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authorReshetova, Elena <elena.reshetova@intel.com>2017-06-30 13:08:08 +0300
committerDavid S. Miller <davem@davemloft.net>2017-07-01 17:39:09 +0300
commitc122e14df2d64311d1f0c0bbf4d8f42a7a8baf41 (patch)
tree124cc4cd33a74c741a7f611b2143a37b00c0e19c /net/core/net-sysfs.c
parentedcb691871b27c3cc463b7291afe75f1c3423406 (diff)
downloadlinux-c122e14df2d64311d1f0c0bbf4d8f42a7a8baf41.tar.xz
net: convert net.passive from atomic_t to refcount_t
refcount_t type and corresponding API should be used instead of atomic_t when the variable is used as a reference counter. This allows to avoid accidental refcounter overflows that might lead to use-after-free situations. Signed-off-by: Elena Reshetova <elena.reshetova@intel.com> Signed-off-by: Hans Liljestrand <ishkamiel@gmail.com> Signed-off-by: Kees Cook <keescook@chromium.org> Signed-off-by: David Windsor <dwindsor@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/core/net-sysfs.c')
-rw-r--r--net/core/net-sysfs.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/net/core/net-sysfs.c b/net/core/net-sysfs.c
index fe7e145c543c..b4f9922b6f23 100644
--- a/net/core/net-sysfs.c
+++ b/net/core/net-sysfs.c
@@ -1448,7 +1448,7 @@ static void *net_grab_current_ns(void)
struct net *ns = current->nsproxy->net_ns;
#ifdef CONFIG_NET_NS
if (ns)
- atomic_inc(&ns->passive);
+ refcount_inc(&ns->passive);
#endif
return ns;
}