commit a3a67f54f0b4ec98ff2380a792e5bfeebc47d554
author Richard Henderson <richard.henderson@linaro.org> Mon Mar 27 20:31:01 2023 +0000
committer Richard Henderson <richard.henderson@linaro.org> Tue Mar 28 15:23:10 2023 -0700
tree 30fa3eb80bf614fe57a299287168aa13c15a4e15
parent e506ad6a05c806bbef460a7d014a184ff8d707a6

linux-user: Pass last not end to probe_guest_base

Pass the address of the last byte of the image, rather than
the first address past the last byte.  This avoids overflow
when the last page of the address space is involved.

Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>

linux-user/flatload.c

diff --git a/linux-user/flatload.c b/linux-user/flatload.c
index e99570c..5efec26 100644
--- a/linux-user/flatload.c
+++ b/linux-user/flatload.c
@@ -448,7 +448,7 @@
      * Allocate the address space.
      */
     probe_guest_base(bprm->filename, 0,
-                     text_len + data_len + extra + indx_len);
+                     text_len + data_len + extra + indx_len - 1);
 
     /*
      * there are a couple of cases here,  the separate code/data