Unable to handle kernel paging request at virtual address dfff800000000000
KASAN: null-ptr-deref in range [0x0000000000000000-0x0000000000000007]
Unable to handle kernel paging request at virtual address dfff800000000000
KASAN: null-ptr-deref in range [0x0000000000000000-0x0000000000000007]
Mem abort info:
  ESR = 0x0000000096000006
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 fault
Data abort info:
  ISV = 0, ISS = 0x00000006
  CM = 0, WnR = 0
[dfff800000000000] address between user and kernel address ranges
Internal error: Oops: 0000000096000006 [#1] PREEMPT SMP
Modules linked in:
CPU: 0 PID: 5100 Comm: syz.4.192 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/23/2026
pstate: 82400005 (Nzcv daif +PAN -UAO +TCO -DIT -SSBS BTYPE=--)
pc : __folio_lock_async mm/filemap.c:1704 [inline]
pc : filemap_update_page mm/filemap.c:2558 [inline]
pc : filemap_get_pages mm/filemap.c:2689 [inline]
pc : filemap_read+0xae8/0x20dc mm/filemap.c:2759
lr : filemap_update_page mm/filemap.c:2549 [inline]
lr : filemap_get_pages mm/filemap.c:2689 [inline]
lr : filemap_read+0xa08/0x20dc mm/filemap.c:2759
sp : ffff8000224b6c00
x29: ffff8000224b6ea0 x28: ffff0000da76d680 x27: ffff0000e239a720
x26: 0000000000000000 x25: 0000000000000000 x24: fffffc0003fd1900
x23: ffff0000effe8000 x22: 1fffff80007fa321 x21: 1fffff80007fa320
x20: 0000000000000000 x19: dfff800000000000 x18: 0000000000000000
x17: 0000000000000000 x16: ffff800011ba16d0 x15: 0000000000000000
x14: 0000000000000001 x13: 1fffff80007fa320 x12: 0000000000000000
x11: ff008000086fc358 x10: 0000000000000000 x9 : ffff0000effe8000
x8 : 0000000000000000 x7 : ffff8000086fc0a0 x6 : 0000000000000000
x5 : 0000000000000000 x4 : 0000000000000001 x3 : ffff8000086fc0d0
x2 : 0000000000000001 x1 : 0000000000080000 x0 : 0000000000000000
Call trace:
 __folio_lock_async mm/filemap.c:1704 [inline]
 filemap_update_page mm/filemap.c:2558 [inline]
 filemap_get_pages mm/filemap.c:2689 [inline]
 filemap_read+0xae8/0x20dc mm/filemap.c:2759
 generic_file_read_iter+0xf8/0x5ac mm/filemap.c:2941
 ocfs2_file_read_iter+0x428/0xb98 fs/ocfs2/file.c:2589
 __kernel_read+0x24c/0x5c0 fs/read_write.c:428
 integrity_kernel_read+0x9c/0xe4 security/integrity/iint.c:228
 ima_calc_file_hash_tfm security/integrity/ima/ima_crypto.c:485 [inline]
 ima_calc_file_shash security/integrity/ima/ima_crypto.c:516 [inline]
 ima_calc_file_hash+0x918/0x1560 security/integrity/ima/ima_crypto.c:573
 ima_collect_measurement+0x410/0x950 security/integrity/ima/ima_api.c:293
 ima_update_xattr+0x154/0x49c security/integrity/ima/ima_appraise.c:624
 ima_check_last_writer security/integrity/ima/ima_main.c:175 [inline]
 ima_file_free+0x2b0/0x370 security/integrity/ima/ima_main.c:199
 __fput+0x140/0x7b0 fs/file_table.c:314
 ____fput+0x20/0x30 fs/file_table.c:348
 task_work_run+0x1f4/0x280 kernel/task_work.c:203
 resume_user_mode_work include/linux/resume_user_mode.h:49 [inline]
 do_notify_resume+0x20f8/0x2c84 arch/arm64/kernel/signal.c:1166
 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/0x12c arch/arm64/kernel/entry-common.c:638
 el0t_64_sync_handler+0x84/0xf0 arch/arm64/kernel/entry-common.c:655
 el0t_64_sync+0x18c/0x190 arch/arm64/kernel/entry.S:589
Code: 9407ff99 f94023e8 f9400114 d343fe88 (38736908) 
---[ end trace 0000000000000000 ]---
  EC = 0x25: DABT (current EL), IL = 32 bits
  SET = 0, FnV = 0
  EA = 0, S1PTW = 0
  FSC = 0x06: level 2 translation fault
Data abort info:
  ISV = 0, ISS = 0x00000006
  CM = 0, WnR = 0
[dfff800000000000] address between user and kernel address ranges
Internal error: Oops: 0000000096000006 [#1] PREEMPT SMP
Code: 9407ff99 f94023e8 f9400114 d343fe88 (38736908) 
----------------
Code disassembly (best guess):
   0:	9407ff99 	bl	0x1ffe64
   4:	f94023e8 	ldr	x8, [sp, #64]
   8:	f9400114 	ldr	x20, [x8]
   c:	d343fe88 	lsr	x8, x20, #3
* 10:	38736908 	ldrb	w8, [x8, x19] <-- trapping instruction