diff options
| author | Dag-Erling Smørgrav <des@FreeBSD.org> | 2025-12-05 14:57:37 +0000 |
|---|---|---|
| committer | Dag-Erling Smørgrav <des@FreeBSD.org> | 2025-12-05 14:57:37 +0000 |
| commit | 4c2295c15860e70c8bd3f05f9229d2fc40dfd50d (patch) | |
| tree | b6d6b744c50c02e63faeea120234460a4388c43c | |
| parent | 27ff0bbcfd27df588d3f486cb21180a26031b889 (diff) | |
bus: Return 0 if reading an ivar fails
In the non-INVARIANTS case, return 0 rather than stack garbage if
reading an ivar fails (in the INVARIANTS case, we still panic).
MFC after: 1 week
Sponsored by: Klara, Inc.
Sponsored by: NetApp, Inc.
Reviewed by: jhb
Differential Revision: https://reviews.freebsd.org/D54078
| -rw-r--r-- | sys/sys/bus.h | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/sys/sys/bus.h b/sys/sys/bus.h index e0c6c590ce8d..86afc53da562 100644 --- a/sys/sys/bus.h +++ b/sys/sys/bus.h @@ -933,7 +933,7 @@ DECLARE_MODULE(_name##_##busname, _name##_##busname##_mod, \ static __inline type \ varp ## _get_ ## var(device_t dev) \ { \ - uintptr_t v; \ + uintptr_t v = 0; \ int e __diagused; \ e = BUS_READ_IVAR(device_get_parent(dev), dev, \ ivarp ## _IVAR_ ## ivar, &v); \ |