skbuff: skb_over_panic: text:ffffffff843292a3 len:76 put:20 head:ffff8881109b7000 data:ffff8881109b7040 tail:0x8c end:0x80 dev:syztnl2
------------[ cut here ]------------
kernel BUG at net/core/skbuff.c:110!
invalid opcode: 0000 [#1] PREEMPT SMP KASAN
CPU: 0 PID: 16991 Comm: kworker/0:81 Tainted: G        W         5.10.149-syzkaller-01350-g0118fb827bc7 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/26/2022
Workqueue: ipv6_addrconf addrconf_dad_work
RIP: 0010:skb_panic+0x14c/0x150 net/core/skbuff.c:106
Code: c7 00 2d 79 85 48 8b 75 c0 48 8b 55 b8 8b 4d d4 44 8b 45 d0 4c 8b 4d c8 31 c0 53 41 56 41 55 41 54 e8 35 06 d1 00 48 83 c4 20 <0f> 0b 66 90 55 48 89 e5 41 57 41 56 41 55 41 54 53 48 83 ec 78 4c
RSP: 0018:ffffc900052278d0 EFLAGS: 00010282
RAX: 0000000000000086 RBX: ffff888160742000 RCX: 1c1f7c1fe1b1a300
RDX: 0000000000000000 RSI: 0000000000000402 RDI: 0000000000000000
RBP: ffffc90005227918 R08: ffffffff8153d2f8 R09: ffffed103ee0a5e8
R10: ffffed103ee0a5e8 R11: 1ffff1103ee0a5e7 R12: ffff8881109b7040
R13: 000000000000008c R14: 0000000000000080 R15: dffffc0000000000
FS:  0000000000000000(0000) GS:ffff8881f7000000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f77a4e89718 CR3: 00000001183e6000 CR4: 00000000003506b0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 skb_over_panic net/core/skbuff.c:115 [inline]
 skb_put+0x153/0x210 net/core/skbuff.c:1877
 add_grhead net/ipv6/mcast.c:1711 [inline]
 add_grec+0xf73/0x13d0 net/ipv6/mcast.c:1838
 mld_send_initial_cr+0x1f8/0x2c0 net/ipv6/mcast.c:2088
 ipv6_mc_dad_complete+0x70/0x3b0 net/ipv6/mcast.c:2100
 addrconf_dad_completed+0x743/0xe30 net/ipv6/addrconf.c:4236
 addrconf_dad_work+0xd72/0x15d0 net/ipv6/addrconf.c:4020
 process_one_work+0x726/0xc10 kernel/workqueue.c:2296
 worker_thread+0xb27/0x1550 kernel/workqueue.c:2442
 kthread+0x349/0x3d0 kernel/kthread.c:313
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:299
Modules linked in:
---[ end trace 4a33eb44d4b82a25 ]---
RIP: 0010:skb_panic+0x14c/0x150 net/core/skbuff.c:106
Code: c7 00 2d 79 85 48 8b 75 c0 48 8b 55 b8 8b 4d d4 44 8b 45 d0 4c 8b 4d c8 31 c0 53 41 56 41 55 41 54 e8 35 06 d1 00 48 83 c4 20 <0f> 0b 66 90 55 48 89 e5 41 57 41 56 41 55 41 54 53 48 83 ec 78 4c
RSP: 0018:ffffc900052278d0 EFLAGS: 00010282
RAX: 0000000000000086 RBX: ffff888160742000 RCX: 1c1f7c1fe1b1a300
RDX: 0000000000000000 RSI: 0000000000000402 RDI: 0000000000000000
RBP: ffffc90005227918 R08: ffffffff8153d2f8 R09: ffffed103ee0a5e8
R10: ffffed103ee0a5e8 R11: 1ffff1103ee0a5e7 R12: ffff8881109b7040
R13: 000000000000008c R14: 0000000000000080 R15: dffffc0000000000
FS:  0000000000000000(0000) GS:ffff8881f7000000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f77a4e89718 CR3: 00000001183e6000 CR4: 00000000003506b0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400