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Assert that system calls do not leak a pinned thread (via sched_pin()) to

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userland.
This commit is contained in:
John Baldwin 2012-08-22 20:02:42 +00:00
parent dda66918e6
commit 7e690c1f79
1 changed files with 3 additions and 0 deletions
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3
sys/kern/subr_syscall.c
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@ -188,6 +188,9 @@ syscallret(struct thread *td, int error, struct syscall_args *sa __unused)
KASSERT((td->td_pflags & TDP_NOSLEEPING) == 0, KASSERT((td->td_pflags & TDP_NOSLEEPING) == 0,
("System call %s returning with sleep disabled", ("System call %s returning with sleep disabled",
syscallname(p, sa->code))); syscallname(p, sa->code)));
KASSERT(td->td_pinned == 0,
("System call %s returning with pinned thread",
syscallname(p, sa->code)));
/* /*
* Handle reschedule and other end-of-syscall issues * Handle reschedule and other end-of-syscall issues