Hello Heitor, or anyone else affected, Accepted apt into trusty-proposed. The package will build now and be available at https://launchpad.net/ubuntu/+source/apt/1.0.1ubuntu2.20 in a few hours, and then in the -proposed repository.
Please help us by testing this new package. See https://wiki.ubuntu.com/Testing/EnableProposed for documentation on how to enable and use -proposed. Your feedback will aid us getting this update out to other Ubuntu users. If this package fixes the bug for you, please add a comment to this bug, mentioning the version of the package you tested and change the tag from verification-needed-trusty to verification-done-trusty. If it does not fix the bug for you, please add a comment stating that, and change the tag to verification-failed-trusty. In either case, without details of your testing we will not be able to proceed. Further information regarding the verification process can be found at https://wiki.ubuntu.com/QATeam/PerformingSRUVerification . Thank you in advance for helping! N.B. The updated package will be released to -updates after the bug(s) fixed by this package have been verified and the package has been in -proposed for a minimum of 7 days. ** Changed in: apt (Ubuntu Trusty) Status: In Progress => Fix Committed ** Tags added: verification-needed verification-needed-trusty -- You received this bug notification because you are a member of Ubuntu Touch seeded packages, which is subscribed to apt in Ubuntu. https://bugs.launchpad.net/bugs/1815129 Title: apt segfaults when generating cache file Status in apt package in Ubuntu: Fix Released Status in apt source package in Trusty: Fix Committed Status in apt package in Debian: Fix Released Bug description: [Impact] apt crashes (core dump) during cache creation [Description] When executing apt-cache several times on a memory constrained system, apt-cache can sometimes crash with a core dump file. This is related to mmap() failing allocations during cache generation, according to an upstream bug report (803417). There is an upstream patch for this bug (6789e01e do not segfault in cache generation on mmap failure) and it's included in the apt package for other series (see below), so we only need to backport it to Trusty. Upstream commit: https://salsa.debian.org/apt- team/apt/commit/6789e01e9370b3b7f65d52138c5657eaa712b4d1 $ git describe --contains 6789e01e9370 1.1_exp16~5 $ rmadison apt apt | 1.0.1ubuntu2 | trusty | source, ... apt | 1.0.1ubuntu2.19 | trusty-security | source, ... apt | 1.0.1ubuntu2.19 | trusty-updates | source, ... apt | 1.2.10ubuntu1 | xenial | source, ... apt | 1.6.1 | bionic | source, ... apt | 1.7.0 | cosmic | source, ... apt | 1.8.0~rc2 | disco | source, ... [Test Case] 1) Deploy a Trusty (14.04 LTS) vm w/ 128M 2) Fetch latest stress-ng src code 2.1) git clone git://kernel.ubuntu.com/cking/stress-ng 2.2) cd stress-ng 2.3) make clean 2.4) make 3) Stress the mmap() with stress-ng 3.1) ./stress-ng --brk 2 --mmap 5 --vm 1 --mmap-bytes 90% 4) Disable swap (if any) 4.1) swapoff -a 5) for i in `seq 1 10000`;do apt-cache policy vsftpd;done ... vsftpd: Installed: (none) Candidate: 3.0.2-1ubuntu2.14.04.1 Version table: 3.0.2-1ubuntu2.14.04.1 0 500 http://us.archive.ubuntu.com/ubuntu/ trusty-updates/main amd64 Packages 3.0.2-1ubuntu2 0 500 http://us.archive.ubuntu.com/ubuntu/ trusty/main amd64 Packages Segmentation fault (core dumped) Segmentation fault (core dumped) Segmentation fault (core dumped) Segmentation fault (core dumped) Segmentation fault (core dumped) Segmentation fault (core dumped) ... [Regression Potential] The regression potential for this should be low, as it's a change in the failure path for memory allocations. This shouldn't be triggered during normal usage, and we'll thoroughly test the patched package with autopkgtests and perform scripted runs in memory-constrained systems with stress-ng. We also have a confirmation from an impacted user that the upstream patch fixes their issue without further problems. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/apt/+bug/1815129/+subscriptions -- Mailing list: https://launchpad.net/~touch-packages Post to : touch-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~touch-packages More help : https://help.launchpad.net/ListHelp
