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[Stable-8.1.1,15/34] linux-user: Adjust brk for load_bias

Message ID 20230909102747.346522-15-mjt@tls.msk.ru
State New
Headers show
Series None | expand

Commit Message

Michael Tokarev Sept. 9, 2023, 10:27 a.m. UTC 
From: Richard Henderson <richard.henderson@linaro.org>

PIE executables are usually linked at offset 0 and are
relocated somewhere during load.  The hiaddr needs to
be adjusted to keep the brk next to the executable.

Cc: qemu-stable@nongnu.org
Fixes: 1f356e8c013 ("linux-user: Adjust initial brk when interpreter is close to executable")
Tested-by: Helge Deller <deller@gmx.de>
Reviewed-by: Ilya Leoshkevich <iii@linux.ibm.com>
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
(cherry picked from commit aec338d63bc28f1f13d5e64c561d7f1dd0e4b07e)
Signed-off-by: Michael Tokarev <mjt@tls.msk.ru>
diff mbox series

Patch

diff --git a/linux-user/elfload.c b/linux-user/elfload.c
index ac03beb01b..a69e7d7eab 100644
--- a/linux-user/elfload.c
+++ b/linux-user/elfload.c
@@ -3204,7 +3204,7 @@  static void load_elf_image(const char *image_name, int image_fd,
     info->start_data = -1;
     info->end_data = 0;
     /* Usual start for brk is after all sections of the main executable. */
-    info->brk = TARGET_PAGE_ALIGN(hiaddr);
+    info->brk = TARGET_PAGE_ALIGN(hiaddr + load_bias);
     info->elf_flags = ehdr->e_flags;
 
     prot_exec = PROT_EXEC;