CFI failure at __traceiter_kfree+0x34/0x50 include/trace/events/kmem.h:95 (target: tp_stub_func+0x0/0x10; expected type: 0x8682d211)
invalid opcode: 0000 [#1] PREEMPT SMP KASAN
CPU: 1 PID: 203 Comm: kworker/1:2 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/18/2025
Workqueue: mld mld_ifc_work
RIP: 0010:__traceiter_kfree+0x34/0x50 include/trace/events/kmem.h:95
Code: 8b 3d e0 6d ca 05 4d 85 ff 74 2e 48 89 d3 49 89 f6 49 8b 07 49 8b 7f 08 4c 89 f6 48 89 da 41 ba ef 2d 7d 79 44 03 50 fc 74 02 <0f> 0b ff d0 49 83 7f 18 00 4d 8d 7f 18 75 d8 31 c0 5b 41 5e 41 5f
RSP: 0018:ffffc900001b0950 EFLAGS: 00010213
RAX: ffffffff817125b0 RBX: ffff88812d881000 RCX: ffff888120ee6540
RDX: ffff88812d881000 RSI: ffffffff83e2aa6f RDI: ffffc900008db000
RBP: ffffc900001b0968 R08: dffffc0000000000 R09: ffffed102175106f
R10: 000000001ebd94fb R11: 1ffff1102175106e R12: ffff88810ba88360
R13: ffff88812d881688 R14: ffffffff83e2aa6f R15: ffff888122e64990
FS:  0000000000000000(0000) GS:ffff8881f7100000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f238fbb7dac CR3: 0000000122ee7000 CR4: 00000000003506a0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <IRQ>
 trace_kfree include/trace/events/kmem.h:95 [inline]
 kfree+0xc9/0xf0 mm/slab_common.c:977
 skb_free_head net/core/skbuff.c:765 [inline]
 skb_release_data+0x63f/0x890 net/core/skbuff.c:794
 skb_release_all net/core/skbuff.c:859 [inline]
 __kfree_skb net/core/skbuff.c:873 [inline]
 kfree_skb_reason+0xd4/0x230 net/core/skbuff.c:896
 kfree_skb include/linux/skbuff.h:1239 [inline]
 ip6_mc_input+0x518/0x690 net/ipv6/ip6_input.c:589
 dst_input include/net/dst.h:463 [inline]
 ip6_rcv_finish+0x19e/0x370 net/ipv6/ip6_input.c:79
 NF_HOOK include/linux/netfilter.h:305 [inline]
 ipv6_rcv+0xe9/0x210 net/ipv6/ip6_input.c:310
 __netif_receive_skb_one_core net/core/dev.c:5585 [inline]
 __netif_receive_skb+0xd7/0x2a0 net/core/dev.c:5699
 process_backlog+0x351/0x600 net/core/dev.c:6027
 __napi_poll+0xd0/0x5e0 net/core/dev.c:6594
 napi_poll net/core/dev.c:6661 [inline]
 net_rx_action+0x49b/0xaa0 net/core/dev.c:6775
 handle_softirqs+0x1d7/0x600 kernel/softirq.c:642
 __do_softirq+0xb/0xd kernel/softirq.c:680
 do_softirq+0xc6/0x120 kernel/softirq.c:524
 </IRQ>
 <TASK>
 __local_bh_enable_ip+0x75/0x80 kernel/softirq.c:448
 local_bh_enable include/linux/bottom_half.h:33 [inline]
 rcu_read_unlock_bh include/linux/rcupdate.h:870 [inline]
 __dev_queue_xmit+0x13fb/0x3420 net/core/dev.c:4372
 dev_queue_xmit include/linux/netdevice.h:3085 [inline]
 neigh_hh_output include/net/neighbour.h:536 [inline]
 neigh_output include/net/neighbour.h:550 [inline]
 ip6_finish_output2+0x15c0/0x1870 net/ipv6/ip6_output.c:138
 __ip6_finish_output net/ipv6/ip6_output.c:205 [inline]
 ip6_finish_output+0x5f9/0xbb0 net/ipv6/ip6_output.c:216
 NF_HOOK_COND include/linux/netfilter.h:294 [inline]
 ip6_output+0x1d1/0x3b0 net/ipv6/ip6_output.c:237
 dst_output include/net/dst.h:453 [inline]
 NF_HOOK include/linux/netfilter.h:305 [inline]
 mld_sendpack+0x7ab/0xd40 net/ipv6/mcast.c:1826
 mld_send_cr net/ipv6/mcast.c:2127 [inline]
 mld_ifc_work+0x80c/0xbe0 net/ipv6/mcast.c:2659
 process_one_work+0x71f/0xc40 kernel/workqueue.c:2302
 worker_thread+0xa29/0x11f0 kernel/workqueue.c:2449
 kthread+0x281/0x320 kernel/kthread.c:386
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:295
 </TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:__traceiter_kfree+0x34/0x50 include/trace/events/kmem.h:95
Code: 8b 3d e0 6d ca 05 4d 85 ff 74 2e 48 89 d3 49 89 f6 49 8b 07 49 8b 7f 08 4c 89 f6 48 89 da 41 ba ef 2d 7d 79 44 03 50 fc 74 02 <0f> 0b ff d0 49 83 7f 18 00 4d 8d 7f 18 75 d8 31 c0 5b 41 5e 41 5f
RSP: 0018:ffffc900001b0950 EFLAGS: 00010213
RAX: ffffffff817125b0 RBX: ffff88812d881000 RCX: ffff888120ee6540
RDX: ffff88812d881000 RSI: ffffffff83e2aa6f RDI: ffffc900008db000
RBP: ffffc900001b0968 R08: dffffc0000000000 R09: ffffed102175106f
R10: 000000001ebd94fb R11: 1ffff1102175106e R12: ffff88810ba88360
R13: ffff88812d881688 R14: ffffffff83e2aa6f R15: ffff888122e64990
FS:  0000000000000000(0000) GS:ffff8881f7100000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f238fbb7dac CR3: 0000000122ee7000 CR4: 00000000003506a0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400