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authorkib <kib@FreeBSD.org>2011-10-03 16:58:58 +0000
committerkib <kib@FreeBSD.org>2011-10-03 16:58:58 +0000
commitb0ea63c19aa5ec79a2213d4e275392f42035ac49 (patch)
tree449b84cca2e3fd0d3d43f91dfd1c790c206964bd /sys/kern
parentd02d847434c8ff9cffcce64e4af70a5bfcdac06b (diff)
downloadFreeBSD-src-b0ea63c19aa5ec79a2213d4e275392f42035ac49.zip
FreeBSD-src-b0ea63c19aa5ec79a2213d4e275392f42035ac49.tar.gz
Assert that exiting process does not return to usermode.
Reviewed by: avg, jhb MFC after: 1 week
Diffstat (limited to 'sys/kern')
-rw-r--r--sys/kern/subr_trap.c2
1 files changed, 2 insertions, 0 deletions
diff --git a/sys/kern/subr_trap.c b/sys/kern/subr_trap.c
index d13e487..ba8b66f 100644
--- a/sys/kern/subr_trap.c
+++ b/sys/kern/subr_trap.c
@@ -99,6 +99,8 @@ userret(struct thread *td, struct trapframe *frame)
CTR3(KTR_SYSC, "userret: thread %p (pid %d, %s)", td, p->p_pid,
td->td_name);
+ KASSERT((p->p_flag & P_WEXIT) == 0,
+ ("Exiting process returns to usermode"));
#if 0
#ifdef DIAGNOSTIC
/* Check that we called signotify() enough. */
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