------------[ cut here ]------------
WARNING: ./include/linux/ns_common.h:255 at __ns_ref_put include/linux/ns_common.h:255 [inline], CPU#0: syz-executor/5819
WARNING: ./include/linux/ns_common.h:255 at put_uts_ns include/linux/uts_namespace.h:37 [inline], CPU#0: syz-executor/5819
WARNING: ./include/linux/ns_common.h:255 at free_nsproxy+0x415/0x560 kernel/nsproxy.c:193, CPU#0: syz-executor/5819
Modules linked in:
CPU: 0 UID: 0 PID: 5819 Comm: syz-executor Not tainted syzkaller #0 PREEMPT(full) 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/02/2025
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 48 4d 33 00 48 8b 3d 71 71 32 11 48 89 de 5b 41 5c 41 5e 41 5f 5d e9 01 77 8e 00 e8 2c 4d 33 00 90 <0f> 0b 90 e9 ba fc ff ff e8 1e 4d 33 00 4c 89 ff be 03 00 00 00 e8
RSP: 0018:ffffc90003f9fcf0 EFLAGS: 00010293
RAX: ffffffff818e8304 RBX: ffff888065649270 RCX: ffff88807c849e80
RDX: 0000000000000000 RSI: 00000000ffffffff RDI: 0000000000000000
RBP: 00000000ffffffff R08: ffff888027b4c253 R09: 1ffff11004f6984a
R10: dffffc0000000000 R11: ffffed1004f6984b R12: dffffc0000000000
R13: 0000000000000100 R14: ffff888027b4c000 R15: ffff888027b4c250
FS:  0000000000000000(0000) GS:ffff888125a79000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f5ca32c4207 CR3: 0000000078982000 CR4: 00000000003526f0
Call Trace:
 <TASK>
 do_exit+0x6b8/0x2300 kernel/exit.c:969
 do_group_exit+0x21c/0x2d0 kernel/exit.c:1111
 __do_sys_exit_group kernel/exit.c:1122 [inline]
 __se_sys_exit_group kernel/exit.c:1120 [inline]
 __x64_sys_exit_group+0x3f/0x40 kernel/exit.c:1120
 x64_sys_call+0x2210/0x2210 arch/x86/include/generated/asm/syscalls_64.h:232
 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: 0033:0x7f9e8698f6c9
Code: Unable to access opcode bytes at 0x7f9e8698f69f.
RSP: 002b:00007ffc379a1ca8 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7
RAX: ffffffffffffffda RBX: 00007f9e86a11def RCX: 00007f9e8698f6c9
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000001
RBP: 0000000000000010 R08: 00007ffc3799fa46 R09: 00007ffc379a2f60
R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffc379a2f60
R13: 00007f9e86a11d7d R14: 000055558a0e84a8 R15: 00007ffc379a4030
 </TASK>