Package: apt-cacher-ng
Version: 0.7.26-1
Severity: normal
Dear Maintainer,
When I was trying to import packages, the daemon kept crashing
unexpectedly without logging any useful messages. After some debugging,
I found that the hard disk had some bad sectors and was resulting in
some short reads. I have fixed the problem with the hard drive, and all
is working as expected again, but I think apt-cacher-ng should handle
this situation more gracefully. At the very least, it should output
some meaningful message before exiting.
>From my debugging and according the mmap() man page, I can tell you
that the daemon crashes because it uses memory-mapped I/O to read the
packages, but fails to handle the SIGBUS signal, in case of bad reads.
Specifically, the memory access violation occurred in the md5_append()
function, and the call stack was something like this:
md5_append()
csumMD5::add()
filereader::GetChecksum()
filereader::GetChecksum() [static]
tFingerPrint::ScanFile()
pkgimport::ProcessRegular()
Thanks,
Carlos Maddela
-- Package-specific info:
-- System Information:
Debian Release: jessie/sid
APT prefers unstable
APT policy: (990, 'unstable'), (500, 'testing')
Architecture: amd64 (x86_64)
Foreign Architectures: i386
Kernel: Linux 3.14-1-amd64 (SMP w/2 CPU cores)
Locale: LANG=en_US.UTF-8, LC_CTYPE=en_US.UTF-8 (charmap=UTF-8)
Shell: /bin/sh linked to /bin/dash
Versions of packages apt-cacher-ng depends on:
ii adduser 3.113+nmu3
ii debconf [debconf-2.0] 1.5.53
ii dpkg 1.17.10
ii init-system-helpers 1.19
ii libbz2-1.0 1.0.6-5
ii libc6 2.19-3
ii libgcc1 1:4.9.0-7
ii liblzma5 5.1.1alpha+20120614-2
ii libssl1.0.0 1.0.1h-3
ii libstdc++6 4.9.0-7
ii libwrap0 7.6.q-25
ii zlib1g 1:1.2.8.dfsg-1
Versions of packages apt-cacher-ng recommends:
ii avahi-daemon 0.6.31-4
ii ed 1.10-2
Versions of packages apt-cacher-ng suggests:
ii curl 7.37.0-1+b1
ii doc-base 0.10.5
ii libfuse2 2.9.3-12
ii wget 1.15-1+b1
-- Configuration Files:
/etc/apt-cacher-ng/acng.conf changed [not included]
/etc/apt-cacher-ng/security.conf [Errno 13] Permission denied:
u'/etc/apt-cacher-ng/security.conf'
-- debconf information excluded
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