------------[ cut here ]------------
WARNING: fs/namespace.c:1434 at mntput_no_expire+0x78e/0xbe0, CPU#1: syz-executor.6/3997
Modules linked in:
CPU: 1 UID: 0 PID: 3997 Comm: syz-executor.6 Tainted: G        W           6.17.0-rc4-next-20250901 #1 PREEMPT(voluntary) 
Tainted: [W]=WARN
Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014
RIP: 0010:mntput_no_expire+0x78e/0xbe0
Code: 05 d6 30 81 04 01 e8 71 df 91 ff e9 41 fc ff ff e8 27 47 b4 ff 31 ff 44 89 ee e8 4d 42 b4 ff 45 85 ed 79 09 e8 13 47 b4 ff 90 <0f> 0b 90 e8 0a 47 b4 ff e8 b5 2d fc 02 31 ff 89 c5 89 c6 e8 2a 42
RSP: 0018:ffff8880480679b8 EFLAGS: 00010293
RAX: 0000000000000000 RBX: 1ffff1100900cf3c RCX: ffffffff81bfaf93
RDX: ffff88801a185280 RSI: ffffffff81bfaf9d RDI: 0000000000000005
RBP: ffff88800e84c380 R08: 0000000000000001 R09: 0000000000000000
R10: 00000000ffffffff R11: 0000000000000001 R12: ffff888048067a20
R13: 00000000ffffffff R14: dead000000000100 R15: ffff88800e84c380
FS:  0000000000000000(0000) GS:ffff8880e56d8000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00005594eafe4098 CR3: 000000001fa89000 CR4: 0000000000350ef0
Call Trace:
 <TASK>
 namespace_unlock+0x7f1/0x810
 put_mnt_ns+0xf5/0x120
 free_nsproxy+0x3a/0x400
 switch_task_namespaces+0xe2/0x100
 do_exit+0x841/0x2970
 do_group_exit+0xd3/0x2a0
 get_signal+0x2315/0x2340
 arch_do_signal_or_restart+0x80/0x790
 irqentry_exit_to_user_mode+0x106/0x1c0
 exc_page_fault+0xd9/0x180
 asm_exc_page_fault+0x26/0x30
RIP: 0033:0x7fa1be913436
Code: Unable to access opcode bytes at 0x7fa1be91340c.
RSP: 002b:00007fa1bbee21a0 EFLAGS: 00010217
RAX: 0000000000000000 RBX: 00007fa1bea7ff60 RCX: 00007fa1bea7ff60
RDX: 0000000000000000 RSI: 00007fa1be91342e RDI: 00000000200002c0
RBP: 00007fa1be9c6f6d R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fffb665880f R14: 00007fa1bbee2300 R15: 0000000000022000
 </TASK>
irq event stamp: 777
hardirqs last  enabled at (787): [<ffffffff81541b18>] __up_console_sem+0x78/0x80
hardirqs last disabled at (794): [<ffffffff81541afd>] __up_console_sem+0x5d/0x80
softirqs last  enabled at (592): [<ffffffff813bafcc>] handle_softirqs+0x50c/0x770
softirqs last disabled at (587): [<ffffffff813bb364>] __irq_exit_rcu+0xc4/0x100
---[ end trace 0000000000000000 ]---
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