Unable to handle kernel paging request at virtual address dfff800000000009
KASAN: null-ptr-deref in range [0x0000000000000048-0x000000000000004f]
Mem abort info:
  ESR = 0x0000000096000005
  EC = 0x25: DABT (current EL), IL = 32 bits
  SET = 0, FnV = 0
  EA = 0, S1PTW = 0
  FSC = 0x05: level 1 translation fault
Data abort info:
  ISV = 0, ISS = 0x00000005, ISS2 = 0x00000000
  CM = 0, WnR = 0, TnD = 0, TagAccess = 0
  GCS = 0, Overlay = 0, DirtyBit = 0, Xs = 0
[dfff800000000009] address between user and kernel address ranges
Internal error: Oops: 0000000096000005 [#1]  SMP
Modules linked in:
CPU: 1 UID: 0 PID: 4150 Comm: syz.1.293 Not tainted 6.15.0-rc7-syzkaller-00099-g94305e83eccb #0 PREEMPT 
Hardware name: linux,dummy-virt (DT)
pstate: 60000005 (nZCv daif -PAN -UAO -TCO -DIT -SSBS BTYPE=--)
pc : is_anon_ns fs/mount.h:165 [inline]
pc : do_move_mount+0x148/0x1880 fs/namespace.c:3648
lr : do_move_mount+0x30/0x1880 fs/namespace.c:3626
sp : ffff8000a0067c20
x29: ffff8000a0067c20 x28: ffff0000133e2200 x27: ffff0000133e2200
x26: ffff0000173f9880 x25: ffff0000173f98a0 x24: ffff8000a0067d90
x23: ffff8000a0067d70 x22: 0000000000000000 x21: ffff0000173f9880
x20: 0000000000000000 x19: ffff000016ea3800 x18: 0000000000000016
x17: 0000000000000000 x16: 0000000000000000 x15: 0000000000000005
x14: 00000000000197c7 x13: 0000000000000000 x12: 0000000000000000
x11: 1ffff0001400cfae x10: 1ffff0001400cfb2 x9 : 0000000000000048
x8 : 0000000000000009 x7 : ffff00001a6ac720 x6 : ffff700010e12aff
x5 : ffff8000870957f8 x4 : 1fffe00002e7f32f x3 : 0000000000000000
x2 : 1fffe00001c78251 x1 : 0000000000000000 x0 : dfff800000000000
Call trace:
 check_mnt fs/namespace.c:1003 [inline] (P)
 may_use_mount fs/namespace.c:3601 [inline] (P)
 do_move_mount+0x148/0x1880 fs/namespace.c:3640 (P)
 vfs_move_mount fs/namespace.c:4605 [inline]
 vfs_move_mount fs/namespace.c:4593 [inline]
 __do_sys_move_mount fs/namespace.c:4685 [inline]
 __se_sys_move_mount fs/namespace.c:4616 [inline]
 __arm64_sys_move_mount+0x25c/0x4f0 fs/namespace.c:4616
 __invoke_syscall arch/arm64/kernel/syscall.c:35 [inline]
 invoke_syscall+0x6c/0x258 arch/arm64/kernel/syscall.c:49
 el0_svc_common.constprop.0+0xac/0x230 arch/arm64/kernel/syscall.c:132
 do_el0_svc_compat+0x40/0x68 arch/arm64/kernel/syscall.c:157
 el0_svc_compat+0x4c/0x17c arch/arm64/kernel/entry-common.c:887
 el0t_32_sync_handler+0x98/0x13c arch/arm64/kernel/entry-common.c:897
 el0t_32_sync+0x19c/0x1a0 arch/arm64/kernel/entry.S:605
Code: d2d00000 f2fbffe0 d343fd28 f9400f7b (38e06900) 
---[ end trace 0000000000000000 ]---
----------------
Code disassembly (best guess):
   0:	d2d00000 	mov	x0, #0x800000000000        	// #140737488355328
   4:	f2fbffe0 	movk	x0, #0xdfff, lsl #48
   8:	d343fd28 	lsr	x8, x9, #3
   c:	f9400f7b 	ldr	x27, [x27, #24]
* 10:	38e06900 	ldrsb	w0, [x8, x0] <-- trapping instruction