Eric Dumazet b90e5794c5 net: dont call jump_label_dec from irq context ... Igor Maravic reported an error caused by jump_label_dec() being called from IRQ context : BUG: sleeping function called from invalid context at kernel/mutex.c:271 in_atomic(): 1, irqs_disabled(): 0, pid: 0, name: swapper 1 lock held by swapper/0: #0: (&n->timer){+.-...}, at: [<ffffffff8107ce90>] call_timer_fn+0x0/0x340 Pid: 0, comm: swapper Not tainted 3.2.0-rc2-net-next-mpls+ #1 Call Trace: <IRQ> [<ffffffff8104f417>] __might_sleep+0x137/0x1f0 [<ffffffff816b9a2f>] mutex_lock_nested+0x2f/0x370 [<ffffffff810a89fd>] ? trace_hardirqs_off+0xd/0x10 [<ffffffff8109a37f>] ? local_clock+0x6f/0x80 [<ffffffff810a90a5>] ? lock_release_holdtime.part.22+0x15/0x1a0 [<ffffffff81557929>] ? sock_def_write_space+0x59/0x160 [<ffffffff815e936e>] ? arp_error_report+0x3e/0x90 [<ffffffff810969cd>] atomic_dec_and_mutex_lock+0x5d/0x80 [<ffffffff8112fc1d>] jump_label_dec+0x1d/0x50 [<ffffffff81566525>] net_disable_timestamp+0x15/0x20 [<ffffffff81557a75>] sock_disable_timestamp+0x45/0x50 [<ffffffff81557b00>] __sk_free+0x80/0x200 [<ffffffff815578d0>] ? sk_send_sigurg+0x70/0x70 [<ffffffff815e936e>] ? arp_error_report+0x3e/0x90 [<ffffffff81557cba>] sock_wfree+0x3a/0x70 [<ffffffff8155c2b0>] skb_release_head_state+0x70/0x120 [<ffffffff8155c0b6>] __kfree_skb+0x16/0x30 [<ffffffff8155c119>] kfree_skb+0x49/0x170 [<ffffffff815e936e>] arp_error_report+0x3e/0x90 [<ffffffff81575bd9>] neigh_invalidate+0x89/0xc0 [<ffffffff81578dbe>] neigh_timer_handler+0x9e/0x2a0 [<ffffffff81578d20>] ? neigh_update+0x640/0x640 [<ffffffff81073558>] __do_softirq+0xc8/0x3a0 Since jump_label_{inc|dec} must be called from process context only, we must defer jump_label_dec() if net_disable_timestamp() is called from interrupt context. Reported-by: Igor Maravic <igorm@etf.rs> Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>		2011-11-29 00:26:25 -05:00
..
netfilter	net: dont call jump_label_dec from irq context	2011-11-29 00:26:25 -05:00
af_inet.c	net: introduce and use netdev_features_t for device features sets	2011-11-16 17:43:10 -05:00
ah4.c	ah: Don't return NET_XMIT_DROP on input.	2011-11-12 18:13:32 -05:00
arp.c	ipv4: Remove all uses of LL_ALLOCATED_SPACE	2011-11-18 14:37:08 -05:00
cipso_ipv4.c
datagram.c
devinet.c
esp4.c
fib_frontend.c
fib_lookup.h
fib_rules.c
fib_semantics.c
fib_trie.c
gre.c
icmp.c
igmp.c	Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net	2011-11-26 14:47:03 -05:00
inet_connection_sock.c	net: rename sk_clone to sk_clone_lock	2011-11-08 17:07:07 -05:00
inet_diag.c	Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net	2011-11-26 14:47:03 -05:00
inet_fragment.c
inet_hashtables.c
inet_lro.c
inet_timewait_sock.c
inetpeer.c
ip_forward.c	ipv4: Save nexthop address of LSRR/SSRR option to IPCB.	2011-11-23 19:19:32 -05:00
ip_fragment.c
ip_gre.c	ip_gre: Set needed_headroom dynamically again	2011-11-18 14:37:10 -05:00
ip_input.c
ip_options.c	ipv4: Save nexthop address of LSRR/SSRR option to IPCB.	2011-11-23 19:19:32 -05:00
ip_output.c
ip_sockglue.c	ipv4: PKTINFO doesnt need dst reference	2011-11-09 16:36:27 -05:00
ipcomp.c
ipconfig.c	ipv4: Remove all uses of LL_ALLOCATED_SPACE	2011-11-18 14:37:08 -05:00
ipip.c	net: better pcpu data alignment	2011-11-08 15:10:59 -05:00
ipmr.c
Kconfig
Makefile
netfilter.c
ping.c	ping: dont increment ICMP_MIB_INERRORS	2011-11-18 14:38:59 -05:00
proc.c	ipv4: reduce percpu needs for icmpmsg mibs	2011-11-09 16:04:20 -05:00
protocol.c
raw.c	ipv4: Remove all uses of LL_ALLOCATED_SPACE	2011-11-18 14:37:08 -05:00
route.c	ipv4: Don't use the cached pmtu informations for input routes	2011-11-26 14:29:52 -05:00
syncookies.c
sysctl_net_ipv4.c
tcp_bic.c
tcp_cong.c
tcp_cubic.c
tcp_diag.c
tcp_highspeed.c
tcp_htcp.c
tcp_hybla.c
tcp_illinois.c
tcp_input.c	tcp: skip cwnd moderation in TCP_CA_Open in tcp_try_to_open	2011-11-27 18:54:09 -05:00
tcp_ipv4.c	tcp: clear xmit timers in tcp_v4_syn_recv_sock()	2011-11-16 16:57:45 -05:00
tcp_lp.c
tcp_minisocks.c	net: remove ipv6_addr_copy()	2011-11-22 16:43:32 -05:00
tcp_output.c
tcp_probe.c
tcp_scalable.c
tcp_timer.c
tcp_vegas.c
tcp_vegas.h
tcp_veno.c
tcp_westwood.c
tcp_yeah.c
tcp.c	tcp: tcp_sendmsg() wrong access to sk_route_caps	2011-11-28 18:58:24 -05:00
tunnel4.c
udp_impl.h
udp.c	net: introduce and use netdev_features_t for device features sets	2011-11-16 17:43:10 -05:00
udplite.c
xfrm4_input.c
xfrm4_mode_beet.c
xfrm4_mode_transport.c
xfrm4_mode_tunnel.c
xfrm4_output.c
xfrm4_policy.c
xfrm4_state.c
xfrm4_tunnel.c