diff options
Diffstat (limited to 'sys/kern/subr_rman.c')
| -rw-r--r-- | sys/kern/subr_rman.c | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/sys/kern/subr_rman.c b/sys/kern/subr_rman.c index cfa4983..4352278 100644 --- a/sys/kern/subr_rman.c +++ b/sys/kern/subr_rman.c @@ -138,6 +138,8 @@ rman_init(struct rman *rm) mtx_init(&rman_mtx, "rman head", NULL, MTX_DEF); } + if (rm->rm_start == 0 && rm->rm_end == 0) + rm->rm_end = ~0ul; if (rm->rm_type == RMAN_UNINIT) panic("rman_init"); if (rm->rm_type == RMAN_GAUGE) @@ -162,6 +164,8 @@ rman_manage_region(struct rman *rm, u_long start, u_long end) DPRINTF(("rman_manage_region: <%s> request: start %#lx, end %#lx\n", rm->rm_descr, start, end)); + if (start < rm->rm_start || end > rm->rm_end) + return EINVAL; r = int_alloc_resource(M_NOWAIT); if (r == NULL) return ENOMEM; |
