Unable to handle kernel NULL pointer dereference at virtual address 0000000000000008
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
user pgtable: 4k pages, 48-bit VAs, pgdp=000000010ed8b000
[0000000000000008] pgd=080000010edbc003, p4d=080000010edbc003, pud=080000010ecfe003, pmd=0000000000000000
Internal error: Oops: 0000000096000006 [#1] PREEMPT SMP
Modules linked in:
CPU: 0 PID: 3745 Comm: syz-executor233 Not tainted 6.1.0-rc5-syzkaller-32269-g9500fc6e9e60 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/30/2022
pstate: 80400005 (Nzcv daif +PAN -UAO -TCO -DIT -SSBS BTYPE=--)
pc : __rb_insert lib/rbtree.c:115 [inline]
pc : rb_insert_color+0x38/0x168 lib/rbtree.c:436
lr : kernfs_link_sibling+0x140/0x1ac fs/kernfs/dir.c:377
sp : ffff800014403700
x29: ffff800014403700 x28: ffff0000c6960000 x27: ffff00004c2e3040
x26: ffff00004c2e2ff0 x25: 0000000000000000 x24: ffff00004c2e3030
x23: ffff00004c2e3038 x22: 0000000000000000 x21: ffff0000cec28c00
x20: ffff0000c914d628 x19: ffff0000c914d5e8 x18: 00000000000003b9
x17: 0000000000000003 x16: ffff80000dc18158 x15: ffff0000c6960000
x14: 0000000000000008 x13: 00000000ffffffff x12: ffff0000c6960000
x11: ff80800008706908 x10: 0000000000000000 x9 : ffff00004c2e3030
x8 : 0000000000000000 x7 : 7f7f7f7f7f7f7f7f x6 : fefefefefefefeff
x5 : 8080808080808080 x4 : 0000000000000030 x3 : 0000000000000000
x2 : 00003337362d7039 x1 : ffff0000c4bf2460 x0 : ffff0000c914d628
Call trace:
 __rb_insert lib/rbtree.c:110 [inline]
 rb_insert_color+0x38/0x168 lib/rbtree.c:436
 kernfs_add_one+0x180/0x240 fs/kernfs/dir.c:755
 kernfs_create_dir_ns+0xcc/0x144 fs/kernfs/dir.c:1021
 sysfs_create_dir_ns+0x8c/0x168 fs/sysfs/dir.c:59
 create_dir lib/kobject.c:63 [inline]
 kobject_add_internal+0x244/0x530 lib/kobject.c:223
 kobject_add_varg lib/kobject.c:358 [inline]
 kobject_add+0xb8/0x130 lib/kobject.c:410
 device_add+0x248/0x958 drivers/base/core.c:3452
 device_create_groups_vargs+0xf4/0x15c drivers/base/core.c:4194
 device_create+0x88/0xbc drivers/base/core.c:4236
 bdi_register_va+0x8c/0x328 mm/backing-dev.c:869
 super_setup_bdi_name+0x84/0x120 fs/super.c:1590
 super_setup_bdi+0x50/0x8c fs/super.c:1612
 v9fs_fill_super fs/9p/vfs_super.c:76 [inline]
 v9fs_mount+0x1a4/0x568 fs/9p/vfs_super.c:137
 legacy_get_tree+0x30/0x74 fs/fs_context.c:610
 vfs_get_tree+0x40/0x140 fs/super.c:1531
 do_new_mount+0x1dc/0x4e4 fs/namespace.c:3040
 path_mount+0x358/0x890 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]
 __arm64_sys_mount+0x2c4/0x3c4 fs/namespace.c:3568
 __invoke_syscall arch/arm64/kernel/syscall.c:38 [inline]
 invoke_syscall arch/arm64/kernel/syscall.c:52 [inline]
 el0_svc_common+0x138/0x220 arch/arm64/kernel/syscall.c:142
 do_el0_svc+0x48/0x164 arch/arm64/kernel/syscall.c:206
 el0_svc+0x58/0x150 arch/arm64/kernel/entry-common.c:637
 el0t_64_sync_handler+0x84/0xf0 arch/arm64/kernel/entry-common.c:655
 el0t_64_sync+0x190/0x194 arch/arm64/kernel/entry.S:584
Code: f9000109 b4000949 f9400128 370008c8 (f940050a) 
---[ end trace 0000000000000000 ]---
----------------
Code disassembly (best guess):
   0:	f9000109 	str	x9, [x8]
   4:	b4000949 	cbz	x9, 0x12c
   8:	f9400128 	ldr	x8, [x9]
   c:	370008c8 	tbnz	w8, #0, 0x124
* 10:	f940050a 	ldr	x10, [x8, #8] <-- trapping instruction