Attaching patch that is being sent to Kernel Team by e-mail. ** Description changed:
+ SRU Justification: + + Impact: Calls to /libx32/ld-linux-x32.so.2 hang when using auditd + Fix: Upstream, a3c54931199565930d6d84f4c3456f6440aefd41 + Testcase: Comment #7 + + Old Description: + I'm running trusty on a bunch of machines, doing frequent dist-upgrades. My hosts have gcc-multilib installed. Yesterday, I noticed that initramfs generation was hanging. Today I investigated further and found out that what was hanging were the calls to /libx32/ld-linux-x32.so.2. This is triggered in initramfs generation because there are at some hooks that incorrectly use copy_exec to copy shell scripts into the initramfs image. In a working machine, when ldd encounters a shell script, it will first call the 64bit linker and since it fails, it will then call the 32bit linker which will also fail. However, in a machine affected by this bug, the second call will hang forever, preventing new image generation, and package updates in general, when this happens as a trigger for update-initramfs. Originally I thought this was related to the kernel version, since I was unable to reproduce in a freshly installed machine running -22 and was reproducing it in a machine running -20, but now I'm also reproducing it in a machine running -22, so it must be something else. I'm sorry I can't provide the exact cause right now, but I think it's worth noting that in some situation there might be a problem, and try to find out which those situations are. I now have one host running 3.13.0-22-generic, with libc6-x32=2.19-0ubuntu3, where doing ldd /usr/bin/ldd hangs, and another host, with the exact same kernel and libc6-x32 version where doing ldd /usr/bin/ldd produces the expected error message (not a dynamic executable). The main difference is that the first one was installed yesterday and the second one was installed today. Both are dist- upgraded to the latest version of everything. ** Patch added: "0001-Trusty-CVE-2014-3917-upstream-auditsc-audit_krule-ma.patch" https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1302605/+attachment/4162138/+files/0001-Trusty-CVE-2014-3917-upstream-auditsc-audit_krule-ma.patch -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1302605 Title: Calls to /libx32/ld-linux-x32.so.2 hang when using auditd To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1302605/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
