skbuff: skb_over_panic: text:ffffffff83c70dd3 len:76 put:20 head:ffff8881c77c1c00 data:ffff8881c77c1c40 tail:0x8c end:0x80 dev:ip6gre2
------------[ cut here ]------------
kernel BUG at net/core/skbuff.c:109!
invalid opcode: 0000 [#1] PREEMPT SMP KASAN
CPU: 1 PID: 22866 Comm: kworker/1:3 Not tainted 5.4.225-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/21/2023
Workqueue: ipv6_addrconf addrconf_dad_work
RIP: 0010:skb_panic net/core/skbuff.c:105 [inline]
RIP: 0010:skb_over_panic+0x143/0x150 net/core/skbuff.c:114
Code: c8 02 85 48 c7 c6 20 7d 3d 85 48 8b 54 24 08 8b 0c 24 44 8b 44 24 04 4d 89 e9 55 41 54 41 57 41 56 e8 09 61 d0 00 48 83 c4 20 <0f> 0b 66 66 2e 0f 1f 84 00 00 00 00 00 55 41 57 41 56 41 55 41 54
RSP: 0018:ffff8881aa667918 EFLAGS: 00010286
RAX: 0000000000000086 RBX: dffffc0000000000 RCX: 5249a1d8a83a1a00
RDX: 0000000000000000 RSI: 0000000000000402 RDI: 0000000000000000
RBP: ffff8881eb2f6000 R08: ffffffff814ca206 R09: ffffed103edeaa08
R10: 0000000000000000 R11: dffffc0000000001 R12: 0000000000000080
R13: ffff8881c77c1c00 R14: ffff8881c77c1c40 R15: 000000000000008c
FS:  0000000000000000(0000) GS:ffff8881f6f00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000000000002 CR3: 00000001e919c000 CR4: 00000000003406e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 skb_put+0x146/0x1f0 net/core/skbuff.c:1885
 add_grhead net/ipv6/mcast.c:1714 [inline]
 add_grec+0xee3/0x12f0 net/ipv6/mcast.c:1841
 mld_send_initial_cr+0x1e4/0x2b0 net/ipv6/mcast.c:2091
 ipv6_mc_dad_complete+0x70/0x3a0 net/ipv6/mcast.c:2103
 addrconf_dad_completed+0x73f/0xe30 net/ipv6/addrconf.c:4231
 addrconf_dad_work+0xe4d/0x16f0 net/ipv6/addrconf.c:4016
 process_one_work+0x765/0xd20 kernel/workqueue.c:2287
 worker_thread+0xaef/0x1470 kernel/workqueue.c:2433
 kthread+0x2da/0x360 kernel/kthread.c:288
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:354
Modules linked in:
---[ end trace 0986e7f69cf136ad ]---
RIP: 0010:skb_panic net/core/skbuff.c:105 [inline]
RIP: 0010:skb_over_panic+0x143/0x150 net/core/skbuff.c:114
Code: c8 02 85 48 c7 c6 20 7d 3d 85 48 8b 54 24 08 8b 0c 24 44 8b 44 24 04 4d 89 e9 55 41 54 41 57 41 56 e8 09 61 d0 00 48 83 c4 20 <0f> 0b 66 66 2e 0f 1f 84 00 00 00 00 00 55 41 57 41 56 41 55 41 54
RSP: 0018:ffff8881aa667918 EFLAGS: 00010286
RAX: 0000000000000086 RBX: dffffc0000000000 RCX: 5249a1d8a83a1a00
RDX: 0000000000000000 RSI: 0000000000000402 RDI: 0000000000000000
RBP: ffff8881eb2f6000 R08: ffffffff814ca206 R09: ffffed103edeaa08
R10: 0000000000000000 R11: dffffc0000000001 R12: 0000000000000080
R13: ffff8881c77c1c00 R14: ffff8881c77c1c40 R15: 000000000000008c
FS:  0000000000000000(0000) GS:ffff8881f6f00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000000000002 CR3: 00000001e919c000 CR4: 00000000003406e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400