------------[ cut here ]------------
WARNING: CPU: 1 PID: 2434 at ./include/linux/ns_common.h:260 __ns_ref_active_get include/linux/ns_common.h:260 [inline]
WARNING: CPU: 1 PID: 2434 at ./include/linux/ns_common.h:260 alloc_pid+0x334/0x410 kernel/pid.c:285
Modules linked in:
CPU: 1 UID: 0 PID: 2434 Comm: syz-executor Not tainted syzkaller #0 PREEMPT(none) 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/02/2025
RIP: 0010:__ns_ref_active_get include/linux/ns_common.h:260 [inline]
RIP: 0010:alloc_pid+0x334/0x410 kernel/pid.c:285
Code: 48 c7 c7 40 81 a0 82 e8 ba d3 d2 00 e8 05 01 00 00 4d 85 ed 0f 84 bc 00 00 00 f0 41 83 85 00 01 00 00 01 0f 89 ad 00 00 00 90 <0f> 0b 90 e9 a4 00 00 00 8b 4c 24 04 f7 d9 83 fd e4 b8 f5 ff ff ff
RSP: 0018:ffffc900018f3cc8 EFLAGS: 00010286
RAX: 0000000080000000 RBX: ffff888101b25eb0 RCX: 0000000000000000
RDX: ffff888115c95088 RSI: ffffffff8275f5ed RDI: 00000000ffffffff
RBP: 0000000000000b4d R08: 0000000000000000 R09: 0000000000000000
R10: 0000000004000000 R11: ffffffff82a91300 R12: ffff888101b25dc0
R13: ffff888108b58c78 R14: ffff888101b25ec0 R15: 0000000000000000
FS:  0000555575a09500(0000) GS:ffff8882b48c4000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f3aff9956c0 CR3: 0000000117406000 CR4: 00000000003506f0
Call Trace:
 <TASK>
 copy_process+0x7ed/0x1120 kernel/fork.c:2197
 kernel_clone+0xf7/0x450 kernel/fork.c:2610
 __do_sys_clone kernel/fork.c:2751 [inline]
 __se_sys_clone kernel/fork.c:2735 [inline]
 __x64_sys_clone+0xc7/0xf0 kernel/fork.c:2735
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0xe2/0x2f0 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f3afec05e13
Code: 1f 84 00 00 00 00 00 64 48 8b 04 25 10 00 00 00 45 31 c0 31 d2 31 f6 bf 11 00 20 01 4c 8d 90 d0 02 00 00 b8 38 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 35 89 c2 85 c0 75 2c 64 48 8b 04 25 10 00 00
RSP: 002b:00007ffd702b3568 EFLAGS: 00000246 ORIG_RAX: 0000000000000038
RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f3afec05e13
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000001200011
RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000001
R10: 0000555575a097d0 R11: 0000000000000246 R12: 0000000000000001
R13: 00007f3afee31280 R14: 0000000000010089 R15: 00007ffd702b3700
 </TASK>