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

* [Buildroot] [Bug 13016] New: When fcntl with F_SETFL is called from vsftpd functions, it hangs during file request from the client
@ 2020-06-22  4:51 bugzilla at busybox.net
  2024-06-15 14:52 ` [Buildroot] [Bug 13016] " bugzilla
  0 siblings, 1 reply; 2+ messages in thread
From: bugzilla at busybox.net @ 2020-06-22  4:51 UTC (permalink / raw)
  To: buildroot

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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