From: Gangliang Xie <ganglxie@amd.com>
Date: Tue, 12 May 2026 07:05:16 +0000 (+0800)
Subject: drm/amdgpu: add first record offset check
X-Git-Url: http://git.ipfire.org/gitweb.cgi?a=commitdiff_plain;h=4073cdf6713b7c170e35bf055354580cc52085d6;p=thirdparty%2Flinux.git

drm/amdgpu: add first record offset check

check the upper and lower limits of first record offset

Signed-off-by: Gangliang Xie <ganglxie@amd.com>
Reviewed-by: Tao Zhou <tao.zhou1@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
---

diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_ras_eeprom.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_ras_eeprom.c
index 5e35a6c141497..c61389a079822 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_ras_eeprom.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_ras_eeprom.c
@@ -1634,6 +1634,14 @@ int amdgpu_ras_eeprom_init(struct amdgpu_ras_eeprom_control *control)
 	}
 
 	control->ras_fri = RAS_OFFSET_TO_INDEX(control, hdr->first_rec_offset);
+	if (hdr->first_rec_offset < control->ras_record_offset ||
+	    control->ras_fri >= control->ras_max_record_count) {
+		dev_err(adev->dev,
+			"RAS header invalid, ras_fri: %u, first_rec_offset:0x%x",
+			control->ras_fri, hdr->first_rec_offset);
+		return -EINVAL;
+	}
+
 	control->ras_num_mca_recs = 0;
 	control->ras_num_pa_recs = 0;
 	return 0;