linux-ext4 - [Bug 202879] Segmentation fault while running crafted program

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Message-ID: <bug-202879-13602-GsmLcUB29t@https.bugzilla.kernel.org/>
Date:   Wed, 13 Mar 2019 17:41:33 +0000
From:   bugzilla-daemon@...zilla.kernel.org
To:     linux-ext4@...r.kernel.org
Subject: [Bug 202879] Segmentation fault while running crafted program

https://bugzilla.kernel.org/show_bug.cgi?id=202879

Theodore Tso (tytso@....edu) changed:

           What    |Removed                     |Added
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                 CC|                            |tytso@....edu

--- Comment #5 from Theodore Tso (tytso@....edu) ---
I assume LKL is "Linux Kernel Library", so this is trying to run the ext4 file
system executing the system calls found in poc-01.c in userspace?

Are there instructions so we can build the ext4_combined from source?  That's
going to be needed if we are going to be able to run the binary under a
debugger, and versus a patched kernel to verify the fix.

Also, can you give us a stack dump so we might have some kind of hint what's
going on?

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