general protection fault, probably for non-canonical address 0xdffffc0000000001: 0000 [#1] PREEMPT SMP KASAN KASAN: null-ptr-deref in range [0x0000000000000008-0x000000000000000f] CPU: 1 PID: 30189 Comm: syz-executor.1 Not tainted 6.0.0-syzkaller-09039-ga6afa4199d3d #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/22/2022 RIP: 0010:d_flags_for_inode+0x21b/0x2a0 fs/dcache.c:1980 Code: 89 fa 48 c1 ea 03 80 3c 02 00 0f 85 90 00 00 00 48 b8 00 00 00 00 00 fc ff df 4c 8b 63 20 49 8d 7c 24 08 48 89 fa 48 c1 ea 03 <80> 3c 02 00 75 69 49 83 7c 24 08 00 75 34 e8 e2 df 9e ff 41 83 cd RSP: 0018:ffffc900049dfb40 EFLAGS: 00010212 RAX: dffffc0000000000 RBX: ffff888078399870 RCX: ffffc90004dd2000 RDX: 0000000000000001 RSI: ffffffff81dc3702 RDI: 0000000000000008 RBP: 0000000000000000 R08: 0000000000000003 R09: 0000000000000000 R10: 0000000000000000 R11: 000000000008c07c R12: 0000000000000000 R13: 0000000000000008 R14: ffff888091f60000 R15: ffff8880738ba088 FS: 00007f2b135fe700(0000) GS:ffff8880b9b00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007fc198a8f718 CR3: 0000000022689000 CR4: 0000000000350ee0 Call Trace: __d_instantiate+0x21/0x450 fs/dcache.c:1998 d_instantiate fs/dcache.c:2036 [inline] d_instantiate fs/dcache.c:2030 [inline] d_make_root+0xae/0x110 fs/dcache.c:2071 ntfs_fill_super+0x31eb/0x37f0 fs/ntfs3/super.c:1269 get_tree_bdev+0x440/0x760 fs/super.c:1323 vfs_get_tree+0x89/0x2f0 fs/super.c:1530 do_new_mount fs/namespace.c:3040 [inline] path_mount+0x1326/0x1e20 fs/namespace.c:3370 do_mount fs/namespace.c:3383 [inline] __do_sys_mount fs/namespace.c:3591 [inline] __se_sys_mount fs/namespace.c:3568 [inline] __x64_sys_mount+0x27f/0x300 fs/namespace.c:3568 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x63/0xcd RIP: 0033:0x7f2b1468bada Code: 48 c7 c2 b8 ff ff ff f7 d8 64 89 02 b8 ff ff ff ff eb d2 e8 b8 04 00 00 0f 1f 84 00 00 00 00 00 49 89 ca b8 a5 00 00 00 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:00007f2b135fdf88 EFLAGS: 00000202 ORIG_RAX: 00000000000000a5 RAX: ffffffffffffffda RBX: 0000000020000200 RCX: 00007f2b1468bada RDX: 0000000020000000 RSI: 0000000020000100 RDI: 00007f2b135fdfe0 RBP: 00007f2b135fe020 R08: 00007f2b135fe020 R09: 0000000020000000 R10: 0000000000000000 R11: 0000000000000202 R12: 0000000020000000 R13: 0000000020000100 R14: 00007f2b135fdfe0 R15: 0000000020003540 Modules linked in: ---[ end trace 0000000000000000 ]--- RIP: 0010:d_flags_for_inode+0x21b/0x2a0 fs/dcache.c:1980 Code: 89 fa 48 c1 ea 03 80 3c 02 00 0f 85 90 00 00 00 48 b8 00 00 00 00 00 fc ff df 4c 8b 63 20 49 8d 7c 24 08 48 89 fa 48 c1 ea 03 <80> 3c 02 00 75 69 49 83 7c 24 08 00 75 34 e8 e2 df 9e ff 41 83 cd RSP: 0018:ffffc900049dfb40 EFLAGS: 00010212 RAX: dffffc0000000000 RBX: ffff888078399870 RCX: ffffc90004dd2000 RDX: 0000000000000001 RSI: ffffffff81dc3702 RDI: 0000000000000008 RBP: 0000000000000000 R08: 0000000000000003 R09: 0000000000000000 R10: 0000000000000000 R11: 000000000008c07c R12: 0000000000000000 R13: 0000000000000008 R14: ffff888091f60000 R15: ffff8880738ba088 FS: 00007f2b135fe700(0000) GS:ffff8880b9b00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007fc198a8f718 CR3: 0000000022689000 CR4: 0000000000350ee0 ---------------- Code disassembly (best guess): 0: 89 fa mov %edi,%edx 2: 48 c1 ea 03 shr $0x3,%rdx 6: 80 3c 02 00 cmpb $0x0,(%rdx,%rax,1) a: 0f 85 90 00 00 00 jne 0xa0 10: 48 b8 00 00 00 00 00 movabs $0xdffffc0000000000,%rax 17: fc ff df 1a: 4c 8b 63 20 mov 0x20(%rbx),%r12 1e: 49 8d 7c 24 08 lea 0x8(%r12),%rdi 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: 75 69 jne 0x99 30: 49 83 7c 24 08 00 cmpq $0x0,0x8(%r12) 36: 75 34 jne 0x6c 38: e8 e2 df 9e ff callq 0xff9ee01f 3d: 41 rex.B 3e: 83 .byte 0x83 3f: cd .byte 0xcd