Unable to handle kernel NULL pointer dereference at virtual address 0000000000000000
Mem abort info:
  ESR = 0x0000000086000005
  EC = 0x21: IABT (current EL), IL = 32 bits
  SET = 0, FnV = 0
  EA = 0, S1PTW = 0
  FSC = 0x05: level 1 translation fault
user pgtable: 4k pages, 48-bit VAs, pgdp=0000000114132000
[0000000000000000] pgd=0800000113c9e003, p4d=0800000113c9e003, pud=0000000000000000
Internal error: Oops: 86000005 [#1] PREEMPT SMP
Modules linked in:
CPU: 1 PID: 3220 Comm: syz-executor.4 Not tainted 5.19.0-rc8-syzkaller-01618-g680fb5b009e8 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/20/2022
pstate: 80400005 (Nzcv daif +PAN -UAO -TCO -DIT -SSBS BTYPE=--)
pc : 0x0
lr : folio_mark_dirty+0xbc/0x208 mm/page-writeback.c:2723
sp : ffff80001417b970
x29: ffff80001417b970 x28: 0000000000000000 x27: ffff80001417bb08
x26: 0000000000000001 x25: 0000000000000600 x24: 0000000000000001
x23: ffff0000d4b1cc00 x22: 00000000000007ff x21: 05ffc00000000007
x20: ffff0000d35209e0 x19: fffffc0003cd8c00 x18: 00000000000000c0
x17: ffff80000dcfd698 x16: ffff80000db3b658 x15: 0000000000000000
x14: 0000000000000000 x13: 0000000000000000 x12: 0000000000000000
x11: ff808000083dc6e0 x10: 0000000000000000 x9 : ffff8000083dc6e0
x8 : 0000000000000000 x7 : 0000000000000000 x6 : 0000000000000000
x5 : ffff0000f3631000 x4 : ffff0000d48ae000 x3 : ffff0000f3630f80
x2 : fffffffffffffff0 x1 : fffffc0003cd8c00 x0 : ffff0000d35209e0
Call trace:
 0x0
 set_page_dirty+0x38/0xbc mm/folio-compat.c:84
 f2fs_update_meta_page+0x80/0xa8 fs/f2fs/segment.c:2362
 do_checkpoint+0x75c/0xea8 fs/f2fs/checkpoint.c:1519
 f2fs_write_checkpoint+0x3b8/0x568 fs/f2fs/checkpoint.c:1681
 f2fs_issue_checkpoint+0x1b0/0x234
 f2fs_sync_fs+0x8c/0xc8 fs/f2fs/super.c:1622
 sync_filesystem+0xe0/0x134 fs/sync.c:66
 generic_shutdown_super+0x38/0x190 fs/super.c:445
 kill_block_super+0x30/0x78 fs/super.c:1394
 kill_f2fs_super+0x140/0x184 fs/f2fs/super.c:4516
 deactivate_locked_super+0x70/0xd4 fs/super.c:332
 deactivate_super+0xb8/0xbc fs/super.c:363
 cleanup_mnt+0x1a4/0x1e0 fs/namespace.c:1186
 __cleanup_mnt+0x20/0x30 fs/namespace.c:1193
 task_work_run+0xc4/0x208 kernel/task_work.c:177
 resume_user_mode_work include/linux/resume_user_mode.h:49 [inline]
 do_notify_resume+0x174/0x1d0 arch/arm64/kernel/signal.c:1117
 prepare_exit_to_user_mode arch/arm64/kernel/entry-common.c:137 [inline]
 exit_to_user_mode arch/arm64/kernel/entry-common.c:142 [inline]
 el0_svc+0x9c/0x14c arch/arm64/kernel/entry-common.c:625
 el0t_64_sync_handler+0x84/0xf0 arch/arm64/kernel/entry-common.c:642
 el0t_64_sync+0x18c/0x190
Code: bad PC value
---[ end trace 0000000000000000 ]---