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[Minios-devel] [UNIKRAFT PATCH v4 4/4] lib/ukboot: Initialize the canary value at boot


  • To: "minios-devel@xxxxxxxxxxxxx" <minios-devel@xxxxxxxxxxxxx>
  • From: Vlad-Andrei BĂDOIU (78692) <vlad_andrei.badoiu@xxxxxxxxxxxxxxx>
  • Date: Tue, 4 Feb 2020 14:10:01 +0000
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  • Cc: "felipe.huici@xxxxxxxxx" <felipe.huici@xxxxxxxxx>, "simon.kuenzer@xxxxxxxxx" <simon.kuenzer@xxxxxxxxx>, Vlad-Andrei BĂDOIU (78692) <vlad_andrei.badoiu@xxxxxxxxxxxxxxx>, "sharan.santhanam@xxxxxxxxx" <sharan.santhanam@xxxxxxxxx>
  • Delivery-date: Tue, 04 Feb 2020 14:10:17 +0000
  • List-id: Mini-os development list <minios-devel.lists.xenproject.org>
  • Thread-index: AQHV22TKBpvTUKEKOEKU8TPNpVsueA==
  • Thread-topic: [UNIKRAFT PATCH v4 4/4] lib/ukboot: Initialize the canary value at boot

We initialize the canary value right after all the internal libraries
have loaded.

Signed-off-by: Vlad-Andrei Badoiu <vlad_andrei.badoiu@xxxxxxxxxxxxxxx>
---
 lib/ukboot/boot.c | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/lib/ukboot/boot.c b/lib/ukboot/boot.c
index e8a2ac79..f7873a12 100644
--- a/lib/ukboot/boot.c
+++ b/lib/ukboot/boot.c
@@ -61,6 +61,9 @@
 #ifdef CONFIG_LIBUKLIBPARAM
 #include <uk/libparam.h>
 #endif /* CONFIG_LIBUKLIBPARAM */
+#if CONFIG_LIBUKSP
+#include <uk/sp.h>
+#endif
 
 int main(int argc, char *argv[]) __weak;
 
@@ -195,6 +198,11 @@ void ukplat_entry(int argc, char *argv[])
                (*ctorfn)();
        }
 
+#if CONFIG_LIBUKSP
+       INIT_STACK_CANARY();
+#endif
+
+
 #ifdef CONFIG_LIBUKLIBPARAM
        rc = (argc > 1) ? uk_libparam_parse(argv[0], argc - 1, &argv[1]) : 0;
        if (unlikely(rc < 0))
-- 
2.20.1


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