svn commit: r236309 - head/sys/kern
Konstantin Belousov
kib at FreeBSD.org
Wed May 30 13:44:43 UTC 2012
Author: kib
Date: Wed May 30 13:44:42 2012
New Revision: 236309
URL: http://svn.freebsd.org/changeset/base/236309
Log:
Assert that TDP_NOFAULTING and TDP_NOSPEEPING thread flags do not leak
when thread returns from a syscall to usermode.
Tested by: pho
MFC after: 1 week
Modified:
head/sys/kern/subr_syscall.c
Modified: head/sys/kern/subr_syscall.c
==============================================================================
--- head/sys/kern/subr_syscall.c Wed May 30 13:33:27 2012 (r236308)
+++ head/sys/kern/subr_syscall.c Wed May 30 13:44:42 2012 (r236309)
@@ -182,6 +182,12 @@ syscallret(struct thread *td, int error,
KASSERT(td->td_locks == 0,
("System call %s returning with %d locks held",
syscallname(p, sa->code), td->td_locks));
+ KASSERT((td->td_pflags & TDP_NOFAULTING) == 0,
+ ("System call %s returning with pagefaults disabled",
+ syscallname(p, sa->code)));
+ KASSERT((td->td_pflags & TDP_NOSLEEPING) == 0,
+ ("System call %s returning with sleep disabled",
+ syscallname(p, sa->code)));
/*
* Handle reschedule and other end-of-syscall issues
More information about the svn-src-all
mailing list