Commit 289e6a3edf for qemu.org

commit 289e6a3edf5041a9f96c3fb792845b94b5b3c666
Author: Jeuk Kim <jeuk20.kim@samsung.com>
Date:   Mon Feb 2 14:31:03 2026 +0900

    hw/ufs: Ensure DBC of PRDT uses only lower 18 bits

    The UFS spec defines the PRDT data byte count as an 18-bit field. This
    commit masks the value to the lower 18 bits to prevent incorrect
    transfer lengths and ensure compliance.

    Signed-off-by: Jeuk Kim <jeuk20.kim@samsung.com>

diff --git a/hw/ufs/ufs.c b/hw/ufs/ufs.c
index cab42ae7b6..d3f08f2ba9 100644
--- a/hw/ufs/ufs.c
+++ b/hw/ufs/ufs.c
@@ -224,7 +224,8 @@ static MemTxResult ufs_dma_read_prdt(UfsRequest *req)

     for (uint16_t i = 0; i < prdt_len; ++i) {
         hwaddr data_dma_addr = le64_to_cpu(prd_entries[i].addr);
-        uint32_t data_byte_count = le32_to_cpu(prd_entries[i].size) + 1;
+        uint32_t data_byte_count =
+            (le32_to_cpu(prd_entries[i].size) & 0x3ffff) + 1;
         qemu_sglist_add(req->sg, data_dma_addr, data_byte_count);
         req->data_len += data_byte_count;
     }