Bug 2185510

Summary:	The "bt pid" does not print enough stack trace
Product:	Red Hat Enterprise Linux 9	Reporter:	lijiang
Component:	crash	Assignee:	lijiang
Status:	ASSIGNED ---	QA Contact:	xiaoying yan <yiyan>
Severity:	unspecified	Docs Contact:
Priority:	unspecified
Version:	9.2	CC:	jieli, ruyang, swood
Target Milestone:	rc	Keywords:	Triaged
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Hardware:	Unspecified
OS:	Unspecified
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Description lijiang 2023-04-10 04:53:16 UTC

Description of problem:

> Hi, Crystal 
> 
> > logged in today), so you'll get the short version.  The crash tool is for
> > some reason having trouble dealing with a retpoline in __wake_up_common(). 
> > Someone should look into that.
> > 
> Could you please point out what problems the crash tool encountered? I would
> like to have a look and check if this can be improved in crash-utility, or
> may provide some helpful debug information for you.

With the vmcore in http://registry.kni-qe-0.lab.eng.rdu2.redhat.com:8080/images/bz2175676/127.0.0.1-2023-03-08-15:12:25/
I get this:

crash> bt 493113
PID: 493113   TASK: ff2e34ecbd3ca2c0  CPU: 27   COMMAND: "sriov_fec_daemo"
 #0 [ff77abc4e81cfb08] __schedule at ffffffff81b239cb
 #1 [ff77abc4e81cfb70] schedule at ffffffff81b23e2d
 #2 [ff77abc4e81cfb88] schedule_timeout at ffffffff81b2c9e8
    RIP: 000000000047cdbb  RSP: 000000c0000975a8  RFLAGS: 00000216
    RAX: ffffffffffffffda  RBX: 000000c00004e000  RCX: 000000000047cdbb
    RDX: 000000000000000c  RSI: 000000c000097798  RDI: 0000000000000009
    RBP: 000000c0000975f8   R8: 0000000000000001   R9: 000000c00098d680
    R10: 000000000000000c  R11: 0000000000000216  R12: 000000c000097688
    R13: 0000000000000000  R14: 000000c0006c3520  R15: 00007f5e359946b7
    ORIG_RAX: 0000000000000001  CS: 0033  SS: 002b
crash> 

The stack trace should go on well beyond that.  And yes, I still see it when building crash from upstream git.

The current issue was encountered/reported by Crystal.

(see bz2175676, comment#17 and comment#30).

Version-Release number of selected component (if applicable):


How reproducible:


Steps to Reproduce:
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Actual results:


Expected results:
The "bt pid" should print a full backtrace.

Additional info: