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kernel: ca8210: Fix crash by zero initializing data

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This fixes crashes at bootup on pistachio.

Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de>
This commit is contained in:
Hauke Mehrtens 2022-11-20 21:35:54 +01:00 committed by AmadeusGhost
parent ba9d2a90c9
commit 17e7a58be0
2 changed files with 60 additions and 0 deletions
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30
target/linux/generic/pending-5.10/870-ca8210-Fix-crash-by-zero-initializing-data.patch Normal file
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@ -0,0 +1,30 @@
From 1e24c54da257ab93cff5826be8a793b014a5dc9c Mon Sep 17 00:00:00 2001
From: Hauke Mehrtens <hauke@hauke-m.de>
Date: Mon, 21 Nov 2022 01:22:01 +0100
Subject: ca8210: Fix crash by zero initializing data
The struct cas_control embeds multiple generic SPI structures and we
have to make sure these structures are initialized to default values.
This driver does not set all attributes. When using kmalloc before some
attributes were not initialized and contained random data which caused
random crashes at bootup.
Fixes: ded845a781a5 ("ieee802154: Add CA8210 IEEE 802.15.4 device driver")
Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de>
Link: https://lore.kernel.org/r/20221121002201.1339636-1-hauke@hauke-m.de
Signed-off-by: Stefan Schmidt <stefan@datenfreihafen.org>
---
drivers/net/ieee802154/ca8210.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
--- a/drivers/net/ieee802154/ca8210.c
+++ b/drivers/net/ieee802154/ca8210.c
@@ -926,7 +926,7 @@ static int ca8210_spi_transfer(
dev_dbg(&spi->dev, "%s called\n", __func__);
- cas_ctl = kmalloc(sizeof(*cas_ctl), GFP_ATOMIC);
+ cas_ctl = kzalloc(sizeof(*cas_ctl), GFP_ATOMIC);
if (!cas_ctl)
return -ENOMEM;

30
target/linux/generic/pending-5.15/870-ca8210-Fix-crash-by-zero-initializing-data.patch Normal file
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@ -0,0 +1,30 @@
From 1e24c54da257ab93cff5826be8a793b014a5dc9c Mon Sep 17 00:00:00 2001
From: Hauke Mehrtens <hauke@hauke-m.de>
Date: Mon, 21 Nov 2022 01:22:01 +0100
Subject: ca8210: Fix crash by zero initializing data
The struct cas_control embeds multiple generic SPI structures and we
have to make sure these structures are initialized to default values.
This driver does not set all attributes. When using kmalloc before some
attributes were not initialized and contained random data which caused
random crashes at bootup.
Fixes: ded845a781a5 ("ieee802154: Add CA8210 IEEE 802.15.4 device driver")
Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de>
Link: https://lore.kernel.org/r/20221121002201.1339636-1-hauke@hauke-m.de
Signed-off-by: Stefan Schmidt <stefan@datenfreihafen.org>
---
drivers/net/ieee802154/ca8210.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
--- a/drivers/net/ieee802154/ca8210.c
+++ b/drivers/net/ieee802154/ca8210.c
@@ -927,7 +927,7 @@ static int ca8210_spi_transfer(
dev_dbg(&spi->dev, "%s called\n", __func__);
- cas_ctl = kmalloc(sizeof(*cas_ctl), GFP_ATOMIC);
+ cas_ctl = kzalloc(sizeof(*cas_ctl), GFP_ATOMIC);
if (!cas_ctl)
return -ENOMEM;