------- Comment From heinz-werner_se...@de.ibm.com 2018-10-26 03:55 EDT------- IBM Bugzilla status-> closed, Fix Released
-- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu. https://bugs.launchpad.net/bugs/1777840 Title: uprobes: fix SIGSEGVs with setjmp/longjmp Status in Ubuntu on IBM z Systems: Fix Released Status in linux package in Ubuntu: Fix Released Status in linux source package in Bionic: Fix Released Bug description: == SRU Justification == This commit fixes SIGSEGVs with setjmp/longjmp. Symptom: Setting a user space return probe on a function that does not return because of a longjmp call may cause SIGSEGV or SIGILL. Problem: Userspace can do whatever it wants with its stack. Especially stack modifications performed with longjmp cannot be handled 100% correctly within the uprobes kernel part, which may lead to user space observed crashed. Solution: Implement arch_uretprobe_is_alive() which improves the situation a lot and works for many situations. This commit has also been cc'd to upstream stable, but it has not landed in Bionic as of yet. == Fix == 783c3b53b950 ("s390/uprobes: implement arch_uretprobe_is_alive()") == Regression Potential == Low. Limited to s390. The commit has also been cc'd to upstream stable, so it has had additional upstream review. == Test Case == A test kernel was built with this patch and tested by the original bug reporter. The bug reporter states the test kernel resolved the bug. Upstream-ID: 783c3b53b9506db3e05daacfe34e0287eebb09d8 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu-z-systems/+bug/1777840/+subscriptions -- Mailing list: https://launchpad.net/~kernel-packages Post to : kernel-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~kernel-packages More help : https://help.launchpad.net/ListHelp
