X-Git-Url: https://err.no/cgi-bin/gitweb.cgi?a=blobdiff_plain;f=fs%2Fcompat.c;h=ac3fb9ed8eeaf847fcd2238edb2f941d7125b7a4;hb=3a3bca5ace9123d1a6b890ceac2902ebf2b1fd50;hp=c2e0813164b458bb9fa93e383be7f967f63aff21;hpb=41d0ab2a7dfe9e25504169c98eac5e84e5509e3d;p=linux-2.6

diff --git a/fs/compat.c b/fs/compat.c
index c2e0813164..ac3fb9ed8e 100644
--- a/fs/compat.c
+++ b/fs/compat.c
@@ -1645,8 +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 */
+	rcu_read_lock();
 	fdt = files_fdtable(current->files);
 	max_fdset = fdt->max_fdset;
+	rcu_read_unlock();
 	if (n > max_fdset)
 		n = max_fdset;