X-Git-Url: https://err.no/cgi-bin/gitweb.cgi?a=blobdiff_plain;f=fs%2Fcompat.c;h=ac3fb9ed8eeaf847fcd2238edb2f941d7125b7a4;hb=3a3bca5ace9123d1a6b890ceac2902ebf2b1fd50;hp=8c665705c6a07beea9a4ead55a2184524f7ed41f;hpb=55faed1e607a24ca7f3453a3eb463ca8987f8139;p=linux-2.6

diff --git a/fs/compat.c b/fs/compat.c
index 8c665705c6..ac3fb9ed8e 100644
--- a/fs/compat.c
+++ b/fs/compat.c
@@ -1619,6 +1619,7 @@ compat_sys_select(int n, compat_ulong_t __user *inp, compat_ulong_t __user *outp
 	char *bits;
 	long timeout;
 	int size, max_fdset, ret = -EINVAL;
+	struct fdtable *fdt;
 
 	timeout = MAX_SCHEDULE_TIMEOUT;
 	if (tvp) {
@@ -1644,7 +1645,10 @@ compat_sys_select(int n, compat_ulong_t __user *inp, compat_ulong_t __user *outp
 		goto out_nofds;
 
 	/* max_fdset can increase, so grab it once to avoid race */
-	max_fdset = current->files->max_fdset;
+	rcu_read_lock();
+	fdt = files_fdtable(current->files);
+	max_fdset = fdt->max_fdset;
+	rcu_read_unlock();
 	if (n > max_fdset)
 		n = max_fdset;