linux-kernel - [PATCH v4 0/2] x86: bpf unwinder fixes

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Date:   Thu, 27 Jun 2019 20:50:45 -0500
From:   Josh Poimboeuf <jpoimboe@...hat.com>
To:     x86@...nel.org
Cc:     linux-kernel@...r.kernel.org,
        Peter Zijlstra <peterz@...radead.org>,
        Song Liu <songliubraving@...com>,
        Kairui Song <kasong@...hat.com>,
        Steven Rostedt <rostedt@...dmis.org>,
        Thomas Gleixner <tglx@...utronix.de>,
        Borislav Petkov <bp@...en8.de>, Ingo Molnar <mingo@...nel.org>,
        Alexei Starovoitov <ast@...nel.org>,
        Daniel Borkmann <daniel@...earbox.net>
Subject: [PATCH v4 0/2] x86: bpf unwinder fixes

Here's the last fix along with its objtool dependency.

For testing I verified that a WARN() in ___bpf_prog_run() now gives a
clean stack trace.

v4: 
- Redesigned the jump table detection mechanism.  Instead of requiring
  the jump table to have a magic name, place it in a special section.

- The other two fixes from v3 have been merged into -tip.

Josh Poimboeuf (2):
  objtool: Add support for C jump tables
  bpf: Fix ORC unwinding in non-JIT BPF code

 include/linux/compiler.h |  5 +++++
 kernel/bpf/core.c        |  3 +--
 tools/objtool/check.c    | 27 ++++++++++++++++++++-------
 3 files changed, 26 insertions(+), 9 deletions(-)

-- 
2.20.1