<div dir="ltr"><div class="gmail_extra"><br><div class="gmail_quote">On Tue, Mar 18, 2014 at 11:35 AM, meenakshi aggarwal <span dir="ltr">&lt;<a href="mailto:meenu23688@gmail.com" target="_blank">meenu23688@gmail.com</a>&gt;</span> wrote:<br>
<blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left-width:1px;border-left-color:rgb(204,204,204);border-left-style:solid;padding-left:1ex"><div dir="ltr">Hi,<div><br></div><div>On reboot my system is showing kernel stack trace as :</div>
<div><br></div><div><div>root@ds:~# reboot</div><div><br></div><div>INIT: Sending processes the TERM signal</div><div>INIT</div>
<div>Stopping Dropbear SSH server: stopped /usr/sbin/dropbear (pid 2152)</div><div>dropbear.</div><div>Stopping network benchmark server: netserverstopped /usr/sbin/netserver (pid 2157)</div><div>.</div><div>Stopping system log daemon...0</div>

<div>Stopping kernel log daemon...0</div><div>Deconfiguring network interfaces... done.</div><div>Sending all processes the TERM signal...</div><div>Sending all processes the KILL signal...</div><div>Unmounting remote filesystems...</div>

<div>Deactivating swap...</div><div>Unmounting local filesystems...</div><div>Rebooting... Disabling non-boot CPUs ...</div><div><br></div><div>BUG: scheduling while atomic: reboot/2210/0x00000002<br></div><div>Modules linked in:</div>

<div>Preemption disabled at:[&lt;  (null)&gt;]   (null)</div><div><br></div><div>Call Trace:</div><div>[ebe09b20] [c0007094] show_stack+0x44/0x150 (unreliable)</div><div>[ebe09b60] [c064f5f4] __schedule_bug+0x84/0x9c</div>

<div>[ebe09b70] [c064c1c0] __schedule+0x510/0x5e0</div><div>[ebe09c80] [c064aea4] schedule_timeout+0x164/0x1d0</div><div>[ebe09cc0] [c064bb10] wait_for_common+0xd0/0x1b0</div><div>[ebe09d00] [c004db58] kthread_create_on_node+0xa8/0x140</div>

<div>[ebe09d70] [c00a42cc] _cpu_down+0x1ec/0x4e0</div><div>[ebe09de0] [c002d8a0] disable_nonboot_cpus+0x90/0x160</div><div>[ebe09e10] [c004044c] kernel_restart+0x1c/0x90</div><div>[ebe09e20] [c004069c] sys_reboot+0x1cc/0x250</div>

<div>[ebe09f40] [c000efe0] ret_from_syscall+0x0/0x3c</div><div>--- Exception: c01 at 0xff17684</div><div>    LR = 0x10000c00</div><div>BUG: scheduling while atomic: reboot/2210/0x00000002<br></div></div></div></blockquote>
<div><br></div><div>Looks Like some race condition.</div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left-width:1px;border-left-color:rgb(204,204,204);border-left-style:solid;padding-left:1ex"><div dir="ltr">
<div><div></div><div>Modules linked in:</div>
<div>Preemption disabled at:[&lt;  (null)&gt;]   (null)</div><div><br></div><div>Call Trace:</div><div>[ebe09b90] [c0007094] show_stack+0x44/0x150 (unreliable)</div><div>[ebe09bd0] [c064f5f4] __schedule_bug+0x84/0x9c</div>

<div>[ebe09be0] [c064c1c0] __schedule+0x510/0x5e0</div><div>[ebe09cf0] [c064aea4] schedule_timeout+0x164/0x1d0</div><div>[ebe09d30] [c064bb10] wait_for_common+0xd0/0x1b0</div><div>[ebe09d70] [c00a42f8] _cpu_down+0x218/0x4e0</div>

<div>[ebe09de0] [c002d8a0] disable_nonboot_cpus+0x90/0x160</div><div>[ebe09e10] [c004044c] kernel_restart+0x1c/0x90</div><div>[ebe09e20] [c004069c] sys_reboot+0x1cc/0x250</div><div>[ebe09f40] [c000efe0] ret_from_syscall+0x0/0x3c</div>

<div>--- Exception: c01 at 0xff17684</div><div>    LR = 0x10000c00</div></div><div><br></div><div><br></div><div>and so on.</div><div><br></div><div>Any kind of help will be appreciated.</div><div><br></div><div>Also i want to know the significance of <b>0x84/0x9c</b></div>

<div><b><br></b></div><div>&quot; __schedule_bug+<b>0x84/0x9c</b>&quot;</div></div>
<br></blockquote><div>This is offset(<b>0x84/0x9c</b>) from the function(__schedule_bug) where the next branching  was done or call to a function was made. In this case at address &quot; __schedule_bug+0x84/0x9c&quot; function &#39;show_stack&#39; was called.</div>
<div><br></div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left-width:1px;border-left-color:rgb(204,204,204);border-left-style:solid;padding-left:1ex">_______________________________________________<br>

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<br></blockquote></div><br><br clear="all"><div><br></div>-- <br>Thanks and Regards<br>Pramod<br>
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