loop4: detected capacity change from 0 to 30 ntfs3: Unknown parameter 'obj_type' general protection fault, probably for non-canonical address 0xdffffc0000000003: 0000 [#1] PREEMPT SMP KASAN KASAN: null-ptr-deref in range [0x0000000000000018-0x000000000000001f] CPU: 1 PID: 7394 Comm: syz-executor.4 Not tainted 6.0.0-rc1-syzkaller-00025-g274a2eebf80c #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/22/2022 RIP: 0010:ntfs_update_mftmirr+0x51/0x640 fs/ntfs3/fsntfs.c:834 Code: 48 c1 e8 03 80 3c 18 00 74 08 4c 89 f7 e8 c7 47 16 ff 49 8b 06 48 89 44 24 28 48 8d 68 18 48 89 e8 48 c1 e8 03 48 89 44 24 38 <80> 3c 18 00 74 08 48 89 ef e8 a1 47 16 ff 48 89 6c 24 30 48 8b 45 RSP: 0018:ffffc9001545fc78 EFLAGS: 00010206 RAX: 0000000000000003 RBX: dffffc0000000000 RCX: 0000000000040000 RDX: ffffc9000c994000 RSI: 0000000000002a2c RDI: 0000000000002a2d RBP: 0000000000000018 R08: dffffc0000000000 R09: ffff8880829d6290 R10: ffffed101053ac55 R11: 1ffff1101053ac52 R12: ffff88807a948c00 R13: dffffc0000000000 R14: ffff8880829d6000 R15: dffffc0000000000 FS: 00007f5d13a72700(0000) GS:ffff8880b9b00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007fb0cb01d718 CR3: 0000000018d82000 CR4: 00000000003506e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: put_ntfs+0x1ed/0x2a0 fs/ntfs3/super.c:463 ntfs_fs_free+0x6a/0xe0 fs/ntfs3/super.c:1365 put_fs_context+0x119/0x7a0 fs/fs_context.c:469 do_new_mount+0x2b4/0xad0 fs/namespace.c:3044 do_mount fs/namespace.c:3383 [inline] __do_sys_mount fs/namespace.c:3591 [inline] __se_sys_mount+0x2e3/0x3d0 fs/namespace.c:3568 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x2b/0x70 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x63/0xcd RIP: 0033:0x7f5d1288a7aa 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:00007f5d13a71f88 EFLAGS: 00000202 ORIG_RAX: 00000000000000a5 RAX: ffffffffffffffda RBX: 0000000020000600 RCX: 00007f5d1288a7aa RDX: 00000000200000c0 RSI: 0000000020000140 RDI: 00007f5d13a71fe0 RBP: 00007f5d13a72020 R08: 00007f5d13a72020 R09: 00000000200000c0 R10: 0000000000000088 R11: 0000000000000202 R12: 00000000200000c0 R13: 0000000020000140 R14: 00007f5d13a71fe0 R15: 0000000020000680 Modules linked in: ---[ end trace 0000000000000000 ]--- RIP: 0010:ntfs_update_mftmirr+0x51/0x640 fs/ntfs3/fsntfs.c:834 Code: 48 c1 e8 03 80 3c 18 00 74 08 4c 89 f7 e8 c7 47 16 ff 49 8b 06 48 89 44 24 28 48 8d 68 18 48 89 e8 48 c1 e8 03 48 89 44 24 38 <80> 3c 18 00 74 08 48 89 ef e8 a1 47 16 ff 48 89 6c 24 30 48 8b 45 RSP: 0018:ffffc9001545fc78 EFLAGS: 00010206 RAX: 0000000000000003 RBX: dffffc0000000000 RCX: 0000000000040000 RDX: ffffc9000c994000 RSI: 0000000000002a2c RDI: 0000000000002a2d RBP: 0000000000000018 R08: dffffc0000000000 R09: ffff8880829d6290 R10: ffffed101053ac55 R11: 1ffff1101053ac52 R12: ffff88807a948c00 R13: dffffc0000000000 R14: ffff8880829d6000 R15: dffffc0000000000 FS: 00007f5d13a72700(0000) GS:ffff8880b9a00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000000002062f000 CR3: 0000000018d82000 CR4: 00000000003506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 ---------------- Code disassembly (best guess): 0: 48 c1 e8 03 shr $0x3,%rax 4: 80 3c 18 00 cmpb $0x0,(%rax,%rbx,1) 8: 74 08 je 0x12 a: 4c 89 f7 mov %r14,%rdi d: e8 c7 47 16 ff callq 0xff1647d9 12: 49 8b 06 mov (%r14),%rax 15: 48 89 44 24 28 mov %rax,0x28(%rsp) 1a: 48 8d 68 18 lea 0x18(%rax),%rbp 1e: 48 89 e8 mov %rbp,%rax 21: 48 c1 e8 03 shr $0x3,%rax 25: 48 89 44 24 38 mov %rax,0x38(%rsp) * 2a: 80 3c 18 00 cmpb $0x0,(%rax,%rbx,1) <-- trapping instruction 2e: 74 08 je 0x38 30: 48 89 ef mov %rbp,%rdi 33: e8 a1 47 16 ff callq 0xff1647d9 38: 48 89 6c 24 30 mov %rbp,0x30(%rsp) 3d: 48 rex.W 3e: 8b .byte 0x8b 3f: 45 rex.RB