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| author | Pei Xiao <xiaopei01@kylinos.cn> | 2024-11-28 16:38:17 +0800 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2024-12-14 20:03:15 +0100 |
| commit | 90b72189de2cddacb26250579da0510b29a8b82b (patch) | |
| tree | 272efc9d81e31892be68cb856c916efe214a2bc4 /init | |
| parent | cd3018c9b2ad6ff64cc5f0096f3c108e1d807cbe (diff) | |
| download | linux-90b72189de2cddacb26250579da0510b29a8b82b.tar.gz linux-90b72189de2cddacb26250579da0510b29a8b82b.tar.bz2 linux-90b72189de2cddacb26250579da0510b29a8b82b.zip | |
spi: mpc52xx: Add cancel_work_sync before module remove
[ Upstream commit 984836621aad98802d92c4a3047114cf518074c8 ]
If we remove the module which will call mpc52xx_spi_remove
it will free 'ms' through spi_unregister_controller.
while the work ms->work will be used. The sequence of operations
that may lead to a UAF bug.
Fix it by ensuring that the work is canceled before proceeding with
the cleanup in mpc52xx_spi_remove.
Fixes: ca632f556697 ("spi: reorganize drivers")
Signed-off-by: Pei Xiao <xiaopei01@kylinos.cn>
Link: https://patch.msgid.link/1f16f8ae0e50ca9adb1dc849bf2ac65a40c9ceb9.1732783000.git.xiaopei01@kylinos.cn
Signed-off-by: Mark Brown <broonie@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Diffstat (limited to 'init')
0 files changed, 0 insertions, 0 deletions