skbuff: skb_under_panic: text:ffffffff89db9007 len:-1826254128 put:-1826254204 head:ffff88807f503000 data:ffff887fec2a9e3c tail:0x10c end:0x6c0 dev:bond2
------------[ cut here ]------------
kernel BUG at net/core/skbuff.c:213!
Oops: invalid opcode: 0000 [#1] SMP KASAN PTI
CPU: 0 UID: 0 PID: 12 Comm: kworker/u8:0 Not tainted syzkaller #0 PREEMPT(full) 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025
Workqueue: bond2 bond_resend_igmp_join_requests_delayed
RIP: 0010:skb_panic+0x157/0x160 net/core/skbuff.c:213
Code: c7 20 2f 6e 8c 48 8b 74 24 08 48 8b 54 24 10 8b 0c 24 44 8b 44 24 04 4d 89 e9 50 55 41 57 41 56 e8 1e 95 f5 ff 48 83 c4 20 90 <0f> 0b cc cc cc cc cc cc cc 90 90 90 90 90 90 90 90 90 90 90 90 90
RSP: 0018:ffffc900001172b8 EFLAGS: 00010286
RAX: 0000000000000099 RBX: dffffc0000000000 RCX: 72ba1233d947a000
RDX: 0000000000000000 RSI: 0000000080000000 RDI: 0000000000000000
RBP: 00000000000006c0 R08: ffffc90000116fc7 R09: 1ffff92000022df8
R10: dffffc0000000000 R11: fffff52000022df9 R12: ffff88807b7dfb50
R13: ffff88807f503000 R14: ffff887fec2a9e3c R15: 000000000000010c
FS:  0000000000000000(0000) GS:ffff8881260b1000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000200000006580 CR3: 0000000075786000 CR4: 00000000003526f0
Call Trace:
 <TASK>
 skb_under_panic net/core/skbuff.c:223 [inline]
 skb_push+0xc3/0xe0 net/core/skbuff.c:2641
 ipgre_header+0x67/0x290 net/ipv4/ip_gre.c:895
 dev_hard_header include/linux/netdevice.h:3435 [inline]
 neigh_connected_output+0x286/0x460 net/core/neighbour.c:1618
 neigh_output include/net/neighbour.h:556 [inline]
 ip6_finish_output2+0xfb3/0x1480 net/ipv6/ip6_output.c:136
 NF_HOOK_COND include/linux/netfilter.h:307 [inline]
 ip6_output+0x340/0x550 net/ipv6/ip6_output.c:247
 NF_HOOK+0x9e/0x380 include/linux/netfilter.h:318
 mld_sendpack+0x8d4/0xe60 net/ipv6/mcast.c:1855
 ipv6_mc_rejoin_groups net/ipv6/mcast.c:2868 [inline]
 ipv6_mc_netdev_event+0x1b7/0x5a0 net/ipv6/mcast.c:2883
 notifier_call_chain+0x19d/0x3a0 kernel/notifier.c:85
 call_netdevice_notifiers_extack net/core/dev.c:2268 [inline]
 call_netdevice_notifiers+0x88/0xc0 net/core/dev.c:2282
 bond_resend_igmp_join_requests_delayed+0x61/0x170 drivers/net/bonding/bond_main.c:893
 process_one_work kernel/workqueue.c:3257 [inline]
 process_scheduled_works+0xad1/0x1770 kernel/workqueue.c:3340
 worker_thread+0x8a0/0xda0 kernel/workqueue.c:3421
 kthread+0x711/0x8a0 kernel/kthread.c:463
 ret_from_fork+0x599/0xb30 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+0x157/0x160 net/core/skbuff.c:213
Code: c7 20 2f 6e 8c 48 8b 74 24 08 48 8b 54 24 10 8b 0c 24 44 8b 44 24 04 4d 89 e9 50 55 41 57 41 56 e8 1e 95 f5 ff 48 83 c4 20 90 <0f> 0b cc cc cc cc cc cc cc 90 90 90 90 90 90 90 90 90 90 90 90 90
RSP: 0018:ffffc900001172b8 EFLAGS: 00010286
RAX: 0000000000000099 RBX: dffffc0000000000 RCX: 72ba1233d947a000
RDX: 0000000000000000 RSI: 0000000080000000 RDI: 0000000000000000
RBP: 00000000000006c0 R08: ffffc90000116fc7 R09: 1ffff92000022df8
R10: dffffc0000000000 R11: fffff52000022df9 R12: ffff88807b7dfb50
R13: ffff88807f503000 R14: ffff887fec2a9e3c R15: 000000000000010c
FS:  0000000000000000(0000) GS:ffff8881260b1000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000200000006580 CR3: 000000007504e000 CR4: 00000000003526f0