kernel-packages team mailing list archive

[Enric Balletbo i Serra <1416351@xxxxxxxxxxxxxxxxxx>]

Public bug reported:

To reproduce the issue add a probe to the malloc function of libc

# sudo apt-get install libc6-dbg
# perf probe -x /lib/x86_64-linux-gnu/libc.so.6 malloc
Probe point 'malloc' not found.
  Error: Failed to add events.

It's not possible, to check if function exists just

# perf probe -x /lib/x86_64-linux-gnu/libc.so.6 -F | grep malloc
malloc
malloc@plt
malloc_atfork
malloc_check
malloc_consolidate
malloc_hook_ini
malloc_info
malloc_printerr
mallochook
ptmalloc_init
ptmalloc_init.part.7
ptmalloc_lock_all
ptmalloc_unlock_all
ptmalloc_unlock_all2
tr_mallochook


$ cat /etc/lsb-release 
DISTRIB_ID=Ubuntu
DISTRIB_RELEASE=14.10
DISTRIB_CODENAME=utopic
DISTRIB_DESCRIPTION="Ubuntu 14.10"

$ uname -a
Linux collabora 3.16.0-29-generic #39-Ubuntu SMP Mon Dec 15 22:27:29 UTC 2014 x86_64 x86_64 x86_64 GNU/Linux

Package: linux-tools-common
Priority: optional
Section: kernel
Installed-Size: 221
Maintainer: Ubuntu Kernel Team <kernel-team@xxxxxxxxxxxxxxxx>
Architecture: all
Source: linux
Version: 3.16.0-23.31
Replaces: linux-tools (<= 2.6.32-16.25)
Filename: pool/main/l/linux/linux-tools-common_3.16.0-23.31_all.deb
Size: 82528
MD5sum: 7fa49442a8376adaf9a1f95da364e27b
SHA1: 07781c6ef66ed6fad70ce5fecea0a706f8329da2
SHA256: 506611d286247838db347cd1186521725ca3fc6be7e9d1007bd0895a185b9cfb

** Affects: linux (Ubuntu)
     Importance: Undecided
         Status: Incomplete


** Tags: utopic

** Tags added: utopic

** Description changed:

  To reproduce the issue add a probe to the malloc function of libc
  
  # sudo apt-get install libc6-dbg
  # perf probe -x /lib/x86_64-linux-gnu/libc.so.6 malloc
  Probe point 'malloc' not found.
-   Error: Failed to add events.
+   Error: Failed to add events.
  
  It's not possible, to check if function exists just
  
  # perf probe -x /lib/x86_64-linux-gnu/libc.so.6 -F | grep malloc
  malloc
  malloc@plt
  malloc_atfork
  malloc_check
  malloc_consolidate
  malloc_hook_ini
  malloc_info
  malloc_printerr
  mallochook
  ptmalloc_init
  ptmalloc_init.part.7
  ptmalloc_lock_all
  ptmalloc_unlock_all
  ptmalloc_unlock_all2
  tr_mallochook
+ 
+ 
+ $ cat /etc/lsb-release 
+ DISTRIB_ID=Ubuntu
+ DISTRIB_RELEASE=14.10
+ DISTRIB_CODENAME=utopic
+ DISTRIB_DESCRIPTION="Ubuntu 14.10"
+ 
+ $ uname -a
+ Linux collabora 3.16.0-29-generic #39-Ubuntu SMP Mon Dec 15 22:27:29 UTC 2014 x86_64 x86_64 x86_64 GNU/Linux
+ 
+ Package: linux-tools-common
+ Priority: optional
+ Section: kernel
+ Installed-Size: 221
+ Maintainer: Ubuntu Kernel Team <kernel-team@xxxxxxxxxxxxxxxx>
+ Architecture: all
+ Source: linux
+ Version: 3.16.0-23.31
+ Replaces: linux-tools (<= 2.6.32-16.25)
+ Filename: pool/main/l/linux/linux-tools-common_3.16.0-23.31_all.deb
+ Size: 82528
+ MD5sum: 7fa49442a8376adaf9a1f95da364e27b
+ SHA1: 07781c6ef66ed6fad70ce5fecea0a706f8329da2
+ SHA256: 506611d286247838db347cd1186521725ca3fc6be7e9d1007bd0895a185b9cfb

-- 
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Packages, which is subscribed to linux in Ubuntu.
https://bugs.launchpad.net/bugs/1416351

Title:
  perf doesn't work for userspace probes.

Status in linux package in Ubuntu:
  Incomplete

Bug description:
  To reproduce the issue add a probe to the malloc function of libc

  # sudo apt-get install libc6-dbg
  # perf probe -x /lib/x86_64-linux-gnu/libc.so.6 malloc
  Probe point 'malloc' not found.
    Error: Failed to add events.

  It's not possible, to check if function exists just

  # perf probe -x /lib/x86_64-linux-gnu/libc.so.6 -F | grep malloc
  malloc
  malloc@plt
  malloc_atfork
  malloc_check
  malloc_consolidate
  malloc_hook_ini
  malloc_info
  malloc_printerr
  mallochook
  ptmalloc_init
  ptmalloc_init.part.7
  ptmalloc_lock_all
  ptmalloc_unlock_all
  ptmalloc_unlock_all2
  tr_mallochook

  
  $ cat /etc/lsb-release 
  DISTRIB_ID=Ubuntu
  DISTRIB_RELEASE=14.10
  DISTRIB_CODENAME=utopic
  DISTRIB_DESCRIPTION="Ubuntu 14.10"

  $ uname -a
  Linux collabora 3.16.0-29-generic #39-Ubuntu SMP Mon Dec 15 22:27:29 UTC 2014 x86_64 x86_64 x86_64 GNU/Linux

  Package: linux-tools-common
  Priority: optional
  Section: kernel
  Installed-Size: 221
  Maintainer: Ubuntu Kernel Team <kernel-team@xxxxxxxxxxxxxxxx>
  Architecture: all
  Source: linux
  Version: 3.16.0-23.31
  Replaces: linux-tools (<= 2.6.32-16.25)
  Filename: pool/main/l/linux/linux-tools-common_3.16.0-23.31_all.deb
  Size: 82528
  MD5sum: 7fa49442a8376adaf9a1f95da364e27b
  SHA1: 07781c6ef66ed6fad70ce5fecea0a706f8329da2
  SHA256: 506611d286247838db347cd1186521725ca3fc6be7e9d1007bd0895a185b9cfb

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