linux-ext4 - [Bug 218822] Delete the file from the upper layer directly, the file will become "Stale"

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Message-ID: <bug-218822-13602-Np5VUZxfFU@https.bugzilla.kernel.org/>
Date: Thu, 09 May 2024 09:05:12 +0000
From: bugzilla-daemon@...nel.org
To: linux-ext4@...r.kernel.org
Subject: [Bug 218822] Delete the file from the upper layer directly, the file
 will become "Stale"

https://bugzilla.kernel.org/show_bug.cgi?id=218822

--- Comment #1 from Squall.Zhou@...ima.com ---
1. The issue has also been reproduced on:
29~22.04.1-Ubuntu SMP PREEMPT_DYNAMIC Thu Apr  4 14:39:20 UTC 2 x86_64 x86_64
x86_64 GNU/Linux 

~:mount -t overlay -o  lowerdir=etc,upperdir=upper,workdir=work overlay etc 
~:~/overlaytest$ touch etc/a 
rm upper/a 
rm etc/a 
rm: cannot remove 'etc/a': Stale file handle 

2. But not reproduced on WSL(Ubuntu 20.04.6)
Squall.Zhou[~/over1]:mkdir etc
mkdir upper
mkdir work
sudo mount -t overlay -o  lowerdir=etc,upperdir=upper,workdir=work overlay etc
sudo touch etc/a
sudo rm upper/a
sudo rm etc/a
rm: cannot remove 'etc/a': No such file or directory
Squall.Zhou[~/over]:uname -a
Linux PC3203 4.4.0-22621-Microsoft #2506-Microsoft Fri Jan 01 08:00:00 PST 2016
x86_64 x86_64 x86_64 GNU/Linux

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