svn commit: r303197 - stable/11/sys/kern

[Konstantin Belousov]

Author: kib
Date: Fri Jul 22 17:34:58 2016
New Revision: 303197
URL: https://svnweb.freebsd.org/changeset/base/303197

Log:
  MFC r302919:
  In ptrace_vm_entry(), do not call vmspace_free() while owning a vm
  object lock.
  
  Approved by:	re (gjb)

Modified:
  stable/11/sys/kern/sys_process.c
Directory Properties:
  stable/11/   (props changed)

Modified: stable/11/sys/kern/sys_process.c
==============================================================================
--- stable/11/sys/kern/sys_process.c	Fri Jul 22 17:34:28 2016	(r303196)
+++ stable/11/sys/kern/sys_process.c	Fri Jul 22 17:34:58 2016	(r303197)
@@ -433,7 +433,6 @@ ptrace_vm_entry(struct thread *td, struc
 	} while (0);
 
 	vm_map_unlock_read(map);
-	vmspace_free(vm);
 
 	pve->pve_fsid = VNOVAL;
 	pve->pve_fileid = VNOVAL;
@@ -478,6 +477,7 @@ ptrace_vm_entry(struct thread *td, struc
 				free(freepath, M_TEMP);
 		}
 	}
+	vmspace_free(vm);
 	if (error == 0)
 		CTR3(KTR_PTRACE, "PT_VM_ENTRY: pid %d, entry %d, start %p",
 		    p->p_pid, pve->pve_entry, pve->pve_start);