[Bug 1953720] [NEW] OSError: [Errno 30] Read-only file system: '/var/crash/...

Ralf Hildebrandt 1953720 at bugs.launchpad.net
Thu Dec 9 08:44:46 UTC 2021 

Public bug reported:

Dec  6 12:02:32 mail-cbf-int pyzor[2966924]: Traceback (most recent call last):
Dec  6 12:02:32 mail-cbf-int pyzor[2966924]:   File "/usr/bin/pyzor", line 408, in <module>
Dec  6 12:02:32 mail-cbf-int pyzor[2966924]:     main()
Dec  6 12:02:32 mail-cbf-int pyzor[2966924]:   File "/usr/bin/pyzor", line 152, in main
Dec  6 12:02:32 mail-cbf-int pyzor[2966924]:     if not dispatch(client, servers, config):
Dec  6 12:02:32 mail-cbf-int pyzor[2966924]:   File "/usr/bin/pyzor", line 239, in check
Dec  6 12:02:32 mail-cbf-int pyzor[2966924]:     send_digest(digested, mock_runner, servers)
Dec  6 12:02:32 mail-cbf-int pyzor[2966924]:   File "/usr/bin/pyzor", line 262, in send_digest
Dec  6 12:02:32 mail-cbf-int pyzor[2966924]:     _send_digest(runner, servers[0], digested)
Dec  6 12:02:32 mail-cbf-int pyzor[2966924]:   File "/usr/bin/pyzor", line 253, in _send_digest
Dec  6 12:02:32 mail-cbf-int pyzor[2966924]:     runner.run(server, (digested, server))
Dec  6 12:02:32 mail-cbf-int pyzor[2966924]:   File "/usr/lib/python3/dist-packages/pyzor/client.py", line 258, in run
Dec  6 12:02:32 mail-cbf-int pyzor[2966924]:     response = self.routine(*args, **kwargs)
Dec  6 12:02:32 mail-cbf-int pyzor[2966924]:   File "/usr/lib/python3/dist-packages/pyzor/client.py", line 120, in _mock_check
Dec  6 12:02:32 mail-cbf-int pyzor[2966924]:     msg = (b"Code: %s\nDiag: OK\nPV: %s\nThread: 1024\nCount: 0\n"
Dec  6 12:02:32 mail-cbf-int pyzor[2966924]: TypeError: %b requires a bytes-like object, or an object that implements __bytes__, not 'int'
Dec  6 12:02:32 mail-cbf-int pyzor[2966924]: Error in sys.excepthook:
Dec  6 12:02:32 mail-cbf-int pyzor[2966924]: Traceback (most recent call last):
Dec  6 12:02:32 mail-cbf-int pyzor[2966924]:   File "/usr/lib/python3/dist-packages/apport_python_hook.py", line 153, in apport_excepthook
Dec  6 12:02:32 mail-cbf-int pyzor[2966924]:     with os.fdopen(os.open(pr_filename,
Dec  6 12:02:32 mail-cbf-int pyzor[2966924]: OSError: [Errno 30] Read-only file system: '/var/crash/_usr_bin_pyzor.122.crash'

1) due to an encoding error, pyzor is throwing an exception.
2) /usr/lib/python3/dist-packages/apport_python_hook.py is the exception handler invoked (belonging to the python3-apport package)
3) This exception handler tries to write to /var/crash/_usr_bin_pyzor.122.crash, which fails

I checked the permissions:

# ls -l /var/crash
total 0

# ls -ld /var/crash
drwxrwxrwt 2 root root 4096 Dec  8 16:45 /var/crash

# ls -ld /var/
drwxr-xr-x 18 root root 4096 Jun 23  2020 /var/

# ls -ld /
drwxr-xr-x 24 root root 4096 Nov 30 06:19 /

/var/crash is sticky, so why can't it write?

# cat /proc/mounts  |fgrep crash
#

ProblemType: Bug
DistroRelease: Ubuntu 20.04
Package: python3-apport 2.20.11-0ubuntu27.21
ProcVersionSignature: Ubuntu 5.11.0-36.40~20.04.1-generic 5.11.22
Uname: Linux 5.11.0-36-generic x86_64
ApportLog:
 
ApportVersion: 2.20.11-0ubuntu27.21
Architecture: amd64
CasperMD5CheckResult: skip
Date: Thu Dec  9 09:39:40 2021
PackageArchitecture: all
ProcEnviron:
 TERM=xterm-256color
 PATH=(custom, no user)
 XDG_RUNTIME_DIR=<set>
 LANG=en_US.UTF-8
 SHELL=/bin/bash
SourcePackage: apport
UpgradeStatus: Upgraded to focal on 2021-04-07 (245 days ago)

** Affects: apport (Ubuntu)
     Importance: Undecided
         Status: New


** Tags: amd64 apport-bug focal third-party-packages

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https://bugs.launchpad.net/bugs/1953720

Title:
  OSError: [Errno 30] Read-only file system: '/var/crash/...

Status in apport package in Ubuntu:
  New

Bug description:
  Dec  6 12:02:32 mail-cbf-int pyzor[2966924]: Traceback (most recent call last):
  Dec  6 12:02:32 mail-cbf-int pyzor[2966924]:   File "/usr/bin/pyzor", line 408, in <module>
  Dec  6 12:02:32 mail-cbf-int pyzor[2966924]:     main()
  Dec  6 12:02:32 mail-cbf-int pyzor[2966924]:   File "/usr/bin/pyzor", line 152, in main
  Dec  6 12:02:32 mail-cbf-int pyzor[2966924]:     if not dispatch(client, servers, config):
  Dec  6 12:02:32 mail-cbf-int pyzor[2966924]:   File "/usr/bin/pyzor", line 239, in check
  Dec  6 12:02:32 mail-cbf-int pyzor[2966924]:     send_digest(digested, mock_runner, servers)
  Dec  6 12:02:32 mail-cbf-int pyzor[2966924]:   File "/usr/bin/pyzor", line 262, in send_digest
  Dec  6 12:02:32 mail-cbf-int pyzor[2966924]:     _send_digest(runner, servers[0], digested)
  Dec  6 12:02:32 mail-cbf-int pyzor[2966924]:   File "/usr/bin/pyzor", line 253, in _send_digest
  Dec  6 12:02:32 mail-cbf-int pyzor[2966924]:     runner.run(server, (digested, server))
  Dec  6 12:02:32 mail-cbf-int pyzor[2966924]:   File "/usr/lib/python3/dist-packages/pyzor/client.py", line 258, in run
  Dec  6 12:02:32 mail-cbf-int pyzor[2966924]:     response = self.routine(*args, **kwargs)
  Dec  6 12:02:32 mail-cbf-int pyzor[2966924]:   File "/usr/lib/python3/dist-packages/pyzor/client.py", line 120, in _mock_check
  Dec  6 12:02:32 mail-cbf-int pyzor[2966924]:     msg = (b"Code: %s\nDiag: OK\nPV: %s\nThread: 1024\nCount: 0\n"
  Dec  6 12:02:32 mail-cbf-int pyzor[2966924]: TypeError: %b requires a bytes-like object, or an object that implements __bytes__, not 'int'
  Dec  6 12:02:32 mail-cbf-int pyzor[2966924]: Error in sys.excepthook:
  Dec  6 12:02:32 mail-cbf-int pyzor[2966924]: Traceback (most recent call last):
  Dec  6 12:02:32 mail-cbf-int pyzor[2966924]:   File "/usr/lib/python3/dist-packages/apport_python_hook.py", line 153, in apport_excepthook
  Dec  6 12:02:32 mail-cbf-int pyzor[2966924]:     with os.fdopen(os.open(pr_filename,
  Dec  6 12:02:32 mail-cbf-int pyzor[2966924]: OSError: [Errno 30] Read-only file system: '/var/crash/_usr_bin_pyzor.122.crash'

  1) due to an encoding error, pyzor is throwing an exception.
  2) /usr/lib/python3/dist-packages/apport_python_hook.py is the exception handler invoked (belonging to the python3-apport package)
  3) This exception handler tries to write to /var/crash/_usr_bin_pyzor.122.crash, which fails

  I checked the permissions:

  # ls -l /var/crash
  total 0

  # ls -ld /var/crash
  drwxrwxrwt 2 root root 4096 Dec  8 16:45 /var/crash

  # ls -ld /var/
  drwxr-xr-x 18 root root 4096 Jun 23  2020 /var/

  # ls -ld /
  drwxr-xr-x 24 root root 4096 Nov 30 06:19 /

  /var/crash is sticky, so why can't it write?

  # cat /proc/mounts  |fgrep crash
  #

  ProblemType: Bug
  DistroRelease: Ubuntu 20.04
  Package: python3-apport 2.20.11-0ubuntu27.21
  ProcVersionSignature: Ubuntu 5.11.0-36.40~20.04.1-generic 5.11.22
  Uname: Linux 5.11.0-36-generic x86_64
  ApportLog:
   
  ApportVersion: 2.20.11-0ubuntu27.21
  Architecture: amd64
  CasperMD5CheckResult: skip
  Date: Thu Dec  9 09:39:40 2021
  PackageArchitecture: all
  ProcEnviron:
   TERM=xterm-256color
   PATH=(custom, no user)
   XDG_RUNTIME_DIR=<set>
   LANG=en_US.UTF-8
   SHELL=/bin/bash
  SourcePackage: apport
  UpgradeStatus: Upgraded to focal on 2021-04-07 (245 days ago)

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