linux-stable/drivers/fsi
Christophe JAILLET 553541c453 fsi: Aspeed: Fix a potential double free
[ Upstream commit 83ba7e895d ]

A struct device can never be devm_alloc()'ed.
Here, it is embedded in "struct fsi_master", and "struct fsi_master" is
embedded in "struct fsi_master_aspeed".

Since "struct device" is embedded, the data structure embedding it must be
released with the release function, as is already done here.

So use kzalloc() instead of devm_kzalloc() when allocating "aspeed" and
update all error handling branches accordingly.

This prevent a potential double free().

This also fix another issue if opb_readl() fails. Instead of a direct
return, it now jumps in the error handling path.

Fixes: 606397d67f ("fsi: Add ast2600 master driver")
Suggested-by: Greg KH <gregkh@linuxfoundation.org>
Suggested-by: Guenter Roeck <linux@roeck-us.net>
Reviewed-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Christophe JAILLET <christophe.jaillet@wanadoo.fr>
Link: https://lore.kernel.org/r/2c123f8b0a40dc1a061fae982169fe030b4f47e6.1641765339.git.christophe.jaillet@wanadoo.fr
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
2022-04-08 14:40:23 +02:00
..
cf-fsi-fw.h
fsi-core.c
fsi-master-aspeed.c fsi: Aspeed: Fix a potential double free 2022-04-08 14:40:23 +02:00
fsi-master-ast-cf.c fsi: Add missing MODULE_DEVICE_TABLE 2021-07-20 16:05:42 +02:00
fsi-master-gpio.c fsi: Add missing MODULE_DEVICE_TABLE 2021-07-20 16:05:42 +02:00
fsi-master-hub.c
fsi-master.h
fsi-occ.c fsi: Add missing MODULE_DEVICE_TABLE 2021-07-20 16:05:42 +02:00
fsi-sbefifo.c fsi/sbefifo: Fix reset timeout 2021-07-14 16:56:41 +02:00
fsi-scom.c
Kconfig
Makefile