789 R10: 0000000000000002 R11: ffff88801aa74880 R12: 0000000000000000 R13: 0000000000000000 R14: 0000000000000000 R15: dffffc0000000000 FS: 00007f5a6cd2b6c0(0000) GS:ffff88801fc00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007fc8e0fe0eff CR3: 000000001fb56000 CR4: 0000000000352ef0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 ---------------- Code disassembly (best guess): 0: 41 54 push %r12 2: 53 push %rbx 3: 48 83 ec 30 sub $0x30,%rsp 7: 41 89 d4 mov %edx,%r12d a: 41 89 f6 mov %esi,%r14d d: 49 89 fd mov %rdi,%r13 10: 49 bf 00 00 00 00 00 movabs $0xdffffc0000000000,%r15 17: fc ff df 1a: e8 06 96 9f fe call 0xfe9f9625 1f: 49 8d 5d 08 lea 0x8(%r13),%rbx 23: 48 89 d8 mov %rbx,%rax 26: 48 c1 e8 03 shr $0x3,%rax * 2a: 42 80 3c 38 00 cmpb $0x0,(%rax,%r15,1) <-- trapping instruction 2f: 74 08 je 0x39 31: 48 89 df mov %rbx,%rdi 34: e8 2c 47 09 ff call 0xff094765 39: 48 8b 1b mov (%rbx),%rbx 3c: 31 ff xor %edi,%edi 3e: 48 rex.W 3f: 89 .byte 0x89