------------[ cut here ]------------
WARNING: fs/namespace.c:1434 at mntput_no_expire+0x78e/0xbe0, CPU#0: syz-executor.4/4047
Modules linked in:
CPU: 0 UID: 0 PID: 4047 Comm: syz-executor.4 Tainted: G        W           6.17.0-rc3-next-20250829 #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 16 42 81 04 01 e8 31 f8 91 ff e9 41 fc ff ff e8 b7 50 b4 ff 31 ff 44 89 ee e8 dd 4b b4 ff 45 85 ed 79 09 e8 a3 50 b4 ff 90 <0f> 0b 90 e8 9a 50 b4 ff e8 75 f6 fb 02 31 ff 89 c5 89 c6 e8 ba 4b
RSP: 0018:ffff888048cef9b8 EFLAGS: 00010293
RAX: 0000000000000000 RBX: 1ffff1100919df3c RCX: ffffffff81bf96d3
RDX: ffff888019170000 RSI: ffffffff81bf96dd RDI: 0000000000000005
RBP: ffff88801cc39180 R08: 0000000000000001 R09: 0000000000000000
R10: 00000000ffffffff R11: 0000000000000001 R12: ffff888048cefa20
R13: 00000000ffffffff R14: dead000000000100 R15: ffff88801cc39180
FS:  0000000000000000(0000) GS:ffff8880e55dd000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000001b2d72a000 CR3: 000000004549b000 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: 0033:0x7f5682ba5436
Code: Unable to access opcode bytes at 0x7f5682ba540c.
RSP: 002b:00007f56801741a0 EFLAGS: 00010217
RAX: 0000000000000000 RBX: 00007f5682d11f60 RCX: 00007f5682d11f60
RDX: 0000000000000000 RSI: 00007f5682ba542e RDI: 00000000200002c0
RBP: 00007f5682c58f6d R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007ffcb2e62a2f R14: 00007f5680174300 R15: 0000000000022000
 </TASK>
irq event stamp: 723
hardirqs last  enabled at (731): [<ffffffff81541b18>] __up_console_sem+0x78/0x80
hardirqs last disabled at (740): [<ffffffff81541afd>] __up_console_sem+0x5d/0x80
softirqs last  enabled at (666): [<ffffffff813bafcc>] handle_softirqs+0x50c/0x770
softirqs last disabled at (661): [<ffffffff813bb364>] __irq_exit_rcu+0xc4/0x100
---[ end trace 0000000000000000 ]---
EXT4-fs (loop0): unmounting filesystem 00000000-0000-0000-0000-000000000000.
UDC core: USB Raw Gadget: couldn't find an available UDC or it's busy
loop3: detected capacity change from 0 to 1024
misc raw-gadget: fail, usb_gadget_register_driver returned -16
ext4: Unknown parameter '¢mÚᲇç~z½ÂÆV'
loop3: detected capacity change from 0 to 1024
ext4: Unknown parameter '¢mÚᲇç~z½ÂÆV'