From: Hauke Mehrtens Date: Sun, 20 Nov 2022 20:35:54 +0000 (+0100) Subject: kernel: ca8210: Fix crash by zero initializing data X-Git-Tag: v22.03.3~61 X-Git-Url: http://git.lede-project.org./?a=commitdiff_plain;h=282dd271ad73892fbe57062a62f4db5d09a0550b;p=openwrt%2Fstaging%2Fhauke.git kernel: ca8210: Fix crash by zero initializing data This fixes crashes at bootup on pistachio. Signed-off-by: Hauke Mehrtens (cherry picked from commit 48025b8ac9c62ead241ea1daf1092993fb94aeac) --- diff --git a/target/linux/generic/pending-5.10/870-ca8210-Fix-crash-by-zero-initializing-data.patch b/target/linux/generic/pending-5.10/870-ca8210-Fix-crash-by-zero-initializing-data.patch new file mode 100644 index 0000000000..3f14988d9a --- /dev/null +++ b/target/linux/generic/pending-5.10/870-ca8210-Fix-crash-by-zero-initializing-data.patch @@ -0,0 +1,30 @@ +From 1e24c54da257ab93cff5826be8a793b014a5dc9c Mon Sep 17 00:00:00 2001 +From: Hauke Mehrtens +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 +Link: https://lore.kernel.org/r/20221121002201.1339636-1-hauke@hauke-m.de +Signed-off-by: Stefan Schmidt +--- + 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; +