** Description changed: http://article.gmane.org/gmane.linux.kernel.commits.head/213639 " ARM: 5728/1: Proper prefetch abort handling on ARMv6 and ARMv7 Currently, on ARMv6 and ARMv7, if an application tries to execute code (or garbage) on non-executable page it hangs. It caused by incorrect prefetch abort handling. Now every prefetch abort processes as a translation fault. " - I believe the patch was merges in 2.6.32, so it is _probably_ already - applied in the dove tree (but it might be worth checking) + I believe the patch was merges in 2.6.32, so it is _probably_ already applied in the dove tree (but it might be worth checking) + [update: This bug does *not* affect the dove tree— confirmed] This patch doesn't appear critical; it just affects cases where processes are already crashing by trying to execute in invalid address space. I'm not aware of any real problems in lucid caused by this at present. Test case: int main(void) { ((void (*)(void))0xc0000000)(); } Desired result is SIGSEGV.
-- ARM: Incorrect prefetch abort handling can cause a spin instead of SIGSEGV https://bugs.launchpad.net/bugs/567956 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
