After discussions the below was the recommendation: "Below are the list of upstream commits that rewrites the machine check:
a68c33f powerpc: Fix endian issues in power7/8 machine check handler 30c8263 Move precessing of MCE queued event out from syscall exit path. 4e243b7 powerpc: Fix "attempt to move .org backwards" error b63a0ff powerpc/powernv: Machine check exception handling. 28446de powerpc/powernv: Remove machine check handling in OPAL. b5ff421 powerpc/book3s: Queue up and process delayed MCE events. 36df96f powerpc/book3s: Decode and save machine check event. ae744f3 powerpc/book3s: Flush SLB/TLBs if we get SLB/TLB machine check errors on e22a227 powerpc/book3s: Flush SLB/TLBs if we get SLB/TLB machine check errors on 0440705 powerpc/book3s: Add flush_tlb operation in cpu_spec. 4c70341 powerpc/book3s: Introduce a early machine check hook in cpu_spec. 1c51089 powerpc/book3s: Return from interrupt if coming from evil context. 1e9b450 powerpc/book3s: handle machine check in Linux host. 729b0f7 powerpc/book3s: Introduce exclusive emergency stack for machine check ex b14a7253 powerpc/book3s: Split the common exception prolog logic into two sectio Additional commits that are in linux-next: ece980f powerpc/book3s: Fix CFAR clobbering issue in machine check handler. 55672ec powerpc/book3s: Recover from MC in sapphire on SCOM read via MMIO. Beloe is the link to a critical fix that I posted to ppc-devel yesterday: https://lists.ozlabs.org/pipermail/linuxppc-dev/2014-March/116447.html There is one more critical fix in machine handling path on its way, which I will post soon to ppc-devel after the tests. Will send you the link as soon as I post that to the ppc-devel and the commit ids once available upstream." -- 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/1301424 Title: powerpc: opal machine checks lead to kernel oops and application SIGSEGV Status in “linux” package in Ubuntu: Fix Committed Status in “linux” source package in Trusty: Fix Committed Bug description: We're suffering kernel Oopses on multiple Power machines running Ubuntu 14.04 beta levels, with kernels ranging from (at least) 3.13.0-16 through 3.13.0-19. We are running Ubuntu directly on top of OPAL, without KVM. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1301424/+subscriptions -- Mailing list: https://launchpad.net/~kernel-packages Post to : [email protected] Unsubscribe : https://launchpad.net/~kernel-packages More help : https://help.launchpad.net/ListHelp
