skbuff: skb_under_panic: text:ffffffff8a3c2db0 len:116 put:40 head:ffff8880217bf000 data:ffff8880217befe8 tail:0x5c end:0x6c0 dev:bond1
------------[ cut here ]------------
kernel BUG at net/core/skbuff.c:213!
Oops: invalid opcode: 0000 [#1] SMP KASAN NOPTI
CPU: 3 UID: 0 PID: 6006 Comm: kworker/3:3 Tainted: G             L      syzkaller #0 PREEMPT(full) 
Tainted: [L]=SOFTLOCKUP
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:skb_panic+0x157/0x1d0 net/core/skbuff.c:213
Code: b6 04 01 84 c0 74 04 3c 03 7e 21 41 56 8b 4b 70 45 89 e8 48 c7 c7 60 58 c2 8c 41 57 56 48 89 ee 52 4c 89 e2 e8 3a 08 5f f8 90 <0f> 0b 4c 89 4c 24 10 48 89 54 24 08 48 89 34 24 e8 04 3f eb f8 4c
RSP: 0018:ffffc90003eaf680 EFLAGS: 00010286
RAX: 0000000000000087 RBX: ffff88805efbe000 RCX: ffffffff819c8d55
RDX: 0000000000000000 RSI: ffffffff819d0939 RDI: 0000000000000005
RBP: ffffffff8cc26b60 R08: 0000000000000005 R09: 0000000000000000
R10: 0000000080000000 R11: ffff88802e99d4b0 R12: ffffffff8a3c2db0
R13: 0000000000000028 R14: ffff8880123cc120 R15: 00000000000006c0
FS:  0000000000000000(0000) GS:ffff8880d6c09000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007efd3c573460 CR3: 0000000052f37000 CR4: 0000000000352ef0
Call Trace:
 <TASK>
 skb_under_panic net/core/skbuff.c:223 [inline]
 skb_push+0xca/0xf0 net/core/skbuff.c:2641
 ip6gre_header+0xc0/0x8d0 net/ipv6/ip6_gre.c:1371
 dev_hard_header include/linux/netdevice.h:3436 [inline]
 neigh_connected_output+0x366/0x620 net/core/neighbour.c:1618
 neigh_output include/net/neighbour.h:556 [inline]
 ip6_finish_output2+0xad1/0x1cf0 net/ipv6/ip6_output.c:136
 __ip6_finish_output+0x3cd/0x1010 net/ipv6/ip6_output.c:209
 ip6_finish_output net/ipv6/ip6_output.c:220 [inline]
 NF_HOOK_COND include/linux/netfilter.h:307 [inline]
 ip6_output+0x253/0x710 net/ipv6/ip6_output.c:247
 dst_output+0xa8/0x4b0 include/net/dst.h:464
 NF_HOOK include/linux/netfilter.h:318 [inline]
 NF_HOOK include/linux/netfilter.h:312 [inline]
 mld_sendpack+0xa30/0xed0 net/ipv6/mcast.c:1855
 mld_send_cr net/ipv6/mcast.c:2154 [inline]
 mld_ifc_work+0x740/0xbf0 net/ipv6/mcast.c:2693
 process_one_work+0x9ba/0x1b20 kernel/workqueue.c:3257
 process_scheduled_works kernel/workqueue.c:3340 [inline]
 worker_thread+0x6c8/0xf10 kernel/workqueue.c:3421
 kthread+0x3c5/0x780 kernel/kthread.c:463
 ret_from_fork+0x983/0xb10 arch/x86/kernel/process.c:158
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:246
 </TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:skb_panic+0x157/0x1d0 net/core/skbuff.c:213
Code: b6 04 01 84 c0 74 04 3c 03 7e 21 41 56 8b 4b 70 45 89 e8 48 c7 c7 60 58 c2 8c 41 57 56 48 89 ee 52 4c 89 e2 e8 3a 08 5f f8 90 <0f> 0b 4c 89 4c 24 10 48 89 54 24 08 48 89 34 24 e8 04 3f eb f8 4c
RSP: 0018:ffffc90003eaf680 EFLAGS: 00010286
RAX: 0000000000000087 RBX: ffff88805efbe000 RCX: ffffffff819c8d55
RDX: 0000000000000000 RSI: ffffffff819d0939 RDI: 0000000000000005
RBP: ffffffff8cc26b60 R08: 0000000000000005 R09: 0000000000000000
R10: 0000000080000000 R11: ffff88802e99d4b0 R12: ffffffff8a3c2db0
R13: 0000000000000028 R14: ffff8880123cc120 R15: 00000000000006c0
FS:  0000000000000000(0000) GS:ffff8880d6c09000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007efd3c573460 CR3: 000000002dbe4000 CR4: 0000000000352ef0