------------[ cut here ]------------
WARNING: ./include/linux/ns_common.h:288 at nsproxy_ns_active_get+0x33f/0x3d0, CPU#1: syz-executor.4/21322
Modules linked in:
CPU: 1 UID: 0 PID: 21322 Comm: syz-executor.4 Not tainted 6.18.0-rc4-next-20251104 #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+0x33f/0x3d0
Code: ab ff 90 0f 0b 90 eb ee e8 0e dd ab ff 90 0f 0b 90 e9 3f fd ff ff e8 00 dd ab ff 90 0f 0b 90 e9 92 fd ff ff e8 f2 dc ab ff 90 <0f> 0b 90 e9 e5 fd ff ff e8 e4 dc ab ff 90 0f 0b 90 e9 38 fe ff ff
RSP: 0018:ffff8880183d7e08 EFLAGS: 00010212
RAX: 0000000000000d4d RBX: ffff88804a9d2548 RCX: ffffc9000e05d000
RDX: 0000000000040000 RSI: ffffffff81c8ab7e RDI: 0000000000000001
RBP: ffff888016430001 R08: 0000000000000001 R09: ffffed1002c86141
R10: 0000000000000001 R11: 0000000000000001 R12: ffff888016825880
R13: 0000000000000000 R14: ffff888019811bc0 R15: ffff8880183d7e98
FS:  00007feea02a5700(0000) GS:ffff8880e54a8000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000001b2d125000 CR3: 000000000dafa000 CR4: 0000000000350ef0
Call Trace:
 <TASK>
 switch_task_namespaces+0x3d/0x110
 __do_sys_setns+0x6b0/0x19a0
 do_syscall_64+0xbf/0x3f0
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7feea2d31107
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:00007feea02a5128 EFLAGS: 00000246 ORIG_RAX: 0000000000000134
RAX: ffffffffffffffda RBX: 00007feea2e42f60 RCX: 00007feea2d31107
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 00000000000000ef
RBP: 0000000000000003 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007ffefb11b49f R14: 00007feea02a5300 R15: 0000000000022000
 </TASK>
irq event stamp: 581
hardirqs last  enabled at (589): [<ffffffff81547428>] __up_console_sem+0x78/0x80
hardirqs last disabled at (598): [<ffffffff8154740d>] __up_console_sem+0x5d/0x80
softirqs last  enabled at (570): [<ffffffff813bc1cc>] handle_softirqs+0x50c/0x770
softirqs last disabled at (555): [<ffffffff813bc564>] __irq_exit_rcu+0xc4/0x100
---[ end trace 0000000000000000 ]---
------------[ cut here ]------------
WARNING: ./include/linux/ns_common.h:288 at nsproxy_ns_active_get+0x35b/0x3d0, CPU#1: syz-executor.4/21322
Modules linked in:
CPU: 1 UID: 0 PID: 21322 Comm: syz-executor.4 Tainted: G        W           6.18.0-rc4-next-20251104 #1 PREEMPT(voluntary) 
Tainted: [W]=WARN
Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014
RIP: 0010:nsproxy_ns_active_get+0x35b/0x3d0
Code: 0f 0b 90 e9 92 fd ff ff e8 f2 dc ab ff 90 0f 0b 90 e9 e5 fd ff ff e8 e4 dc ab ff 90 0f 0b 90 e9 38 fe ff ff e8 d6 dc ab ff 90 <0f> 0b 90 e9 8b fe ff ff e8 c8 dc ab ff 90 0f 0b 90 e9 de fe ff ff
RSP: 0018:ffff8880183d7e08 EFLAGS: 00010212
RAX: 000000000001affe RBX: ffff88804a9d2548 RCX: ffffc9000e05d000
RDX: 0000000000040000 RSI: ffffffff81c8ab9a RDI: 0000000000000001
RBP: ffff88800dd34201 R08: 0000000000000001 R09: ffffed1001ba6857
R10: 0000000000000001 R11: 0000000000000001 R12: ffff888016825880
R13: 0000000000000000 R14: ffff888019811bc0 R15: ffff8880183d7e98
FS:  00007feea02a5700(0000) GS:ffff8880e54a8000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000001b2d125000 CR3: 000000000dafa000 CR4: 0000000000350ef0
Call Trace:
 <TASK>
 switch_task_namespaces+0x3d/0x110
 __do_sys_setns+0x6b0/0x19a0
 do_syscall_64+0xbf/0x3f0
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7feea2d31107
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:00007feea02a5128 EFLAGS: 00000246 ORIG_RAX: 0000000000000134
RAX: ffffffffffffffda RBX: 00007feea2e42f60 RCX: 00007feea2d31107
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 00000000000000ef
RBP: 0000000000000003 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007ffefb11b49f R14: 00007feea02a5300 R15: 0000000000022000
 </TASK>
irq event stamp: 967
hardirqs last  enabled at (977): [<ffffffff81547428>] __up_console_sem+0x78/0x80
hardirqs last disabled at (984): [<ffffffff8154740d>] __up_console_sem+0x5d/0x80
softirqs last  enabled at (570): [<ffffffff813bc1cc>] handle_softirqs+0x50c/0x770
softirqs last disabled at (555): [<ffffffff813bc564>] __irq_exit_rcu+0xc4/0x100
---[ end trace 0000000000000000 ]---