3.6.11.4 stable review patch. If anyone has any objections, please let me know. ------------------ From: Alex Deucher [ Upstream commit 441e76ca83ac604eaf0f046def96d8e3a27eea28 ] The code was mis-handling variable sized arrays. Reported-by: Sylvain BERTRAND Signed-off-by: Alex Deucher Cc: stable@vger.kernel.org Signed-off-by: Steven Rostedt --- drivers/gpu/drm/radeon/radeon_atombios.c | 11 +++++------ 1 file changed, 5 insertions(+), 6 deletions(-) diff --git a/drivers/gpu/drm/radeon/radeon_atombios.c b/drivers/gpu/drm/radeon/radeon_atombios.c index 77fec04..3e3b3df 100644 --- a/drivers/gpu/drm/radeon/radeon_atombios.c +++ b/drivers/gpu/drm/radeon/radeon_atombios.c @@ -2507,6 +2507,7 @@ static int radeon_atombios_parse_power_table_6(struct radeon_device *rdev) int index = GetIndexIntoMasterTable(DATA, PowerPlayInfo); u16 data_offset; u8 frev, crev; + u8 *power_state_offset; if (!atom_parse_data_header(mode_info->atom_context, index, NULL, &frev, &crev, &data_offset)) @@ -2529,11 +2530,11 @@ static int radeon_atombios_parse_power_table_6(struct radeon_device *rdev) state_array->ucNumEntries, GFP_KERNEL); if (!rdev->pm.power_state) return state_index; + power_state_offset = (u8 *)state_array->states; for (i = 0; i < state_array->ucNumEntries; i++) { mode_index = 0; - power_state = (union pplib_power_state *)&state_array->states[i]; - /* XXX this might be an inagua bug... */ - non_clock_array_index = i; /* power_state->v2.nonClockInfoIndex */ + power_state = (union pplib_power_state *)power_state_offset; + non_clock_array_index = power_state->v2.nonClockInfoIndex; non_clock_info = (struct _ATOM_PPLIB_NONCLOCK_INFO *) &non_clock_info_array->nonClockInfo[non_clock_array_index]; rdev->pm.power_state[i].clock_info = kzalloc(sizeof(struct radeon_pm_clock_info) * @@ -2545,9 +2546,6 @@ static int radeon_atombios_parse_power_table_6(struct radeon_device *rdev) if (power_state->v2.ucNumDPMLevels) { for (j = 0; j < power_state->v2.ucNumDPMLevels; j++) { clock_array_index = power_state->v2.clockInfoIndex[j]; - /* XXX this might be an inagua bug... */ - if (clock_array_index >= clock_info_array->ucNumEntries) - continue; clock_info = (union pplib_clock_info *) &clock_info_array->clockInfo[clock_array_index * clock_info_array->ucEntrySize]; valid = radeon_atombios_parse_pplib_clock_info(rdev, @@ -2569,6 +2567,7 @@ static int radeon_atombios_parse_power_table_6(struct radeon_device *rdev) non_clock_info); state_index++; } + power_state_offset += 2 + power_state->v2.ucNumDPMLevels; } /* if multiple clock modes, mark the lowest as no display */ for (i = 0; i < state_index; i++) { -- 1.7.10.4 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/