Dan Riley

> One gets 10 core on lxplus8-arm ( It's a (partion of a ) Neoverse N1) Probably won’t reproduce. The Cavium cores at the openlab seem to be much more...

We are still seeing this exception, and there's some circumstantial evidence that this issue and #42025 could be related.

> @makortel can you confirm something I had not realised until now ? > > * the thread that actually caused the crash calls `sig_dostack_then_abort` > * (most of) the...

> @pcanal it looks like it happens during the call to `TDirectoryFile::WriteKeys` The segfault is in `TDirectoryFile::WriteKeys()`, but that's during shutdown after throwing a fatal error. The fatal errors come...

Here's the traceback up to the point where `TObject::Error()` gets called: ``` #3 0x00007fc02925c39c in TObject::Error(char const*, char const*, ...) const () from /cvmfs/cms.cern.ch/slc7_amd64_gcc10/cms/cmssw-patch/CMSSW_12_4_11_patch1/external/slc7_amd64_gcc10/lib/libCore.so #4 0x00000000004309d5 in TBufferFile::SetByteCount (this=0x7fc01add10c0, cntpos=243,...

> Thanks @dan131riley. In `RootOutputFile::finishEndFile()`, would you be able to tell which of the `treePointers_[i]` was called? Appears to be the "Events" tree.

I don't yet have a clean `Events->Print("")`, but I can say that the number of baskets is a few hundred, definitely not 50 million. Two pieces of evidence also suggest...

Looking at a full log with the local input file, there is an exception ``` ----- Begin Fatal Exception 28-Nov-2022 16:11:41 EST----------------------- An exception of category 'FatalRootError' occurred while [0]...

To reproduce , set up a CMSSW_12_4_11_patch1 area and use `cmsRun /uscms_data/d2/dsr/issue-40132/crash1.py`. However, this will run up against the LPC node virtual memory limits, so you'll need a system with...

> I'm wondering if the sorting criteria for a `CTPPSPixelRecHit` has gone _bad_ , i.e. some value used in the sort is not physical. The sort is > > [cmssw/DataFormats/CTPPSReco/interface/CTPPSPixelRecHit.h](https://github.com/cms-sw/cmssw/blob/f79df5782941b39308cf042d779265a765c51b08/DataFormats/CTPPSReco/interface/CTPPSPixelRecHit.h#L70)...