------------[ cut here ]------------
WARNING: CPU: 1 PID: 3367 at mm/maccess.c:226 copy_from_user_nofault+0x160/0x1c0 mm/maccess.c:226
Modules linked in:
CPU: 1 PID: 3367 Comm: syz.9.10261 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/18/2026
RIP: 0010:copy_from_user_nofault+0x160/0x1c0 mm/maccess.c:226
Code: 24 45 31 f6 31 ff 89 de e8 5d 95 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 e0 91 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:ffffc90000dd0298 EFLAGS: 00010246
RAX: ffffffff81a0b710 RBX: 0000000000000008 RCX: ffff888020233b80
RDX: 0000000000000100 RSI: 0000000000000000 RDI: 0000000000000000
RBP: 0000000000000000 R08: ffffffff8f0ed048 R09: ffffffff8f0ed058
R10: ffffffff8f0ed050 R11: ffffffff8f0ed043 R12: ffff888020235308
R13: dffffc0000000000 R14: ffffc90000dd0300 R15: 0000000000000000
FS: 00007f50469c66c0(0000) GS:ffff8880b9100000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f362e456e9c CR3: 0000000068459000 CR4: 00000000003506e0
DR0: 0000200000000300 DR1: 0000200000000300 DR2: 0000000000000000
DR3: 0000200000000300 DR6: 00000000ffff0ff0 DR7: 0000000000000600
Call Trace:
bpf_probe_read_user_common kernel/trace/bpf_trace.c:157 [inline]
____bpf_probe_read_user kernel/trace/bpf_trace.c:166 [inline]
bpf_probe_read_user+0x26/0x70 kernel/trace/bpf_trace.c:163
bpf_prog_f6c3d2100ad96f09+0x3d/0xee4
bpf_dispatcher_nop_func include/linux/bpf.h:888 [inline]
__bpf_prog_run include/linux/filter.h:621 [inline]
bpf_prog_run include/linux/filter.h:635 [inline]
bpf_prog_run_pin_on_cpu include/linux/filter.h:652 [inline]
bpf_prog_run_clear_cb+0x108/0x1a0 include/linux/filter.h:806
run_filter+0x12a/0x220 net/packet/af_packet.c:2101
packet_rcv+0x388/0x1210 net/packet/af_packet.c:2174
dev_queue_xmit_nit+0xa69/0xb00 net/core/dev.c:2386
xmit_one net/core/dev.c:3657 [inline]
dev_hard_start_xmit+0x13e/0x7e0 net/core/dev.c:3678
sch_direct_xmit+0x25a/0x4b0 net/sched/sch_generic.c:345
__dev_xmit_skb net/core/dev.c:3897 [inline]
__dev_queue_xmit+0x179f/0x2f80 net/core/dev.c:4266
NF_HOOK+0x2fe/0x380 include/linux/netfilter.h:302
arp_xmit+0x142/0x230 net/ipv4/arp.c:643
arp_solicit+0xba5/0xde0 net/ipv4/arp.c:391
neigh_probe net/core/neighbour.c:1017 [inline]
neigh_timer_handler+0xaa9/0xfe0 net/core/neighbour.c:1099
call_timer_fn+0x17b/0x540 kernel/time/timer.c:1648
expire_timers kernel/time/timer.c:1699 [inline]
__run_timers+0x53e/0x800 kernel/time/timer.c:1970
run_timer_softirq+0x63/0xf0 kernel/time/timer.c:1983
handle_softirqs+0x339/0x830 kernel/softirq.c:576
__do_softirq kernel/softirq.c:610 [inline]
invoke_softirq kernel/softirq.c:450 [inline]
__irq_exit_rcu+0x13b/0x230 kernel/softirq.c:659
irq_exit_rcu+0x5/0x20 kernel/softirq.c:671
instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1108 [inline]
sysvec_apic_timer_interrupt+0xa0/0xc0 arch/x86/kernel/apic/apic.c:1108
asm_sysvec_apic_timer_interrupt+0x16/0x20 arch/x86/include/asm/idtentry.h:676
RIP: 0010:lock_acquire+0x1/0x400 kernel/locking/lockdep.c:5591
Code: 8d e8 43 3d 61 00 e9 2b fb ff ff 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 65 8b 05 b1 4a a5 7e a9 00 ff ff 00 0f 95 c0 c3 55 <48> 89 e5 41 57 41 56 41 55 41 54 53 48 83 e4 e0 48 81 ec e0 00 00
RSP: 0018:ffffc900030bf740 EFLAGS: 00000246
RAX: ffffffff88646c5a RBX: ffffffff966d23a0 RCX: 0000000000000002
RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffffffff8c31f360
RBP: ffffc900030bf870 R08: 0000000000000000 R09: 0000000000000000
R10: dffffc0000000000 R11: fffffbfff1b140de R12: 0000000000008935
R13: dffffc0000000000 R14: ffff88802c8449b0 R15: ffffffff8d61a8a8
rcu_lock_acquire+0x2a/0x30 include/linux/rcupdate.h:313
rcu_read_lock include/linux/rcupdate.h:740 [inline]
inet_twsk_purge+0x119/0x840 net/ipv4/inet_timewait_sock.c:268
ops_exit_list net/core/net_namespace.c:177 [inline]
setup_net+0x844/0xa10 net/core/net_namespace.c:365
copy_net_ns+0x348/0x5b0 net/core/net_namespace.c:503
create_new_namespaces+0x3d3/0x6f0 kernel/nsproxy.c:110
copy_namespaces+0x37d/0x3e0 kernel/nsproxy.c:178
copy_process+0x1834/0x3e20 kernel/fork.c:2293
kernel_clone+0x23f/0x990 kernel/fork.c:2679
__do_sys_clone kernel/fork.c:2796 [inline]
__se_sys_clone kernel/fork.c:2780 [inline]
__x64_sys_clone+0x19a/0x210 kernel/fork.c:2780
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: 0033:0x7f504876ce59
Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 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 e8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f50469c5fd8 EFLAGS: 00000202 ORIG_RAX: 0000000000000038
RAX: ffffffffffffffda RBX: 00007f50489e5fa0 RCX: 00007f504876ce59
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 00000000c0126080
RBP: 00007f5048802d6f R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000202 R12: 0000000000000000
R13: 00007f50489e6038 R14: 00007f50489e5fa0 R15: 00007fff05b9f458
----------------
Code disassembly (best guess):
0: 8d lea (bad),%ebp
1: e8 43 3d 61 00 call 0x613d49
6: e9 2b fb ff ff jmp 0xfffffb36
b: 66 2e 0f 1f 84 00 00 cs nopw 0x0(%rax,%rax,1)
12: 00 00 00
15: 0f 1f 40 00 nopl 0x0(%rax)
19: 65 8b 05 b1 4a a5 7e mov %gs:0x7ea54ab1(%rip),%eax # 0x7ea54ad1
20: a9 00 ff ff 00 test $0xffff00,%eax
25: 0f 95 c0 setne %al
28: c3 ret
29: 55 push %rbp
* 2a: 48 89 e5 mov %rsp,%rbp <-- trapping instruction
2d: 41 57 push %r15
2f: 41 56 push %r14
31: 41 55 push %r13
33: 41 54 push %r12
35: 53 push %rbx
36: 48 83 e4 e0 and $0xffffffffffffffe0,%rsp
3a: 48 rex.W
3b: 81 .byte 0x81
3c: ec in (%dx),%al
3d: e0 00 loopne 0x3f