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Bug#906728: linux-perf-4.17: "perf report" fails with "failed to process sample"

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  Bug#906728: linux-perf-4.17: "perf report" fails with "failed to process sample" Ralf Jung <post@ralfj.de> - 2018-08-20 11:10 +0200
    Bug#906728: linux-perf-4.17: "perf report" fails with "failed to process sample" Ben Hutchings <ben@decadent.org.uk> - 2019-05-24 17:30 +0200

#61864 — Bug#906728: linux-perf-4.17: "perf report" fails with "failed to process sample"

Package: linux-perf-4.17
Version: 4.17.14-1
Severity: important

Dear Maintainer,

fairly frequently, after recording perf data with

  perf record -F99 --call-graph dwarf [...]

when I then immediately do

  perf report

I get an error message saying

  failed to process sample
  0x44098e [0x8]: failed to process type: 68

making the recorded data unusable (at least so far I found no way to use it).
All I can do is record again, maybe with lower frequency, and hope that this time the problematic event does not happen...

I have rebooted the machine since the last kernel upgrade, so the perf tool and the running kernel should match exactly.

Kind regards,
Ralf

-- System Information:
Debian Release: buster/sid
  APT prefers testing
  APT policy: (990, 'testing'), (500, 'unstable-debug'), (500, 'testing-debug'), (100, 'unstable')
Architecture: amd64 (x86_64)
Foreign Architectures: i386

Kernel: Linux 4.17.0-1-amd64 (SMP w/8 CPU cores)
Locale: LANG=en_US.UTF-8, LC_CTYPE=en_US.UTF-8 (charmap=UTF-8), LANGUAGE=en_US.UTF-8 (charmap=UTF-8)
Shell: /bin/sh linked to /bin/dash
Init: systemd (via /run/systemd/system)
LSM: AppArmor: enabled

Versions of packages linux-perf-4.17 depends on:
ii  libbabeltrace1  1.5.6-1
ii  libc6           2.27-5
ii  libdw1          0.170-0.5
ii  libelf1         0.170-0.5
ii  liblzma5        5.2.2-1.3
ii  libnuma1        2.0.11-2.2
ii  libperl5.26     5.26.2-7
ii  libpython2.7    2.7.15-3
ii  libslang2       2.3.2-1+b1
ii  libunwind8      1.2.1-8
ii  zlib1g          1:1.2.11.dfsg-1

Versions of packages linux-perf-4.17 recommends:
ii  linux-base  4.5

Versions of packages linux-perf-4.17 suggests:
pn  linux-doc-4.17  <none>

-- no debconf information

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#64160

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On Fri, 2019-05-24 at 14:57 +0200, Vladimír Čunát wrote:
> Hello!  For others who stumble on this...
> 
> I got this message when my perf version didn't match the running kernel,
> and it disappeared when I fixed that.  (It was on a different distro
> than Debian - NixOS, but I don't expect distro is really relevant for
> this problem.)

Debian doesn't have that problem, because it uses a wrapper script to
select the right version for the running kernel.

Ben.

-- 
Ben Hutchings
This sentence contradicts itself - no actually it doesn't.

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