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New: When fcntl with F_SETFL is called from vsftpd functions, it hangs during file request from the client

Buildroot bugzilla at busybox.net 1 participant 2 messages Jun 22, 2020 – Jun 15, 2024

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https://bugs.busybox.net/show_bug.cgi?id=13016

Bug ID: 13016
Summary: When fcntl with F_SETFL is called from vsftpd
functions, it hangs during file request from the client
Product: buildroot
Version: 2020.02.3
Hardware: All
OS: Linux
Status: NEW
Severity: normal
Priority: P5
Component: Other
Assignee: unassigned at buildroot.uclibc.org
Reporter: prabhusannachi at gmail.com
CC: buildroot at uclibc.org
Target Milestone: ---

Created attachment 8511
--> https://bugs.busybox.net/attachment.cgi?id=8511&action=edit
This patch allows fcntl with F_SETFL and no filters.

The fcntl function with F_SETFL is called from various portion of the vsftpd to activate and deactivate block on the file, hangs when client request a file from the server. This happens when seccomp_sandbox is enabled in the configuration.
vsftpd version is 3.0.3

Similar issue has been addressed on 3.0.2 and fixed on other distribution.

Reference:
https://build.opensuse.org/package/view_file/SUSE:SLE-12-SP1:GA/vsftpd.2254/vsftpd-enable-fcntl-f_setfl.patch?expand=1

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[Buildroot] [Bug 13016] When fcntl with F_SETFL is called from vsftpd functions, it hangs during file request from the client

https://bugs.busybox.net/show_bug.cgi?id=13016

Yann E. MORIN <[email protected]> changed:

What |Removed |Added
----------------------------------------------------------------------------

         Resolution|---                         |MOVED
                 CC|                            |[email protected]
             Status|NEW                         |RESOLVED

--- Comment #1 from Yann E. MORIN <[email protected]> --- Thank you for your report.

The issue tracker for the Buildroot project has been moved to the Gitlab.com issue tracker:
https://gitlab.com/buildroot.org/buildroot/-/issues

We are taking this opportunity to close old issues in this old tracker. If you believe your issue is still relevant, please open one in the new issue tracker.

Thank you!

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