Oops: general protection fault, probably for non-canonical address 0xdffffc001fffe000: 0000 [#1] SMP KASAN PTI
KASAN: probably user-memory-access in range [0x00000000ffff0000-0x00000000ffff0007]
CPU: 0 UID: 0 PID: 13 Comm: kworker/u8:1 Not tainted 6.16.0-rc5-syzkaller-00212-g9f735b6f8a77 #0 PREEMPT(full) 
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.2-debian-1.16.2-1 04/01/2014
Workqueue: netns cleanup_net
RIP: 0010:mld_clear_delrec+0x34a/0x5d0
Code: ff ff ff e8 58 40 41 01 89 c5 31 ff 89 c6 e8 fd 14 94 f7 85 ed 74 40 e8 b4 10 94 f7 eb 05 e8 ad 10 94 f7 4c 89 f8 48 c1 e8 03 <42> 80 3c 28 00 74 08 4c 89 ff e8 a7 24 f6 f7 4d 8b 27 49 8d 7f 30
RSP: 0018:ffffc90000107450 EFLAGS: 00010206
RAX: 000000001fffe000 RBX: ffff88803ec53538 RCX: ffff88801c690000
RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000000000000000
RBP: 0000000000000001 R08: ffffffff8fa1d5f7 R09: 1ffffffff1f43abe
R10: dffffc0000000000 R11: fffffbfff1f43abf R12: ffff888034f3f028
R13: dffffc0000000000 R14: ffff888034f3f000 R15: 00000000ffff0000
FS:  0000000000000000(0000) GS:ffff8880b8626000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fc5e21a7ba8 CR3: 000000000df38000 CR4: 00000000000006f0
Call Trace:
 <TASK>
 ipv6_mc_destroy_dev+0x45/0x5a0
 addrconf_ifdown+0x139e/0x1880
 addrconf_notify+0x1bc/0x1010
 notifier_call_chain+0x1b6/0x3e0
 unregister_netdevice_many_notify+0x15d8/0x2320
 ops_undo_list+0x3dc/0x990
 cleanup_net+0x4c5/0x800
 process_scheduled_works+0xae1/0x17b0
 worker_thread+0x8a0/0xda0
 kthread+0x711/0x8a0
 ret_from_fork+0x3fc/0x770
 ret_from_fork_asm+0x1a/0x30
 </TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:mld_clear_delrec+0x34a/0x5d0
Code: ff ff ff e8 58 40 41 01 89 c5 31 ff 89 c6 e8 fd 14 94 f7 85 ed 74 40 e8 b4 10 94 f7 eb 05 e8 ad 10 94 f7 4c 89 f8 48 c1 e8 03 <42> 80 3c 28 00 74 08 4c 89 ff e8 a7 24 f6 f7 4d 8b 27 49 8d 7f 30
RSP: 0018:ffffc90000107450 EFLAGS: 00010206
RAX: 000000001fffe000 RBX: ffff88803ec53538 RCX: ffff88801c690000
RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000000000000000
RBP: 0000000000000001 R08: ffffffff8fa1d5f7 R09: 1ffffffff1f43abe
R10: dffffc0000000000 R11: fffffbfff1f43abf R12: ffff888034f3f028
R13: dffffc0000000000 R14: ffff888034f3f000 R15: 00000000ffff0000
FS:  0000000000000000(0000) GS:ffff8880b8626000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fc5e21a7ba8 CR3: 000000011d90a000 CR4: 00000000000006f0
