------------[ cut here ]------------
WARNING: CPU: 0 PID: 9 at mm/maccess.c:226 copy_from_user_nofault+0x160/0x1c0 mm/maccess.c:226
Modules linked in:
CPU: 0 PID: 9 Comm: kworker/u4:0 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026
Workqueue: netns cleanup_net
RIP: 0010:copy_from_user_nofault+0x160/0x1c0 mm/maccess.c:226
Code: 24 45 31 f6 31 ff 89 de e8 fd 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 80 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:ffffc90000007bb0 EFLAGS: 00010006
RAX: ffffffff81a08f90 RBX: 0000000000000000 RCX: ffff88813fe90000
RDX: 0000000000010000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: 0000000000000000 R08: ffff88813fe90007 R09: 1ffff11027fd2000
R10: dffffc0000000000 R11: ffffed1027fd2001 R12: ffff88813fe91788
R13: 00007ffffffff000 R14: ffffc90000007be8 R15: 0000000020000000
FS:  0000000000000000(0000) GS:ffff8880b9000000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000000000000 CR3: 000000006a05c000 CR4: 00000000003506f0
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_8fc34fd13f997abc+0x3d/0x27c
 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_run2+0x163/0x2e0 kernel/trace/bpf_trace.c:1915
 trace_hrtimer_start include/trace/events/timer.h:199 [inline]
 debug_activate kernel/time/hrtimer.c:466 [inline]
 enqueue_hrtimer+0x314/0x370 kernel/time/hrtimer.c:1069
 __run_hrtimer kernel/time/hrtimer.c:1702 [inline]
 __hrtimer_run_queues+0x5fa/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
 </IRQ>
 <TASK>
 asm_sysvec_apic_timer_interrupt+0x16/0x20 arch/x86/include/asm/idtentry.h:676
RIP: 0010:lock_acquire+0x11/0x400 kernel/locking/lockdep.c:5591
Code: 00 00 00 00 00 0f 1f 40 00 65 8b 05 01 70 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 00 4c 89 4c 24 20 4c 89 44 24 30 48 89 4c 24 28
RSP: 0018:ffffc90000ce79e0 EFLAGS: 00000282

RAX: ffffffff8863a22a RBX: ffffffff966ce260 RCX: 0000000000000002
RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffffffff8c31eaa0
RBP: ffffc90000ce7a20 R08: 0000000000000000 R09: 0000000000000000
R10: dffffc0000000000 R11: fffffbfff1b13c6e R12: 00000000000580a4
R13: dffffc0000000000 R14: ffff88814d2c0528 R15: ffffffff8d6185c0
 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]
 cleanup_net+0x791/0xba0 net/core/net_namespace.c:635
 process_one_work+0x85f/0x1010 kernel/workqueue.c:2310
 worker_thread+0xaa6/0x1290 kernel/workqueue.c:2457
 kthread+0x436/0x520 kernel/kthread.c:334
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:287
 </TASK>
----------------
Code disassembly (best guess), 1 bytes skipped:
   0:	00 00                	add    %al,(%rax)
   2:	00 00                	add    %al,(%rax)
   4:	0f 1f 40 00          	nopl   0x0(%rax)
   8:	65 8b 05 01 70 a5 7e 	mov    %gs:0x7ea57001(%rip),%eax        # 0x7ea57010
   f:	a9 00 ff ff 00       	test   $0xffff00,%eax
  14:	0f 95 c0             	setne  %al
  17:	c3                   	ret
  18:	55                   	push   %rbp
  19:	48 89 e5             	mov    %rsp,%rbp
  1c:	41 57                	push   %r15
  1e:	41 56                	push   %r14
  20:	41 55                	push   %r13
  22:	41 54                	push   %r12
  24:	53                   	push   %rbx
  25:	48 83 e4 e0          	and    $0xffffffffffffffe0,%rsp
* 29:	48 81 ec e0 00 00 00 	sub    $0xe0,%rsp <-- trapping instruction
  30:	4c 89 4c 24 20       	mov    %r9,0x20(%rsp)
  35:	4c 89 44 24 30       	mov    %r8,0x30(%rsp)
  3a:	48 89 4c 24 28       	mov    %rcx,0x28(%rsp)