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=0000000124c0c000
[0000000000000000] pgd=0800000116868403, p4d=0800000116868403, pud=0800000115bcd403, pmd=0000000000000000
Internal error: Oops: 0000000086000006 [#1] PREEMPT SMP
Modules linked in:
CPU: 1 UID: 0 PID: 7644 Comm: syz.2.221 Not tainted 6.12.0-rc7-syzkaller-gbaa007e8da32 #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 : generic_perform_write+0x29c/0x868 mm/filemap.c:4054
sp : ffff80009cd378a0
x29: ffff80009cd379c0 x28: dfff800000000000 x27: ffff80009cd37bc8
x26: 0000000000000000 x25: ffff80009cd37960 x24: ffff80008b9444a8
x23: 0000000000000000 x22: ffff0000d457dac0 x21: 0000000000001000
x20: 0000000000000000 x19: 1ffff000139a6f2c x18: ffff0000ee23c024
x17: 000000000003d3db x16: ffff8000830cd010 x15: 0000000000000001
x14: 0000000000000002 x13: 0000000000000001 x12: ffff0000d457dac0
x11: 0000000000040000 x10: 0000000000000855 x9 : ffff8000a460d000
x8 : 0000000000000000 x7 : ffff80008047f338 x6 : 0000000000000000
x5 : ffff80009cd37980 x4 : ffff80009cd37960 x3 : 0000000000001000
x2 : 0000000000000000 x1 : ffff0000ee23bf30 x0 : ffff0000e49b4a80
Call trace:
 0x0 (P)
 generic_perform_write+0x29c/0x868 mm/filemap.c:4054 (L)
 __generic_file_write_iter+0xfc/0x204 mm/filemap.c:4155
 ntfs_file_write_iter+0x54c/0x630 fs/ntfs3/file.c:1259
 new_sync_write fs/read_write.c:590 [inline]
 vfs_write+0x920/0xcf4 fs/read_write.c:683
 ksys_write+0x15c/0x26c fs/read_write.c:736
 __do_sys_write fs/read_write.c:748 [inline]
 __se_sys_write fs/read_write.c:745 [inline]
 __arm64_sys_write+0x7c/0x90 fs/read_write.c:745
 __invoke_syscall arch/arm64/kernel/syscall.c:35 [inline]
 invoke_syscall+0x98/0x2b8 arch/arm64/kernel/syscall.c:49
 el0_svc_common+0x130/0x23c arch/arm64/kernel/syscall.c:132
 do_el0_svc+0x48/0x58 arch/arm64/kernel/syscall.c:151
 el0_svc+0x54/0x168 arch/arm64/kernel/entry-common.c:744
 el0t_64_sync_handler+0x84/0x108 arch/arm64/kernel/entry-common.c:762
 el0t_64_sync+0x198/0x19c arch/arm64/kernel/entry.S:600
Code: ???????? ???????? ???????? ???????? (????????) 
---[ end trace 0000000000000000 ]---