Re: [PATCH V14 01/10] acpi: apei: read ack upon ghes record consumption

2017-04-12 Thread Borislav Petkov
On Tue, Mar 28, 2017 at 01:30:31PM -0600, Tyler Baicar wrote: > A RAS (Reliability, Availability, Serviceability) controller > may be a separate processor running in parallel with OS > execution, and may generate error records for consumption by > the OS. If the RAS controller produces multiple

Re: [PATCH V14 03/10] efi: parse ARM processor error

2017-04-12 Thread Borislav Petkov
On Tue, Mar 28, 2017 at 01:30:33PM -0600, Tyler Baicar wrote: > Add support for ARM Common Platform Error Record (CPER). > UEFI 2.6 specification adds support for ARM specific > processor error information to be reported as part of the > CPER records. This provides more detail on for processor

Re: kvm/arm64: use-after-free in kvm_unmap_hva_handler/unmap_stage2_pmds

2017-04-12 Thread Andrey Konovalov
On Wed, Apr 12, 2017 at 8:43 PM, Marc Zyngier wrote: > On 12/04/17 17:19, Andrey Konovalov wrote: > > Hi Andrey, > >> Apparently this wasn't fixed, I've got this report again on >> linux-next-c4e7b35a3 (Apr 11), which includes 8b3405e34 "kvm: >> arm/arm64: Fix locking for

Re: kvm/arm64: use-after-free in kvm_unmap_hva_handler/unmap_stage2_pmds

2017-04-12 Thread Marc Zyngier
On 12/04/17 17:19, Andrey Konovalov wrote: Hi Andrey, > Apparently this wasn't fixed, I've got this report again on > linux-next-c4e7b35a3 (Apr 11), which includes 8b3405e34 "kvm: > arm/arm64: Fix locking for kvm_free_stage2_pgd". This looks like a different bug. > > I now have a way to

Re: [PATCH V14 02/10] ras: acpi/apei: cper: generic error data entry v3 per ACPI 6.1

2017-04-12 Thread Joe Perches
On Wed, 2017-04-12 at 15:34 +0200, Borislav Petkov wrote: > On Tue, Mar 28, 2017 at 01:30:32PM -0600, Tyler Baicar wrote: > > Currently when a RAS error is reported it is not timestamped. [] > > diff --git a/include/acpi/ghes.h b/include/acpi/ghes.h [] > > +#define

Re: kvm/arm64: use-after-free in kvm_unmap_hva_handler/unmap_stage2_pmds

2017-04-12 Thread Andrey Konovalov
On Tue, Mar 14, 2017 at 5:57 PM, Paolo Bonzini wrote: > > > On 14/03/2017 12:07, Suzuki K Poulose wrote: >> On 10/03/17 13:34, Andrey Konovalov wrote: >>> Hi, >>> >>> I've got the following error report while fuzzing the kernel with >>> syzkaller. >>> >>> On linux-next commit

Re: [PATCH v3 8/8] arm64: exception: check shared writable page in SEI handler

2017-04-12 Thread Xiongfeng Wang
Hi James, On 2017/4/7 23:56, James Morse wrote: > Hi Xie XiuQi, > > On 30/03/17 11:31, Xie XiuQi wrote: >> From: Wang Xiongfeng >> >> Since SEI is asynchronous, the error data has been consumed. So we must >> suppose that all the memory data current process can write