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linux/drivers/base
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Abdun Nihaal f6a7ab60b6 regmap: fix potential memory leak of regmap_bus 
[ Upstream commit c871c199ac ]

When __regmap_init() is called from __regmap_init_i2c() and
__regmap_init_spi() (and their devm versions), the bus argument
obtained from regmap_get_i2c_bus() and regmap_get_spi_bus(), may be
allocated using kmemdup() to support quirks. In those cases, the
bus->free_on_exit field is set to true.

However, inside __regmap_init(), buf is not freed on any error path.
This could lead to a memory leak of regmap_bus when __regmap_init()
fails. Fix that by freeing bus on error path when free_on_exit is set.

Fixes: ea030ca688 ("regmap-i2c: Set regmap max raw r/w from quirks")
Signed-off-by: Abdun Nihaal <abdun.nihaal@gmail.com>
Link: https://patch.msgid.link/20250626172823.18725-1-abdun.nihaal@gmail.com
Signed-off-by: Mark Brown <broonie@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
History 2025-08-15 12:04:46 +02:00
..
firmware_loader firmware_loader: Block path traversal 2024-10-17 15:21:20 +02:00
power pmdomain: governor: Consider CPU latency tolerance from pm_domain_cpu_gov 2025-07-24 08:51:49 +02:00
regmap regmap: fix potential memory leak of regmap_bus 2025-08-15 12:04:46 +02:00
test driver core: test_async: fix an error code 2023-09-13 09:42:53 +02:00
arch_numa.c arm64: irq: set the correct node for VMAP stack 2024-02-05 20:12:46 +00:00
arch_topology.c RISC-V Patches for the 6.1 Merge Window, Part 1 2022-10-09 13:24:01 -07:00
attribute_container.c driver core: attribute_container: fix W=1 warnings 2021-05-14 13:37:10 +02:00
auxiliary.c Documentation/auxiliary_bus: Move the text into the code 2021-12-03 16:41:50 +01:00
base.h driver core: remove make_class_name declaration 2022-09-09 10:49:54 +02:00
bus.c driver core: bus: Fix double free in driver API bus_register() 2024-12-14 19:54:00 +01:00
cacheinfo.c drivers: base: cacheinfo: Fix shared_cpu_map changes in event of CPU hotplug 2023-06-09 10:34:17 +02:00
class.c class: fix possible memory leak in __class_register() 2022-12-31 13:32:38 +01:00
component.c drivers: base: component: fix memory leak with using debugfs_lookup() 2023-03-11 13:55:39 +01:00
container.c driver core: Remove redundant license text 2017-12-07 18:36:44 +01:00
core.c drivers: core: fix device leak in __fw_devlink_relax_cycles() 2025-03-13 12:53:22 +01:00
cpu.c x86/bugs: Add a Transient Scheduler Attacks mitigation 2025-07-10 15:59:54 +02:00
dd.c driver core: Release all resources during unbind before updating device links 2023-11-28 17:07:13 +00:00
devcoredump.c devcoredump: Send uevent once devcd is ready 2023-12-13 18:39:28 +01:00
devres.c drivers: base: devres: Allow to release group on device release 2025-04-25 10:43:32 +02:00
devtmpfs.c devtmpfs: fix the dangling pointer of global devtmpfsd thread 2022-06-27 16:41:13 +02:00
driver.c driver core: fix driver_set_override() issue with empty strings 2022-09-05 13:01:34 +02:00
firmware.c driver core: Remove redundant license text 2017-12-07 18:36:44 +01:00
hypervisor.c driver core: Remove redundant license text 2017-12-07 18:36:44 +01:00
init.c init: Initialize noop_backing_dev_info early 2022-06-16 10:55:57 +02:00
isa.c bus: Make remove callback return void 2021-07-21 11:53:42 +02:00
Kconfig devtmpfs: mount with noexec and nosuid 2021-12-30 13:54:42 +01:00
Makefile driver core: Add sysfs support for physical location of a device 2022-04-27 09:51:57 +02:00
map.c driver: base: Prefer unsigned int to bare use of unsigned 2021-07-21 17:30:09 +02:00
memory.c mm/memory_hotplug: add missing mem_hotplug_lock 2024-01-10 17:10:33 +01:00
module.c Revert "driver core: Fix uevent_show() vs driver detach race" 2024-11-08 16:26:44 +01:00
node.c base/node.c: initialize the accessor list before registering 2024-01-25 15:27:46 -08:00
physical_location.c driver core: location: Free struct acpi_pld_info *pld before return false 2023-03-10 09:33:33 +01:00
physical_location.h driver core: Add sysfs support for physical location of a device 2022-04-27 09:51:57 +02:00
pinctrl.c driver core: Remove redundant license text 2017-12-07 18:36:44 +01:00
platform-msi.c platform-msi: Export symbol platform_msi_create_irq_domain() 2022-09-28 14:21:05 +01:00
platform.c platform: Provide a remove callback that returns no value 2023-05-24 17:32:43 +01:00
property.c device property: Constify device child node APIs 2024-12-14 19:54:28 +01:00
soc.c base: soc: Make soc_device_match() simpler and easier to read 2022-03-18 14:28:07 +01:00
swnode.c software node: Correct a OOB check in software_node_get_reference_args() 2025-06-27 11:07:35 +01:00
syscore.c syscore: Use pm_pr_dbg() for syscore_{suspend,resume}() 2020-09-08 13:32:06 +02:00
topology.c topology: Keep the cpumask unchanged when printing cpumap 2025-01-17 13:34:44 +01:00
trace.c devres: Enable trace events 2021-06-15 17:14:36 +02:00
trace.h devres: Enable trace events 2021-06-15 17:14:36 +02:00
transport_class.c drivers: base: transport_class: fix resource leak when transport_add_device() fails 2023-03-10 09:33:34 +01:00