------------[ cut here ]------------ WARNING: CPU: 0 PID: 4216 at mm/maccess.c:226 copy_from_user_nofault+0x15c/0x1c0 Modules linked in: CPU: 0 PID: 4216 Comm: kworker/0:5 Not tainted 5.15.173-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/30/2024 Workqueue: mld mld_dad_work RIP: 0010:copy_from_user_nofault+0x15c/0x1c0 mm/maccess.c:226 Code: db 48 c7 c0 f2 ff ff ff 48 0f 44 c5 eb 0c e8 cb c6 d5 ff 48 c7 c0 f2 ff ff ff 5b 41 5c 41 5d 41 5e 41 5f 5d c3 e8 b4 c6 d5 ff <0f> 0b e9 1e ff ff ff 89 d9 80 e1 07 80 c1 03 38 c1 0f 8c ef fe ff RSP: 0018:ffffc90000007770 EFLAGS: 00010246 RAX: ffffffff81aaacec RBX: 0000000000000000 RCX: ffff8880772ad940 RDX: 0000000000000100 RSI: 0000000000000000 RDI: 0000000000000000 RBP: dffffc0000000000 R08: ffffffff81aaabfd R09: ffffed100ee55b29 R10: 0000000000000000 R11: dffffc0000000001 R12: 0000000000000000 R13: 0000000000000008 R14: 0000000000000000 R15: ffffc900000077e8 FS: 0000000000000000(0000) GS:ffff8880b9000000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000001b30819ff8 CR3: 0000000061899000 CR4: 00000000003506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: bpf_probe_read_user_common kernel/trace/bpf_trace.c:157 [inline] ____bpf_probe_read_compat kernel/trace/bpf_trace.c:281 [inline] bpf_probe_read_compat+0xe4/0x180 kernel/trace/bpf_trace.c:277 bpf_prog_dafeb42eb5660805+0x5e/0x244 bpf_dispatcher_nop_func include/linux/bpf.h:790 [inline] __bpf_prog_run include/linux/filter.h:628 [inline] bpf_prog_run include/linux/filter.h:635 [inline] __bpf_trace_run kernel/trace/bpf_trace.c:1878 [inline] bpf_trace_run3+0x1d1/0x380 kernel/trace/bpf_trace.c:1916 __bpf_trace_kmem_cache_free+0x99/0xc0 include/trace/events/kmem.h:138 __traceiter_kmem_cache_free+0x2e/0x50 include/trace/events/kmem.h:138 trace_kmem_cache_free include/trace/events/kmem.h:138 [inline] kmem_cache_free+0x1ce/0x1f0 mm/slub.c:3516 ip6_rcv_core+0xcdf/0x15d0 ipv6_rcv+0x68/0xb0 net/ipv6/ip6_input.c:297 __netif_receive_skb_one_core net/core/dev.c:5493 [inline] __netif_receive_skb+0x1c6/0x530 net/core/dev.c:5607 process_backlog+0x363/0x7f0 net/core/dev.c:6484 __napi_poll+0xc7/0x440 net/core/dev.c:7043 napi_poll net/core/dev.c:7110 [inline] net_rx_action+0x617/0xda0 net/core/dev.c:7200 handle_softirqs+0x3a7/0x930 kernel/softirq.c:558 do_softirq+0x162/0x240 kernel/softirq.c:459 __local_bh_enable_ip+0x1b1/0x1f0 kernel/softirq.c:383 rcu_read_unlock_bh include/linux/rcupdate.h:809 [inline] ip6_finish_output2+0x103e/0x15a0 net/ipv6/ip6_output.c:131 dst_output include/net/dst.h:443 [inline] NF_HOOK+0x166/0x4f0 include/linux/netfilter.h:302 mld_sendpack+0x70e/0xc10 net/ipv6/mcast.c:1820 mld_dad_work+0x40/0x400 net/ipv6/mcast.c:2262 process_one_work+0x8a1/0x10c0 kernel/workqueue.c:2310 worker_thread+0xaca/0x1280 kernel/workqueue.c:2457 kthread+0x3f6/0x4f0 kernel/kthread.c:334 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:287