Unable to handle kernel NULL pointer dereference at virtual address 0000000000000000
Mem abort info:
  ESR = 0x0000000086000006
  EC = 0x21: IABT (current EL), IL = 32 bits
  SET = 0, FnV = 0
  EA = 0, S1PTW = 0
  FSC = 0x06: level 2 translation fault
user pgtable: 4k pages, 48-bit VAs, pgdp=000000011d4a3000
[0000000000000000] pgd=080000011d4a0003
, p4d=080000011d4a0003
, pud=08000001249cd003
, pmd=0000000000000000

Internal error: Oops: 0000000086000006 [#1] PREEMPT SMP
Modules linked in:
CPU: 0 PID: 7257 Comm: syz.4.632 Not tainted 6.1.117-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024
pstate: 80400005 (Nzcv daif +PAN -UAO -TCO -DIT -SSBS BTYPE=--)
pc : 0x0
lr : __lookup_slow+0x250/0x374 fs/namei.c:1690
sp : ffff8000225e7020
x29: ffff8000225e7100 x28: 0000000010000000 x27: 1fffe0001c22edd6
x26: dfff800000000000 x25: ffff7000044bce08 x24: ffff8000225e7060
x23: ffff0000f15f8018 x22: ffff8000225e7180 x21: ffff8000124ac440
x20: 0000000000000000 x19: ffff0000e1176eb0 x18: ffff8000225e6b80
x17: ffff800018aab000 x16: ffff800012295aec x15: ffff80001858bf80
x14: 000000002c99bfa8 x13: dfff800000000000 x12: 0000000000040000
x11: 0000000000ff0100 x10: 0000000000000002 x9 : ffff0000d5b68000
x8 : 0000000000000000 x7 : 0000000000000000 x6 : 0000000000000000
x5 : ffff800018e0c198 x4 : 0000000000000001 x3 : ffff800008aa304c
x2 : 0000000000000000 x1 : ffff0000e1176eb0 x0 : ffff0000f15f8018
Call trace:
 0x0
 lookup_slow fs/namei.c:1707 [inline]
 lookup_one_unlocked+0x144/0x254 fs/namei.c:2801
 ovl_lookup_positive_unlocked fs/overlayfs/namei.c:207 [inline]
 ovl_lookup_single+0x110/0x8d0 fs/overlayfs/namei.c:233
 ovl_lookup_layer+0x368/0x454 fs/overlayfs/namei.c:320
 ovl_lookup+0x8f8/0x1ab4 fs/overlayfs/namei.c:923
 lookup_open fs/namei.c:3460 [inline]
 open_last_lookups fs/namei.c:3550 [inline]
 path_openat+0xd3c/0x2548 fs/namei.c:3780
 do_filp_open+0x1bc/0x3cc fs/namei.c:3810
 do_sys_openat2+0x128/0x3e0 fs/open.c:1318
 do_sys_open fs/open.c:1334 [inline]
 __do_sys_openat fs/open.c:1350 [inline]
 __se_sys_openat fs/open.c:1345 [inline]
 __arm64_sys_openat+0x1f0/0x240 fs/open.c:1345
 __invoke_syscall arch/arm64/kernel/syscall.c:38 [inline]
 invoke_syscall+0x98/0x2bc arch/arm64/kernel/syscall.c:52
 el0_svc_common+0x138/0x258 arch/arm64/kernel/syscall.c:140
 do_el0_svc+0x58/0x13c arch/arm64/kernel/syscall.c:204
 el0_svc+0x58/0x168 arch/arm64/kernel/entry-common.c:637
 el0t_64_sync_handler+0x84/0xf0 arch/arm64/kernel/entry-common.c:655
 el0t_64_sync+0x18c/0x190 arch/arm64/kernel/entry.S:585
Code: bad PC value
---[ end trace 0000000000000000 ]---