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WARNING: ./include/linux/ns_common.h:288 at nsproxy_ns_active_get+0x369/0x3d0, CPU#1: syz-executor.2/140603
Modules linked in:
CPU: 1 UID: 0 PID: 140603 Comm: syz-executor.2 Not tainted 6.18.0-rc4-next-20251107 #1 PREEMPT(voluntary) 
Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014
RIP: 0010:nsproxy_ns_active_get+0x369/0x3d0
Code: 0f 0b 90 e9 e5 fd ff ff e8 14 24 ab ff 90 0f 0b 90 e9 38 fe ff ff e8 06 24 ab ff 90 0f 0b 90 e9 8b fe ff ff e8 f8 23 ab ff 90 <0f> 0b 90 e9 de fe ff ff e8 ea 23 ab ff 90 0f 0b 90 e9 31 ff ff ff
RSP: 0018:ffff888016f87e08 EFLAGS: 00010216
RAX: 000000000000146d RBX: ffff8880532d2c30 RCX: ffffc90004c4b000
RDX: 0000000000040000 RSI: ffffffff81c9ab38 RDI: 0000000000000001
RBP: ffff88801c3b1801 R08: 0000000000000001 R09: ffffed100387634a
R10: 0000000000000001 R11: 0000000000000001 R12: ffff8880177d8000
R13: 0000000000000000 R14: ffff888051ee3780 R15: ffff888016f87e98
FS:  00007f9f02f99700(0000) GS:ffff8880e5498000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000001b2d221000 CR3: 0000000051f63000 CR4: 0000000000350ef0
Call Trace:
 <TASK>
 switch_task_namespaces+0x3d/0x110
 __do_sys_setns+0x6b0/0x19a0
 do_syscall_64+0xbf/0x430
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f9f05a25107
Code: 73 01 c3 48 c7 c1 bc ff ff ff f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 b8 34 01 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 bc ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f9f02f99128 EFLAGS: 00000246 ORIG_RAX: 0000000000000134
RAX: ffffffffffffffda RBX: 0000000000000006 RCX: 00007f9f05a25107
RDX: 0000000000000001 RSI: 0000000000000000 RDI: 0000000000000005
RBP: 0000000000000005 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00007f9f02f996bc
R13: 000000000000000e R14: 00007f9f02f99300 R15: 0000000000022000
 </TASK>
irq event stamp: 1037
hardirqs last  enabled at (1045): [<ffffffff81548fa8>] __up_console_sem+0x78/0x80
hardirqs last disabled at (1054): [<ffffffff81548f8d>] __up_console_sem+0x5d/0x80
softirqs last  enabled at (838): [<ffffffff813bc48c>] handle_softirqs+0x50c/0x770
softirqs last disabled at (819): [<ffffffff813bc824>] __irq_exit_rcu+0xc4/0x100
---[ end trace 0000000000000000 ]---