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Index: sys/kern/kern_descrip.c
===================================================================
--- sys/kern/kern_descrip.c
+++ sys/kern/kern_descrip.c
@@ -2656,9 +2656,13 @@
* table before this fd was closed, so it possible that
* there is a stale fp pointer in cached version.
*/
- fdt = *(const struct fdescenttbl * const volatile *)&(fdp->fd_files);
+ fdt = *(const struct fdescenttbl * const volatile *)
+ &(fdp->fd_files);
continue;
}
+ if (count + 1 < count)
+ return (EBADF);
+
/*
* Use an acquire barrier to force re-reading of fdt so it is
* refreshed for verification.

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