loop3: detected capacity change from 0 to 4096 ntfs3: loop3: Different NTFS sector size (1024) and media sector size (512). BUG: unable to handle page fault for address: ffffff8da63d8000 #PF: supervisor read access in kernel mode #PF: error_code(0x0000) - not-present page PGD d97e067 P4D d97e067 PUD 0 Oops: Oops: 0000 [#1] PREEMPT SMP KASAN NOPTI CPU: 2 PID: 13474 Comm: syz-executor.3 Not tainted 6.10.0-rc2-syzkaller-00097-g2df0193e62cf #0 Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.2-debian-1.16.2-1 04/01/2014 RIP: 0010:map_id_range_down+0x8f/0x3a0 kernel/user_namespace.c:318 Code: 00 00 48 89 44 24 70 31 c0 e8 ad 1b 04 00 4c 89 f0 48 c1 e8 03 0f b6 04 28 84 c0 74 08 3c 03 0f 8e 8b 02 00 00 4c 8b 74 24 08 <45> 8b 3e 44 89 3c 24 bf 05 00 00 00 44 89 fe e8 7d 16 04 00 41 83 RSP: 0018:ffffc900032bf798 EFLAGS: 00010246 RAX: 0000000000000000 RBX: 0000000000000001 RCX: ffffc90006139000 RDX: 0000000000040000 RSI: ffffffff8189c943 RDI: ffffff8da63d8000 RBP: dffffc0000000000 R08: 0000000000000001 R09: ffffed100946ce5f R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000 R13: ffffff8da63d8000 R14: ffffff8da63d8000 R15: dffffc0000000000 FS: 00007f91508b96c0(0000) GS:ffff88806b200000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: ffffff8da63d8000 CR3: 0000000047b1c000 CR4: 0000000000350ef0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: map_id_down kernel/user_namespace.c:337 [inline] make_kuid+0x1f/0x30 kernel/user_namespace.c:414 i_uid_write include/linux/fs.h:1368 [inline] inode_init_always+0x2f6/0xf50 fs/inode.c:174 alloc_inode+0x7d/0x230 fs/inode.c:268 iget5_locked fs/inode.c:1235 [inline] iget5_locked+0x1c9/0x2c0 fs/inode.c:1228 ntfs_iget5+0xd1/0x3970 fs/ntfs3/inode.c:532 ntfs_fill_super+0x3738/0x4460 fs/ntfs3/super.c:1485 get_tree_bdev+0x36f/0x610 fs/super.c:1615 vfs_get_tree+0x8f/0x380 fs/super.c:1780 do_new_mount fs/namespace.c:3352 [inline] path_mount+0x14e6/0x1f20 fs/namespace.c:3679 do_mount fs/namespace.c:3692 [inline] __do_sys_mount fs/namespace.c:3898 [inline] __se_sys_mount fs/namespace.c:3875 [inline] __x64_sys_mount+0x297/0x320 fs/namespace.c:3875 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0xcd/0x250 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f914fa7e5ea Code: d8 64 89 02 48 c7 c0 ff ff ff ff eb a6 e8 de 09 00 00 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 49 89 ca b8 a5 00 00 00 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:00007f91508b8ef8 EFLAGS: 00000202 ORIG_RAX: 00000000000000a5 RAX: ffffffffffffffda RBX: 00007f91508b8f80 RCX: 00007f914fa7e5ea RDX: 0000000020000040 RSI: 0000000020000300 RDI: 00007f91508b8f40 RBP: 0000000020000040 R08: 00007f91508b8f80 R09: 0000000000800000 R10: 0000000000800000 R11: 0000000000000202 R12: 0000000020000300 R13: 00007f91508b8f40 R14: 000000000001f828 R15: 0000000020000640 Modules linked in: CR2: ffffff8da63d8000 ---[ end trace 0000000000000000 ]--- RIP: 0010:map_id_range_down+0x8f/0x3a0 kernel/user_namespace.c:318 Code: 00 00 48 89 44 24 70 31 c0 e8 ad 1b 04 00 4c 89 f0 48 c1 e8 03 0f b6 04 28 84 c0 74 08 3c 03 0f 8e 8b 02 00 00 4c 8b 74 24 08 <45> 8b 3e 44 89 3c 24 bf 05 00 00 00 44 89 fe e8 7d 16 04 00 41 83 RSP: 0018:ffffc900032bf798 EFLAGS: 00010246 RAX: 0000000000000000 RBX: 0000000000000001 RCX: ffffc90006139000 RDX: 0000000000040000 RSI: ffffffff8189c943 RDI: ffffff8da63d8000 RBP: dffffc0000000000 R08: 0000000000000001 R09: ffffed100946ce5f R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000 R13: ffffff8da63d8000 R14: ffffff8da63d8000 R15: dffffc0000000000 FS: 00007f91508b96c0(0000) GS:ffff88806b200000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: ffffff8da63d8000 CR3: 0000000047b1c000 CR4: 0000000000350ef0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 ---------------- Code disassembly (best guess): 0: 00 00 add %al,(%rax) 2: 48 89 44 24 70 mov %rax,0x70(%rsp) 7: 31 c0 xor %eax,%eax 9: e8 ad 1b 04 00 call 0x41bbb e: 4c 89 f0 mov %r14,%rax 11: 48 c1 e8 03 shr $0x3,%rax 15: 0f b6 04 28 movzbl (%rax,%rbp,1),%eax 19: 84 c0 test %al,%al 1b: 74 08 je 0x25 1d: 3c 03 cmp $0x3,%al 1f: 0f 8e 8b 02 00 00 jle 0x2b0 25: 4c 8b 74 24 08 mov 0x8(%rsp),%r14 * 2a: 45 8b 3e mov (%r14),%r15d <-- trapping instruction 2d: 44 89 3c 24 mov %r15d,(%rsp) 31: bf 05 00 00 00 mov $0x5,%edi 36: 44 89 fe mov %r15d,%esi 39: e8 7d 16 04 00 call 0x416bb 3e: 41 rex.B 3f: 83 .byte 0x83