From 6b6cf2b5debd42de39afd8ac84b60faeca62cfaf Mon Sep 17 00:00:00 2001 From: Dmitry Osipenko Date: Tue, 18 Aug 2020 02:50:48 +0300 Subject: mfd: core: Fix double-free in mfd_remove_devices_fn() The pdev.mfd_cell is released by platform_device_release(), which is invoked by platform_device_unregister(). Hence mfd_remove_devices_fn() shouldn't release the cell variable. The double-free bug is reported KASAN during of MFD driver module removal. Fixes: 466a62d7642f ("mfd: core: Make a best effort attempt to match devices with the correct of_nodes") Reported-by: Marek Szyprowski Signed-off-by: Dmitry Osipenko Signed-off-by: Lee Jones --- drivers/mfd/mfd-core.c | 2 -- 1 file changed, 2 deletions(-) (limited to 'drivers/mfd') diff --git a/drivers/mfd/mfd-core.c b/drivers/mfd/mfd-core.c index c3651f06684f..c50718e3db58 100644 --- a/drivers/mfd/mfd-core.c +++ b/drivers/mfd/mfd-core.c @@ -370,8 +370,6 @@ static int mfd_remove_devices_fn(struct device *dev, void *data) regulator_bulk_unregister_supply_alias(dev, cell->parent_supplies, cell->num_parent_supplies); - kfree(cell); - platform_device_unregister(pdev); return 0; } -- cgit v1.2.3