------------[ cut here ]------------
WARNING: CPU: 0 PID: 5672 at mm/maccess.c:226 copy_from_user_nofault+0x160/0x1c0 mm/maccess.c:226
Modules linked in:
CPU: 0 PID: 5672 Comm: syz.0.548 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025
RIP: 0010:copy_from_user_nofault+0x160/0x1c0 mm/maccess.c:226
Code: 24 45 31 f6 31 ff 89 de e8 7d 94 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 00 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:ffffc900000071a8 EFLAGS: 00010006
RAX: ffffffff81a08ea0 RBX: 0000000000000008 RCX: ffff88802c1d3b80
RDX: 0000000000010000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: 0000000000000000 R08: ffffffff8f0e6008 R09: ffffffff8f0e6018
R10: ffffffff8f0e6010 R11: ffffffff8f0e6003 R12: ffff88802c1d5308
R13: ffffc90001189000 R14: ffffc90000007208 R15: 0000000020003d28
FS: 00007f409f25d6c0(0000) GS:ffff8880b9000000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000055558e4339e8 CR3: 000000005756b000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000ffff0ff1 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_b4614f1d74b4343c+0x38/0x98c
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_ARRAY include/linux/bpf.h:1439 [inline]
trace_call_bpf+0x32d/0x5b0 kernel/trace/bpf_trace.c:127
perf_trace_run_bpf_submit+0x79/0x1c0 kernel/events/core.c:10016
perf_trace_lock_acquire+0x340/0x3e0 include/trace/events/lock.h:13
trace_lock_acquire include/trace/events/lock.h:13 [inline]
lock_acquire+0x3d7/0x400 kernel/locking/lockdep.c:5594
rcu_lock_acquire+0x2a/0x30 include/linux/rcupdate.h:313
rcu_read_lock include/linux/rcupdate.h:740 [inline]
is_bpf_text_address+0x1d/0x270 kernel/bpf/core.c:725
kernel_text_address kernel/extable.c:151 [inline]
__kernel_text_address+0x9a/0x100 kernel/extable.c:105
unwind_get_return_address+0x49/0x80 arch/x86/kernel/unwind_orc.c:323
perf_callchain_kernel+0x34c/0x720 arch/x86/events/core.c:2784
get_perf_callchain+0x356/0x460 kernel/events/callchain.c:200
perf_callchain kernel/events/core.c:7606 [inline]
perf_prepare_sample+0x352/0x1cd0 kernel/events/core.c:7633
__perf_event_output kernel/events/core.c:7802 [inline]
perf_event_output_forward+0x185/0x2e0 kernel/events/core.c:7822
__perf_event_overflow+0x364/0x530 kernel/events/core.c:9515
perf_swevent_hrtimer+0x41b/0x5b0 kernel/events/core.c:10934
__run_hrtimer kernel/time/hrtimer.c:1685 [inline]
__hrtimer_run_queues+0x4ad/0xb70 kernel/time/hrtimer.c:1749
hrtimer_interrupt+0x3bb/0x8d0 kernel/time/hrtimer.c:1811
local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1097 [inline]
__sysvec_apic_timer_interrupt+0x137/0x4a0 arch/x86/kernel/apic/apic.c:1114
instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1108 [inline]
sysvec_apic_timer_interrupt+0x9b/0xc0 arch/x86/kernel/apic/apic.c:1108
asm_sysvec_apic_timer_interrupt+0x16/0x20 arch/x86/include/asm/idtentry.h:676
RIP: 0010:rcu_rnp_online_cpus kernel/rcu/tree.c:222 [inline]
RIP: 0010:rcu_lockdep_current_cpu_online+0xbd/0x130 kernel/rcu/tree.c:1173
Code: 20 4c 89 f0 48 c1 e8 03 42 80 3c 38 00 74 08 4c 89 f7 e8 26 50 59 00 4d 8b 26 4c 8d 73 70 4c 89 f0 48 c1 e8 03 42 80 3c 38 00 <74> 08 4c 89 f7 e8 09 50 59 00 4d 85 26 75 27 48 83 c3 78 48 89 d8
RSP: 0018:ffffc9000347f4e8 EFLAGS: 00000246
RAX: 1ffffffff18645ee RBX: ffffffff8c322f00 RCX: 9c8032a25d21c400
RDX: 0000000000000002 RSI: ffffffff8a79f760 RDI: ffff8880b903b1d8
RBP: 0000000000005985 R08: dffffc0000000000 R09: 1ffffffff203a218
R10: dffffc0000000000 R11: fffffbfff203a219 R12: 0000000000000001
R13: ffff888077b10000 R14: ffffffff8c322f70 R15: dffffc0000000000
rcu_read_lock_held_common kernel/rcu/update.c:112 [inline]
rcu_read_lock_held+0x1a/0x40 kernel/rcu/update.c:309
dev_map_notification+0x689/0x990 kernel/bpf/devmap.c:1103
notifier_call_chain kernel/notifier.c:83 [inline]
raw_notifier_call_chain+0xcb/0x160 kernel/notifier.c:391
call_netdevice_notifiers_extack net/core/dev.c:2061 [inline]
call_netdevice_notifiers net/core/dev.c:2075 [inline]
unregister_netdevice_many+0x1049/0x19f0 net/core/dev.c:11134
ip_tunnel_delete_nets+0x320/0x370 net/ipv4/ip_tunnel.c:1137
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: 0033:0x7f40a1001eb9
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:00007f409f25cfd8 EFLAGS: 00000206 ORIG_RAX: 0000000000000038
RAX: ffffffffffffffda RBX: 00007f40a127cfa0 RCX: 00007f40a1001eb9
RDX: 0000000000000000 RSI: 0000000000000050 RDI: 0000000043b00000
RBP: 00007f40a106fc1f R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000206 R12: 0000000000000000
R13: 00007f40a127d038 R14: 00007f40a127cfa0 R15: 00007ffd7099c978
----------------
Code disassembly (best guess):
0: 20 4c 89 f0 and %cl,-0x10(%rcx,%rcx,4)
4: 48 c1 e8 03 shr $0x3,%rax
8: 42 80 3c 38 00 cmpb $0x0,(%rax,%r15,1)
d: 74 08 je 0x17
f: 4c 89 f7 mov %r14,%rdi
12: e8 26 50 59 00 call 0x59503d
17: 4d 8b 26 mov (%r14),%r12
1a: 4c 8d 73 70 lea 0x70(%rbx),%r14
1e: 4c 89 f0 mov %r14,%rax
21: 48 c1 e8 03 shr $0x3,%rax
25: 42 80 3c 38 00 cmpb $0x0,(%rax,%r15,1)
* 2a: 74 08 je 0x34 <-- trapping instruction
2c: 4c 89 f7 mov %r14,%rdi
2f: e8 09 50 59 00 call 0x59503d
34: 4d 85 26 test %r12,(%r14)
37: 75 27 jne 0x60
39: 48 83 c3 78 add $0x78,%rbx
3d: 48 89 d8 mov %rbx,%rax