__ext4_find_entry+0x41b/0x1060
 ext4_get_parent+0x11f/0x440
 reconnect_path+0x1de/0x750
 exportfs_decode_fh_raw+0x56a/0x840
------------[ cut here ]------------
WARNING: fs/namespace.c:1434 at mntput_no_expire+0x78e/0xbe0, CPU#0: syz-executor.0/111
Modules linked in:
CPU: 0 UID: 0 PID: 111 Comm: syz-executor.0 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:ffff8880168e79b8 EFLAGS: 00010293
RAX: 0000000000000000 RBX: 1ffff11002d1cf3c RCX: ffffffff81bf96d3
RDX: ffff888015713700 RSI: ffffffff81bf96dd RDI: 0000000000000005
RBP: ffff88801648efc0 R08: 0000000000000001 R09: 0000000000000000
R10: 00000000ffffffff R11: 0000000000000001 R12: ffff8880168e7a20
R13: 00000000ffffffff R14: dead000000000100 R15: ffff88801648efc0
FS:  0000000000000000(0000) GS:ffff8880e55dd000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000000001ffffe40 CR3: 0000000035967000 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: 0033:0x0
Code: Unable to access opcode bytes at 0xffffffffffffffd6.
RSP: 002b:000000002000021c EFLAGS: 00010217
RAX: 0000000000000000 RBX: 00007f3fb312af60 RCX: 00007f3fb3017b19
RDX: 0000000000000000 RSI: 0000000000000058 RDI: 0000000020000240
RBP: 00007f3fb3071f6d R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007ffe915885af R14: 00007f3fb058d300 R15: 0000000000022000
 </TASK>
irq event stamp: 1477
hardirqs last  enabled at (1485): [<ffffffff81541b18>] __up_console_sem+0x78/0x80
hardirqs last disabled at (1494): [<ffffffff81541afd>] __up_console_sem+0x5d/0x80
softirqs last  enabled at (1510): [<ffffffff813bafcc>] handle_softirqs+0x50c/0x770
softirqs last disabled at (1503): [<ffffffff813bb364>] __irq_exit_rcu+0xc4/0x100
---[ end trace 0000000000000000 ]---