Unable to handle kernel paging request at virtual address dfff800000000000
Mem abort info:
  ESR = 0x0000000096000006
  EC = 0x25: DABT (current EL), IL = 32 bits
  SET = 0, FnV = 0
  EA = 0, S1PTW = 0
  FSC = 0x06: level 2 translation fault
Data abort info:
  ISV = 0, ISS = 0x00000006
  CM = 0, WnR = 0
[dfff800000000000] address between user and kernel address ranges
Internal error: Oops: 0000000096000006 [#1] PREEMPT SMP
Modules linked in:
CPU: 1 PID: 4855 Comm: syz.0.15 Not tainted 5.15.182-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/19/2025
pstate: 80400005 (Nzcv daif +PAN -UAO -TCO -DIT -SSBS BTYPE=--)
pc : btrfs_root_node+0xdc/0x3d4 fs/btrfs/ctree.c:132
lr : rcu_read_lock include/linux/rcupdate.h:740 [inline]
lr : btrfs_root_node+0x84/0x3d4 fs/btrfs/ctree.c:131
sp : ffff80001f097250
x29: ffff80001f097250 x28: dfff800000000000 x27: ffff8000116c1e40
x26: 0000000000000001 x25: ffff8000116c25c0 x24: ffff80001658d000
x23: ffff8000116c2600 x22: ffff80001658d000 x21: 0000000000000001
x20: 0000000000000000 x19: 0000000000000000 x18: 0000000000000000
x17: 0000000000000000 x16: ffff8000111a53fc x15: ffff800008974808
x14: ffff8000089712cc x13: 1ffff0000282a06b x12: 0000000000ff0100
x11: 0000000000000000 x10: 0000000000000000 x9 : ffff800009e07824
x8 : ffff0000d5f19b40 x7 : ffff800009e1aee4 x6 : 0000000000000000
x5 : 0000000000000000 x4 : 0000000000000000 x3 : 0000000000000002
x2 : 0000000000000008 x1 : ffff8000117a9520 x0 : 0000000000000001
Call trace:
 rcu_read_lock include/linux/rcupdate.h:740 [inline]
 btrfs_root_node+0xdc/0x3d4 fs/btrfs/ctree.c:131
 btrfs_read_lock_root_node+0x68/0x35c fs/btrfs/locking.c:276
 btrfs_build_ref_tree+0xec/0xf90 fs/btrfs/ref-verify.c:993
 open_ctree+0x1dc0/0x27b8 fs/btrfs/disk-io.c:3609
 btrfs_fill_super+0x1b4/0x2d4 fs/btrfs/super.c:1387
 btrfs_mount_root+0x730/0x780 fs/btrfs/super.c:1751
 legacy_get_tree+0xd4/0x16c fs/fs_context.c:611
 vfs_get_tree+0x90/0x274 fs/super.c:1530
 fc_mount fs/namespace.c:1000 [inline]
 vfs_kern_mount+0xdc/0x178 fs/namespace.c:1030
 btrfs_mount+0x2a0/0x8d4 fs/btrfs/super.c:1811
 legacy_get_tree+0xd4/0x16c fs/fs_context.c:611
 vfs_get_tree+0x90/0x274 fs/super.c:1530
 do_new_mount+0x228/0x810 fs/namespace.c:3013
 path_mount+0x5b4/0x1000 fs/namespace.c:3343
 do_mount fs/namespace.c:3356 [inline]
 __do_sys_mount fs/namespace.c:3564 [inline]
 __se_sys_mount fs/namespace.c:3541 [inline]
 __arm64_sys_mount+0x514/0x5e4 fs/namespace.c:3541
 __invoke_syscall arch/arm64/kernel/syscall.c:38 [inline]
 invoke_syscall+0x98/0x2b8 arch/arm64/kernel/syscall.c:52
 el0_svc_common+0x138/0x258 arch/arm64/kernel/syscall.c:142
 do_el0_svc+0x58/0x14c arch/arm64/kernel/syscall.c:181
 el0_svc+0x78/0x1e0 arch/arm64/kernel/entry-common.c:608
 el0t_64_sync_handler+0xcc/0xe4 arch/arm64/kernel/entry-common.c:626
 el0t_64_sync+0x1a0/0x1a4 arch/arm64/kernel/entry.S:584
Code: 52805ca1 aa1703e2 390ae2da 95cb4634 (387c6a88) 
---[ end trace 5bbbdd79dc69c80a ]---
----------------
Code disassembly (best guess):
   0:	52805ca1 	mov	w1, #0x2e5                 	// #741
   4:	aa1703e2 	mov	x2, x23
   8:	390ae2da 	strb	w26, [x22, #696]
   c:	95cb4634 	bl	0x72d18dc
* 10:	387c6a88 	ldrb	w8, [x20, x28] <-- trapping instruction