EOS crash in XrdSecProtocolgsi::Authenticate

[ljanyst]

error: received signal 11:
/usr/lib64/libXrdEosMgm.so(xrdmgmofs_stacktrace(int) 0x44)[0x2b64a43ad9b4]
/lib64/libc.so.6[0x36bc4302d0]
/usr/lib64/libXrdSecgsi.so(XrdSecProtocolgsi::Authenticate(XrdSecBuffer*, XrdSecBuffer**, XrdOucErrInfo*) 0x58)[0x2b64a3c23a78]
/usr//bin/xrootd(XrdXrootdProtocol::do_Auth() 0x123)[0x426233]
/usr/lib64/libXrdUtils.so.1(XrdLink::DoIt() 0x30)[0x362144f5a0]
/usr/lib64/libXrdUtils.so.1(XrdScheduler::Run() 0xd6)[0x3621453916]
/usr/lib64/libXrdUtils.so.1(XrdStartWorking(void*) 0x9)[0x3621453aa9]
/usr/lib64/libXrdUtils.so.1(XrdSysThread_Xeq 0x3f)[0x362142019f]
/lib64/libpthread.so.0[0x36bcc0683d]
/lib64/libc.so.6(clone 0x6d)[0x36bc4d526d]
#########################################################################
# stack trace exec=xrootd pid=26523 what='thread apply all bt'
#########################################################################
[..]
# warning: failed to parse the thread responsible for signal [0 0 4294967295]n#########################################################################
141010 09:44:24 17651 Scalla is starting. . .

The problem seems to be here: https://github.com/xrootd/xrootd/blob/v3.3.6-4.CERN/src/XrdSecgsi/XrdSecProtocolgsi.cc#L1648

With hs containing garbage.

Reference: https://its.cern.ch/jira/browse/EOS-1086

[abh3]

Is this still a problem?

[ljanyst]

We hit it only once so far, so it's not urgent, but the issue has not been solved.

[abh3]

Hopefully, we can get a core file when it happens again. Even a stack trace with line numbers would be useful.

[ljanyst]

You can derive it from the offsets. It happens here: https://github.com/xrootd/xrootd/blob/v3.3.6-4.CERN/src/XrdSecgsi/XrdSecProtocolgsi.cc#L1648

[abh3]

Yes, I saw that. So, obviously the hs pointer is wrong. Here a core file would help.

[ljanyst]

It may be a race. This is EOS namespace, the core the core is >80GB.

[abh3]

Apparently, there have been no additional crashes since this report. So, I am closing it. We can reopen if this occurs again.