Eric Dumazet bec4596b4e drop_monitor: dont sleep in atomic context ... drop_monitor calls several sleeping functions while in atomic context. BUG: sleeping function called from invalid context at mm/slub.c:943 in_atomic(): 1, irqs_disabled(): 0, pid: 2103, name: kworker/0:2 Pid: 2103, comm: kworker/0:2 Not tainted 3.5.0-rc1+ #55 Call Trace: [<ffffffff810697ca>] __might_sleep+0xca/0xf0 [<ffffffff811345a3>] kmem_cache_alloc_node+0x1b3/0x1c0 [<ffffffff8105578c>] ? queue_delayed_work_on+0x11c/0x130 [<ffffffff815343fb>] __alloc_skb+0x4b/0x230 [<ffffffffa00b0360>] ? reset_per_cpu_data+0x160/0x160 [drop_monitor] [<ffffffffa00b022f>] reset_per_cpu_data+0x2f/0x160 [drop_monitor] [<ffffffffa00b03ab>] send_dm_alert+0x4b/0xb0 [drop_monitor] [<ffffffff810568e0>] process_one_work+0x130/0x4c0 [<ffffffff81058249>] worker_thread+0x159/0x360 [<ffffffff810580f0>] ? manage_workers.isra.27+0x240/0x240 [<ffffffff8105d403>] kthread+0x93/0xa0 [<ffffffff816be6d4>] kernel_thread_helper+0x4/0x10 [<ffffffff8105d370>] ? kthread_freezable_should_stop+0x80/0x80 [<ffffffff816be6d0>] ? gs_change+0xb/0xb Rework the logic to call the sleeping functions in right context. Use standard timer/workqueue api to let system chose any cpu to perform the allocation and netlink send. Also avoid a loop if reset_per_cpu_data() cannot allocate memory : use mod_timer() to wait 1/10 second before next try. Signed-off-by: Eric Dumazet <edumazet@google.com> Cc: Neil Horman <nhorman@tuxdriver.com> Reviewed-by: Neil Horman <nhorman@tuxdriver.com> Signed-off-by: David S. Miller <davem@davemloft.net>		2012-06-04 11:42:01 -04:00
..
datagram.c	net: cleanup unsigned to unsigned int	2012-04-15 12:44:40 -04:00
dev_addr_lists.c	net: addr_list: add exclusive dev_uc_add and dev_mc_add	2012-04-15 13:06:04 -04:00
dev.c	net: napi_frags_skb() is static	2012-05-19 02:51:00 -04:00
drop_monitor.c	drop_monitor: dont sleep in atomic context	2012-06-04 11:42:01 -04:00
dst.c
ethtool.c	ethtool: Extend the ethtool API to obtain plugin module eeprom data	2012-05-10 02:22:17 +01:00
fib_rules.c	fib_rules: Stop using NLA_PUT*().	2012-04-02 04:33:44 -04:00
filter.c	Merge branch 'next' of git://git.kernel.org/pub/scm/linux/kernel/git/jmorris/linux-security	2012-05-21 20:27:36 -07:00
flow_dissector.c	net: flow_dissector.c missing include linux/export.h	2012-01-24 16:03:33 -05:00
flow.c
gen_estimator.c	Remove all #inclusions of asm/system.h	2012-03-28 18:30:03 +01:00
gen_stats.c	gen_stats: Stop using NLA_PUT*().	2012-04-02 04:33:44 -04:00
iovec.c	net: get rid of some pointless casts to sockaddr	2012-03-11 19:11:22 -07:00
link_watch.c
Makefile
neighbour.c	net: core: Use pr_<level>	2012-05-17 05:00:04 -04:00
net_namespace.c	net: core: Use pr_<level>	2012-05-17 05:00:04 -04:00
net-sysfs.c	net: cleanup unsigned to unsigned int	2012-04-15 12:44:40 -04:00
net-sysfs.h
net-traces.c
netevent.c
netpoll.c	Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net	2012-02-19 16:03:15 -05:00
netprio_cgroup.c	Merge branch 'for-3.5' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/cgroup	2012-05-22 17:40:19 -07:00
pktgen.c	Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net	2012-05-20 21:53:04 -04:00
request_sock.c
rtnetlink.c	net: Convert net_ratelimit uses to net_<level>_ratelimited	2012-05-15 13:45:03 -04:00
scm.c	Remove all #inclusions of asm/system.h	2012-03-28 18:30:03 +01:00
secure_seq.c	net: fix some sparse errors	2012-01-17 10:31:12 -05:00
skbuff.c	net: introduce skb_try_coalesce()	2012-05-19 18:34:57 -04:00
sock_diag.c	net: sock_diag_handler structs can be const	2012-04-25 20:46:59 -04:00
sock.c	net: sock: validate data_len before allocating skb in sock_alloc_send_pskb()	2012-05-31 18:22:45 -04:00
stream.c
sysctl_net_core.c	net: Delete all remaining instances of ctl_path	2012-04-20 21:22:30 -04:00
timestamping.c
user_dma.c
utils.c	net: Fixed coding style issues relating to braces.	2012-04-12 16:35:48 -04:00