Unable to handle kernel NULL pointer dereference at virtual address 00000000000000e0
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
user pgtable: 4k pages, 48-bit VAs, pgdp=00000001553b8000
[00000000000000e0] pgd=0800000158c1a003, p4d=0800000158c1a003, pud=0000000000000000
Internal error: Oops: 0000000096000006 [#1] PREEMPT SMP
Modules linked in:
CPU: 0 PID: 21644 Comm: kworker/0:19 Not tainted 6.0.0-rc7-syzkaller-18095-gbbed346d5a96 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/30/2022
Workqueue: ipv6_addrconf addrconf_dad_work
pstate: 80400005 (Nzcv daif +PAN -UAO -TCO -DIT -SSBS BTYPE=--)
pc : add_grec+0x5c/0xae0 net/ipv6/mcast.c:1885
lr : add_grec+0x50/0xae0 net/ipv6/mcast.c:1882
sp : ffff80001f443b40
x29: ffff80001f443b90 x28: ffff00013d1f4c00 x27: ffff00012fb24800
x26: 0000000000000000 x25: 0000000000000004 x24: 0000000000000000
x23: ffff80000cb53497 x22: 0000000000000005 x21: 0000000000000000
x20: ffff00011c38ac00 x19: ffff00013eb11600 x18: 000000000000032f
x17: ffff80000bffd6bc x16: ffff80000db49158 x15: ffff000126a7cf80
x14: 0000000000000080 x13: 00000000ffffffff x12: ffff000126a7cf80
x11: ff8080000b7a1af8 x10: 0000000000000000 x9 : ffff000126a7cf80
x8 : 0000000000000000 x7 : ffff80000b741a80 x6 : 0000000000000000
x5 : 0000000000000001 x4 : 0000000000000000 x3 : 0000000000000000
x2 : 0000000000000005 x1 : 0000000000000000 x0 : 0000000000000500
Call trace:
 add_grec+0x5c/0xae0 net/ipv6/mcast.c:1886
 mld_send_initial_cr+0x140/0x270 net/ipv6/mcast.c:2236
 ipv6_mc_dad_complete+0x4c/0x208 net/ipv6/mcast.c:2247
 addrconf_dad_completed+0x2f4/0x540 net/ipv6/addrconf.c:4228
 addrconf_dad_work+0x460/0x504 net/ipv6/addrconf.c:4157
 process_one_work+0x2d8/0x504 kernel/workqueue.c:2289
 worker_thread+0x340/0x610 kernel/workqueue.c:2436
 kthread+0x12c/0x158 kernel/kthread.c:376
 ret_from_fork+0x10/0x20 arch/arm64/kernel/entry.S:860
Code: 972bf98e 37180175 f9400368 5280a000 (b940e115) 
---[ end trace 0000000000000000 ]---
----------------
Code disassembly (best guess):
   0:	972bf98e 	bl	0xfffffffffcafe638
   4:	37180175 	tbnz	w21, #3, 0x30
   8:	f9400368 	ldr	x8, [x27]
   c:	5280a000 	mov	w0, #0x500                 	// #1280
* 10:	b940e115 	ldr	w21, [x8, #224] <-- trapping instruction