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| author | Konstantin Meskhidze <konstantin.meskhidze@huawei.com> | 2023-08-17 14:33:49 +0300 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2023-11-20 13:59:09 +0300 |
| commit | 19534a7a225f1bf2da70a9a90d41d0215f8f6b45 (patch) | |
| tree | c3e38f280e02a0171557a0b97da45accf9027eb3 /drivers/gpu/drm/radeon | |
| parent | 43e8332be4253c4ca8ed5a305e5bf861bba3c6af (diff) | |
| download | linux-19534a7a225f1bf2da70a9a90d41d0215f8f6b45.tar.xz | |
drm/radeon: possible buffer overflow
[ Upstream commit dd05484f99d16715a88eedfca363828ef9a4c2d4 ]
Buffer 'afmt_status' of size 6 could overflow, since index 'afmt_idx' is
checked after access.
Fixes: 5cc4e5fc293b ("drm/radeon: Cleanup HDMI audio interrupt handling for evergreen")
Co-developed-by: Ivanov Mikhail <ivanov.mikhail1@huawei-partners.com>
Signed-off-by: Konstantin Meskhidze <konstantin.meskhidze@huawei.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Diffstat (limited to 'drivers/gpu/drm/radeon')
| -rw-r--r-- | drivers/gpu/drm/radeon/evergreen.c | 7 |
1 files changed, 4 insertions, 3 deletions
diff --git a/drivers/gpu/drm/radeon/evergreen.c b/drivers/gpu/drm/radeon/evergreen.c index 4f06356d9ce2..f0ae087be914 100644 --- a/drivers/gpu/drm/radeon/evergreen.c +++ b/drivers/gpu/drm/radeon/evergreen.c @@ -4821,14 +4821,15 @@ restart_ih: break; case 44: /* hdmi */ afmt_idx = src_data; - if (!(afmt_status[afmt_idx] & AFMT_AZ_FORMAT_WTRIG)) - DRM_DEBUG("IH: IH event w/o asserted irq bit?\n"); - if (afmt_idx > 5) { DRM_ERROR("Unhandled interrupt: %d %d\n", src_id, src_data); break; } + + if (!(afmt_status[afmt_idx] & AFMT_AZ_FORMAT_WTRIG)) + DRM_DEBUG("IH: IH event w/o asserted irq bit?\n"); + afmt_status[afmt_idx] &= ~AFMT_AZ_FORMAT_WTRIG; queue_hdmi = true; DRM_DEBUG("IH: HDMI%d\n", afmt_idx + 1); |