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| author | kib <kib@FreeBSD.org> | 2012-05-30 13:44:42 +0000 |
|---|---|---|
| committer | kib <kib@FreeBSD.org> | 2012-05-30 13:44:42 +0000 |
| commit | 763886833486f0f77fea580c7dcedf9d4a79deb9 (patch) | |
| tree | 8014c8f0357453aac8d34ccf0ab4651881a8bbb4 /sys/kern/subr_syscall.c | |
| parent | ffa3e6c1973fa6b629d41c955e1f6b7cc85937a2 (diff) | |
| download | FreeBSD-src-763886833486f0f77fea580c7dcedf9d4a79deb9.zip FreeBSD-src-763886833486f0f77fea580c7dcedf9d4a79deb9.tar.gz | |
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
Diffstat (limited to 'sys/kern/subr_syscall.c')
| -rw-r--r-- | sys/kern/subr_syscall.c | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/sys/kern/subr_syscall.c b/sys/kern/subr_syscall.c index 5b48595..5aee684 100644 --- a/sys/kern/subr_syscall.c +++ b/sys/kern/subr_syscall.c @@ -182,6 +182,12 @@ syscallret(struct thread *td, int error, struct syscall_args *sa __unused) 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 |
