------------[ cut here ]------------
WARNING: ./include/linux/ns_common.h:288 at alloc_pid+0xcc8/0x1150, CPU#1: syz-executor.7/281
Modules linked in:
CPU: 1 UID: 0 PID: 281 Comm: syz-executor.7 Not tainted 6.18.0-rc4-next-20251105 #1 PREEMPT(voluntary) 
Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014
RIP: 0010:alloc_pid+0xcc8/0x1150
Code: 00 00 00 e8 9a 8c 6e 00 f0 83 83 68 01 00 00 01 0f 98 c3 31 ff 89 de e8 f6 76 31 00 84 db 0f 84 bc f3 ff ff e8 19 7c 31 00 90 <0f> 0b 90 e9 ae f3 ff ff e8 0b 7c 31 00 90 48 c7 c6 40 16 e7 84 48
RSP: 0018:ffff888016207ab0 EFLAGS: 00010293
RAX: 0000000000000000 RBX: ffff888013d0c201 RCX: ffffffff814320ca
RDX: ffff888017403780 RSI: ffffffff814320d7 RDI: 0000000000000001
RBP: ffff88806cf35d60 R08: 0000000000000001 R09: ffffed10027a1883
R10: 0000000000000001 R11: 0000000000000001 R12: ffff88806cf35d88
R13: ffffffff85d026e0 R14: ffff88801beeaa80 R15: ffff888013d0c2b0
FS:  00005555871fd400(0000) GS:ffff8880e54a5000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f9d43e9e3a4 CR3: 000000000f0e2000 CR4: 0000000000350ef0
Call Trace:
 <TASK>
 copy_process+0x3be1/0x72a0
 kernel_clone+0xea/0x7f0
 __do_sys_clone+0xce/0x120
 do_syscall_64+0xbf/0x430
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f70d14cd10b
Code: ed 0f 85 60 01 00 00 64 4c 8b 0c 25 10 00 00 00 45 31 c0 4d 8d 91 d0 02 00 00 31 d2 31 f6 bf 11 00 20 01 b8 38 00 00 00 0f 05 <48> 3d 00 f0 ff ff 0f 87 89 00 00 00 41 89 c5 85 c0 0f 85 90 00 00
RSP: 002b:00007fff27c370a0 EFLAGS: 00000246 ORIG_RAX: 0000000000000038
RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f70d14cd10b
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000001200011
RBP: 0000000000000001 R08: 0000000000000000 R09: 00005555871fd400
R10: 00005555871fd6d0 R11: 0000000000000246 R12: 0000000000000001
R13: 0000000000000001 R14: 0000000000000001 R15: 00007fff27c37180
 </TASK>
irq event stamp: 477979
hardirqs last  enabled at (477987): [<ffffffff815482d8>] __up_console_sem+0x78/0x80
hardirqs last disabled at (477996): [<ffffffff815482bd>] __up_console_sem+0x5d/0x80
softirqs last  enabled at (477648): [<ffffffff813bc08c>] handle_softirqs+0x50c/0x770
softirqs last disabled at (477625): [<ffffffff813bc424>] __irq_exit_rcu+0xc4/0x100
---[ end trace 0000000000000000 ]---
loop2: detected capacity change from 0 to 136
loop1: detected capacity change from 0 to 16383
ISOFS: Unable to identify CD-ROM format.