Re: 2.6.26-rc2-mm1 - machine stuck while booting up with CONFIG_FTRACE_STARTUP_TEST enabled

[Kamalesh Babulal <kamalesh@linux.vnet.ibm.com>]

Steven Rostedt wrote:
> Kamalesh Babulal wrote:
>> Hi Andrew,
>>
>> The 2.6.26-rc2-mm1 kernel gets stuck, while booting up on x86_64 machine,
>> with the CONFIG_FTRACE_STARTUP_TEST enabled. The following .config
>> options related to FTRACE are enabled. 
>>
>> CONFIG_FTRACE_SELFTEST=y
>> CONFIG_FTRACE_STARTUP_TEST=y
>> CONFIG_FTRACE=y
>> CONFIG_HAVE_FTRACE=y
>> CONFIG_DYNAMIC_FTRACE=y
>>
> 
> [...]
> 
>> Built 1 zonelists in Zone order, mobility grouping on.  Total pages: 1805035
>> Policy zone: Normal
>> Kernel command line: root=/dev/sda1 ro console=tty0 console=ttyS0,38400n1 noapci IDENT=1211176695
> 
> Hi, could you do nmi_watchdog=1 and see if that gives you a stack dump?
> 
> Thanks.
> 
> -- Steve

Hi Steven,

Passing nmi_watchdog=1 did not help in getting any extra information, over the previous
console log. The boot up message is stuck exactly at the same place.

> 
> [...]
> 
>> checking if image is initramfs... it is
>> Freeing initrd memory: 1466k freed
>> audit: initializing netlink socket (disabled)
>> type=2000 audit(1211176950.517:1): initialized
>> Testing tracer sched_switch: PASSED
>> Testing tracer sysprof: PASSED
>> Testing tracer ftrace: 
>>
> 

-- 
Thanks & Regards,
Kamalesh Babulal,
Linux Technology Center,
IBM, ISTL.