Created attachment 593480 [details]
error output from id when there is a very long line in /etc/group

Description of problem:
A long line in /etc/group will cause all calls to initgroup() to fail.  This is a fixed bug in upstream.

Version-Release number of selected component (if applicable):
Verified on 2.14.90-24.fc16.7, but I think any 2.14 glibc has the bug.

How reproducible:
always

Steps to Reproduce:
1. create a group entry that is longer than 26000 chars
2. run something that does initgroups(), id will work

  
Actual results:
failure with error output attached

Expected results:
initgroups() to work

Additional info:
commit id ae1bc2fa1c58b13ffa83483c24e547148762e24f upstream fixes this.  It's a very simple patch: realloc() is being given the wrong parameter for the new buffer size.