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| author | Louis-Alexis Eyraud <louisalexis.eyraud@collabora.com> | 2025-04-03 13:22:12 +0300 |
|---|---|---|
| committer | Joerg Roedel <jroedel@suse.de> | 2025-04-11 13:40:55 +0300 |
| commit | 38e8844005e6068f336a3ad45451a562a0040ca1 (patch) | |
| tree | b52f9f6531fe0f135a881ad1f2c76347dde97728 /scripts/lib/abi/helpers.py | |
| parent | 99deffc409b69000ac4877486e69ec6516becd53 (diff) | |
| download | linux-38e8844005e6068f336a3ad45451a562a0040ca1.tar.xz | |
iommu/mediatek: Fix NULL pointer deference in mtk_iommu_device_group
Currently, mtk_iommu calls during probe iommu_device_register before
the hw_list from driver data is initialized. Since iommu probing issue
fix, it leads to NULL pointer dereference in mtk_iommu_device_group when
hw_list is accessed with list_first_entry (not null safe).
So, change the call order to ensure iommu_device_register is called
after the driver data are initialized.
Fixes: 9e3a2a643653 ("iommu/mediatek: Adapt sharing and non-sharing pgtable case")
Fixes: bcb81ac6ae3c ("iommu: Get DT/ACPI parsing into the proper probe path")
Reviewed-by: Yong Wu <yong.wu@mediatek.com>
Tested-by: Chen-Yu Tsai <wenst@chromium.org> # MT8183 Juniper, MT8186 Tentacruel
Reviewed-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
Tested-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
Signed-off-by: Louis-Alexis Eyraud <louisalexis.eyraud@collabora.com>
Link: https://lore.kernel.org/r/20250403-fix-mtk-iommu-error-v2-1-fe8b18f8b0a8@collabora.com
Signed-off-by: Joerg Roedel <jroedel@suse.de>
Diffstat (limited to 'scripts/lib/abi/helpers.py')
0 files changed, 0 insertions, 0 deletions