skbuff: skb_under_panic: text:ffffffff8a94ab18 len:96 put:20 head:ffff888056ba5000 data:ffff888056ba4ffc tail:0x5c end:0x6c0 dev:bond0 ------------[ cut here ]------------ kernel BUG at net/core/skbuff.c:214! Oops: invalid opcode: 0000 [#1] SMP KASAN PTI CPU: 0 UID: 0 PID: 150 Comm: kworker/u8:6 Not tainted syzkaller #0 PREEMPT(full) Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2026 Workqueue: bond0 bond_resend_igmp_join_requests_delayed RIP: 0010:skb_panic+0x157/0x160 net/core/skbuff.c:214 Code: c7 60 69 dc 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 ee 54 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:ffffc90002fe74c0 EFLAGS: 00010286 RAX: 0000000000000086 RBX: dffffc0000000000 RCX: 41c9887975fdc500 RDX: 0000000000000000 RSI: 0000000080000000 RDI: 0000000000000000 RBP: 00000000000006c0 R08: ffffc90002fe7227 R09: 1ffff920005fce44 R10: dffffc0000000000 R11: fffff520005fce45 R12: ffff88801ebf6150 R13: ffff888056ba5000 R14: ffff888056ba4ffc R15: 000000000000005c FS: 0000000000000000(0000) GS:ffff888125465000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f25361f5ff8 CR3: 00000000770b6000 CR4: 00000000003526f0 Call Trace: skb_under_panic net/core/skbuff.c:224 [inline] skb_push+0xc3/0xe0 net/core/skbuff.c:2663 nr_header+0x38/0x370 net/netrom/nr_dev.c:69 dev_hard_header include/linux/netdevice.h:3439 [inline] neigh_connected_output+0x286/0x460 net/core/neighbour.c:1643 NF_HOOK_COND include/linux/netfilter.h:307 [inline] ip6_output+0x340/0x550 net/ipv6/ip6_output.c:246 dst_output include/net/dst.h:470 [inline] NF_HOOK+0x177/0x4f0 include/linux/netfilter.h:318 mld_sendpack+0x8b4/0xe40 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+0x1be/0x400 kernel/notifier.c:85 call_netdevice_notifiers_extack net/core/dev.c:2287 [inline] call_netdevice_notifiers+0x90/0xd0 net/core/dev.c:2301 bond_resend_igmp_join_requests_delayed+0x61/0x170 drivers/net/bonding/bond_main.c:901 process_one_work kernel/workqueue.c:3275 [inline] process_scheduled_works+0xb02/0x1830 kernel/workqueue.c:3358 worker_thread+0xa50/0xfc0 kernel/workqueue.c:3439 kthread+0x388/0x470 kernel/kthread.c:436 ret_from_fork+0x51e/0xb90 arch/x86/kernel/process.c:158 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245 Modules linked in: ---[ end trace 0000000000000000 ]--- RIP: 0010:skb_panic+0x157/0x160 net/core/skbuff.c:214 Code: c7 60 69 dc 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 ee 54 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:ffffc90002fe74c0 EFLAGS: 00010286 RAX: 0000000000000086 RBX: dffffc0000000000 RCX: 41c9887975fdc500 RDX: 0000000000000000 RSI: 0000000080000000 RDI: 0000000000000000 RBP: 00000000000006c0 R08: ffffc90002fe7227 R09: 1ffff920005fce44 R10: dffffc0000000000 R11: fffff520005fce45 R12: ffff88801ebf6150 R13: ffff888056ba5000 R14: ffff888056ba4ffc R15: 000000000000005c FS: 0000000000000000(0000) GS:ffff888125465000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000055627d0bd950 CR3: 000000007dcf6000 CR4: 00000000003526f0