------------[ cut here ]------------
WARNING: ./include/linux/ns_common.h:288 at __ns_ref_active_get include/linux/ns_common.h:288 [inline], CPU#1: syz.5.3080/21035
WARNING: ./include/linux/ns_common.h:288 at nsproxy_ns_active_get+0x88f/0xcb0 fs/nsfs.c:689, CPU#1: syz.5.3080/21035
Modules linked in:
CPU: 1 UID: 0 PID: 21035 Comm: syz.5.3080 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 a5 ea 76 ff eb 0c e8 9e ea 76 ff eb 05 e8 97 ea 76 ff 5b 41 5c 41 5d 41 5e 41 5f 5d c3 cc cc cc cc cc e8 82 ea 76 ff 90 <0f> 0b 90 e9 ee f7 ff ff e8 74 ea 76 ff 90 0f 0b 90 e9 12 f8 ff ff
RSP: 0018:ffffc90011b47d40 EFLAGS: 00010287
RAX: ffffffff824a34fe RBX: ffff888060bf92d8 RCX: 0000000000080000
RDX: ffffc90012fd2000 RSI: 0000000000000205 RDI: 0000000000000206
RBP: ffffc90011b47e01 R08: ffff88805803f0bb R09: 1ffff1100b007e17
R10: dffffc0000000000 R11: ffffed100b007e18 R12: dffffc0000000000
R13: dffffc0000000000 R14: ffff88805803f0b8 R15: ffff88805803f000
FS:  00007fd89d9f66c0(0000) GS:ffff888125fcc000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fddaec5f000 CR3: 00000000558c0000 CR4: 00000000003526f0
Call Trace:
 <TASK>
 switch_task_namespaces+0x3e/0x110 kernel/nsproxy.c:240
 commit_nsset kernel/nsproxy.c:555 [inline]
 __do_sys_setns kernel/nsproxy.c:591 [inline]
 __se_sys_setns+0x784/0x17d0 kernel/nsproxy.c:559
 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: 0033:0x7fd89f78f6c9
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:00007fd89d9f6038 EFLAGS: 00000246 ORIG_RAX: 0000000000000134
RAX: ffffffffffffffda RBX: 00007fd89f9e6090 RCX: 00007fd89f78f6c9
RDX: 0000000000000000 RSI: 0000000024020000 RDI: 0000000000000005
RBP: 00007fd89f811f91 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fd89f9e6128 R14: 00007fd89f9e6090 R15: 00007ffdccf4a0d8
 </TASK>