diff --git a/src/freedreno/ir3/ir3_compiler_nir.c b/src/freedreno/ir3/ir3_compiler_nir.c
index 7ae85ce74cc..71f57cc6aec 100644
--- a/src/freedreno/ir3/ir3_compiler_nir.c
+++ b/src/freedreno/ir3/ir3_compiler_nir.c
@@ -2568,7 +2568,17 @@ emit_tex_txs(struct ir3_context *ctx, nir_tex_instr *tex)
 
 	lod = ir3_get_src(ctx, &tex->src[lod_idx].src)[0];
 
-	sam = emit_sam(ctx, OPC_GETSIZE, info, dst_type, 0b1111, lod, NULL);
+	if (tex->sampler_dim != GLSL_SAMPLER_DIM_BUF) {
+		sam = emit_sam(ctx, OPC_GETSIZE, info, dst_type, 0b1111, lod, NULL);
+	} else {
+		/*
+		 * The maximum value which OPC_GETSIZE could return for one dimension
+		 * is 0x007ff0, however sampler buffer could be much bigger.
+		 * Blob uses OPC_GETBUF for them.
+		 */
+		sam = emit_sam(ctx, OPC_GETBUF, info, dst_type, 0b1111, NULL, NULL);
+	}
+
 	ir3_split_dest(b, dst, sam, 0, 4);
 
 	/* Array size actually ends up in .w rather than .z. This doesn't
diff --git a/src/freedreno/ir3/tests/disasm.c b/src/freedreno/ir3/tests/disasm.c
index c03484c3522..27c2f68918e 100644
--- a/src/freedreno/ir3/tests/disasm.c
+++ b/src/freedreno/ir3/tests/disasm.c
@@ -134,6 +134,8 @@ static const struct test {
 	INSTR_6XX(a0c00f00_04400002, "sam (f16)(xyzw)hr0.x, hr0.y, s#2, t#2"),
 	INSTR_6XX(a6c02f00_00000000, "rgetinfo (u16)(xyzw)hr0.x"),
 	INSTR_6XX(a3482f08_c0000000, "getinfo.base0 (u16)(xyzw)hr2.x, t#0"),
+	/* dEQP-GLES31.functional.texture.texture_buffer.render.as_fragment_texture.buffer_size_65536 */
+	INSTR_5XX(a2c03102_00000000, "getbuf (u32)(x)r0.z, t#0"),
 
 
 	/* cat6 */