------------[ cut here ]------------
WARNING: ./include/linux/ns_common.h:255 at __ns_ref_put include/linux/ns_common.h:255 [inline], CPU#0: syz-executor/5824
WARNING: ./include/linux/ns_common.h:255 at put_cgroup_ns include/linux/cgroup_namespace.h:39 [inline], CPU#0: syz-executor/5824
WARNING: ./include/linux/ns_common.h:255 at free_nsproxy+0x484/0x560 kernel/nsproxy.c:198, CPU#0: syz-executor/5824
Modules linked in:
CPU: 0 UID: 0 PID: 5824 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_cgroup_ns include/linux/cgroup_namespace.h:39 [inline]
RIP: 0010:free_nsproxy+0x484/0x560 kernel/nsproxy.c:198
Code: 42 31 33 00 90 0f 0b 90 e9 0c fe ff ff e8 34 31 33 00 4c 89 ff be 03 00 00 00 e8 e7 7b 09 03 e9 18 fe ff ff e8 1d 31 33 00 90 <0f> 0b 90 e9 95 fe ff ff e8 0f 31 33 00 4c 89 ff be 03 00 00 00 e8
RSP: 0018:ffffc9000496fcf0 EFLAGS: 00010293
RAX: ffffffff818e2bf3 RBX: ffff88801d297618 RCX: ffff88807e131e80
RDX: 0000000000000000 RSI: 00000000ffffffff RDI: 0000000000000000
RBP: 00000000ffffffff R08: ffff88807dd51ebb R09: 1ffff1100fbaa3d7
R10: dffffc0000000000 R11: ffffed100fbaa3d8 R12: dffffc0000000000
R13: 0000000000000100 R14: ffff88807dd51e00 R15: ffff88807dd51eb8
FS:  0000000000000000(0000) GS:ffff888125a83000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007ffcdaec9e00 CR3: 0000000078872000 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: 0033:0x7ff1e598f6c9
Code: Unable to access opcode bytes at 0x7ff1e598f69f.
RSP: 002b:00007ffcdaecbef8 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7
RAX: ffffffffffffffda RBX: 00007ff1e5a11def RCX: 00007ff1e598f6c9
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000001
RBP: 0000000000000016 R08: 00007ffcdaec9c96 R09: 00007ffcdaecd1b0
R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffcdaecd1b0
R13: 00007ff1e5a11d7d R14: 00005555886d04a8 R15: 00007ffcdaecf370
 </TASK>