1 files changed, 1 insertions, 1 deletions

diff --git a/drivers/gpu/nvgpu/os/linux/ioctl_dbg.c b/drivers/gpu/nvgpu/os/linux/ioctl_dbg.c
index 938e0abd..383bdca9 100644
--- a/drivers/gpu/nvgpu/os/linux/ioctl_dbg.c
+++ b/drivers/gpu/nvgpu/os/linux/ioctl_dbg.c
@@ -1383,7 +1383,7 @@ static int gk20a_perfbuf_map(struct dbg_session_gk20a *dbg_s,
 
         /* perf output buffer may not cross a 4GB boundary */
         virt_size = u64_lo32(args->mapping_size);
-        if (u64_hi32(args->offset) != u64_hi32(args->offset + virt_size)) {
+        if (u64_hi32(args->offset) != u64_hi32(args->offset + virt_size - 1)) {
                 err = -EINVAL;
                 goto err_unmap;
         }