Commit b9456371 authored Jan 08, 2009 by David Howells Committed by James Morris Jan 08, 2009

CRED: Fix commit_creds() on a process that has no mm



Fix commit_creds()'s handling of a process that has no mm (such as one that is
calling or has called daemonize()).  commit_creds() should check to see if
task->mm is not NULL before calling set_dumpable() on it.

Reported-by: Jiri Slaby <jirislaby@gmail.com>
Signed-off-by: David Howells <dhowells@redhat.com>
Signed-off-by: James Morris <jmorris@namei.org>

parent 9e42d0cf

kernel/cred.c

+2 −1

Original line number	Diff line number	Diff line
		@@ -372,6 +372,7 @@ int commit_creds(struct cred *new)
		old->fsuid != new->fsuid \|\|
		old->fsgid != new->fsgid \|\|
		!cap_issubset(new->cap_permitted, old->cap_permitted)) {
		if (task->mm)
		set_dumpable(task->mm, suid_dumpable);
		task->pdeath_signal = 0;
		smp_wmb();