Hung tasks in sisfim module

Issue

• Kernel log shows hung tasks in sisfim module
• Load Average increased, application services cannot start

Kernel shows message as below

kernel: INFO: task bash:26077 blocked for more than 120 seconds.
kernel: "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
kernel: bash          D 0000000000000002     0 25446  12045 0x00000084
kernel: ffff880768ecdce8 0000000000000082 0000000000000000 ffff88081abfbf60
kernel: ffff88081b51d980 ffff8808208f28c0 0000000000000003 ffffffffa032fd1d
kernel: ffff880768de3af8 ffff880768ecdfd8 000000000000fb88 ffff880768de3af8
kernel: Call Trace:
kernel: [<ffffffffa032fd1d>] ? filter_open+0xcd/0x110 [sisfim]
kernel: [<ffffffffa0334830>] ? hook_ext4_file_open+0x0/0x20 [sisfim]
kernel: [<ffffffff8150ebf5>] schedule_timeout+0x215/0x2e0
kernel: [<ffffffff8117e5b4>] ? nameidata_to_filp+0x54/0x70
kernel: [<ffffffff81277469>] ? cpumask_next_and+0x29/0x50
kernel: [<ffffffff8150e873>] wait_for_common+0x123/0x180
kernel: [<ffffffff81063330>] ? default_wake_function+0x0/0x20
kernel: [<ffffffff8150e98d>] wait_for_completion+0x1d/0x20
kernel: [<ffffffff8106515c>] sched_exec+0xdc/0xe0
kernel: [<ffffffff8118a140>] do_execve+0xe0/0x2c0
kernel: [<ffffffff810095ea>] sys_execve+0x4a/0x80
kernel: [<ffffffff8100b4ca>] stub_execve+0x6a/0xc0