linux/drivers/bus/fsl-mc
Ma Ke cf8e62f6e1 bus: fsl-mc: Fix potential double device reference in fsl_mc_get_endpoint()
commit bddbe13d36 upstream.

The fsl_mc_get_endpoint() function may call fsl_mc_device_lookup()
twice, which would increment the device's reference count twice if
both lookups find a device. This could lead to a reference count leak.

Found by code review.

Cc: stable@vger.kernel.org
Fixes: 1ac210d128 ("bus: fsl-mc: add the fsl_mc_get_endpoint function")
Signed-off-by: Ma Ke <make24@iscas.ac.cn>
Tested-by: Ioana Ciornei <ioana.ciornei@nxp.com>
Reviewed-by: Simon Horman <horms@kernel.org>
Fixes: 8567494ceb ("bus: fsl-mc: rescan devices if endpoint not found")
Link: https://patch.msgid.link/20250717022309.3339976-1-make24@iscas.ac.cn
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
History 2025-08-01 09:48:43 +01:00
..
dpbp.c bus: fsl-mc: remove duplicated include files 2018-12-06 15:53:20 +01:00
dpcon.c bus: fsl-mc: remove duplicated include files 2018-12-06 15:53:20 +01:00
dpmcp.c bus: fsl-mc: change mc_command in fsl_mc_command 2018-03-23 15:52:48 +01:00
dprc-driver.c Char/Misc and other driver subsystem updates for 6.5-rc1 2023-07-03 12:46:47 -07:00
dprc.c bus: fsl-mc: Replace deprecated strncpy() with strscpy_pad() 2023-09-29 14:48:31 -07:00
fsl-mc-allocator.c bus: fsl-mc: fsl-mc-allocator: Drop a write-only variable 2023-06-08 17:56:26 -05:00
fsl-mc-bus.c bus: fsl-mc: Fix potential double device reference in fsl_mc_get_endpoint() 2025-08-01 09:48:43 +01:00
fsl-mc-msi.c bus: Explicitly include correct DT includes 2023-08-12 10:31:01 +02:00
fsl-mc-private.h bus/fsl-mc: Add generic implementation for open/reset/close commands 2021-09-28 16:56:05 -06:00
fsl-mc-uapi.c bus: fsl-mc: fix GET/SET_TAILDROP command ids 2025-06-27 11:11:20 +01:00
Kconfig genirq: Get rid of GENERIC_MSI_IRQ_DOMAIN 2022-11-17 15:15:20 +01:00
Makefile bus/fsl-mc: Add generic implementation for open/reset/close commands 2021-09-28 16:56:05 -06:00
mc-io.c bus: fsl-mc: do not add a device-link for the UAPI used DPMCP device 2025-06-27 11:11:20 +01:00
mc-sys.c bus: fsl-mc: increase MC_CMD_COMPLETION_TIMEOUT_MS value 2025-06-27 11:11:35 +01:00
obj-api.c bus/fsl-mc: Add generic implementation for open/reset/close commands 2021-09-28 16:56:05 -06:00