Merge tag 'v3.18.24' of git://git.kernel.org/pub/scm/linux/kernel/git/stable/linux-stable into linux-linaro-lsk-v3.18

Linux 3.18.24

# gpg: Signature made Sat Oct 31 13:44:30 2015 PDT using RSA key ID 97772CDC
# gpg: Can't check signature: public key not found

* tag 'v3.18.24' of git://git.kernel.org/pub/scm/linux/kernel/git/stable/linux-stable: (234 commits)
  Linux 3.18.24
  tty: fix stall caused by missing memory barrier in drivers/tty/n_tty.c
  Revert "tty: fix stall caused by missing memory barrier in drivers/tty/n_tty.c"
  Linux 3.18.23
  x86: Init per-cpu shadow copy of CR4 on 32-bit CPUs too
  3w-9xxx: don't unmap bounce buffered commands
  fib_rules: Fix dump_rules() not to exit early
  vfs: Test for and handle paths that are unreachable from their mnt_root
  md: flush ->event_work before stopping array.
  x86/nmi/64: Fix a paravirt stack-clobbering bug in the NMI code
  Revert "iio: bmg160: IIO_BUFFER and IIO_TRIGGERED_BUFFER are required"
  net: Fix skb_set_peeked use-after-free bug
  mm: check if section present during memory block registering
  hpfs: update ctime and mtime on directory modification
  drivercore: Fix unregistration path of platform devices
  ARM: OMAP2+: DRA7: clockdomain: change l4per2_7xx_clkdm to SW_WKUP
  of/address: Don't loop forever in of_find_matching_node_by_address().
  auxdisplay: ks0108: fix refcount
  Doc: ABI: testing: configfs-usb-gadget-sourcesink
  Doc: ABI: testing: configfs-usb-gadget-loopback
  ...

1 files changed, 6 insertions, 6 deletions

diff --git a/net/netfilter/ipvs/ip_vs_sched.c b/net/netfilter/ipvs/ip_vs_sched.c
index 4dbcda6258bc..21b6b515a09c 100644
--- a/net/netfilter/ipvs/ip_vs_sched.c
+++ b/net/netfilter/ipvs/ip_vs_sched.c
@@ -74,7 +74,7 @@ void ip_vs_unbind_scheduler(struct ip_vs_service *svc,
 
 	if (sched->done_service)
 		sched->done_service(svc);
-	/* svc->scheduler can not be set to NULL */
+	/* svc->scheduler can be set to NULL only by caller */
 }
 
 
@@ -148,21 +148,21 @@ void ip_vs_scheduler_put(struct ip_vs_scheduler *scheduler)
 
 void ip_vs_scheduler_err(struct ip_vs_service *svc, const char *msg)
 {
-	struct ip_vs_scheduler *sched;
+	struct ip_vs_scheduler *sched = rcu_dereference(svc->scheduler);
+	char *sched_name = sched ? sched->name : "none";
 
-	sched = rcu_dereference(svc->scheduler);
 	if (svc->fwmark) {
 		IP_VS_ERR_RL("%s: FWM %u 0x%08X - %s\n",
-			     sched->name, svc->fwmark, svc->fwmark, msg);
+			     sched_name, svc->fwmark, svc->fwmark, msg);
 #ifdef CONFIG_IP_VS_IPV6
 	} else if (svc->af == AF_INET6) {
 		IP_VS_ERR_RL("%s: %s [%pI6c]:%d - %s\n",
-			     sched->name, ip_vs_proto_name(svc->protocol),
+			     sched_name, ip_vs_proto_name(svc->protocol),
 			     &svc->addr.in6, ntohs(svc->port), msg);
 #endif
 	} else {
 		IP_VS_ERR_RL("%s: %s %pI4:%d - %s\n",
-			     sched->name, ip_vs_proto_name(svc->protocol),
+			     sched_name, ip_vs_proto_name(svc->protocol),
 			     &svc->addr.ip, ntohs(svc->port), msg);
 	}
 }