loop4: detected capacity change from 0 to 4096
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=0000000122844000
[0000000000000000] pgd=08000001228dc003, p4d=08000001228dc003, pud=0000000000000000
Internal error: Oops: 0000000086000005 [#1] PREEMPT SMP
Modules linked in:
CPU: 0 PID: 4533 Comm: syz.4.135 Not tainted 5.15.178-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 12/27/2024
pstate: 80400005 (Nzcv daif +PAN -UAO -TCO -DIT -SSBS BTYPE=--)
pc : 0x0
lr : set_page_dirty+0x23c/0x544 mm/page-writeback.c:2631
sp : ffff80001fad7a90
x29: ffff80001fad7a90 x28: 0000000000000000 x27: 0000000000000010
x26: 0000000000000000 x25: 1fffff80007639d9 x24: dfff800000000000
x23: 0000000000000000 x22: 05ffc00000000007 x21: ffff0000e0b7f318
x20: ffff800011fa2378 x19: fffffc0003b1cec0 x18: ffff80001fad7268
x17: 0000000000000002 x16: ffff800011b4e58c x15: ffff80000897186c
x14: 1ffff0000296e06c x13: dfff800000000000 x12: 0000000000080000
x11: 0000000000001a7e x10: ffff8000261f9000 x9 : 0000000000001a7f
x8 : 0000000000000000 x7 : 0000000000000000 x6 : 000000000000003f
x5 : 0000000000000040 x4 : 0000000000000000 x3 : ffff8000096504a4
x2 : 0000000000000001 x1 : 0000000000000000 x0 : fffffc0003b1cec0
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 27f2bbfdc5a06892 ]---