How to fix "address space is already occupied" error on fetch/commit?

Question

Started recently, basically every time I try to fetch or commit it gives me this weird error. It'll continuously try to "refetch/recommit" until I give up and CtrlC.

C:\cygwin\home\git\new_trunk>git sf
      1 [main] perl 760 child_info_fork::abort: address space needed by 'cygreadline7.dll' (0x960000) is already occupied

C:\cygwin\home\git\new_trunk>git svn dcommit
      1 [main] perl 2672 child_info_fork::abort: address space needed by 'cygreadline7.dll' (0x980000) is already occupied

Any idea why this is happening?

Answer 1

Rebasing my Cygwin install solved this for me. I followed the doc Rebaseall, running dash as admin from Windows Explorer and then issuing the following:

/usr/bin/rebaseall -v

P.S.: No Cygwin service should be running for this to work.

Answer 2

Take a look at this Cygwin FAQ section and this too. In my case, disabling Avast's Behavior and Filesystem Realtime shields and then restarting Cygwin was the answer.

So, probably, you are running windows programs that hooks their DLLs into forked processes, disrupting addresses and thus causing fork to malfunction.

Answer 3

I had this same fork() problem when my virus scanner, Symantec Endpoint Protection, was upgraded to 64-bit, but I was still running the 32-bit version of Cygwin. 'Rebaseall' didn't help. Upgrading to the 64-bit version of Cygwin has fixed the problem for me.