Author: avg
Date: Mon Aug 19 11:18:36 2019
New Revision: 351213
URL: https://svnweb.freebsd.org/changeset/base/351213
Log:
assert that td_lk_slocks is not leaked upon return from kernel
This is similar to checks for td_sx_slocks and td_rw_rlocks.
Although td_lk_slocks is an implementation detail, it still makes sense
to validate it.
MFC after: 1 week
Sponsored by: Panzura
Modified:
head/sys/kern/subr_trap.c
Modified: head/sys/kern/subr_trap.c
==============================================================================
--- head/sys/kern/subr_trap.c Mon Aug 19 10:48:27 2019 (r351212)
+++ head/sys/kern/subr_trap.c Mon Aug 19 11:18:36 2019 (r351213)
@@ -176,6 +176,9 @@ userret(struct thread *td, struct trapframe *frame)
KASSERT(td->td_sx_slocks == 0,
("userret: Returning with %d sx locks held in shared mode",
td->td_sx_slocks));
+ KASSERT(td->td_lk_slocks == 0,
+ ("userret: Returning with %d lockmanager locks held in shared mode",
+ td->td_lk_slocks));
KASSERT((td->td_pflags & TDP_NOFAULTING) == 0,
("userret: Returning with pagefaults disabled"));
KASSERT(td->td_no_sleeping == 0,
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