Re: (ITS#7723) slapd crashes on multi core machines if a search request is *immediately* followed by an unbind
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It is not the client loop that is multithreading but the ldap server.
And it is not a misuse of the API but a problem that may be raised by day t= o day network problems.
I've boiled down the problem to a few simple configurations that work (or b= etter, fail ;-) with both 2.4.23 and 2.4.36. A tgz file containing a setup = with start script and testclient is attached. It should be sufficient to re= produce the fault.
The problem occurs only if we use session variable substitution in the rwm = overlay, and only if a search is *immediately* (e.g. caused by network loss= and client timeout) followed by an unbind.
Mit freundlichen Gr=FC=DFen / Kind regards Michael Vishchers Senior System Engineer
7P Solutions & Consulting AG Calor-Emag-Stra=DFe 1 40878 Ratingen
Phone : +49-2102-5354-356 Fax : +49-2102-5354-111 Email : michael.vishchers@7p-group.commailto://michael.vishchers@7P-Grou= p.com Home : www.7p-group.comhttp://www.7P-Group.com
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--_000_96779DE2D69B3E4DB46CA3AEAA8C409D8B0DCCRTGMX02intranetlo_ Content-Type: text/html; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable
<html dir=3D"ltr"> <head> <meta http-equiv=3D"Content-Type" content=3D"text/html; charset=3Diso-8859-= 1"> <style id=3D"owaParaStyle" type=3D"text/css">P {margin-top:0;margin-bottom:= 0;}</style> </head> <body ocsi=3D"0" fpstyle=3D"1"> <div style=3D"direction: ltr;font-family: Tahoma;color: #000000;font-size: = 10pt;">It is not the client loop that is multithreading but the ldap server= .<br> <br> And it is not a misuse of the API but a problem that may be raised by day t= o day network problems.<br> <br> I've boiled down the problem to a few simple configurations that work (or b= etter, fail ;-) with both 2.4.23 and 2.4.36. A tgz file containing a setup = with start script and testclient is attached. It should be sufficient to re= produce the fault. <br> <br> The problem occurs only if we use session variable substitution in the rwm = overlay, and only if a search is *immediately* (e.g. caused by network loss= and client timeout) followed by an unbind.<br> <div><br> <div style=3D"font-family: Tahoma; font-size: 13px;"> <div style=3D"font-family: Arial; font-size: 13px;">Mit freundlichen Gr=FC= =DFen / Kind regards<br> Michael Vishchers<br> Senior System Engineer<br> <br> 7P Solutions & Consulting AG<br> Calor-Emag-Stra=DFe 1<br> 40878 Ratingen<br> <br> Phone : +49-2102-5354-356<br> Fax : +49-2102-5354-111<br> Email : <a href=3D"mailto://michael.vishchers@7P-Group.com" tab= index=3D"0">michael.vishchers@7p-group.com</a><br> Home : <a href=3D"http://www.7P-Group.com" tabindex=3D"0">www.7= p-group.com</a><br> <br> <p class=3D"MsoNormal" style=3D"margin-bottom: 12pt; color: rgb(153, 153, 1= 53);"><font style=3D"color: rgb(192, 192, 192);" size=3D"1"><span style=3D"= font-size: 10pt; font-family: "Arial Narrow","sans-serif&quo= t;;">Sitz der Gesellschaft: K=F6ln<br> Registriergericht: Amtsgericht K=F6ln<br> Handelsregister: HRB 32361<br> Aufsichtsratsvorsitzender: Dr. Kai H=F6hmann<br> Vorstand: Jens Harig (Vorsitzender), Dr. Joachim Philippi<br> USt-ID-Nr.: DE197820124<br> Steuer-Nr.: 215/5917/1764</span></font><b><i><span style=3D""></span></i></= b></p> <p class=3D"MsoNormalCxSpMiddle" style=3D"margin-bottom: 12pt; color: rgb(1= 53, 153, 153);"> <b><i><span style=3D"font-size: 9.5pt; font-family: "Arial Narrow"= ;,"sans-serif";">Eine Bitte: Denken Sie an Ihre Umwelt, bevor Sie= diese E-Mail ausdrucken!</span></i></b><b><span style=3D"font-size: 9.5pt;= font-family: "Arial Narrow","sans-serif";"> </span></b><span style=3D"font-size: 9.5pt;"></span></p> <p class=3D"MsoNormalCxSpMiddle" style=3D"margin-bottom: 12pt; color: rgb(1= 53, 153, 153);"> <b><i><span style=3D"font-size: 28pt; font-family: Webdings;">P</span></i><= /b><i><span style=3D"font-size: 14pt;"> </span></i><i><span style=3D"font-size: 9.5pt; font-family: "Arial Nar= row","sans-serif";" lang=3D"EN-US">Please consider the envir= onment before printing this e-mail</span></i></p> <p class=3D"MsoNormal" style=3D"color: rgb(153, 153, 153);"><span style=3D"= font-size: 8pt; font-family: "Arial Narrow","sans-serif"= ;;">Der Inhalt dieser e-Mail ist ausschlie=DFlich f=FCr den bezeichneten Ad= ressaten bestimmt. Wenn Sie nicht der vorgesehene Adressat dieser e-Mail oder dessen Vertreter sein sollten, beachten Sie bitte, dass jede F= orm der Ver=F6ffentlichung, Vervielf=E4ltigung oder Weitergabe des Inhalts = dieser e-Mail unzul=E4ssig ist. Wir bitten Sie sofort den Absender zu infor= mieren und die E-mail zu l=F6schen.<br> The information contained in this e-mail is intended solely for the address= ee. Access to this e-mail by anyone else is unauthorized. If you are not th= e intended recipient, any form of disclosure, reproduction, distribution or= any action taken or refrained from in reliance on it, is prohibited and may be unlawful. Please notify the se= nder immediately and destroy this e-mail.</span></p> <p class=3D"MsoNormal"> </p> </div> </div> </div> </div> </body> </html>
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