UbiquitousOS
/
OpenCloudOS-Kernel
mirror of https://gitee.com/OpenCloudOS/OpenCloudOS-Kernel.git
11
0
Fork 0
Code Issues Projects Releases Wiki Activity

spi: microchip-core: fix UAF in mchp_corespi_remove() 

When using devm_spi_register_master(), the unregister function will
be called in devres_release_all() which is called after ->remove(),
so remove spi_unregister_master() andspi_master_put().

Fixes: 9ac8d17694 ("spi: add support for microchip fpga spi controllers")
Signed-off-by: Yang Yingliang <yangyingliang@huawei.com>
Reviewed-by: Conor Dooley <conor.dooley@microchip.com>
Link: https://lore.kernel.org/r/20220713025657.3524506-2-yangyingliang@huawei.com
Signed-off-by: Mark Brown <broonie@kernel.org>
This commit is contained in:
Yang Yingliang 2022-07-13 10:56:55 +08:00 committed by Mark Brown
parent cdb0cc9379
commit e82c6d62a1
No known key found for this signature in database
GPG Key ID: 24D68B725D5487D0
1 changed files with 0 additions and 2 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
drivers/spi/spi-microchip-core.c
View File

@ -595,8 +595,6 @@ static int mchp_corespi_remove(struct platform_device *pdev)
struct mchp_corespi *spi = spi_master_get_devdata(master);
mchp_corespi_disable_ints(spi);
spi_unregister_master(master);
spi_master_put(master);
clk_disable_unprepare(spi->clk);
mchp_corespi_disable(spi);