------------[ cut here ]------------
WARNING: CPU: 1 PID: 21 at mm/maccess.c:226 copy_from_user_nofault+0x160/0x1c0 mm/maccess.c:226
Modules linked in:
CPU: 1 PID: 21 Comm: kworker/1:0 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:copy_from_user_nofault+0x160/0x1c0 mm/maccess.c:226
Code: 24 45 31 f6 31 ff 89 de e8 3d f7 d8 ff 85 db 48 c7 c0 f2 ff ff ff 49 0f 44 c6 5b 41 5c 41 5d 41 5e 41 5f 5d c3 e8 c0 f3 d8 ff <0f> 0b e9 1c ff ff ff 44 89 e1 80 e1 07 80 c1 03 38 c1 0f 8c ea fe
RSP: 0018:ffffc90000dcf898 EFLAGS: 00010246
RAX: ffffffff819ed760 RBX: 0000000000000000 RCX: ffff88813fe71dc0
RDX: 0000000000000100 RSI: 0000000000000000 RDI: 0000000000000000
RBP: 0000000000000000 R08: dffffc0000000000 R09: ffffed1027fce3b9
R10: ffffed1027fce3b9 R11: 1ffff11027fce3b8 R12: ffff88813fe73548
R13: 00007ffffffff000 R14: ffffc90000dcf908 R15: 000000007fffffe8
FS:  0000000000000000(0000) GS:ffff8880b9100000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000000110c30e45c CR3: 000000001ea68000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000600
Call Trace:
 <IRQ>
 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+0xdd/0x170 kernel/trace/bpf_trace.c:277
 bpf_prog_4595f2d530cd9aa3+0x35/0x9e4
 bpf_dispatcher_nop_func include/linux/bpf.h:888 [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_run4+0x188/0x330 kernel/trace/bpf_trace.c:1917
 trace_fib6_table_lookup+0x159/0x1b0 include/trace/events/fib6.h:13
 fib6_table_lookup+0xa20/0xa70 net/ipv6/route.c:2196
 ip6_pol_route+0x209/0x1290 net/ipv6/route.c:2219
 pol_lookup_func include/net/ip6_fib.h:582 [inline]
 fib6_rule_lookup+0x1d3/0x570 net/ipv6/fib6_rules.c:115
 ip6_route_input_lookup net/ipv6/route.c:2289 [inline]
 ip6_route_input+0x6bf/0xa40 net/ipv6/route.c:2585
 ip6_rcv_finish+0x136/0x240 net/ipv6/ip6_input.c:77
 ip_sabotage_in+0x1e6/0x290 net/bridge/br_netfilter_hooks.c:979
 nf_hook_entry_hookfn include/linux/netfilter.h:142 [inline]
 nf_hook_slow+0xb9/0x200 net/netfilter/core.c:584
 nf_hook include/linux/netfilter.h:257 [inline]
 NF_HOOK+0x1cb/0x360 include/linux/netfilter.h:300
 __netif_receive_skb_one_core net/core/dev.c:5525 [inline]
 __netif_receive_skb+0xcc/0x290 net/core/dev.c:5639
 netif_receive_skb_internal net/core/dev.c:5725 [inline]
 netif_receive_skb+0x19e/0x6c0 net/core/dev.c:5784
 NF_HOOK+0x97/0x340 include/linux/netfilter.h:302
 br_handle_frame_finish+0x1035/0x12c0 net/bridge/br_input.c:186
 br_nf_hook_thresh+0x3b2/0x480 net/bridge/br_netfilter_hooks.c:1155
 br_nf_pre_routing_finish_ipv6+0x903/0xc80 net/bridge/br_netfilter_ipv6.c:-1
 NF_HOOK include/linux/netfilter.h:302 [inline]
 br_nf_pre_routing_ipv6+0x359/0x650 net/bridge/br_netfilter_ipv6.c:237
 nf_hook_entry_hookfn include/linux/netfilter.h:142 [inline]
 nf_hook_bridge_pre net/bridge/br_input.c:242 [inline]
 br_handle_frame+0x89b/0x1180 net/bridge/br_input.c:384
 __netif_receive_skb_core+0xfb0/0x35d0 net/core/dev.c:5419
 __netif_receive_skb_one_core net/core/dev.c:5523 [inline]
 __netif_receive_skb+0x74/0x290 net/core/dev.c:5639
 process_backlog+0x364/0x780 net/core/dev.c:6516
 __napi_poll+0xc0/0x430 net/core/dev.c:7075
 napi_poll net/core/dev.c:7142 [inline]
 net_rx_action+0x4a8/0x9c0 net/core/dev.c:7232
 handle_softirqs+0x328/0x820 kernel/softirq.c:576
 do_softirq+0x13b/0x200 kernel/softirq.c:477
 </IRQ>
 <TASK>
 __local_bh_enable_ip+0x174/0x1b0 kernel/softirq.c:401
 rcu_read_unlock_bh include/linux/rcupdate.h:809 [inline]
 ip6_finish_output2+0x110b/0x1500 net/ipv6/ip6_output.c:131
 dst_output include/net/dst.h:452 [inline]
 NF_HOOK+0x15f/0x430 include/linux/netfilter.h:302
 mld_sendpack+0x713/0xc30 net/ipv6/mcast.c:1825
 mld_send_cr net/ipv6/mcast.c:2126 [inline]
 mld_ifc_work+0x836/0xb40 net/ipv6/mcast.c:2658
 process_one_work+0x863/0x1000 kernel/workqueue.c:2310
 worker_thread+0xaa8/0x12a0 kernel/workqueue.c:2457
 kthread+0x436/0x520 kernel/kthread.c:334
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:287
 </TASK>