loop0: detected capacity change from 0 to 4096 ntfs3(loop0): Different NTFS sector size (4096) and media sector size (512). ntfs3(loop0): ino=1b, "file0" attr_set_size ntfs3(loop0): Mark volume as dirty due to NTFS errors Oops: general protection fault, probably for non-canonical address 0xdffffc0000000000: 0000 [#1] PREEMPT SMP KASAN NOPTI KASAN: null-ptr-deref in range [0x0000000000000000-0x0000000000000007] CPU: 0 UID: 0 PID: 5315 Comm: syz.0.0 Not tainted 6.13.0-rc2-syzkaller #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:pick_link+0x51c/0xd50 fs/namei.c:1923 Code: c1 e8 03 42 80 3c 38 00 74 08 48 89 df e8 fc 54 ea ff 48 8b 2b 48 85 ed 0f 84 92 00 00 00 e8 7b f5 83 ff 48 89 e8 48 c1 e8 03 <42> 0f b6 04 38 84 c0 0f 85 a2 05 00 00 0f b6 5d 00 bf 2f 00 00 00 RSP: 0018:ffffc9000d46f978 EFLAGS: 00010246 RAX: 0000000000000000 RBX: ffff888043f2dec8 RCX: 0000000000100000 RDX: ffffc9000e8c9000 RSI: 00000000000000d4 RDI: 00000000000000d5 RBP: 0000000000000002 R08: ffffffff821b688f R09: 1ffffffff2032cae R10: dffffc0000000000 R11: fffffbfff2032caf R12: 1ffff92001a8df93 R13: ffffc9000d46fad8 R14: 1ffff92001a8df5b R15: dffffc0000000000 FS: 00007faaf9a5b6c0(0000) GS:ffff88801fc00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007faaed7ff000 CR3: 0000000043a0e000 CR4: 0000000000352ef0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: step_into+0xca9/0x1080 fs/namei.c:1982 lookup_last fs/namei.c:2610 [inline] path_lookupat+0x16f/0x450 fs/namei.c:2634 filename_lookup+0x2a3/0x670 fs/namei.c:2663 user_path_at+0x3a/0x60 fs/namei.c:3070 do_mount fs/namespace.c:3844 [inline] __do_sys_mount fs/namespace.c:4057 [inline] __se_sys_mount+0x297/0x3c0 fs/namespace.c:4034 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: 0033:0x7faaf8b7fed9 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:00007faaf9a5b058 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5 RAX: ffffffffffffffda RBX: 00007faaf8d45fa0 RCX: 00007faaf8b7fed9 RDX: 0000000000000000 RSI: 00000000200000c0 RDI: 0000000000000000 RBP: 00007faaf8bf3cc8 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 0000000000000000 R14: 00007faaf8d45fa0 R15: 00007ffc29eb6fc8 Modules linked in: ---[ end trace 0000000000000000 ]--- RIP: 0010:pick_link+0x51c/0xd50 fs/namei.c:1923 Code: c1 e8 03 42 80 3c 38 00 74 08 48 89 df e8 fc 54 ea ff 48 8b 2b 48 85 ed 0f 84 92 00 00 00 e8 7b f5 83 ff 48 89 e8 48 c1 e8 03 <42> 0f b6 04 38 84 c0 0f 85 a2 05 00 00 0f b6 5d 00 bf 2f 00 00 00 RSP: 0018:ffffc9000d46f978 EFLAGS: 00010246 RAX: 0000000000000000 RBX: ffff888043f2dec8 RCX: 0000000000100000 RDX: ffffc9000e8c9000 RSI: 00000000000000d4 RDI: 00000000000000d5 RBP: 0000000000000002 R08: ffffffff821b688f R09: 1ffffffff2032cae R10: dffffc0000000000 R11: fffffbfff2032caf R12: 1ffff92001a8df93 R13: ffffc9000d46fad8 R14: 1ffff92001a8df5b R15: dffffc0000000000 FS: 00007faaf9a5b6c0(0000) GS:ffff88801fc00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007faaed0c7000 CR3: 0000000043a0e000 CR4: 0000000000352ef0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 ---------------- Code disassembly (best guess): 0: c1 e8 03 shr $0x3,%eax 3: 42 80 3c 38 00 cmpb $0x0,(%rax,%r15,1) 8: 74 08 je 0x12 a: 48 89 df mov %rbx,%rdi d: e8 fc 54 ea ff call 0xffea550e 12: 48 8b 2b mov (%rbx),%rbp 15: 48 85 ed test %rbp,%rbp 18: 0f 84 92 00 00 00 je 0xb0 1e: e8 7b f5 83 ff call 0xff83f59e 23: 48 89 e8 mov %rbp,%rax 26: 48 c1 e8 03 shr $0x3,%rax * 2a: 42 0f b6 04 38 movzbl (%rax,%r15,1),%eax <-- trapping instruction 2f: 84 c0 test %al,%al 31: 0f 85 a2 05 00 00 jne 0x5d9 37: 0f b6 5d 00 movzbl 0x0(%rbp),%ebx 3b: bf 2f 00 00 00 mov $0x2f,%edi