diff options
| author | John Lindgren <john.lindgren@tds.net> | 2011-03-25 00:28:31 +0100 |
|---|---|---|
| committer | Dave Airlie <airlied@redhat.com> | 2011-04-01 02:16:04 +0200 |
| commit | 97ea530f6fac1f9632b0c4792a2a56411454adbe (patch) | |
| tree | 97d3d926de57b7791214599abcfeb3a970279ed2 /drivers/gpu | |
| parent | Linux 2.6.39-rc1 (diff) | |
| download | linux-97ea530f6fac1f9632b0c4792a2a56411454adbe.tar.xz linux-97ea530f6fac1f9632b0c4792a2a56411454adbe.zip | |
drm/radeon/kms: add some sanity checks to obj info record parsingi (v2)
Fixes:
https://bugs.freedesktop.org/show_bug.cgi?id=35502
agd5f: also add sanity check to connector records.
v2: fix one more case.
Signed-off-by: Alex Deucher <alexdeucher@gmail.com>
Cc: stable@kernel.org
Signed-off-by: Dave Airlie <airlied@redhat.com>
Diffstat (limited to 'drivers/gpu')
| -rw-r--r-- | drivers/gpu/drm/radeon/radeon_atombios.c | 13 |
1 files changed, 7 insertions, 6 deletions
diff --git a/drivers/gpu/drm/radeon/radeon_atombios.c b/drivers/gpu/drm/radeon/radeon_atombios.c index 02d5c415f499..99768d9d91da 100644 --- a/drivers/gpu/drm/radeon/radeon_atombios.c +++ b/drivers/gpu/drm/radeon/radeon_atombios.c @@ -675,7 +675,8 @@ bool radeon_get_atom_connector_info_from_object_table(struct drm_device *dev) ATOM_ENCODER_CAP_RECORD *cap_record; u16 caps = 0; - while (record->ucRecordType > 0 && + while (record->ucRecordSize > 0 && + record->ucRecordType > 0 && record->ucRecordType <= ATOM_MAX_OBJECT_RECORD_NUMBER) { switch (record->ucRecordType) { case ATOM_ENCODER_CAP_RECORD_TYPE: @@ -720,7 +721,8 @@ bool radeon_get_atom_connector_info_from_object_table(struct drm_device *dev) break; } - while (record->ucRecordType > 0 && + while (record->ucRecordSize > 0 && + record->ucRecordType > 0 && record->ucRecordType <= ATOM_MAX_OBJECT_RECORD_NUMBER) { switch (record->ucRecordType) { case ATOM_I2C_RECORD_TYPE: @@ -782,10 +784,9 @@ bool radeon_get_atom_connector_info_from_object_table(struct drm_device *dev) ATOM_HPD_INT_RECORD *hpd_record; ATOM_I2C_ID_CONFIG_ACCESS *i2c_config; - while (record->ucRecordType > 0 - && record-> - ucRecordType <= - ATOM_MAX_OBJECT_RECORD_NUMBER) { + while (record->ucRecordSize > 0 && + record->ucRecordType > 0 && + record->ucRecordType <= ATOM_MAX_OBJECT_RECORD_NUMBER) { switch (record->ucRecordType) { case ATOM_I2C_RECORD_TYPE: i2c_record = |