------------[ cut here ]------------
WARNING: CPU: 1 PID: 10410 at mm/maccess.c:226 copy_from_user_nofault+0x160/0x1c0 mm/maccess.c:226
Modules linked in:
CPU: 1 PID: 10410 Comm: syz.0.1162 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/18/2025
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:ffffc90000dcfc50 EFLAGS: 00010246
RAX: ffffffff819ed760 RBX: 0000000000000008 RCX: ffff88801db85940
RDX: 0000000000000100 RSI: 0000000000000000 RDI: 0000000000000000
RBP: 0000000000000000 R08: dffffc0000000000 R09: ffffed1003b70b29
R10: ffffed1003b70b29 R11: 1ffff11003b70b28 R12: ffff88801db870c8
R13: 00007ffffffff000 R14: ffffc90000dcfcc8 R15: 0000000020000000
FS:  00007f809a6796c0(0000) GS:ffff8880b9100000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000020000000 CR3: 0000000021ce5000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
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_072925ff7d49e3a5+0x40/0x730
 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_fib_table_lookup+0x175/0x1d0 include/trace/events/fib.h:13
 fib_table_lookup+0x10f1/0x15e0 net/ipv4/fib_trie.c:-1
 fib4_rule_action+0x1cf/0x2f0 net/ipv4/fib_rules.c:135
 fib_rules_lookup+0x5ab/0xaf0 net/core/fib_rules.c:318
 __fib_lookup+0xf6/0x200 net/ipv4/fib_rules.c:92
 __fib_validate_source net/ipv4/fib_frontend.c:377 [inline]
 fib_validate_source+0x590/0x1240 net/ipv4/fib_frontend.c:447
 ip_mc_validate_source net/ipv4/route.c:1734 [inline]
 ip_route_input_mc net/ipv4/route.c:1753 [inline]
 ip_route_input_rcu+0x1149/0x3100 net/ipv4/route.c:2523
 ip_route_input_noref+0x147/0x230 net/ipv4/route.c:2474
 ip_rcv_finish_core+0x5a6/0x1bc0 net/ipv4/ip_input.c:363
 ip_list_rcv_finish net/ipv4/ip_input.c:610 [inline]
 ip_sublist_rcv+0x3c5/0xce0 net/ipv4/ip_input.c:636
 ip_list_rcv+0x3df/0x430 net/ipv4/ip_input.c:671
 __netif_receive_skb_list_ptype net/core/dev.c:5568 [inline]
 __netif_receive_skb_list_core+0x574/0x740 net/core/dev.c:5616
 __netif_receive_skb_list net/core/dev.c:5668 [inline]
 netif_receive_skb_list_internal+0x871/0xb90 net/core/dev.c:5759
 gro_normal_list net/core/dev.c:5913 [inline]
 napi_complete_done+0x37d/0x830 net/core/dev.c:6651
 gro_cell_poll+0x197/0x1c0 net/core/gro_cells.c:65
 __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]
 ip_finish_output2+0xd32/0x1080 net/ipv4/ip_output.c:229
 dst_output include/net/dst.h:452 [inline]
 ip_local_out net/ipv4/ip_output.c:126 [inline]
 ip_send_skb+0x129/0x1c0 net/ipv4/ip_output.c:1581
 udp_send_skb+0x94a/0x1330 net/ipv4/udp.c:991
 udp_sendmsg+0x1aaa/0x2340 net/ipv4/udp.c:1279
 udpv6_sendmsg+0x92f/0x2320 net/ipv6/udp.c:1395
 sock_sendmsg_nosec net/socket.c:704 [inline]
 __sock_sendmsg net/socket.c:716 [inline]
 ____sys_sendmsg+0x5a2/0x8c0 net/socket.c:2436
 ___sys_sendmsg+0x1f0/0x260 net/socket.c:2490
 __sys_sendmmsg+0x27c/0x4a0 net/socket.c:2576
 __do_sys_sendmmsg net/socket.c:2605 [inline]
 __se_sys_sendmmsg net/socket.c:2602 [inline]
 __x64_sys_sendmmsg+0x9c/0xb0 net/socket.c:2602
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x66/0xd0
RIP: 0033:0x7f809c411ec9
Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 a8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f809a679038 EFLAGS: 00000246 ORIG_RAX: 0000000000000133
RAX: ffffffffffffffda RBX: 00007f809c668fa0 RCX: 00007f809c411ec9
RDX: 0000000000000001 RSI: 00002000000018c0 RDI: 0000000000000007
RBP: 00007f809c494f91 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000004880 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f809c669038 R14: 00007f809c668fa0 R15: 00007ffc6a04b408
 </TASK>