High Sierra Crashing sometimes when Debugging

[psclklnk]

Hey there,

recently I debugged my application that uses the SCTP_NKE library. Resuming the application after halt at a breakpoint, the system crashed. After it rebooted, I read the error report and especially the error message:

assertion failed: (sb->sb_flags & SB_LOCK) || (so->so_state & SS_DEFUNCT) || (so->so_flags1 & SOF1_DEFUNCTINPROG), file: /BuildRoot/Library/Caches/com.apple.xbs/Sources/xnu/xnu-4570.71.3/bsd/kern/uipc_socket2.c

Now because of the assertion is related to sockets and since the process that uses the SCTP library provoked the crash (darias_xtask), I thought that this has maybe something to do with the SCTP library. I also tried provoking the system crash by redoing the debugging steps - but without luck. So my guess is that it either has nothing to do with the SCTP library after all or the error only occurs in very specific scenarios. Nevertheless, I thought I'd share this with you (and especially the full error report) so that you can have a look at it if you want to.

Feel free to close this issue if - with the information provided - it is not clear that the problem arises from the SCTP library. If I find a way to repeatedly provoke the system crash I'll let you now.

Best,
Pascal
crash-report-sctp.txt

[psclklnk]

I managed to make the system crash again - however this time I was not debugging. Again here is the crash dump - hope that this helps
crash-report-sctp1.txt

[tuexen]

Can you add keepsyms=1 to your boot parameters, which should result in symbolic names in the backtrace? That might help...