From 316b01df9f24d6e72dfe1a59f93fb91cd0886598 Mon Sep 17 00:00:00 2001
From: cepetr <petr@cerninovi.cz>
Date: Thu, 19 Dec 2024 14:20:32 +0100
Subject: [PATCH] fix(core): panic on invalid syscall number

[no changelog]
---
 core/embed/sys/syscall/stm32/syscall_dispatch.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/core/embed/sys/syscall/stm32/syscall_dispatch.c b/core/embed/sys/syscall/stm32/syscall_dispatch.c
index 076acde171..7a8a427538 100644
--- a/core/embed/sys/syscall/stm32/syscall_dispatch.c
+++ b/core/embed/sys/syscall/stm32/syscall_dispatch.c
@@ -669,7 +669,7 @@ __attribute((no_stack_protector)) void syscall_handler(uint32_t *args,
     } break;
 
     default:
-      args[0] = 0xffffffff;
+      system_exit_fatal("Invalid syscall", __FILE__, __LINE__);
       break;
   }
 }