skbuff: skb_over_panic: text:ffffffff84363776 len:40 put:40 head:ffff88814878b800 data:ffff88814878b890 tail:0xb8 end:0x80 dev:syztnl1
------------[ cut here ]------------
kernel BUG at net/core/skbuff.c:110!
invalid opcode: 0000 [#1] PREEMPT SMP KASAN
CPU: 0 PID: 24033 Comm: kworker/0:13 Tainted: G        W         5.10.106-syzkaller-00514-g5287773dba0d #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Workqueue: ipv6_addrconf addrconf_dad_work
RIP: 0010:skb_panic+0x14f/0x160 net/core/skbuff.c:106
Code: 87 85 48 8b 75 c0 48 8b 55 b8 8b 4d d4 44 8b 45 d0 4c 8b 4d c8 b8 00 00 00 00 53 41 56 41 55 41 54 e8 fc bf 8e fd 48 83 c4 20 <0f> 0b 66 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 55 48 89 e5 41
RSP: 0018:ffffc90000e1f750 EFLAGS: 00010286
RAX: 0000000000000086 RBX: ffff88811329e000 RCX: b0fd8a5172665800
RDX: 0000000000000000 RSI: 0000000080000402 RDI: 0000000000000000
RBP: ffffc90000e1f798 R08: ffffffff81544d28 R09: ffffed103ee0a5d8
R10: ffffed103ee0a5d8 R11: 0000000000000000 R12: ffff88814878b890
R13: 00000000000000b8 R14: 0000000000000080 R15: dffffc0000000000
FS:  0000000000000000(0000) GS:ffff8881f7000000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fb6eedbe058 CR3: 000000000640f000 CR4: 00000000003506b0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 skb_over_panic+0x2c/0x30 net/core/skbuff.c:115
 skb_put+0x205/0x210 net/core/skbuff.c:1877
 ip6_mc_hdr net/ipv6/mcast.c:1573 [inline]
 mld_newpack+0x406/0x9c0 net/ipv6/mcast.c:1621
 add_grhead net/ipv6/mcast.c:1707 [inline]
 add_grec+0xf40/0x1370 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+0x664/0xdc0 net/ipv6/addrconf.c:4221
 addrconf_dad_work+0xe4b/0x1d40 net/ipv6/addrconf.c:4006
 process_one_work+0x6b4/0xfb0 kernel/workqueue.c:2296
 worker_thread+0xb15/0x1600 kernel/workqueue.c:2442
 kthread+0x371/0x390 kernel/kthread.c:313
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:296
Modules linked in:
---[ end trace d41a781fccca59ba ]---
RIP: 0010:skb_panic+0x14f/0x160 net/core/skbuff.c:106
Code: 87 85 48 8b 75 c0 48 8b 55 b8 8b 4d d4 44 8b 45 d0 4c 8b 4d c8 b8 00 00 00 00 53 41 56 41 55 41 54 e8 fc bf 8e fd 48 83 c4 20 <0f> 0b 66 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 55 48 89 e5 41
RSP: 0018:ffffc90000e1f750 EFLAGS: 00010286
RAX: 0000000000000086 RBX: ffff88811329e000 RCX: b0fd8a5172665800
RDX: 0000000000000000 RSI: 0000000080000402 RDI: 0000000000000000
RBP: ffffc90000e1f798 R08: ffffffff81544d28 R09: ffffed103ee0a5d8
R10: ffffed103ee0a5d8 R11: 0000000000000000 R12: ffff88814878b890
R13: 00000000000000b8 R14: 0000000000000080 R15: dffffc0000000000
FS:  0000000000000000(0000) GS:ffff8881f7000000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fb6eedbe058 CR3: 000000000640f000 CR4: 00000000003506b0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400