From: Yuntao Wang ytcoode@gmail.com
[ Upstream commit e3f577830ce216b0ca21d4750cbbd64cfc21efff ]
The for loop does not iterate over the last element of the node_to_pxm_map array. This could lead to a conflict between the final fake_pxm value and the existing pxm values. That is, the final fake_pxm value can not be guaranteed to be an unused pxm value.
While at it, fix up white space in slit_valid().
Signed-off-by: Yuntao Wang ytcoode@gmail.com [ rjw: Changelog edits ] Signed-off-by: Rafael J. Wysocki rafael.j.wysocki@intel.com Signed-off-by: Sasha Levin sashal@kernel.org --- drivers/acpi/numa/srat.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/drivers/acpi/numa/srat.c b/drivers/acpi/numa/srat.c index 12f330b0eac0..b57de78fbf14 100644 --- a/drivers/acpi/numa/srat.c +++ b/drivers/acpi/numa/srat.c @@ -183,7 +183,7 @@ static int __init slit_valid(struct acpi_table_slit *slit) int i, j; int d = slit->locality_count; for (i = 0; i < d; i++) { - for (j = 0; j < d; j++) { + for (j = 0; j < d; j++) { u8 val = slit->entry[d*i + j]; if (i == j) { if (val != LOCAL_DISTANCE) @@ -532,7 +532,7 @@ int __init acpi_numa_init(void) */
/* fake_pxm is the next unused PXM value after SRAT parsing */ - for (i = 0, fake_pxm = -1; i < MAX_NUMNODES - 1; i++) { + for (i = 0, fake_pxm = -1; i < MAX_NUMNODES; i++) { if (node_to_pxm_map[i] > fake_pxm) fake_pxm = node_to_pxm_map[i]; }