From: Sasha Levin <sashal@kernel.org>
To: gregkh@linuxfoundation.org, stable@vger.kernel.org
Cc: Sasha Levin <sashal@kernel.org>,
rostedt@goodmis.org, mhiramat@kernel.org,
mathieu.desnoyers@efficios.com,
linux-trace-kernel@vger.kernel.org, linux-kernel@vger.kernel.org,
bpf@vger.kernel.org, Peter Jung <admin@ptr1337.dev>
Subject: Re: [PATCH 7.1.y] Revert "tracing: perf: Fix stale head for perf syscall tracing"
Date: Mon, 17 Aug 2026 11:24:40 -0400 [thread overview]
Message-ID: <20260817150000.2@kernel.org> (raw)
In-Reply-To: <20260816133101.83109-1-admin@ptr1337.dev>
> The 7.1.y implementation has not undergone that restructuring. It handles
> BPF and perf consumers together, and already reloads the current CPU's
> perf event list after syscall_get_data().
The analysis checks out on 7.1.y: 57918341dd19 ("bpf: Add sleepable
support for classic tracepoint programs") is not there, so the added
hlist_empty() early return runs before bpf_prog_array_valid() is ever
consulted and a BPF-only consumer stops firing.
Since this reverts a commit that already shipped in 7.1.6, I would like
your test result before queueing it - you mentioned you would have one
today. Ping the thread once you do and I will pick it up.
--
Thanks,
Sasha
prev parent reply other threads:[~2026-08-17 15:24 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-08-16 13:31 [PATCH 7.1.y] Revert "tracing: perf: Fix stale head for perf syscall tracing" Peter Jung
2026-08-16 14:57 ` Steven Rostedt
2026-08-16 19:43 ` Peter Jung
2026-08-17 15:24 ` Sasha Levin [this message]
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