<div dir="ltr"><div><div><div>Thank you Sanjeev,<br><br></div>But as of now i am not sure on how to reproduce the issue. So i have to deal with the dump.<br><br></div>Regards,<br></div>Manty<br></div><div class="gmail_extra"><br><div class="gmail_quote">On Tue, Jan 27, 2015 at 3:17 PM, sanjeev sharma <span dir="ltr"><<a href="mailto:sanjeevsharmaengg@gmail.com" target="_blank">sanjeevsharmaengg@gmail.com</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div dir="ltr"><div><div>Hello <br><br></div>you can try to print running task backtrack information in kernel/lockdep.c<br><br></div>Regards<span class="HOEnZb"><font color="#888888"><br>Sanjeev Sharma <br></font></span></div><div class="gmail_extra"><br><div class="gmail_quote"><span class="">On Tue, Jan 27, 2015 at 11:27 AM, manty kuma <span dir="ltr"><<a href="mailto:mantykuma@gmail.com" target="_blank">mantykuma@gmail.com</a>></span> wrote:<br></span><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div><div class="h5"><div dir="ltr"><div>Hi All,<br><br></div>Currently I am looking into an issue which is holding the printk lock(logbuf_lock)<br><div><div><br>logbuf_lock = {<br> raw_lock = {<br> owner = 0, <br> next = 4<br> }<br>}<br><br>I read about ticketing spinlocks to understand the above output. I understood that 4 cpu's are waiting for the lock while someone already has it.<br><br></div><div>I would like to know who has it? Is there a way I can know which process is acquiring a given spinlock? Is the information not stored in it?<br><br></div><div>I am using crash tool to analyse the dump<br></div><div><br></div><div>Regards,<br>Manty<br></div></div></div>
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