Author: mjg
Date: Sat Aug 1 16:02:32 2020
New Revision: 363767
URL: https://svnweb.freebsd.org/changeset/base/363767
Log:
cred: add more asserts for td_realucred == td_ucred
Modified:
head/sys/kern/kern_prot.c
head/sys/kern/kern_thread.c
Modified: head/sys/kern/kern_prot.c
==============================================================================
--- head/sys/kern/kern_prot.c Sat Aug 1 14:58:43 2020 (r363766)
+++ head/sys/kern/kern_prot.c Sat Aug 1 16:02:32 2020 (r363767)
@@ -1881,7 +1881,8 @@ crunuse(struct thread *td)
{
struct ucred *cr, *crold;
- cr = td->td_ucred;
+ MPASS(td->td_realucred == td->td_ucred);
+ cr = td->td_realucred;
mtx_lock(&cr->cr_mtx);
cr->cr_ref += td->td_ucredref;
td->td_ucredref = 0;
@@ -1897,6 +1898,7 @@ crunuse(struct thread *td)
crold = NULL;
}
mtx_unlock(&cr->cr_mtx);
+ td->td_realucred = NULL;
return (crold);
}
Modified: head/sys/kern/kern_thread.c
==============================================================================
--- head/sys/kern/kern_thread.c Sat Aug 1 14:58:43 2020 (r363766)
+++ head/sys/kern/kern_thread.c Sat Aug 1 16:02:32 2020 (r363767)
@@ -543,6 +543,7 @@ thread_exit(void)
(long)p->p_pid, td->td_name);
SDT_PROBE0(proc, , , lwp__exit);
KASSERT(TAILQ_EMPTY(&td->td_sigqueue.sq_list), ("signal pending"));
+ MPASS(td->td_realucred == td->td_ucred);
/*
* drop FPU & debug register state storage, or any other
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