------------[ cut here ]------------
WARNING: CPU: 0 PID: 4702 at mm/maccess.c:226 copy_from_user_nofault+0x160/0x1c0 mm/maccess.c:226
Modules linked in:
CPU: 0 PID: 4702 Comm: syz.2.151 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:ffffc900000079e8 EFLAGS: 00010246
RAX: ffffffff81a07ea0 RBX: 0000000000000000 RCX: ffff888029aa3b80
RDX: 0000000000000100 RSI: 0000000000000000 RDI: 0000000000000000
RBP: 0000000000000000 R08: dffffc0000000000 R09: 1ffffffff2037218
R10: dffffc0000000000 R11: fffffbfff2037219 R12: ffff888029aa5308
R13: 1ffff92000000f50 R14: ffffc90000007a48 R15: 0000000000000000
FS:  00007fe1c40156c0(0000) GS:ffff8880b9000000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007feeb3ce9dac CR3: 000000002113d000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000600
Call Trace:
 <IRQ>
 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_7e47b8e39696360c+0x32/0x834
 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_run3+0x19e/0x350 kernel/trace/bpf_trace.c:1916
 __bpf_trace_kmem_cache_free+0x99/0xc0 include/trace/events/kmem.h:138
 trace_kmem_cache_free include/trace/events/kmem.h:138 [inline]
 kmem_cache_free+0x1e7/0x210 mm/slub.c:3521
 rcu_do_batch kernel/rcu/tree.c:2523 [inline]
 rcu_core+0x9d2/0x1670 kernel/rcu/tree.c:2763
 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
 </IRQ>
 <TASK>
 asm_sysvec_apic_timer_interrupt+0x16/0x20 arch/x86/include/asm/idtentry.h:676
RIP: 0010:trace_lock_release include/trace/events/lock.h:58 [inline]
RIP: 0010:lock_release+0xae/0x8a0 kernel/locking/lockdep.c:5634
Code: 83 fb 08 0f 83 4e 05 00 00 89 d8 c1 e8 06 48 8d 3c c5 a8 67 89 8d be 08 00 00 00 e8 3c a0 60 00 89 d8 48 0f a3 05 8a f2 2b 0c <73> 0d e8 6b 4c 07 00 84 c0 0f 84 53 05 00 00 48 c7 c0 44 9b 89 8d
RSP: 0018:ffffc900032bf4a0 EFLAGS: 00000257
RAX: 0000000000000000 RBX: 0000000000000000 RCX: ffffffff815d7514
RDX: 0000000000000000 RSI: 0000000000000008 RDI: ffffffff8d8967a8
RBP: ffffc900032bf5b0 R08: ffffffff8d8967af R09: 1ffffffff1b12cf5
R10: dffffc0000000000 R11: fffffbfff1b12cf6 R12: 1ffff92000657ea0
R13: dffffc0000000000 R14: ffff888016c42000 R15: 0000000000000001
 might_alloc include/linux/sched/mm.h:207 [inline]
 slab_pre_alloc_hook+0x27/0xc0 mm/slab.h:492
 slab_alloc_node mm/slub.c:3139 [inline]
 slab_alloc mm/slub.c:3233 [inline]
 __kmalloc+0x6b/0x330 mm/slub.c:4408
 kmalloc include/linux/slab.h:612 [inline]
 kzalloc include/linux/slab.h:738 [inline]
 __register_sysctl_table+0xe0/0x1230 fs/proc/proc_sysctl.c:1324
 __addrconf_sysctl_register+0x271/0x3e0 net/ipv6/addrconf.c:7103
 addrconf_init_net+0x35a/0x5a0 net/ipv6/addrconf.c:7214
 ops_init+0x357/0x600 net/core/net_namespace.c:138
 setup_net+0x39e/0xa10 net/core/net_namespace.c:333
 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: 0033:0x7fe1c5db9cb9
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:00007fe1c4014fd8 EFLAGS: 00000206 ORIG_RAX: 0000000000000038
RAX: ffffffffffffffda RBX: 00007fe1c6034fa0 RCX: 00007fe1c5db9cb9
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 00000000630c1000
RBP: 00007fe1c5e27bf7 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000206 R12: 0000000000000000
R13: 00007fe1c6035038 R14: 00007fe1c6034fa0 R15: 00007fff311b9f98
 </TASK>
----------------
Code disassembly (best guess):
   0:	83 fb 08             	cmp    $0x8,%ebx
   3:	0f 83 4e 05 00 00    	jae    0x557
   9:	89 d8                	mov    %ebx,%eax
   b:	c1 e8 06             	shr    $0x6,%eax
   e:	48 8d 3c c5 a8 67 89 	lea    -0x72769858(,%rax,8),%rdi
  15:	8d
  16:	be 08 00 00 00       	mov    $0x8,%esi
  1b:	e8 3c a0 60 00       	call   0x60a05c
  20:	89 d8                	mov    %ebx,%eax
  22:	48 0f a3 05 8a f2 2b 	bt     %rax,0xc2bf28a(%rip)        # 0xc2bf2b4
  29:	0c
* 2a:	73 0d                	jae    0x39 <-- trapping instruction
  2c:	e8 6b 4c 07 00       	call   0x74c9c
  31:	84 c0                	test   %al,%al
  33:	0f 84 53 05 00 00    	je     0x58c
  39:	48 c7 c0 44 9b 89 8d 	mov    $0xffffffff8d899b44,%rax