Re: Using abrt to automatically download and install debuginfo

[Mark Wielaard <mjw at redhat dot com>]

Hi Chris,

On Tue, 2011-08-09 at 14:16 -0400, Chris Meek wrote:
> $ stap -e 'probe process("/bin/gzip").function("*") { log(pp()) }'
> 
> If the gzip debuginfo is not already installed, SystemTap will call
> "abrt-action-install-debuginfo-to-abrt-cache" to first download and then 
> install the "gzip.debug"
> file into: "/var/cache/abrt-di/usr/lib/debug/" . SystemTap will then 
> look in this directory to use the
> debuginfo for the probe.
> 
> If you have any comments or suggestions, I'd like to hear them.

I tried it out on my system, but it doesn't seem to work. There is just
a small delay and then nothing... So it could provide a bit more
feedback.

$ /usr/local/install/systemtap/bin/stap -e 'probe
process("/bin/ls").function("main") { log(pp()); exit(); }'
WARNING: cannot find module /bin/ls debuginfo: No DWARF information
found
semantic error: no match while resolving probe point
process("/bin/ls").function("main")
Pass 2: analysis failed.  Try again with another '--vp 01' option.
Missing separate debuginfos, use: debuginfo-install
coreutils-8.12-3.fc17.x86_64 

Running with some -vvvvv I get:

$ /usr/local/install/systemtap/bin/stap -vvvvv -e 'probe process("/bin/ls").function("main") { log(pp()); exit(); }'
Systemtap translator/driver (version 1.7/0.152 commit release-1.6-89-g7b45b42 + changes)
Copyright (C) 2005-2011 Red Hat, Inc. and others
This is free software; see the source for copying conditions.
enabled features: LIBRPM LIBSQLITE3 NSS BOOST_SHARED_PTR TR1_UNORDERED_MAP NLS
Created temporary directory "/tmp/stapNZcnCm"
Session arch: x86_64 release: 3.1.0-0.rc1.git2.2.fc17.x86_64
Parsed kernel "/lib/modules/3.1.0-0.rc1.git2.2.fc17.x86_64/build/.config", containing 3770 tuples
Parsed kernel /lib/modules/3.1.0-0.rc1.git2.2.fc17.x86_64/build/Module.symvers, which contained 6057 vmlinux exports
Searched: " /usr/local/install/systemtap/share/systemtap/tapset/x86_64/*.stp ", found: 4, processed: 4
Searched: " /usr/local/install/systemtap/share/systemtap/tapset/*.stp ", found: 72, processed: 72
Pass 1: parsed user script and 76 library script(s) using 195488virt/22744res/2804shr kb, in 110usr/20sys/132real ms.
dwarf_builder::build for /bin/ls
parse 'main', func 'main'
pattern '/bin/ls' matches module '/bin/ls'
Extracting build ID.
Searching for debuginfo with build ID: '57f97a49fed0bc89c24b1e4917c6e862d858d6c8'.
Downloading and installing debuginfo with build ID: '57f97a49fed0bc89c24b1e4917c6e862d858d6c8' using /usr/bin/abrt-action-install-debuginfo-to-abrt-cache.
Running /bin/sh -c echo 57f97a49fed0bc89c24b1e4917c6e862d858d6c8 | /usr/bin/abrt-action-install-debuginfo-to-abrt-cache -y --ids=-
Spawn waitpid result (0x0): 0
focused on module '/bin/ls' = [0x0x400000, -0x0x81a3f8, bias 0x0 file /bin/ls ELF machine |x86_64 (code 62)
focused on module '/bin/ls'
WARNING: cannot find module /bin/ls debuginfo: No DWARF information found
Extracting build ID.
Searching for debuginfo with build ID: '57f97a49fed0bc89c24b1e4917c6e862d858d6c8'.
Downloading and installing debuginfo with build ID: '57f97a49fed0bc89c24b1e4917c6e862d858d6c8' using /usr/bin/abrt-action-install-debuginfo-to-abrt-cache.
Running /bin/sh -c echo 57f97a49fed0bc89c24b1e4917c6e862d858d6c8 | /usr/bin/abrt-action-install-debuginfo-to-abrt-cache -y --ids=-
Spawn waitpid result (0x0): 0
semantic error: no match while resolving probe point process("/bin/ls").function("main")
deleting module_cache
Pass 2: analyzed script: 0 probe(s), 0 function(s), 0 embed(s), 0 global(s) using 198668virt/27620res/4628shr kb, in 420usr/460sys/900real ms.
Pass 2: analysis failed.  Try again with another '--vp 01' option.
Missing separate debuginfos, use: debuginfo-install coreutils-8.12-3.fc17.x86_64 
Running rm -rf /tmp/stapNZcnCm
Spawn waitpid result (0x0): 0

So it actually tries to run twice, but fails for some reason?

Running by hand give:

$ echo 57f97a49fed0bc89c24b1e4917c6e862d858d6c8
| /usr/bin/abrt-action-install-debuginfo-to-abrt-cache -y --ids=-
Coredump references 1 debuginfo files, 1 of them are not installed
Looking for needed packages in repositories
Packages to download: 1
Downloading 3.18Mb, installed size: 19.10Mb. Continue? [y/N] Download
cancelled by user
Missing debuginfo
file: /usr/lib/debug/.build-id/57/f97a49fed0bc89c24b1e4917c6e862d858d6c8.debug

That is strange, "Download cancelled by user"?

Seems something is broken. I can only make
abrt-action-install-debuginfo-to-abrt-cache work by doing:
$ echo 57f97a49fed0bc89c24b1e4917c6e862d858d6c8 > build_ids
$ abrt-action-install-debuginfo-to-abrt-cache
With or without -y, I have to answer the question about wanting to
download.

$ /usr/bin/abrt-action-install-debuginfo-to-abrt-cache -y
Coredump references 1 debuginfo files, 1 of them are not installed
Looking for needed packages in repositories
Packages to download: 1
Downloading 3.18Mb, installed size: 19.10Mb. Continue? [y/N] y
Downloading (1 of 1) coreutils-debuginfo-8.12-3.fc17.x86_64.rpm: 100%
Extracting cpio
from /tmp/abrt-tmp-debuginfo-2011-08-12-11:53:17.27655/coreutils-debuginfo-8.12-3.fc17.x86_64.rpm
Caching files from unpacked.cpio made from
coreutils-debuginfo-8.12-3.fc17.x86_64.rpm
Removing /tmp/abrt-tmp-debuginfo-2011-08-12-11:53:17.27655

Anyway, some more (verbose) output would be helpful.

Thanks,

Mark