------------[ cut here ]------------
WARNING: ./include/linux/ns_common.h:288 at __ns_ref_active_get include/linux/ns_common.h:288 [inline], CPU#1: syz.3.1008/8759
WARNING: ./include/linux/ns_common.h:288 at nsproxy_ns_active_get+0x88f/0xcb0 fs/nsfs.c:689, CPU#1: syz.3.1008/8759
Modules linked in:
CPU: 1 UID: 0 PID: 8759 Comm: syz.3.1008 Not tainted syzkaller #0 PREEMPT(full) 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/02/2025
RIP: 0010:__ns_ref_active_get include/linux/ns_common.h:288 [inline]
RIP: 0010:nsproxy_ns_active_get+0x88f/0xcb0 fs/nsfs.c:689
Code: 00 e8 75 3f 77 ff eb 0c e8 6e 3f 77 ff eb 05 e8 67 3f 77 ff 5b 41 5c 41 5d 41 5e 41 5f 5d c3 cc cc cc cc cc e8 52 3f 77 ff 90 <0f> 0b 90 e9 ee f7 ff ff e8 44 3f 77 ff 90 0f 0b 90 e9 12 f8 ff ff
RSP: 0018:ffffc90017f1f940 EFLAGS: 00010283
RAX: ffffffff824a202e RBX: ffff88805fa161a0 RCX: 0000000000080000
RDX: ffffc9000c229000 RSI: 0000000000040e6f RDI: 0000000000040e70
RBP: ffffffff8e1dfe01 R08: ffff888028bd48bb R09: 1ffff1100517a917
R10: dffffc0000000000 R11: ffffed100517a918 R12: dffffc0000000000
R13: ffffffff818e1b9c R14: ffff888028bd48b8 R15: ffff888028bd4800
FS:  00007f8e98e8f6c0(0000) GS:ffff888125b82000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f8e98e8ef98 CR3: 0000000076a1c000 CR4: 00000000003526f0
Call Trace:
 <TASK>
 copy_namespaces+0x48c/0x4b0 kernel/nsproxy.c:183
 copy_process+0x168f/0x3930 kernel/fork.c:2183
 kernel_clone+0x21e/0x850 kernel/fork.c:2609
 __do_sys_clone3 kernel/fork.c:2911 [inline]
 __se_sys_clone3+0x256/0x2d0 kernel/fork.c:2890
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0xfa/0xfa0 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f8e97f8f6c9
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:00007f8e98e8ef08 EFLAGS: 00000246 ORIG_RAX: 00000000000001b3
RAX: ffffffffffffffda RBX: 0000000000000058 RCX: 00007f8e97f8f6c9
RDX: 00007f8e98e8ef20 RSI: 0000000000000058 RDI: 00007f8e98e8ef20
RBP: 00007f8e98011f91 R08: 0000000000000000 R09: 0000000000000058
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f8e981e6038 R14: 00007f8e981e5fa0 R15: 00007fff1f3bbd68
 </TASK>