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path: root/net/netfilter/xt_IDLETIMER.c (follow)
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2016-04-29netfilter: IDLETIMER: fix race condition when destroy the targetLiping Zhang1-0/+1
Workqueue maybe still in running while we destroy the IDLETIMER target, thus cause a use after free error, add cancel_work_sync() to avoid such situation. Signed-off-by: Liping Zhang <liping.zhang@spreadtrum.com> Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
2015-07-13netfilter: IDLETIMER: fix lockdep warningDmitry Torokhov1-0/+1
Dynamically allocated sysfs attributes should be initialized with sysfs_attr_init() otherwise lockdep will be angry with us: [ 45.468653] BUG: key ffffffc030fad4e0 not in .data! [ 45.468655] ------------[ cut here ]------------ [ 45.468666] WARNING: CPU: 0 PID: 1176 at /mnt/host/source/src/third_party/kernel/v3.18/kernel/locking/lockdep.c:2991 lockdep_init_map+0x12c/0x490() [ 45.468672] DEBUG_LOCKS_WARN_ON(1) [ 45.468672] CPU: 0 PID: 1176 Comm: iptables Tainted: G U W 3.18.0 #43 [ 45.468674] Hardware name: XXX [ 45.468675] Call trace: [ 45.468680] [<ffffffc0002072b4>] dump_backtrace+0x0/0x10c [ 45.468683] [<ffffffc0002073d0>] show_stack+0x10/0x1c [ 45.468688] [<ffffffc000a86cd4>] dump_stack+0x74/0x94 [ 45.468692] [<ffffffc000217ae0>] warn_slowpath_common+0x84/0xb0 [ 45.468694] [<ffffffc000217b84>] warn_slowpath_fmt+0x4c/0x58 [ 45.468697] [<ffffffc0002530a4>] lockdep_init_map+0x128/0x490 [ 45.468701] [<ffffffc000367ef0>] __kernfs_create_file+0x80/0xe4 [ 45.468704] [<ffffffc00036862c>] sysfs_add_file_mode_ns+0x104/0x170 [ 45.468706] [<ffffffc00036870c>] sysfs_create_file_ns+0x58/0x64 [ 45.468711] [<ffffffc000930430>] idletimer_tg_checkentry+0x14c/0x324 [ 45.468714] [<ffffffc00092a728>] xt_check_target+0x170/0x198 [ 45.468717] [<ffffffc000993efc>] check_target+0x58/0x6c [ 45.468720] [<ffffffc000994c64>] translate_table+0x30c/0x424 [ 45.468723] [<ffffffc00099529c>] do_ipt_set_ctl+0x144/0x1d0 [ 45.468728] [<ffffffc0009079f0>] nf_setsockopt+0x50/0x60 [ 45.468732] [<ffffffc000946870>] ip_setsockopt+0x8c/0xb4 [ 45.468735] [<ffffffc0009661c0>] raw_setsockopt+0x10/0x50 [ 45.468739] [<ffffffc0008c1550>] sock_common_setsockopt+0x14/0x20 [ 45.468742] [<ffffffc0008bd190>] SyS_setsockopt+0x88/0xb8 [ 45.468744] ---[ end trace 41d156354d18c039 ]--- Signed-off-by: Dmitry Torokhov <dtor@google.com> Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
2011-11-01netfilter: Remove unnecessary OOM logging messagesJoe Perches1-2/+0
Site specific OOM messages are duplications of a generic MM out of memory message and aren't really useful, so just delete them. Signed-off-by: Joe Perches <joe@perches.com> Signed-off-by: Patrick McHardy <kaber@trash.net> Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
2011-01-18netfilter: xtables: add missing aliases for autoloading via iptablesJan Engelhardt1-0/+2
Signed-off-by: Jan Engelhardt <jengelh@medozas.de>
2010-06-22netfilter: xt_IDLETIMER needs kdev_t.hRandy Dunlap1-0/+1
Add header file to fix build error: net/netfilter/xt_IDLETIMER.c:276: error: implicit declaration of function 'MKDEV' Signed-off-by: Randy Dunlap <randy.dunlap@oracle.com> Signed-off-by: Patrick McHardy <kaber@trash.net>
2010-06-15netfilter: xtables: idletimer target implementationLuciano Coelho1-0/+314
This patch implements an idletimer Xtables target that can be used to identify when interfaces have been idle for a certain period of time. Timers are identified by labels and are created when a rule is set with a new label. The rules also take a timeout value (in seconds) as an option. If more than one rule uses the same timer label, the timer will be restarted whenever any of the rules get a hit. One entry for each timer is created in sysfs. This attribute contains the timer remaining for the timer to expire. The attributes are located under the xt_idletimer class: /sys/class/xt_idletimer/timers/<label> When the timer expires, the target module sends a sysfs notification to the userspace, which can then decide what to do (eg. disconnect to save power). Cc: Timo Teras <timo.teras@iki.fi> Signed-off-by: Luciano Coelho <luciano.coelho@nokia.com> Signed-off-by: Patrick McHardy <kaber@trash.net>