netfilter: IDLETIMER: fix lockdep warning
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_c...
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95dd8653
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