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| author | Lv Yunlong <lyl2019@mail.ustc.edu.cn> | 2021-04-02 22:47:55 -0700 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2022-01-27 11:03:30 +0100 |
| commit | 9a664557effecd59704eccd9a0501dcc6663d1b9 (patch) | |
| tree | 9ac8a6ef41c7b38a127f82b8cce22e8c11a16cd1 /kernel | |
| parent | 643af6932580f0c8e9c21d191ff1923dca0b9d47 (diff) | |
wireless: iwlwifi: Fix a double free in iwl_txq_dyn_alloc_dma
[ Upstream commit f973795a8d19cbf3d03807704eb7c6ff65788d5a ]
In iwl_txq_dyn_alloc_dma, txq->tfds is freed at first time by:
iwl_txq_alloc()->goto err_free_tfds->dma_free_coherent(). But
it forgot to set txq->tfds to NULL.
Then the txq->tfds is freed again in iwl_txq_dyn_alloc_dma by:
goto error->iwl_txq_gen2_free_memory()->dma_free_coherent().
My patch sets txq->tfds to NULL after the first free to avoid the
double free.
Fixes: 0cd1ad2d7fd41 ("iwlwifi: move all bus-independent TX functions to common code")
Signed-off-by: Lv Yunlong <lyl2019@mail.ustc.edu.cn>
Link: https://lore.kernel.org/r/20210403054755.4781-1-lyl2019@mail.ustc.edu.cn
Signed-off-by: Luca Coelho <luciano.coelho@intel.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Diffstat (limited to 'kernel')
0 files changed, 0 insertions, 0 deletions