This is a note to let you know that I've just added the patch titled ca8210: Fix crash by zero initializing data to the 4.19-stable tree which can be found at: http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary The filename of the patch is: ca8210-fix-crash-by-zero-initializing-data.patch and it can be found in the queue-4.19 subdirectory. If you, or anyone else, feels it should not be added to the stable tree, please let <stable@xxxxxxxxxxxxxxx> know about it. commit 4110e85a8fc2aee1614cb9079ca0339221b4a83d Author: Hauke Mehrtens <hauke@xxxxxxxxxx> Date: Mon Nov 21 01:22:01 2022 +0100 ca8210: Fix crash by zero initializing data [ Upstream commit 1e24c54da257ab93cff5826be8a793b014a5dc9c ] 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@xxxxxxxxxx> Link: https://lore.kernel.org/r/20221121002201.1339636-1-hauke@xxxxxxxxxx Signed-off-by: Stefan Schmidt <stefan@xxxxxxxxxxxxxxxxxx> Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx> diff --git a/drivers/net/ieee802154/ca8210.c b/drivers/net/ieee802154/ca8210.c index 7c5db4f73cce..917edb3d04b7 100644 --- a/drivers/net/ieee802154/ca8210.c +++ b/drivers/net/ieee802154/ca8210.c @@ -925,7 +925,7 @@ 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;