In setup_namespace(), pfn|dax|btt is obtained by calling ndctl_region_get_**_seed(), which may return NULL. So we need to check whether pfn|dax|btt is NULL before accessing them.
Signed-off-by: Zhiqiang Liu <[email protected]> Acked-by: Jeff Moyer <[email protected]> --- ndctl/namespace.c | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/ndctl/namespace.c b/ndctl/namespace.c index e946bb6..631ebdc 100644 --- a/ndctl/namespace.c +++ b/ndctl/namespace.c @@ -549,6 +549,8 @@ static int setup_namespace(struct ndctl_region *region, if (do_setup_pfn(ndns, p)) { struct ndctl_pfn *pfn = ndctl_region_get_pfn_seed(region); + if (!pfn) + return -ENXIO; rc = check_dax_align(ndns); if (rc) @@ -563,6 +565,8 @@ static int setup_namespace(struct ndctl_region *region, ndctl_pfn_set_namespace(pfn, NULL); } else if (p->mode == NDCTL_NS_MODE_DEVDAX) { struct ndctl_dax *dax = ndctl_region_get_dax_seed(region); + if (!dax) + return -ENXIO; rc = check_dax_align(ndns); if (rc) @@ -577,6 +581,8 @@ static int setup_namespace(struct ndctl_region *region, ndctl_dax_set_namespace(dax, NULL); } else if (p->mode == NDCTL_NS_MODE_SECTOR) { struct ndctl_btt *btt = ndctl_region_get_btt_seed(region); + if (!btt) + return -ENXIO; /* * Handle the case of btt on a pmem namespace where the -- 1.8.3.1 _______________________________________________ Linux-nvdimm mailing list -- [email protected] To unsubscribe send an email to [email protected]
