------------[ cut here ]------------
WARNING: ./include/linux/ns_common.h:255 at __ns_ref_put include/linux/ns_common.h:255 [inline], CPU#1: syz.3.943/9448
WARNING: ./include/linux/ns_common.h:255 at put_uts_ns include/linux/uts_namespace.h:37 [inline], CPU#1: syz.3.943/9448
WARNING: ./include/linux/ns_common.h:255 at free_nsproxy+0x415/0x560 kernel/nsproxy.c:193, CPU#1: syz.3.943/9448
Modules linked in:
CPU: 1 UID: 0 PID: 9448 Comm: syz.3.943 Not tainted syzkaller #0 PREEMPT(full) 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025
RIP: 0010:__ns_ref_put include/linux/ns_common.h:255 [inline]
RIP: 0010:put_uts_ns include/linux/uts_namespace.h:37 [inline]
RIP: 0010:free_nsproxy+0x415/0x560 kernel/nsproxy.c:193
Code: 85 ed 0f 8e be 00 00 00 e8 b8 33 33 00 48 8b 3d 91 38 32 11 48 89 de 5b 41 5c 41 5e 41 5f 5d e9 81 34 8e 00 e8 9c 33 33 00 90 <0f> 0b 90 e9 ba fc ff ff e8 8e 33 33 00 4c 89 ff be 03 00 00 00 e8
RSP: 0018:ffffc9000475fad0 EFLAGS: 00010293
RAX: ffffffff818e2be4 RBX: ffff8880639986e8 RCX: ffff88802a6f3d00
RDX: 0000000000000000 RSI: 00000000ffffffff RDI: 0000000000000000
RBP: 00000000ffffffff R08: ffff88807554c52b R09: 1ffff1100eaa98a5
R10: dffffc0000000000 R11: ffffed100eaa98a6 R12: dffffc0000000000
R13: 0000000000000009 R14: ffff88807554c2d8 R15: ffff88807554c528
FS:  0000000000000000(0000) GS:ffff888125b82000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007ff13be5d368 CR3: 000000007d358000 CR4: 00000000003526f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 000000000000047d
DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 do_exit+0x6b8/0x2300 kernel/exit.c:969
 do_group_exit+0x21c/0x2d0 kernel/exit.c:1111
 get_signal+0x1285/0x1340 kernel/signal.c:3034
 arch_do_signal_or_restart+0x9a/0x7a0 arch/x86/kernel/signal.c:337
 __exit_to_user_mode_loop kernel/entry/common.c:41 [inline]
 exit_to_user_mode_loop kernel/entry/common.c:75 [inline]
 __exit_to_user_mode_prepare include/linux/irq-entry-common.h:226 [inline]
 irqentry_exit_to_user_mode_prepare include/linux/irq-entry-common.h:270 [inline]
 irqentry_exit_to_user_mode include/linux/irq-entry-common.h:339 [inline]
 irqentry_exit+0x171/0x640 kernel/entry/common.c:196
 exc_page_fault+0xab/0x100 arch/x86/mm/fault.c:1535
 asm_exc_page_fault+0x26/0x30 arch/x86/include/asm/idtentry.h:618
RIP: 0033:0x7fcc6118f6d1
Code: Unable to access opcode bytes at 0x7fcc6118f6a7.
RSP: 002b:fffffffffffffea0 EFLAGS: 00010217
RAX: 0000000000000000 RBX: 00007fcc613e5fa0 RCX: 00007fcc6118f6c9
RDX: 0000000000000000 RSI: fffffffffffffea0 RDI: 0000000000000000
RBP: 00007fcc61211f91 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fcc613e6038 R14: 00007fcc613e5fa0 R15: 00007ffde82f0f28
 </TASK>