linux-kernel - [tip: perf/core] perf/bpf: Create bpf_overflow_handler() stub for !CONFIG_BPF

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Date: Fri, 12 Apr 2024 10:03:26 -0000
From: "tip-bot2 for Kyle Huey" <tip-bot2@...utronix.de>
To: linux-tip-commits@...r.kernel.org
Cc: Kyle Huey <khuey@...ehuey.com>, Ingo Molnar <mingo@...nel.org>,
 x86@...nel.org, linux-kernel@...r.kernel.org
Subject: [tip: perf/core] perf/bpf: Create bpf_overflow_handler() stub for
 !CONFIG_BPF_SYSCALL

The following commit has been merged into the perf/core branch of tip:

Commit-ID:     924d934393f98fa6a41d6ea27352faf79c2bbaf6
Gitweb:        https://git.kernel.org/tip/924d934393f98fa6a41d6ea27352faf79c2bbaf6
Author:        Kyle Huey <me@...ehuey.com>
AuthorDate:    Thu, 11 Apr 2024 18:50:14 -07:00
Committer:     Ingo Molnar <mingo@...nel.org>
CommitterDate: Fri, 12 Apr 2024 11:49:48 +02:00

perf/bpf: Create bpf_overflow_handler() stub for !CONFIG_BPF_SYSCALL

This will allow __perf_event_overflow() (which is independent of
CONFIG_BPF_SYSCALL) to call bpf_overflow_handler().

Signed-off-by: Kyle Huey <khuey@...ehuey.com>
Signed-off-by: Ingo Molnar <mingo@...nel.org>
Link: https://lore.kernel.org/r/20240412015019.7060-3-khuey@kylehuey.com
---
 kernel/events/core.c | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/kernel/events/core.c b/kernel/events/core.c
index ca0a906..d3f3f55 100644
--- a/kernel/events/core.c
+++ b/kernel/events/core.c
@@ -9643,6 +9643,12 @@ static void perf_event_free_bpf_handler(struct perf_event *event)
 	bpf_prog_put(prog);
 }
 #else
+static void bpf_overflow_handler(struct perf_event *event,
+				 struct perf_sample_data *data,
+				 struct pt_regs *regs)
+{
+}
+
 static int perf_event_set_bpf_handler(struct perf_event *event,
 				      struct bpf_prog *prog,
 				      u64 bpf_cookie)