skbuff: skb_over_panic: text:ffffffff843b658e len:76 put:20 head:ffff888112943800 data:ffff888112943840 tail:0x8c end:0x80 dev:ip6gre2
------------[ cut here ]------------
kernel BUG at net/core/skbuff.c:110!
invalid opcode: 0000 [#1] PREEMPT SMP KASAN
CPU: 0 PID: 39 Comm: kworker/0:1 Not tainted 5.10.76-syzkaller-01178-g4944ec82ebb9 #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 syzkaller/managers/android-5-10/kernel/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 3c 5d 89 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:ffffc900001ff880 EFLAGS: 00010282
RAX: 0000000000000086 RBX: ffff88816da44000 RCX: f9fadcc7b19c5800
RDX: 0000000000000000 RSI: 0000000000000402 RDI: 0000000000000000
RBP: ffffc900001ff8c8 R08: ffffffff81545288 R09: ffffed103ee095d8
R10: ffffed103ee095d8 R11: 0000000000000000 R12: ffff888112943840
R13: 000000000000008c R14: 0000000000000080 R15: dffffc0000000000
FS:  0000000000000000(0000) GS:ffff8881f7000000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fa7121f0000 CR3: 00000001738d8000 CR4: 00000000003526b0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000600
Call Trace:
 skb_over_panic+0x2c/0x30 syzkaller/managers/android-5-10/kernel/net/core/skbuff.c:115
 skb_put+0x205/0x210 syzkaller/managers/android-5-10/kernel/net/core/skbuff.c:1877
 add_grhead syzkaller/managers/android-5-10/kernel/net/ipv6/mcast.c:1711 [inline]
 add_grec+0xf5e/0x1370 syzkaller/managers/android-5-10/kernel/net/ipv6/mcast.c:1838
 mld_send_initial_cr+0x1f8/0x2c0 syzkaller/managers/android-5-10/kernel/net/ipv6/mcast.c:2088
 ipv6_mc_dad_complete+0x70/0x3b0 syzkaller/managers/android-5-10/kernel/net/ipv6/mcast.c:2100
 addrconf_dad_completed+0x664/0xdc0 syzkaller/managers/android-5-10/kernel/net/ipv6/addrconf.c:4201
 addrconf_dad_work+0xe4b/0x1d40 syzkaller/managers/android-5-10/kernel/net/ipv6/addrconf.c:3986
 process_one_work+0x6b4/0xfb0 syzkaller/managers/android-5-10/kernel/kernel/workqueue.c:2289
 worker_thread+0xb15/0x1600 syzkaller/managers/android-5-10/kernel/kernel/workqueue.c:2435
 kthread+0x371/0x390 syzkaller/managers/android-5-10/kernel/kernel/kthread.c:313
 ret_from_fork+0x1f/0x30 syzkaller/managers/android-5-10/kernel/arch/x86/entry/entry_64.S:296
Modules linked in:
---[ end trace 98d43a6f48db1ef7 ]---
RIP: 0010:skb_panic+0x14f/0x160 syzkaller/managers/android-5-10/kernel/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 3c 5d 89 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:ffffc900001ff880 EFLAGS: 00010282
RAX: 0000000000000086 RBX: ffff88816da44000 RCX: f9fadcc7b19c5800
RDX: 0000000000000000 RSI: 0000000000000402 RDI: 0000000000000000
RBP: ffffc900001ff8c8 R08: ffffffff81545288 R09: ffffed103ee095d8
R10: ffffed103ee095d8 R11: 0000000000000000 R12: ffff888112943840
R13: 000000000000008c R14: 0000000000000080 R15: dffffc0000000000
FS:  0000000000000000(0000) GS:ffff8881f7000000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fa7121f0000 CR3: 00000001738d8000 CR4: 00000000003526b0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000600