From: Andrey Grodzovsky <andrey.grodzovsky@crowdstrike.com>
To: Josh Poimboeuf <jpoimboe@kernel.org>, <x86@kernel.org>
Cc: <linux-kernel@vger.kernel.org>, <live-patching@vger.kernel.org>,
<bpf@vger.kernel.org>, Petr Mladek <pmladek@suse.com>,
Song Liu <song@kernel.org>, Raja Khan <raja.khan@crowdstrike.com>,
Miroslav Benes <mbenes@suse.cz>,
Alexei Starovoitov <ast@kernel.org>,
Daniel Borkmann <daniel@iogearbox.net>,
Andrii Nakryiko <andrii@kernel.org>,
Peter Zijlstra <peterz@infradead.org>,
DL Linux Open Source Team <linux-open-source@crowdstrike.com>
Subject: Re: [External] [PATCH 0/2] bpf, x86/unwind/orc: Support reliable unwinding through BPF stack frames
Date: Tue, 2 Dec 2025 15:56:26 -0500 [thread overview]
Message-ID: <fe0e9330-8ad7-4835-9ba9-adbcbe40e6a3@crowdstrike.com> (raw)
In-Reply-To: <cover.1764699074.git.jpoimboe@kernel.org>
On 12/2/25 13:19, Josh Poimboeuf wrote:
> Fix livepatch stalls which may be seen when a task is blocked with BPF
> JIT on its kernel stack.
>
> Josh Poimboeuf (2):
> bpf: Add bpf_has_frame_pointer()
> x86/unwind/orc: Support reliable unwinding through BPF stack frames
>
> arch/x86/kernel/unwind_orc.c | 39 +++++++++++++++++++++++++-----------
> arch/x86/net/bpf_jit_comp.c | 10 +++++++++
> include/linux/bpf.h | 3 +++
> kernel/bpf/core.c | 16 +++++++++++++++
> 4 files changed, 56 insertions(+), 12 deletions(-)
>
Acked-and-tested-by: Andrey Grodzovsky<andrey.grodzovsky@crowdstrike.com>
Question - This looks to be x86 specific issue since ORC unwinding is
x86 specific and as such this has no impact on ARM, correct ?
Andrey
next prev parent reply other threads:[~2025-12-02 21:18 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2025-12-02 18:19 [PATCH 0/2] bpf, x86/unwind/orc: Support reliable unwinding through BPF stack frames Josh Poimboeuf
2025-12-02 18:19 ` [PATCH 1/2] bpf: Add bpf_has_frame_pointer() Josh Poimboeuf
2025-12-02 18:53 ` Song Liu
2025-12-02 23:10 ` Josh Poimboeuf
2025-12-02 18:19 ` [PATCH 2/2] x86/unwind/orc: Support reliable unwinding through BPF stack frames Josh Poimboeuf
2025-12-02 18:59 ` Song Liu
2025-12-02 20:56 ` Andrey Grodzovsky [this message]
2025-12-02 22:07 ` [External] [PATCH 0/2] bpf, " Josh Poimboeuf
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