From ac5b8b6f22118620cd1133d9943b1f31dc40a913 Mon Sep 17 00:00:00 2001 From: Linus Torvalds Date: Fri, 9 Sep 2005 15:42:34 -0700 Subject: [PATCH] Preempt-safe RCU file usage Fix up fs/compat.c fixes. --- fs/compat.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/fs/compat.c b/fs/compat.c index c2e0813164b4..ac3fb9ed8eea 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; -- 2.30.2