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diff --git a/sys/i386/linux/linux_sysvec.c b/sys/i386/linux/linux_sysvec.c
--- a/sys/i386/linux/linux_sysvec.c
+++ b/sys/i386/linux/linux_sysvec.c
@@ -126,11 +126,14 @@
argv = base;
envp = base + (imgp->args->argc + 1);
base--;
- suword(base, (intptr_t)envp);
+ if (suword(base, (intptr_t)envp) != 0)
+ return (EFAULT);
base--;
- suword(base, (intptr_t)argv);
+ if (suword(base, (intptr_t)argv) != 0)
+ return (EFAULT);
base--;
- suword(base, imgp->args->argc);
+ if (suword(base, imgp->args->argc) != 0)
+ return (EFAULT);
*stack_base = (uintptr_t)base;
return (0);
}

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