On Tue, Mar 18, 2014 at 11:35 AM, meenakshi aggarwal <meenu23688@xxxxxxxxx> wrote:
Hi,On reboot my system is showing kernel stack trace as :root@ds:~# rebootINIT: Sending processes the TERM signalINITStopping Dropbear SSH server: stopped /usr/sbin/dropbear (pid 2152)dropbear.Stopping network benchmark server: netserverstopped /usr/sbin/netserver (pid 2157).Stopping system log daemon...0Stopping kernel log daemon...0Deconfiguring network interfaces... done.Sending all processes the TERM signal...Sending all processes the KILL signal...Unmounting remote filesystems...Deactivating swap...Unmounting local filesystems...Rebooting... Disabling non-boot CPUs ...BUG: scheduling while atomic: reboot/2210/0x00000002Modules linked in:Preemption disabled at:[< (null)>] (null)Call Trace:[ebe09b20] [c0007094] show_stack+0x44/0x150 (unreliable)[ebe09b60] [c064f5f4] __schedule_bug+0x84/0x9c[ebe09b70] [c064c1c0] __schedule+0x510/0x5e0[ebe09c80] [c064aea4] schedule_timeout+0x164/0x1d0[ebe09cc0] [c064bb10] wait_for_common+0xd0/0x1b0[ebe09d00] [c004db58] kthread_create_on_node+0xa8/0x140[ebe09d70] [c00a42cc] _cpu_down+0x1ec/0x4e0[ebe09de0] [c002d8a0] disable_nonboot_cpus+0x90/0x160[ebe09e10] [c004044c] kernel_restart+0x1c/0x90[ebe09e20] [c004069c] sys_reboot+0x1cc/0x250[ebe09f40] [c000efe0] ret_from_syscall+0x0/0x3c--- Exception: c01 at 0xff17684LR = 0x10000c00BUG: scheduling while atomic: reboot/2210/0x00000002
Looks Like some race condition.
Modules linked in:Preemption disabled at:[< (null)>] (null)Call Trace:[ebe09b90] [c0007094] show_stack+0x44/0x150 (unreliable)[ebe09bd0] [c064f5f4] __schedule_bug+0x84/0x9c[ebe09be0] [c064c1c0] __schedule+0x510/0x5e0[ebe09cf0] [c064aea4] schedule_timeout+0x164/0x1d0[ebe09d30] [c064bb10] wait_for_common+0xd0/0x1b0[ebe09d70] [c00a42f8] _cpu_down+0x218/0x4e0[ebe09de0] [c002d8a0] disable_nonboot_cpus+0x90/0x160[ebe09e10] [c004044c] kernel_restart+0x1c/0x90[ebe09e20] [c004069c] sys_reboot+0x1cc/0x250[ebe09f40] [c000efe0] ret_from_syscall+0x0/0x3c--- Exception: c01 at 0xff17684LR = 0x10000c00and so on.Any kind of help will be appreciated.Also i want to know the significance of 0x84/0x9c" __schedule_bug+0x84/0x9c"
This is offset(0x84/0x9c) from the function(__schedule_bug) where the next branching was done or call to a function was made. In this case at address " __schedule_bug+0x84/0x9c" function 'show_stack' was called.
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Thanks and Regards
Pramod
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