loop6: detected capacity change from 0 to 9
FAT-fs (loop6): Invalid FSINFO signature: 0xcd39a09d, 0x61417272 (sector = 1)
------------[ cut here ]------------
WARNING: fs/namespace.c:1434 at mntput_no_expire+0x78e/0xbe0, CPU#0: syz-executor.3/4172
Modules linked in:
CPU: 0 UID: 0 PID: 4172 Comm: syz-executor.3 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:ffff888036d5fbd0 EFLAGS: 00010293
RAX: 0000000000000000 RBX: 1ffff11006dabf7f RCX: ffffffff81bf96d3
RDX: ffff888015fe5280 RSI: ffffffff81bf96dd RDI: 0000000000000005
RBP: ffff88801e2eb500 R08: 0000000000000001 R09: 0000000000000000
R10: 00000000ffffffff R11: 0000000000000001 R12: ffff888036d5fc38
R13: 00000000ffffffff R14: dead000000000100 R15: ffff88801e2eb500
FS:  0000000000000000(0000) GS:ffff8880e55dd000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f2c6a5fc030 CR3: 000000003d605000 CR4: 0000000000350ef0
Call Trace:
 <TASK>
 namespace_unlock+0x57d/0x810
 put_mnt_ns+0xf5/0x120
 free_nsproxy+0x3a/0x400
 switch_task_namespaces+0xe2/0x100
 do_exit+0x841/0x2970
 do_group_exit+0xd3/0x2a0
 __x64_sys_exit_group+0x3e/0x50
 x64_sys_call+0x18c5/0x18d0
 do_syscall_64+0xbf/0x360
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fb7725f3b19
Code: Unable to access opcode bytes at 0x7fb7725f3aef.
RSP: 002b:00007ffcec2692f8 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7
RAX: ffffffffffffffda RBX: 0000000000000007 RCX: 00007fb7725f3b19
RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000000000000043
RBP: 0000000000000000 R08: 0000000000000014 R09: 0000000000000007
R10: 0000000000000000 R11: 0000000000000246 R12: 00007fb77264e0c3
R13: 0000000000000000 R14: 000000000000000d R15: 00007ffcec2694e0
 </TASK>
irq event stamp: 156001
hardirqs last  enabled at (156009): [<ffffffff81541b18>] __up_console_sem+0x78/0x80
hardirqs last disabled at (156018): [<ffffffff81541afd>] __up_console_sem+0x5d/0x80
softirqs last  enabled at (155782): [<ffffffff813bafcc>] handle_softirqs+0x50c/0x770
softirqs last disabled at (155775): [<ffffffff813bb364>] __irq_exit_rcu+0xc4/0x100
---[ end trace 0000000000000000 ]---
FAT-fs (loop6): FAT read failed (blocknr 32)
loop4: detected capacity change from 0 to 736
FAT-fs (loop2): Invalid FSINFO signature: 0xcd39a09d, 0x61417272 (sector = 1)
FAT-fs (loop6): Invalid FSINFO signature: 0xcd39a09d, 0x61417272 (sector = 1)
loop5: detected capacity change from 0 to 240
isofs_fill_super: root inode is not a directory. Corrupted media?
loop5: detected capacity change from 0 to 256
loop5: detected capacity change from 0 to 240
isofs_fill_super: root inode is not a directory. Corrupted media?
loop5: detected capacity change from 0 to 256
loop6: detected capacity change from 0 to 9
isofs_fill_super: root inode is not a directory. Corrupted media?
FAT-fs (loop6): Invalid FSINFO signature: 0xcd39a09d, 0x61417272 (sector = 1)
loop4: detected capacity change from 0 to 736
FAT-fs (loop6): FAT read failed (blocknr 32)
FAT-fs (loop6): Invalid FSINFO signature: 0xcd39a09d, 0x61417272 (sector = 1)
isofs_fill_super: root inode is not a directory. Corrupted media?
Bluetooth: hci6: command 0x0406 tx timeout
Bluetooth: hci1: command 0x0406 tx timeout
Bluetooth: hci7: command 0x0406 tx timeout
Bluetooth: hci2: command 0x0406 tx timeout
Bluetooth: hci4: command 0x0406 tx timeout
Bluetooth: hci5: command 0x0406 tx timeout