Bug 182519

Summary: Have elfutil also search /lib/modules/`uname -r`/build/vmlinux
Product: [Fedora] Fedora Reporter: William Cohen <wcohen>
Component: elfutilsAssignee: Roland McGrath <roland>
Status: CLOSED NOTABUG QA Contact:
Severity: medium Docs Contact:
Priority: medium    
Version: 5Keywords: FutureFeature
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OS: Linux   
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Fixed In Version: Doc Type: Enhancement
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Last Closed: 2006-07-12 21:14:35 UTC Type: ---
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oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
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Description Flags
add /lib/modules/`uname -r`/build/vmlinux to places to check none

Description William Cohen 2006-02-22 23:23:29 UTC 
Description of problem:


SystemTap uses elfutils to find the kernel information. The current set of paths
searched works fine for stock RPMs installed:

- systemtap looks for the debug info in these locations:
  /boot/vmlinux-`uname -r`
  /usr/lib/debug/lib/modules/`uname -r`/vmlinux
  /lib/modules/`uname -r`/vmlinux


However, for locally built custombuild kernels elfutils should also check in
/lib/modules/`uname -r`/build/vmlinux

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

elfutils-0.119


How reproducible:

Always

Steps to Reproduce:
1. Build kernel locally, e.g. make
2. Install kernel, "make modules_install install"
3. Boot locally built kernel
4. Uses systemtap to attempt to place probe in kernel
  
Actual results:

systemtap can't find vmlinux file

Expected results:

systemtap finds vmlinux and instruments kernel

Additional info:
Comment 1 William Cohen 2006-06-20 19:48:24 UTC 
Created attachment 131219 [details]
add /lib/modules/`uname -r`/build/vmlinux to places to check
Comment 2 Roland McGrath 2006-07-12 21:14:35 UTC 
The right fix is for systemtap to use more customized interfaces.