4.8-stable review patch. If anyone has any objections, please let me know.
------------------
From: Janosch Frank <fran...@linux.vnet.ibm.com>
commit 45c7ee43a5184ddbff652ee0d2e826f86f1b616b upstream.
Diag224 requires a page-aligned 4k buffer to store the name table
into. kmalloc does not guarantee page alignment, hence we replace it
with __get_free_page for the buffer allocation.
Reported-by: Michael Holzheu <holz...@linux.vnet.ibm.com>
Signed-off-by: Janosch Frank <fran...@linux.vnet.ibm.com>
Reviewed-by: Cornelia Huck <cornelia.h...@de.ibm.com>
Signed-off-by: Christian Borntraeger <borntrae...@de.ibm.com>
Signed-off-by: Greg Kroah-Hartman <gre...@linuxfoundation.org>
---
arch/s390/kvm/sthyi.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
--- a/arch/s390/kvm/sthyi.c
+++ b/arch/s390/kvm/sthyi.c
@@ -315,7 +315,7 @@ static void fill_diag(struct sthyi_sctns
if (r < 0)
goto out;
- diag224_buf = kmalloc(PAGE_SIZE, GFP_KERNEL | GFP_DMA);
+ diag224_buf = (void *)__get_free_page(GFP_KERNEL | GFP_DMA);
if (!diag224_buf || diag224(diag224_buf))
goto out;
@@ -378,7 +378,7 @@ static void fill_diag(struct sthyi_sctns
sctns->par.infpval1 |= PAR_WGHT_VLD;
out:
- kfree(diag224_buf);
+ free_page((unsigned long)diag224_buf);
vfree(diag204_buf);
}
