crashes with Permission denied: '/proc/5177/exe'

[Juan Pablo Salazar Bertín]

Binary package hint: apport

snifer@snifer-laptop:~$ pidof gdm
5177 5176
snifer@snifer-laptop:~$ ubuntu-bug -P 5177
Traceback (most recent call last):
  File "/usr/share/apport/apport-gtk", line 252, in <module>
    app.run_argv()
  File "/var/lib/python-support/python2.5/apport/ui.py", line 230, in run_argv
    self.run_report_bug()
  File "/var/lib/python-support/python2.5/apport/ui.py", line 212, in run_report_bug
    self.report.add_proc_info(self.options.pid)
  File "/var/lib/python-support/python2.5/apport/report.py", line 370, in add_proc_info
    self['ExecutablePath'] = os.readlink('/proc/' + pid + '/exe')
OSError: [Errno 13] Permission denied: '/proc/5177/exe'

ProblemType: Bug
ApportLog:
 apport (pid 5894) Mon Jun 18 22:41:48 2007: called for pid 5892, signal 11
 apport (pid 5894) Mon Jun 18 22:41:49 2007: executable: /usr/bin/gdm-signal (command line "gdm-signal -help")
 modinfo: could not open cdrom: No such device
 modinfo: could not open cdrom: No such device
 apport (pid 5894) Mon Jun 18 22:41:49 2007: wrote report /var/crash/_usr_bin_gdm-signal.1000.crash
Architecture: i386
Date: Tue Jun 19 00:33:31 2007
DistroRelease: Ubuntu 7.10
Package: apport 0.84
PackageArchitecture: all
SourcePackage: apport
Uname: Linux snifer-laptop 2.6.22-6-generic #1 SMP Fri Jun 1 19:24:12 GMT 2007 i686 GNU/Linux

[Juan Pablo Salazar Bertín (snifer)]

Also confirmed in Feisty, apport version: 0.76.1.

snifer@snifer-laptop:~$ pidof gdm
5072 5069
snifer@snifer-laptop:~$ ubuntu-bug -P 5072
Traceback (most recent call last):
  File "/usr/share/apport/apport-gtk", line 247, in <module>
    app.run_argv()
  File "/var/lib/python-support/python2.5/apport/ui.py", line 250, in run_argv
    self.run_report_bug()
  File "/var/lib/python-support/python2.5/apport/ui.py", line 232, in run_report_bug
    self.report.add_proc_info(self.options.pid)
  File "/var/lib/python-support/python2.5/apport/report.py", line 329, in add_proc_info
    self['ExecutablePath'] = os.readlink('/proc/' + pid + '/exe')
OSError: [Errno 13] Permission denied: '/proc/5072/exe'

[Juan Pablo Salazar Bertín (snifer)]

Still present in version 0.85 (gutsy):

snifer@snifer-laptop:~$ pidof gdm
5094 5093
snifer@snifer-laptop:~$ ubuntu-bug -P 5094
Traceback (most recent call last):
  File "/usr/share/apport/apport-gtk", line 252, in <module>
    app.run_argv()
  File "/var/lib/python-support/python2.5/apport/ui.py", line 230, in run_argv
    self.run_report_bug()
  File "/var/lib/python-support/python2.5/apport/ui.py", line 212, in run_report_bug
    self.report.add_proc_info(self.options.pid)
  File "/var/lib/python-support/python2.5/apport/report.py", line 370, in add_proc_info
    self['ExecutablePath'] = os.readlink('/proc/' + pid + '/exe')
OSError: [Errno 13] Permission denied: '/proc/5094/exe'

[Martin Pitt (pitti)]

Thank you for your bug report. I have all information I need now. I will fix it soon.

Note to self: This happens when using the GUI in bug filing mode on a process that does not run as yourself. It should print a proper error message and suggest sudo/su.

[Martin Pitt (pitti)]

apport (0.91) gutsy; urgency=low

  * bin/apport: Remove code that supported the Edgy kernel way of core dump
    passing. Also factorize the CORE_REAL_RLIM evaluation, since it is likely
    to change in the near future.
  * apport/crashdb_impl/launchpad.py, close_duplicate(): Delete some
    attachments, as specified in apport-crash-duplicates spec, and make the
    bug public afterwards.
  * apport/crashdb_impl/launchpad.py, close_duplicate(): If the master bug is
    already duped to yet another bug, mark the bug to that one instead of the
    master.
  * apport/crashdb.py: Split out duplicate_db_last_consolidation() for getting
    the date (or seconds since) the last consolidation, so that we can use it
    externally.
  * apport/crashdb.py: Add duplicate_db_change_master_id() to change the
    master ID of a crash. Add test case to apport/crashdb_impl/memory.py.
  * Add bin/dupdb-admin: Initial version of duplicate db CLI app; can dump the
    db, display consolidation state, and change master bug IDs for now. Ship
    it in apport-retrace.
  * apport/crashdb.py, duplicate_db_last_consolidation(): Fix timedelta
    seconds calculation to actually take the days into account, too.
  * bin/crash-digger: Fix dumping of dup db after consolidation.
  * apport/ui.py:
    - test_run_report_bug_package(): Add test case for calling the UI in bug
      filing mode with an invalid package name.
    - run_report_bug(): Do not crash on invalid package name, generate an
      error message instead. (LP: #123644)
  * apport/fileutils.py, mark_report_seen(): Do not crash if the file has
    already been deleted underneath us. (LP: #122347)
  * apport/ui.py, run_report_bug(): Do not crash if the target process runs as
    a different user. Print a proper error message instead. Add test case
    test_run_report_bug_noperm_pid(). (LP: #121121)
  * apport/fileutils.py, likely_packaged(): Ignore /var/lib/schroot. Add test
    case. (LP: #122859)
  * apport/ui.py, open_url(): Intercept weird race condition for os.close()
    trying to close an already invalidated fd. (LP: #123180)

  Merge the fedora branch, thanks to Will Woods <email address hidden>:

  * Add apport.init.fedora: Fedora specific init script.
  * Add apport.spec: RPM build recipe.
  * Add backends/packaging_rpm.py: Partial implementation of the packaging
    backend for RPM which applies to all RPM-based distros.
  * Add backends/packaging_fedora.py: Concrete packaging backend
    implementation for Fedora.
  * apport/elfcore.py: Classes for parsing general ELF files, and information
    from core dumps.
  * bin/apport: Fall back to reading signal number and PID directly from the
    core file (via elfcore.py) if CORE_SIGNAL and CORE_PID are not defined (i.
    e. when running on a non-Ubuntu kernel).
  * crashdb.conf: Add stanzas for Fedora and a 'debug' database which uses the
    'memory' crashdb implementation.

 -- Martin Pitt <email address hidden> Sat, 14 Jul 2007 15:08:35 +0200