Re: [PATCH 1/1] Fix: arm: kprobes: optimized kprobes illegal instruction

2019-02-05 Thread Masami Hiramatsu
On Tue, 5 Feb 2019 10:37:40 -0500 Mathieu Desnoyers wrote: > commit e46daee53bb5 ("ARM: 8806/1: kprobes: Fix false positive with > FORTIFY_SOURCE") introduced a regression in optimized kprobes. It > triggers "invalid instruction" oopses when using kprobes instrumentation > through lttng and perf

[PATCH 1/1] Fix: arm: kprobes: optimized kprobes illegal instruction

2019-02-05 Thread Mathieu Desnoyers
commit e46daee53bb5 ("ARM: 8806/1: kprobes: Fix false positive with FORTIFY_SOURCE") introduced a regression in optimized kprobes. It triggers "invalid instruction" oopses when using kprobes instrumentation through lttng and perf. This commit was introduced in kernel v4.20, and has been backported

[PATCH 1/1] Fix: arm: kprobes: optimized kprobes illegal instruction

2019-02-05 Thread Mathieu Desnoyers
commit e46daee53bb5 ("ARM: 8806/1: kprobes: Fix false positive with FORTIFY_SOURCE") introduced a regression in optimized kprobes. It triggers "invalid instruction" oopses when using kprobes instrumentation through lttng and perf. This commit was introduced in kernel v4.20, and has been backported

Re: [PATCH 1/1] Fix: arm: kprobes: optimized kprobes illegal instruction

2019-02-05 Thread Mathieu Desnoyers
- On Feb 5, 2019, at 10:04 AM, Kees Cook keesc...@chromium.org wrote: > On Mon, Feb 4, 2019 at 9:52 PM Mathieu Desnoyers > wrote: >> >> commit e46daee53bb5 "ARM: 8806/1: kprobes: Fix false positive with >> FORTIFY_SOURCE" >> introduced a regression in optimized kprobes. It triggers "invalid >

Re: [PATCH 1/1] Fix: arm: kprobes: optimized kprobes illegal instruction

2019-02-05 Thread Kees Cook
On Mon, Feb 4, 2019 at 9:52 PM Mathieu Desnoyers wrote: > > commit e46daee53bb5 "ARM: 8806/1: kprobes: Fix false positive with > FORTIFY_SOURCE" > introduced a regression in optimized kprobes. It triggers "invalid > instruction" oopses when using kprobes instrumentation through lttng and > perf.

[PATCH 1/1] Fix: arm: kprobes: optimized kprobes illegal instruction

2019-02-04 Thread Mathieu Desnoyers
commit e46daee53bb5 "ARM: 8806/1: kprobes: Fix false positive with FORTIFY_SOURCE" introduced a regression in optimized kprobes. It triggers "invalid instruction" oopses when using kprobes instrumentation through lttng and perf. This commit was introduced in kernel v4.20, and has been backported t