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=000000011177b000
[0000000000000000] pgd=080000012970f003, p4d=080000012970f003, pud=0800000127c92003, pmd=0000000000000000
Internal error: Oops: 0000000086000006 [#1] PREEMPT SMP
Modules linked in:
CPU: 0 PID: 4731 Comm: syz.2.97 Not tainted 5.15.175-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 : set_page_dirty+0x23c/0x544 mm/page-writeback.c:2631
sp : ffff800023a77a90
x29: ffff800023a77a90 x28: 0000000000000000 x27: 0000000000000030
x26: fffffc0003bbda08 x25: 1fffff8000755989 x24: dfff800000000000
x23: 0000000000000000 x22: 05ffc00000000015 x21: ffff0000d4109338
x20: ffff800011fa21f8 x19: fffffc0003aacc40 x18: ffff800023a775e0
x17: 0000000000000000 x16: ffff800011b4ec88 x15: 0000000000027503
x14: 1ffff0000296e06c x13: dfff800000000000 x12: 0000000000000000
x11: 0000000000000000 x10: 0000000000000000 x9 : ffff0000cc640000
x8 : 0000000000000000 x7 : 0000000000000000 x6 : 000000000000003f
x5 : 0000000000000040 x4 : 0000000000000000 x3 : 0000000000000004
x2 : 0000000000000000 x1 : 0000000000000000 x0 : fffffc0003aacc40
Call trace:
 0x0
 ntfs_sparse_cluster+0x6b8/0x87c fs/ntfs3/file.c:337
 ntfs_fallocate+0x638/0xc10 fs/ntfs3/file.c:703
 vfs_fallocate+0x478/0x5b4 fs/open.c:308
 ksys_fallocate fs/open.c:331 [inline]
 __do_sys_fallocate fs/open.c:339 [inline]
 __se_sys_fallocate fs/open.c:337 [inline]
 __arm64_sys_fallocate+0xc0/0x110 fs/open.c:337
 __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+0x7c/0x1f0 arch/arm64/kernel/entry-common.c:608
 el0t_64_sync_handler+0x84/0xe4 arch/arm64/kernel/entry-common.c:626
 el0t_64_sync+0x1a0/0x1a4 arch/arm64/kernel/entry.S:584
Code: bad PC value
---[ end trace 7ae4cd84fdc97cc3 ]---