** Description changed: - The changes made in the following commit, which backported a number of - changes to the procps package in precise, result in various procps - utilities crashing with a SIGSEGV if the file2str function in - proc/readproc.c reads zero bytes. + [Impact] + + * various procps utilities crashing with a SIGSEGV if the file2str function in + proc/readproc.c when it reads zero bytes + + * This is a regression introduced with (LP: #1150413) + + * The upload checks for zero length reads and now returns -1 instead of 0, like it used + to. + + [Test Case] + + * This does not happen often enough to create a real testcase, but some users have + reported that repeatedly running top has occassionally exhibited this problem. + + [Regression Potential] + + * Minimal, as this reverts file2str to original behavior in the case of zero length + reads. + + [Other Info] + + * This patch is backported from upstream + + _________________________________________________________________________________________ + The changes made in the following commit, which backported a number of changes to the procps package in precise, result in various procps utilities crashing with a SIGSEGV if the file2str function in proc/readproc.c reads zero bytes. http://bazaar.launchpad.net/~ubuntu-branches/ubuntu/precise/procps /precise-updates/revision/61 This corresponds to the following procps package version: 1:3.2.8-11ubuntu6.1 Prior to this changeset, file2str would return -1 if the read failed; now it does not, which is not expected by other parts of the procps codebase, hence the crash. Upstream have fixed this issue in the following commit: https://www.gitorious.org/procps/procps/commit/526bc5dfa924177e68be0123bd67e3370955f924
-- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1242746 Title: SIGSEGV when file2str reads zero bytes To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/procps/+bug/1242746/+subscriptions -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
