segfault with macaroons on XRootD 5.6.2

[matyasselmeci]

We have a user that's seeing a segfault in xrootd when it's configured with macaroons. This is their cconfig dump:

cconfig -c /etc/xrootd/xrootd-clustered.cfg
all.adminpath /var/spool/xrootd/var/spool 
all.pidpath /var/run/xrootd/var/run 
all.export /rucio 
xrd.port 1094
xrootd.chksum adler32 
xrd.tls /etc/grid-security/xrd/xrdcert.pem /etc/grid-security/xrd/xrdkey.pem 
xrd.tlsca certdir /etc/grid-security/certificates 
xrootd.tls capable all -data 
xrootd.seclib /usr/lib64/libXrdSec.so 
ofs.tpc logok autorm pgm /etc/xrootd/xrdcp-tpc2.sh 
acc.audit deny 
acc.authdb /etc/xrootd/auth_file 
acc.authrefresh 60 
ofs.authorize 1 
sec.protocol /usr/lib64 gsi -certdir:/etc/grid-security/certificates  -cert:/etc/grid-security/xrd/xrdcert.pem  -key:/etc/grid-security/xrd/xrdkey.pem  -crl:1  -gmapopt:trymap  -gridmap:/etc/grid-security/grid-mapfile  -vomsfun:default 
xrd.protocol http:1094 /usr/lib64/libXrdHttp.so 
http.cadir /etc/grid-security/certificates 
http.cert /etc/grid-security/xrd/xrdcert.pem 
http.key /etc/grid-security/xrd/xrdkey.pem 
http.listingdeny yes 
http.staticpreload http://static/robots.txt /etc/xrootd/robots.txt 
http.desthttps yes 
http.exthandler xrdtpc libXrdHttpTPC.so 
macaroons.secretkey /etc/xrootd/macaroon-secret 
ofs.authlib libXrdMacaroons.so 
http.exthandler xrdmacaroons libXrdMacaroons.so 
http.header2cgi Authorization authz 
http.gridmap /etc/grid-security/grid-mapfile 
http.secxtractor /usr/lib64/libXrdHttpVOMS.so 
all.sitename Jlab 
ofs.authorize 1 
sec.protocol host 
ofs.authdb /etc/xrootd/auth_file 
acc.authrefresh 600 

and the traceback from gdb.

Program received signal SIGSEGV, Segmentation fault.
[Switching to Thread 0x7ffff26fc700 (LWP 24804)]
XrdNetAddrInfo::Name (this=0x0, eName=eName@entry=0x7ffff7ba5c38 "?", eText=eText@entry=0x0) at /usr/src/debug/xrootd/xrootd-5.6.2/src/XrdNet/XrdNetAddrInfo.cc:319
319     if (IP.Addr.sa_family == AF_UNIX) return "localhost";
(gdb)
(gdb)
(gdb) where
#0  XrdNetAddrInfo::Name (this=0x0, eName=eName@entry=0x7ffff7ba5c38 "?", eText=eText@entry=0x0) at /usr/src/debug/xrootd/xrootd-5.6.2/src/XrdNet/XrdNetAddrInfo.cc:319
#1  0x00007ffff7b8814b in XrdAccAccess::Resolve (Entity=Entity@entry=0x7fffe000e438) at /usr/src/debug/xrootd/xrootd-5.6.2/src/XrdAcc/XrdAccAccess.cc:343
#2  0x00007ffff7b88955 in XrdAccAccess::Access (this=0x698aa0, Entity=0x7fffe000e438, path=0x7fffe0030168 "/rucio/dir/testFile", oper=AOP_Any, Env=<optimized out>)
    at /usr/src/debug/xrootd/xrootd-5.6.2/src/XrdAcc/XrdAccAccess.cc:167
#3  0x00007fffef94a9fa in Macaroons::Authz::Access (this=this@entry=0x698e80, Entity=0x7fffe000e438, path=path@entry=0x7fffe0030168 "/rucio/dir/testFile", oper=oper@entry=AOP_Any, env=env@entry=0x0)
    at /usr/src/debug/xrootd/xrootd-5.6.2/src/XrdMacaroons/XrdMacaroonsAuthz.cc:171
#4  0x00007fffef943ade in Macaroons::Handler::GenerateActivities (this=this@entry=0x6be9e0, req=..., resource="/rucio/dir/testFile")
    at /usr/src/debug/xrootd/xrootd-5.6.2/src/XrdMacaroons/XrdMacaroonsHandler.cc:179
#5  0x00007fffef944e26 in Macaroons::Handler::GenerateMacaroonResponse (this=this@entry=0x6be9e0, req=..., resource="/rucio/dir/testFile", other_caveats=std::vector of length 1, capacity 1 = {...},
    validity=validity@entry=10800, oauth_response=oauth_response@entry=false) at /usr/src/debug/xrootd/xrootd-5.6.2/src/XrdMacaroons/XrdMacaroonsHandler.cc:487
#6  0x00007fffef947fae in Macaroons::Handler::ProcessReq (this=0x6be9e0, req=...) at /usr/src/debug/xrootd/xrootd-5.6.2/src/XrdMacaroons/XrdMacaroonsHandler.cc:461
#7  0x00007ffff1ade6bc in XrdHttpReq::ProcessHTTPReq (this=this@entry=0x7fffe000e560) at /usr/src/debug/xrootd/xrootd-5.6.2/src/XrdHttp/XrdHttpReq.cc:917
#8  0x00007ffff1ad6825 in XrdHttpProtocol::Process (this=0x7fffe000e400, lp=<optimized out>) at /usr/src/debug/xrootd/xrootd-5.6.2/src/XrdHttp/XrdHttpProtocol.cc:872
#9  0x00007ffff7877a26 in XrdLinkXeq::DoIt (this=0x7fffe00070e8) at /usr/src/debug/xrootd/xrootd-5.6.2/src/Xrd/XrdLinkXeq.cc:320
#10 0x00007ffff78741d9 in XrdLink::setProtocol (this=0x7fffe00070e8, pp=<optimized out>, runit=<optimized out>, push=<optimized out>) at /usr/src/debug/xrootd/xrootd-5.6.2/src/Xrd/XrdLink.cc:435
#11 0x00007ffff787ae6a in XrdScheduler::Run (this=0x613e60 <XrdGlobal::Sched>) at /usr/src/debug/xrootd/xrootd-5.6.2/src/Xrd/XrdScheduler.cc:406
#12 0x00007ffff787af89 in XrdStartWorking (carg=<optimized out>) at /usr/src/debug/xrootd/xrootd-5.6.2/src/Xrd/XrdScheduler.cc:89
#13 0x00007ffff7806a97 in XrdSysThread_Xeq (myargs=0x64a440) at /usr/src/debug/xrootd/xrootd-5.6.2/src/XrdSys/XrdSysPthread.cc:86
#14 0x00007ffff696eea5 in start_thread () from /lib64/libpthread.so.0
#15 0x00007ffff6697b0d in clone () from /lib64/libc.so.6
(gdb)

any ideas? This is using the xrootd 5.6.2-2.2 RPMs from OSG.