[Date Prev][Date Next] [Thread Prev][Thread Next] [Date Index] [Thread Index]

Bug#748341: marked as done (SIGPIPE handling in atfork())

Your message dated Wed, 16 Nov 2022 01:20:11 +0000
with message-id <E1ov763-0016tp-7a@fasolo.debian.org>
and subject line Bug#1024140: Removed package(s) from unstable
has caused the Debian Bug report #748341,
regarding SIGPIPE handling in atfork()
to be marked as done.

This means that you claim that the problem has been dealt with.
If this is not the case it is now your responsibility to reopen the
Bug report if necessary, and/or fix the problem forthwith.

(NB: If you are a system administrator and have no idea what this
message is talking about, this may indicate a serious mail system
misconfiguration somewhere. Please contact owner@bugs.debian.org
immediately.)


-- 
748341: https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=748341
Debian Bug Tracking System
Contact owner@bugs.debian.org with problems
--- Begin Message --- 
Package: libnss-ldap
Version: 264-2.5

If a process calls fork() and SIGPIPE was blocked, the atfork()
handler in the child process failed to catch the SIGPIPE during the
call to  do_close_no_unbind(). So that, the SIGPIPE will be eventually
delivered when the child unblocks signals (and usually this makes
child process die).

I found someone fixed it patching to unblock the signal before calling
do_close_no_unbind() and restore the original sigmask afterwards:

diff -up nss_ldap/ldap-nss.c nss_ldap/ldap-nss.c
--- nss_ldap/ldap-nss.c 2009-12-07 20:57:33.000000000 -0500
+++ nss_ldap/ldap-nss.c 2009-12-07 20:58:56.000000000 -0500
@@ -532,8 +532,13 @@
 static void
 do_atfork_child (void)
 {
+  sigset_t unblock, mask;
   debug ("==> do_atfork_child");
+  sigemptyset(&unblock);
+  sigaddset(&unblock, SIGPIPE);
+  sigprocmask(SIG_UNBLOCK, &unblock, &mask);
   do_close_no_unbind ();
+  sigprocmask(SIG_SETMASK, &mask, NULL);
   _nss_ldap_leave ();
   debug ("<== do_atfork_child");
 }

Is it possible to apply that patch to the package?

__
Marcello Blancasio

--- End Message ---
--- Begin Message --- 
Version: 265-6+rm

Dear submitter,

as the package libnss-ldap has just been removed from the Debian archive
unstable we hereby close the associated bug reports.  We are sorry
that we couldn't deal with your issue properly.

For details on the removal, please see https://bugs.debian.org/1024140

The version of this package that was in Debian prior to this removal
can still be found using http://snapshot.debian.org/.

Please note that the changes have been done on the master archive and
will not propagate to any mirrors until the next dinstall run at the
earliest.

This message was generated automatically; if you believe that there is
a problem with it please contact the archive administrators by mailing
ftpmaster@ftp-master.debian.org.

Debian distribution maintenance software
pp.
Scott Kitterman (the ftpmaster behind the curtain)

--- End Message ---
Reply to: