el0t_64_sync_handler+0x84/0xf0 arch/arm64/kernel/entry-common.c:655
 el0t_64_sync+0x18c/0x190 arch/arm64/kernel/entry.S:589
Unable to handle kernel paging request at virtual address dfff800000000005
KASAN: null-ptr-deref in range [0x0000000000000028-0x000000000000002f]
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
[dfff800000000005] address between user and kernel address ranges
Internal error: Oops: 0000000096000006 [#1] PREEMPT SMP
Modules linked in:
CPU: 0 PID: 6179 Comm: syz.1.403 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 11/06/2026
pstate: 82400005 (Nzcv daif +PAN -UAO +TCO -DIT -SSBS BTYPE=--)
pc : generic_test_bit include/asm-generic/bitops/generic-non-atomic.h:128 [inline]
pc : raid5_has_ppl drivers/md/raid5-log.h:54 [inline]
pc : log_exit drivers/md/raid5-log.h:128 [inline]
pc : free_conf+0x88/0x520 drivers/md/raid5.c:7419
lr : free_conf+0x34/0x520 drivers/md/raid5.c:7416
sp : ffff800022497510
x29: ffff800022497520 x28: 1fffe0001bde7566 x27: dfff800000000000
x26: ffff0000c3dc4028 x25: ffff700004492ec4 x24: 1fffe0001bde7567
x23: ffff0000c3dc4000 x22: dfff800000000000 x21: 0000000000000000
x20: 0000000000000028 x19: ffff0000def3a000 x18: 1fffe00033c2597e
x17: 0000000000000000 x16: ffff800011ba16d0 x15: 0000000000000000
x14: 0000000000000001 x13: 1ffff00002cd02ea x12: ffff80000ea50470
x11: ff0080000ea52aac x10: 0000000000000000 x9 : ffff80000ea52aac
x8 : 0000000000000005 x7 : 0000000000000001 x6 : 0000000000000001
x5 : 00000000ffffffff x4 : 0000000000000dc0 x3 : 0000000000008000
x2 : 0000000000005000 x1 : ffff8000121e3380 x0 : ffff0000def3a000
Call trace:
 generic_test_bit include/asm-generic/bitops/generic-non-atomic.h:128 [inline]
 raid5_has_ppl drivers/md/raid5-log.h:54 [inline]
 log_exit drivers/md/raid5-log.h:128 [inline]
 free_conf+0x88/0x520 drivers/md/raid5.c:7419
 setup_conf+0x118c/0x2230 drivers/md/raid5.c:7752
 raid5_run+0x6c0/0x24c4 drivers/md/raid5.c:7931
 md_run+0xe14/0x1de0 drivers/md/md.c:6028
 do_md_run+0x4c/0x4a4 drivers/md/md.c:6160
 md_ioctl+0x1ffc/0x25cc drivers/md/md.c:7823
 blkdev_ioctl+0x654/0xb74 block/ioctl.c:626
 vfs_ioctl fs/ioctl.c:51 [inline]
 __do_sys_ioctl fs/ioctl.c:870 [inline]
 __se_sys_ioctl fs/ioctl.c:856 [inline]
 __arm64_sys_ioctl+0x14c/0x1c8 fs/ioctl.c:856
 __invoke_syscall arch/arm64/kernel/syscall.c:38 [inline]
 invoke_syscall+0x98/0x290 arch/arm64/kernel/syscall.c:52
 el0_svc_common+0x13c/0x258 arch/arm64/kernel/syscall.c:140
 do_el0_svc+0x5c/0x134 arch/arm64/kernel/syscall.c:204
 el0_svc+0x58/0x12c arch/arm64/kernel/entry-common.c:637
 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: 967aa5e7 f9400288 9100a114 d343fe88 (38766908) 
---[ end trace 0000000000000000 ]---
----------------
Code disassembly (best guess):
   0:	967aa5e7 	bl	0xfffffffff9ea979c
   4:	f9400288 	ldr	x8, [x20]
   8:	9100a114 	add	x20, x8, #0x28
   c:	d343fe88 	lsr	x8, x20, #3
* 10:	38766908 	ldrb	w8, [x8, x22] <-- trapping instruction