Unable to handle kernel NULL pointer dereference at virtual address 0000000000000008
Mem abort info:
  ESR = 0x0000000096000006
  EC = 0x25: DABT (current EL), IL = 32 bits
  SET = 0, FnV = 0
  EA = 0, S1PTW = 0
  FSC = 0x06: level 2 translation 
  FSC = 0x06: level 2 translation fault
Data abort info:
  ISV = 0, ISS = 0x00000006, ISS2 = 0x00000000
  CM = 0, WnR = 0, TnD = 0, TagAccess = 0
  GCS = 0, Overlay = 0, DirtyBit = 0, Xs = 0
user pgtable: 4k pages, 52-bit VAs, pgdp=0000000043d14800
[0000000000000008] pgd=0800000044209403, p4d=0800000051e6f403, pud=08000000443af403, pmd=0000000000000000
Internal error: Oops: 0000000096000006 [#1]  SMP
Modules linked in:
CPU: 0 UID: 0 PID: 4117 Comm: syz.3.78 Not tainted 6.15.0-rc5-syzkaller-g92a09c47464d #0 PREEMPT 
Hardware name: linux,dummy-virt (DT)
pstate: 41402009 (nZcv daif +PAN -UAO -TCO +DIT -SSBS BTYPE=--)
pc : bdev_nr_sectors include/linux/blkdev.h:809 [inline]
pc : guard_bio_eod+0x18/0x210 block/bio.c:694
lr : mpage_bio_submit_read fs/mpage.c:74 [inline]
lr : do_mpage_readpage+0x2d0/0x6dc fs/mpage.c:296
sp : ffff800089bdb5c0
x29: ffff800089bdb5c0 x28: fbf0000003d0ee00 x27: ffff800089bdb700
x26: 0000000000000000 x25: ffff800089bdb6e0 x24: 0000000000000000
x23: 0000000000000000 x22: 0000000000000000 x21: ffffc1ffc0455600
x20: 0000000000000010 x19: fbf0000003d0ee00 x18: 0000000000000014
x17: 00000000c9b3f2bd x16: 000000008ca79918 x15: 0000000000000000
x14: ffffc1ffc0455600 x13: 0000000000000000 x12: fbf0000003d0ee00
x11: 0000000000000000 x10: fff000007f9ff330 x9 : 0000000000092880
x8 : 00000000ffff8000 x7 : dead000000000100 x6 : f5f0000005f28000
x5 : f5f0000005f28000 x4 : 0000000000000000 x3 : 0000000000000000
x2 : 0000000000000000 x1 : ffff8000803bc570 x0 : 0000000000000000
Call trace:
 bdev_nr_sectors include/linux/blkdev.h:809 [inline] (P)
 guard_bio_eod+0x18/0x210 block/bio.c:694 (P)
 mpage_bio_submit_read fs/mpage.c:74 [inline]
 do_mpage_readpage+0x2d0/0x6dc fs/mpage.c:296
 mpage_readahead+0xcc/0x164 fs/mpage.c:371
 blkdev_readahead+0x18/0x24 block/fops.c:472
 read_pages+0x70/0x2b8 mm/readahead.c:160
 page_cache_ra_order+0x238/0x400 mm/readahead.c:515
 do_sync_mmap_readahead mm/filemap.c:3262 [inline]
 filemap_fault+0x444/0x924 mm/filemap.c:3403
 __do_fault+0x3c/0x21c mm/memory.c:5098
 do_read_fault mm/memory.c:5518 [inline]
 do_fault mm/memory.c:5652 [inline]
 do_pte_missing mm/memory.c:4160 [inline]
 handle_pte_fault mm/memory.c:5997 [inline]
 __handle_mm_fault+0xcb0/0x1b00 mm/memory.c:6140
 handle_mm_fault+0x164/0x314 mm/memory.c:6309
 do_page_fault+0x1b8/0x688 arch/arm64/mm/fault.c:690
 do_translation_fault+0xac/0xbc arch/arm64/mm/fault.c:783
 do_mem_abort+0x44/0x94 arch/arm64/mm/fault.c:919
 el1_abort+0x40/0x60 arch/arm64/kernel/entry-common.c:432
 el1h_64_sync_handler+0xa4/0x120 arch/arm64/kernel/entry-common.c:510
 el1h_64_sync+0x6c/0x70 arch/arm64/kernel/entry.S:595
 blkdev_bszset+0x8c/0x13c block/ioctl.c:544 (P)
 blkdev_ioctl+0x2e8/0x38c block/ioctl.c:687
 vfs_ioctl fs/ioctl.c:51 [inline]
 __do_sys_ioctl fs/ioctl.c:906 [inline]
 __se_sys_ioctl fs/ioctl.c:892 [inline]
 __arm64_sys_ioctl+0xb4/0xe8 fs/ioctl.c:892
 __invoke_syscall arch/arm64/kernel/syscall.c:35 [inline]
 invoke_syscall+0x48/0x110 arch/arm64/kernel/syscall.c:49
 el0_svc_common.constprop.0+0x40/0xe0 arch/arm64/kernel/syscall.c:132
 do_el0_svc+0x1c/0x28 arch/arm64/kernel/syscall.c:151
 el0_svc+0x30/0xe0 arch/arm64/kernel/entry-common.c:744
 el0t_64_sync_handler+0x10c/0x138 arch/arm64/kernel/entry-common.c:762
 el0t_64_sync+0x1a4/0x1a8 arch/arm64/kernel/entry.S:600
Code: 910003fd a90153f3 aa0003f3 f9400400 (f9400400) 
---[ end trace 0000000000000000 ]---
----------------
Code disassembly (best guess):
   0:	910003fd 	mov	x29, sp
   4:	a90153f3 	stp	x19, x20, [sp, #16]
   8:	aa0003f3 	mov	x19, x0
   c:	f9400400 	ldr	x0, [x0, #8]
* 10:	f9400400 	ldr	x0, [x0, #8] <-- trapping instruction