linux-ext4 - [Bug 196405] mkdir mishandles st_nlink in ext4 directory with 64997 subdirectories

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Message-ID: <bug-196405-13602-8qgGFGMIWw@https.bugzilla.kernel.org/>
Date:   Tue, 18 Jul 2017 23:12:58 +0000
From:   bugzilla-daemon@...zilla.kernel.org
To:     linux-ext4@...nel.org
Subject: [Bug 196405] mkdir mishandles st_nlink in ext4 directory with 64997
 subdirectories

https://bugzilla.kernel.org/show_bug.cgi?id=196405

--- Comment #7 from Paul Eggert (eggert@...ucla.edu) ---
Created attachment 257593
  --> https://bugzilla.kernel.org/attachment.cgi?id=257593&action=edit
sample program illustrating how ext4 st_nlink behavior breaks glibc

Run this program in an empty ext4 directory to illustrate the problem: fts will
misbehave and will not find the two files "needle" in the large-directory
haystack.

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