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This kfree hangs my vm kernel. #2

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This kfree hangs my vm kernel. #2

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bcf29b7
This kfree hangs my vm kernel.
Oscar65 Sep 25, 2022
e6793fd
Dont work on my Oracle VM VirtualBox
Oscar65 Sep 25, 2022
8e58fe2
I forgot add set sleep = 1
Oscar65 Sep 25, 2022
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3 changes: 2 additions & 1 deletion Chapter03/shared-workqueue.c
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Original file line number Diff line number Diff line change
Expand Up @@ -22,8 +22,8 @@ static void work_handler(struct work_struct *work)
struct work_data, my_work);
pr_info("Work queue module handler: %s, data is %d\n", __FUNCTION__, my_data->the_data);
msleep(3000);
sleep = 1;
wake_up_interruptible(&my_data->my_wq);
kfree(my_data);
}

static int __init my_init(void)
Expand All @@ -40,6 +40,7 @@ static int __init my_init(void)
pr_info("I'm goint to sleep ...\n");
wait_event_interruptible(my_data->my_wq, sleep != 0);
pr_info("I am Waked up...\n");
kfree(my_data);
return 0;
}

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2 changes: 1 addition & 1 deletion Chapter03/user-invoke.c
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Expand Up @@ -20,7 +20,7 @@ static void delayed_shutdown(struct work_struct *work)
NULL,
};

call_usermodehelper(cmd, argv, envp, 0);
call_usermodehelper(cmd, argv, envp, UMH_WAIT_PROC);
}

static int __init my_shutdown_init( void )
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