xfrm0 speed is unknown, defaulting to 1000
Oops: general protection fault, probably for non-canonical address 0xdffffc001fffe000: 0000 [#1] SMP KASAN NOPTI
KASAN: probably user-memory-access in range [0x00000000ffff0000-0x00000000ffff0007]
CPU: 2 UID: 0 PID: 14340 Comm: kworker/2:4 Not tainted 6.16.0-rc7-syzkaller-00034-g25fae0b93d1d #0 PREEMPT(full) 
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2~bpo12+1 04/01/2014
Workqueue: mld mld_ifc_work
RIP: 0010:add_grec+0xa77/0x1680 net/ipv6/mcast.c:1967
Code: 5f 3e 7e f7 e8 ba d7 48 01 31 ff 41 89 c5 89 c6 e8 8e 39 7e f7 45 85 ed 0f 85 76 02 00 00 e8 40 3e 7e f7 4c 89 f8 48 c1 e8 03 <42> 80 3c 20 00 0f 85 de 09 00 00 48 8b 7c 24 70 44 8b 44 24 6c 4c
RSP: 0018:ffffc9000da1fae0 EFLAGS: 00010206
RAX: 000000001fffe000 RBX: 0000000000000000 RCX: ffffffff8a3dacc8
RDX: ffff88802a658000 RSI: ffffffff8a3daa30 RDI: 0000000000000005
RBP: ffffc9000da1fbe8 R08: 0000000000000005 R09: 0000000000000000
R10: 0000000000000001 R11: 0000000000000001 R12: dffffc0000000000
R13: 0000000000000001 R14: 0000000000000001 R15: 00000000ffff0000
FS:  0000000000000000(0000) GS:ffff8880d6920000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fe69e5802d8 CR3: 00000000290c2000 CR4: 0000000000352ef0
Call Trace:
 <TASK>
 mld_send_cr net/ipv6/mcast.c:2155 [inline]
 mld_ifc_work+0x392/0xca0 net/ipv6/mcast.c:2702
 process_one_work+0x9cf/0x1b70 kernel/workqueue.c:3238
 process_scheduled_works kernel/workqueue.c:3321 [inline]
 worker_thread+0x6c8/0xf10 kernel/workqueue.c:3402
 kthread+0x3c5/0x780 kernel/kthread.c:464
 ret_from_fork+0x5d4/0x6f0 arch/x86/kernel/process.c:148
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245
 </TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:add_grec+0xa77/0x1680 net/ipv6/mcast.c:1967
Code: 5f 3e 7e f7 e8 ba d7 48 01 31 ff 41 89 c5 89 c6 e8 8e 39 7e f7 45 85 ed 0f 85 76 02 00 00 e8 40 3e 7e f7 4c 89 f8 48 c1 e8 03 <42> 80 3c 20 00 0f 85 de 09 00 00 48 8b 7c 24 70 44 8b 44 24 6c 4c
RSP: 0018:ffffc9000da1fae0 EFLAGS: 00010206
RAX: 000000001fffe000 RBX: 0000000000000000 RCX: ffffffff8a3dacc8
RDX: ffff88802a658000 RSI: ffffffff8a3daa30 RDI: 0000000000000005
RBP: ffffc9000da1fbe8 R08: 0000000000000005 R09: 0000000000000000
R10: 0000000000000001 R11: 0000000000000001 R12: dffffc0000000000
R13: 0000000000000001 R14: 0000000000000001 R15: 00000000ffff0000
FS:  0000000000000000(0000) GS:ffff8880d6920000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fe69e5802d8 CR3: 00000000290c2000 CR4: 0000000000352ef0
----------------
Code disassembly (best guess):
   0:	5f                   	pop    %rdi
   1:	3e 7e f7             	jle,pt 0xfffffffb
   4:	e8 ba d7 48 01       	call   0x148d7c3
   9:	31 ff                	xor    %edi,%edi
   b:	41 89 c5             	mov    %eax,%r13d
   e:	89 c6                	mov    %eax,%esi
  10:	e8 8e 39 7e f7       	call   0xf77e39a3
  15:	45 85 ed             	test   %r13d,%r13d
  18:	0f 85 76 02 00 00    	jne    0x294
  1e:	e8 40 3e 7e f7       	call   0xf77e3e63
  23:	4c 89 f8             	mov    %r15,%rax
  26:	48 c1 e8 03          	shr    $0x3,%rax
* 2a:	42 80 3c 20 00       	cmpb   $0x0,(%rax,%r12,1) <-- trapping instruction
  2f:	0f 85 de 09 00 00    	jne    0xa13
  35:	48 8b 7c 24 70       	mov    0x70(%rsp),%rdi
  3a:	44 8b 44 24 6c       	mov    0x6c(%rsp),%r8d
  3f:	4c                   	rex.WR