svn commit: r298842 - head/lib/libkvm

[Garrett Cooper]

Author: ngie
Date: Sat Apr 30 09:32:19 2016
New Revision: 298842
URL: https://svnweb.freebsd.org/changeset/base/298842

Log:
  Don't leak PML4 in _amd64_initvtop(..) if kvm_read2(..) fails
  
  MFC after: 1 week
  Reported by: Coverity
  CID: 1341474
  Sponsored by: EMC / Isilon Storage Division

Modified:
  head/lib/libkvm/kvm_amd64.c

Modified: head/lib/libkvm/kvm_amd64.c
==============================================================================
--- head/lib/libkvm/kvm_amd64.c	Sat Apr 30 09:31:01 2016	(r298841)
+++ head/lib/libkvm/kvm_amd64.c	Sat Apr 30 09:32:19 2016	(r298842)
@@ -159,6 +159,7 @@ _amd64_initvtop(kvm_t *kd)
 	}
 	if (kvm_read2(kd, pa, PML4, AMD64_PAGE_SIZE) != AMD64_PAGE_SIZE) {
 		_kvm_err(kd, kd->program, "cannot read KPML4phys");
+		free(PML4);
 		return (-1);
 	}
 	kd->vmst->PML4 = PML4;