target/linux/generic/backport-5.15/883-v6.1-ca8210-Fix-crash-by-zero-initializing-data.patch

   1 From 1e24c54da257ab93cff5826be8a793b014a5dc9c Mon Sep 17 00:00:00 2001
   2 From: Hauke Mehrtens <hauke@hauke-m.de>
   3 Date: Mon, 21 Nov 2022 01:22:01 +0100
   4 Subject: ca8210: Fix crash by zero initializing data
   5
   6 The struct cas_control embeds multiple generic SPI structures and we
   7 have to make sure these structures are initialized to default values.
   8 This driver does not set all attributes. When using kmalloc before some
   9 attributes were not initialized and contained random data which caused
  10 random crashes at bootup.
  11
  12 Fixes: ded845a781a5 ("ieee802154: Add CA8210 IEEE 802.15.4 device driver")
  13 Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de>
  14 Link: https://lore.kernel.org/r/20221121002201.1339636-1-hauke@hauke-m.de
  15 Signed-off-by: Stefan Schmidt <stefan@datenfreihafen.org>
  16 ---
  17  drivers/net/ieee802154/ca8210.c | 2 +-
  18  1 file changed, 1 insertion(+), 1 deletion(-)
  19
  20 --- a/drivers/net/ieee802154/ca8210.c
  21 +++ b/drivers/net/ieee802154/ca8210.c
  22 @@ -927,7 +927,7 @@ static int ca8210_spi_transfer(
  23
  24         dev_dbg(&spi->dev, "%s called\n", __func__);
  25
  26 -       cas_ctl = kmalloc(sizeof(*cas_ctl), GFP_ATOMIC);
  27 +       cas_ctl = kzalloc(sizeof(*cas_ctl), GFP_ATOMIC);
  28         if (!cas_ctl)
  29                 return -ENOMEM;
  30