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=000000014838e000
[0000000000000000] pgd=0800000164be1003, p4d=0800000164be1003, pud=0800000146fe1003, pmd=0000000000000000
Internal error: Oops: 0000000086000006 [#1] PREEMPT SMP
Modules linked in:
CPU: 0 PID: 18631 Comm: f2fs_ckpt-7:0 Not tainted 6.0.0-rc7-syzkaller-18095-gbbed346d5a96 #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 : 0x0
lr : folio_mark_dirty+0xbc/0x218 mm/page-writeback.c:2748
sp : ffff800015e13c00
x29: ffff800015e13c00 x28: 0000000000000000 x27: ffff800015e13d98
x26: 0000000000000001 x25: 0000000000000400 x24: 0000000000000001
x23: ffff000136cb3000 x22: 0000000000000004 x21: 05ffc00000000015
x20: ffff00011a2783b8 x19: fffffc0004a6ddc0 x18: 000000000000ba7e
x17: 000000000000b67e x16: ffff80000db49158 x15: 0000000000000000
x14: 0000000000000000 x13: 0000000000000000 x12: 0000000000000000
x11: ff808000083e4214 x10: 0000000000000000 x9 : ffff8000083e4214
x8 : 0000000000000000 x7 : 0000000000000000 x6 : 0000000000000000
x5 : ffff000129b78000 x4 : ffff000121842000 x3 : ffff000129b77f80
x2 : fffffffffffffff0 x1 : fffffc0004a6ddc0 x0 : ffff00011a2783b8
Call trace:
 0x0
 set_page_dirty+0x38/0xbc mm/folio-compat.c:62
 f2fs_update_meta_page+0x80/0xa8 fs/f2fs/segment.c:2369
 do_checkpoint+0x794/0xee8 fs/f2fs/checkpoint.c:1522
 f2fs_write_checkpoint+0x3b8/0x568 fs/f2fs/checkpoint.c:1679
 __write_checkpoint_sync fs/f2fs/checkpoint.c:1750 [inline]
 __checkpoint_and_complete_reqs+0x9c/0x290 fs/f2fs/checkpoint.c:1769
 issue_checkpoint_thread+0x5c/0x17c fs/f2fs/checkpoint.c:1800
 kthread+0x12c/0x158 kernel/kthread.c:376
 ret_from_fork+0x10/0x20 arch/arm64/kernel/entry.S:860
Code: bad PC value
---[ end trace 0000000000000000 ]---