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linux-stable/drivers/mcb
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Dan Carpenter 25a1433216 mcb: fix error handling in mcb_alloc_bus() 
There are two bugs:
1) If ida_simple_get() fails then this code calls put_device(carrier)
   but we haven't yet called get_device(carrier) and probably that
   leads to a use after free.
2) After device_initialize() then we need to use put_device() to
   release the bus.  This will free the internal resources tied to the
   device and call mcb_free_bus() which will free the rest.

Fixes: 5d9e2ab9fe ("mcb: Implement bus->dev.release callback")
Fixes: 18d2881980 ("mcb: Correctly initialize the bus's device")
Cc: stable@vger.kernel.org
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Johannes Thumshirn <jth@kernel.org>
Link: https://lore.kernel.org/r/32e160cf6864ce77f9d62948338e24db9fd8ead9.1630931319.git.johannes.thumshirn@wdc.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2021-09-14 11:22:26 +02:00
..
Kconfig treewide: Add SPDX license identifier - Makefile/Kconfig 2019-05-21 10:50:46 +02:00
Makefile License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
mcb-core.c mcb: fix error handling in mcb_alloc_bus() 2021-09-14 11:22:26 +02:00
mcb-internal.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
mcb-lpc.c mcb: Use DEFINE_RES_MEM() helper macro and fix the end address 2021-06-24 15:56:25 +02:00
mcb-parse.c drivers: mcb: use symbol namespaces 2019-11-03 19:54:53 +01:00
mcb-pci.c drivers: mcb: use symbol namespaces 2019-11-03 19:54:53 +01:00