Messages in this thread Patch in this message | | | From | Greg Kroah-Hartman <> | Subject | [PATCH 5.10 272/545] mtd: rawnand: meson: Fix a potential double free issue | Date | Fri, 19 Aug 2022 17:40:42 +0200 |
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From: Christophe JAILLET <christophe.jaillet@wanadoo.fr>
[ Upstream commit ec0da06337751b18f6dee06b6526e0f0d6e80369 ]
When meson_nfc_nand_chip_cleanup() is called, it will call: meson_nfc_free_buffer(&meson_chip->nand); nand_cleanup(&meson_chip->nand);
nand_cleanup() in turn will call nand_detach() which calls the .detach_chip() which is here meson_nand_detach_chip().
meson_nand_detach_chip() already calls meson_nfc_free_buffer(), so we could double free some memory.
Fix it by removing the unneeded explicit call to meson_nfc_free_buffer().
Fixes: 8fae856c5350 ("mtd: rawnand: meson: add support for Amlogic NAND flash controller") Signed-off-by: Christophe JAILLET <christophe.jaillet@wanadoo.fr> Acked-by: Liang Yang <liang.yang@amlogic.com> Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com> Link: https://lore.kernel.org/linux-mtd/ec15c358b8063f7c50ff4cd628cf0d2e14e43f49.1653064877.git.christophe.jaillet@wanadoo.fr Signed-off-by: Sasha Levin <sashal@kernel.org> --- drivers/mtd/nand/raw/meson_nand.c | 1 - 1 file changed, 1 deletion(-)
diff --git a/drivers/mtd/nand/raw/meson_nand.c b/drivers/mtd/nand/raw/meson_nand.c index 817bddccb775..327a2257ec26 100644 --- a/drivers/mtd/nand/raw/meson_nand.c +++ b/drivers/mtd/nand/raw/meson_nand.c @@ -1307,7 +1307,6 @@ static int meson_nfc_nand_chip_cleanup(struct meson_nfc *nfc) if (ret) return ret; - meson_nfc_free_buffer(&meson_chip->nand); nand_cleanup(&meson_chip->nand); list_del(&meson_chip->node); } -- 2.35.1
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