Re: [PATCH v3 bpf] bpf: introduce BPF_JIT_ALWAYS_ON config

2018-01-29 Thread Greg KH
On Mon, Jan 29, 2018 at 12:40:47AM +0100, Daniel Borkmann wrote: > On 01/28/2018 03:45 PM, Greg KH wrote: > > On Wed, Jan 24, 2018 at 11:10:50AM +0100, Daniel Borkmann wrote: > >> On 01/24/2018 11:07 AM, David Woodhouse wrote: > >>> On Tue, 2018-01-09 at 22:39 +0100, Daniel Borkmann wrote: >

Re: [PATCH v3 bpf] bpf: introduce BPF_JIT_ALWAYS_ON config

2018-01-29 Thread Daniel Borkmann
On 01/29/2018 06:36 PM, Greg KH wrote: > On Mon, Jan 29, 2018 at 04:36:35PM +0100, Daniel Borkmann wrote: >> On 01/29/2018 12:40 AM, Daniel Borkmann wrote: >>> On 01/28/2018 03:45 PM, Greg KH wrote: On Wed, Jan 24, 2018 at 11:10:50AM +0100, Daniel Borkmann wrote: > On 01/24/2018 11:07 AM,

Re: [PATCH v3 bpf] bpf: introduce BPF_JIT_ALWAYS_ON config

2018-01-29 Thread Greg KH
On Mon, Jan 29, 2018 at 04:36:35PM +0100, Daniel Borkmann wrote: > On 01/29/2018 12:40 AM, Daniel Borkmann wrote: > > On 01/28/2018 03:45 PM, Greg KH wrote: > >> On Wed, Jan 24, 2018 at 11:10:50AM +0100, Daniel Borkmann wrote: > >>> On 01/24/2018 11:07 AM, David Woodhouse wrote: > On Tue,

Re: [PATCH v3 bpf] bpf: introduce BPF_JIT_ALWAYS_ON config

2018-01-29 Thread Daniel Borkmann
On 01/29/2018 12:40 AM, Daniel Borkmann wrote: > On 01/28/2018 03:45 PM, Greg KH wrote: >> On Wed, Jan 24, 2018 at 11:10:50AM +0100, Daniel Borkmann wrote: >>> On 01/24/2018 11:07 AM, David Woodhouse wrote: On Tue, 2018-01-09 at 22:39 +0100, Daniel Borkmann wrote: > On 01/09/2018 07:04

Re: [PATCH v3 bpf] bpf: introduce BPF_JIT_ALWAYS_ON config

2018-01-28 Thread Daniel Borkmann
On 01/28/2018 03:45 PM, Greg KH wrote: > On Wed, Jan 24, 2018 at 11:10:50AM +0100, Daniel Borkmann wrote: >> On 01/24/2018 11:07 AM, David Woodhouse wrote: >>> On Tue, 2018-01-09 at 22:39 +0100, Daniel Borkmann wrote: On 01/09/2018 07:04 PM, Alexei Starovoitov wrote: > > The BPF

Re: [PATCH v3 bpf] bpf: introduce BPF_JIT_ALWAYS_ON config

2018-01-28 Thread Greg KH
On Wed, Jan 24, 2018 at 11:10:50AM +0100, Daniel Borkmann wrote: > On 01/24/2018 11:07 AM, David Woodhouse wrote: > > On Tue, 2018-01-09 at 22:39 +0100, Daniel Borkmann wrote: > >> On 01/09/2018 07:04 PM, Alexei Starovoitov wrote: > >>> > >>> The BPF interpreter has been used as part of the

Re: [PATCH v3 bpf] bpf: introduce BPF_JIT_ALWAYS_ON config

2018-01-24 Thread Daniel Borkmann
On 01/24/2018 11:07 AM, David Woodhouse wrote: > On Tue, 2018-01-09 at 22:39 +0100, Daniel Borkmann wrote: >> On 01/09/2018 07:04 PM, Alexei Starovoitov wrote: >>> >>> The BPF interpreter has been used as part of the spectre 2 attack >>> CVE-2017-5715. >>> >>> A quote from goolge project zero

Re: [PATCH v3 bpf] bpf: introduce BPF_JIT_ALWAYS_ON config

2018-01-24 Thread David Woodhouse
On Tue, 2018-01-09 at 22:39 +0100, Daniel Borkmann wrote: > On 01/09/2018 07:04 PM, Alexei Starovoitov wrote: > > > > The BPF interpreter has been used as part of the spectre 2 attack > > CVE-2017-5715. > > > > A quote from goolge project zero blog: > > "At this point, it would normally be

Re: [PATCH v3 bpf] bpf: introduce BPF_JIT_ALWAYS_ON config

2018-01-09 Thread Daniel Borkmann
On 01/09/2018 07:04 PM, Alexei Starovoitov wrote: > The BPF interpreter has been used as part of the spectre 2 attack > CVE-2017-5715. > > A quote from goolge project zero blog: > "At this point, it would normally be necessary to locate gadgets in > the host kernel code that can be used to

[PATCH v3 bpf] bpf: introduce BPF_JIT_ALWAYS_ON config

2018-01-09 Thread Alexei Starovoitov
The BPF interpreter has been used as part of the spectre 2 attack CVE-2017-5715. A quote from goolge project zero blog: "At this point, it would normally be necessary to locate gadgets in the host kernel code that can be used to actually leak data by reading from an attacker-controlled location,