Eric Dumazet e30b38c298 ip: Fix ip_dev_loopback_xmit() ... Eric Paris got following trace with a linux-next kernel [ 14.203970] BUG: using smp_processor_id() in preemptible [00000000] code: avahi-daemon/2093 [ 14.204025] caller is netif_rx+0xfa/0x110 [ 14.204035] Call Trace: [ 14.204064] [<ffffffff81278fe5>] debug_smp_processor_id+0x105/0x110 [ 14.204070] [<ffffffff8142163a>] netif_rx+0xfa/0x110 [ 14.204090] [<ffffffff8145b631>] ip_dev_loopback_xmit+0x71/0xa0 [ 14.204095] [<ffffffff8145b892>] ip_mc_output+0x192/0x2c0 [ 14.204099] [<ffffffff8145d610>] ip_local_out+0x20/0x30 [ 14.204105] [<ffffffff8145d8ad>] ip_push_pending_frames+0x28d/0x3d0 [ 14.204119] [<ffffffff8147f1cc>] udp_push_pending_frames+0x14c/0x400 [ 14.204125] [<ffffffff814803fc>] udp_sendmsg+0x39c/0x790 [ 14.204137] [<ffffffff814891d5>] inet_sendmsg+0x45/0x80 [ 14.204149] [<ffffffff8140af91>] sock_sendmsg+0xf1/0x110 [ 14.204189] [<ffffffff8140dc6c>] sys_sendmsg+0x20c/0x380 [ 14.204233] [<ffffffff8100ad82>] system_call_fastpath+0x16/0x1b While current linux-2.6 kernel doesnt emit this warning, bug is latent and might cause unexpected failures. ip_dev_loopback_xmit() runs in process context, preemption enabled, so must call netif_rx_ni() instead of netif_rx(), to make sure that we process pending software interrupt. Same change for ip6_dev_loopback_xmit() Reported-by: Eric Paris <eparis@redhat.com> Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>		2010-04-15 14:25:22 -07:00
..
netfilter	include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h	2010-03-30 22:02:32 +09:00
af_inet.c	Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-2.6	2010-04-06 08:34:06 -07:00
ah4.c	include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h	2010-03-30 22:02:32 +09:00
arp.c	include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h	2010-03-30 22:02:32 +09:00
cipso_ipv4.c	include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h	2010-03-30 22:02:32 +09:00
datagram.c
devinet.c	include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h	2010-03-30 22:02:32 +09:00
esp4.c	xfrm: SA lookups signature with mark	2010-02-22 16:20:22 -08:00
fib_frontend.c	include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h	2010-03-30 22:02:32 +09:00
fib_hash.c	include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h	2010-03-30 22:02:32 +09:00
fib_lookup.h
fib_rules.c
fib_semantics.c	include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h	2010-03-30 22:02:32 +09:00
fib_trie.c	fib: suppress lockdep-RCU false positive in FIB trie.	2010-04-14 16:13:29 -07:00
icmp.c	include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h	2010-03-30 22:02:32 +09:00
igmp.c	include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h	2010-03-30 22:02:32 +09:00
inet_connection_sock.c
inet_diag.c	include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h	2010-03-30 22:02:32 +09:00
inet_fragment.c	include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h	2010-03-30 22:02:32 +09:00
inet_hashtables.c
inet_lro.c
inet_timewait_sock.c	include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h	2010-03-30 22:02:32 +09:00
inetpeer.c
ip_forward.c	include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h	2010-03-30 22:02:32 +09:00
ip_fragment.c	include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h	2010-03-30 22:02:32 +09:00
ip_gre.c	include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h	2010-03-30 22:02:32 +09:00
ip_input.c	include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h	2010-03-30 22:02:32 +09:00
ip_options.c	include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h	2010-03-30 22:02:32 +09:00
ip_output.c	ip: Fix ip_dev_loopback_xmit()	2010-04-15 14:25:22 -07:00
ip_sockglue.c	include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h	2010-03-30 22:02:32 +09:00
ipcomp.c	xfrm: SA lookups signature with mark	2010-02-22 16:20:22 -08:00
ipconfig.c	include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h	2010-03-30 22:02:32 +09:00
ipip.c	include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h	2010-03-30 22:02:32 +09:00
ipmr.c	include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h	2010-03-30 22:02:32 +09:00
Kconfig
Makefile
netfilter.c	include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h	2010-03-30 22:02:32 +09:00
proc.c	tcp: Add SNMP counters for backlog and min_ttl drops	2010-03-08 10:45:27 -08:00
protocol.c
raw.c	include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h	2010-03-30 22:02:32 +09:00
route.c	include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h	2010-03-30 22:02:32 +09:00
syncookies.c
sysctl_net_ipv4.c	include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h	2010-03-30 22:02:32 +09:00
tcp_bic.c
tcp_cong.c	include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h	2010-03-30 22:02:32 +09:00
tcp_cubic.c
tcp_diag.c
tcp_highspeed.c
tcp_htcp.c
tcp_hybla.c
tcp_illinois.c
tcp_input.c	include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h	2010-03-30 22:02:32 +09:00
tcp_ipv4.c	include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h	2010-03-30 22:02:32 +09:00
tcp_lp.c
tcp_minisocks.c	include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h	2010-03-30 22:02:32 +09:00
tcp_output.c	Revert "tcp: Set CHECKSUM_UNNECESSARY in tcp_init_nondata_skb"	2010-04-11 02:40:49 -07:00
tcp_probe.c	include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h	2010-03-30 22:02:32 +09:00
tcp_scalable.c
tcp_timer.c	include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h	2010-03-30 22:02:32 +09:00
tcp_vegas.c
tcp_vegas.h
tcp_veno.c
tcp_westwood.c
tcp_yeah.c
tcp.c	Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-2.6	2010-04-06 08:34:06 -07:00
tunnel4.c	include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h	2010-03-30 22:02:32 +09:00
udp_impl.h
udp.c	Merge branch 'master' of /home/davem/src/GIT/linux-2.6/	2010-04-11 02:44:30 -07:00
udplite.c
xfrm4_input.c	include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h	2010-03-30 22:02:32 +09:00
xfrm4_mode_beet.c
xfrm4_mode_transport.c
xfrm4_mode_tunnel.c	include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h	2010-03-30 22:02:32 +09:00
xfrm4_output.c
xfrm4_policy.c	ipsec: Fix bogus bundle flowi	2010-03-03 01:04:37 -08:00
xfrm4_state.c
xfrm4_tunnel.c