memstick: fix a double-free bug in memstick_check
[ Upstream commit5.4-rM2-2.2.x-imx-squashede3e9ced5c9
] kfree(host->card) has been called in put_device so that another kfree would raise cause a double-free bug. Fixes:0193383a58
("memstick: core: fix device_register() error handling") Reported-by: Hulk Robot <hulkci@huawei.com> Signed-off-by: Qinglang Miao <miaoqinglang@huawei.com> Link: https://lore.kernel.org/r/20201120074846.31322-1-miaoqinglang@huawei.com Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org> Signed-off-by: Sasha Levin <sashal@kernel.org>
parent
4279ff6dea
commit
8ce9155702
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@ -468,7 +468,6 @@ static void memstick_check(struct work_struct *work)
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host->card = card;
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if (device_register(&card->dev)) {
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put_device(&card->dev);
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kfree(host->card);
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host->card = NULL;
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}
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} else
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