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linux/net/ipv6/netfilter
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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
..
ip6_queue.c net: dont call jump_label_dec from irq context 2011-11-29 00:26:25 -05:00
ip6_tables.c Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/kaber/nf-next-2.6 2011-04-19 11:24:06 -07:00
ip6t_ah.c netfilter: xtables: change hotdrop pointer to direct modification 2010-05-11 18:35:27 +02:00
ip6t_eui64.c netfilter: xtables: change hotdrop pointer to direct modification 2010-05-11 18:35:27 +02:00
ip6t_frag.c netfilter: xtables: change hotdrop pointer to direct modification 2010-05-11 18:35:27 +02:00
ip6t_hbh.c netfilter: xtables: change hotdrop pointer to direct modification 2010-05-11 18:35:27 +02:00
ip6t_ipv6header.c netfilter: xtables: deconstify struct xt_action_param for matches 2010-05-11 18:33:37 +02:00
ip6t_LOG.c Merge branch 'master' of master.kernel.org:/pub/scm/linux/kernel/git/davem/net-2.6 2011-02-19 19:17:35 -08:00
ip6t_mh.c netfilter: xtables: change hotdrop pointer to direct modification 2010-05-11 18:35:27 +02:00
ip6t_REJECT.c net: remove ipv6_addr_copy() 2011-11-22 16:43:32 -05:00
ip6t_rt.c netfilter: xtables: change hotdrop pointer to direct modification 2010-05-11 18:35:27 +02:00
ip6table_filter.c netfilter: cleanup printk messages 2010-05-13 15:02:08 +02:00
ip6table_mangle.c netfilter: ip6table_mangle: Fix set-but-unused variables. 2011-04-17 17:06:15 -07:00
ip6table_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
ip6table_security.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 netfilter: Remove NOTRACK/RAW dependency on NETFILTER_ADVANCED. 2011-11-23 16:07:00 -05:00
Makefile Net: ipv6: netfiliter: Makefile: Remove deprecated kbuild goal definitions 2010-11-22 08:16:12 -08:00
nf_conntrack_l3proto_ipv6.c netfilter: add more values to enum ip_conntrack_info 2011-06-06 01:35:10 +02:00
nf_conntrack_proto_icmpv6.c netfilter: nf_conntrack: fix ct refcount leak in l4proto->error() 2011-06-06 01:37:02 +02:00
nf_conntrack_reasm.c netfilter: Remove unnecessary OOM logging messages 2011-11-01 09:19:49 +01:00
nf_defrag_ipv6_hooks.c Fix common misspellings 2011-03-31 11:26:23 -03:00