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b=I/BeLCnztAV4lyCfHU+qrIsiq6T1r0DEVYvjy0GGYoSoN+zyafwPo08MlUjwMd6x0v6ab/ igvUdwK0jZHiurDA== Precedence: bulk X-Mailing-List: linux-trace-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 7bit Subject: Re: [RFC PATCH bpf-next v3 2/2] selftests/livepatch: update test-ftrace.sh for deprecated ftrace_enabled From: Miroslav Benes To: Andrey Grodzovsky Cc: bpf@vger.kernel.org, linux-trace-kernel@vger.kernel.org, live-patching@vger.kernel.org, rostedt@goodmis.org, mbenes@suse.cz, jolsa@kernel.org, mhiramat@kernel.org, jpoimboe@kernel.org, joe.lawrence@redhat.com, mark.rutland@arm.com, corbet@lwn.net, stable@vger.kernel.org, linux-open-source@crowdstrike.com In-Reply-To: <20260806153000.4184871-3-andrey.grodzovsky@crowdstrike.com> References: <20260806153000.4184871-1-andrey.grodzovsky@crowdstrike.com> <20260806153000.4184871-3-andrey.grodzovsky@crowdstrike.com> Date: Mon, 24 Aug 2026 14:41:48 +0200 Message-Id: <178757530845.29054.17849856818444710672.b4-review@b4> X-Mailer: b4 0.17-dev X-Developer-Signature: v=1; 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ONCE_RECEIVED(1.20)[]; MID_RHS_NOT_FQDN(0.50)[]; R_DKIM_ALLOW(-0.20)[suse.cz:s=susede2_rsa,suse.cz:s=susede2_ed25519]; MIME_GOOD(-0.10)[text/plain]; MX_GOOD(-0.01)[]; ARC_NA(0.00)[]; FROM_HAS_DN(0.00)[]; RCVD_COUNT_ZERO(0.00)[0]; MIME_TRACE(0.00)[0:+]; RBL_SPAMHAUS_BLOCKED_OPENRESOLVER(0.00)[2a07:de40:b2bf:1b::12ef:from]; RCPT_COUNT_TWELVE(0.00)[14]; FROM_EQ_ENVFROM(0.00)[]; DIRECT_TO_MX(0.00)[b4 0.17-dev]; DNSWL_BLOCKED(0.00)[2a07:de40:b2bf:1b::12ef:from]; TO_MATCH_ENVRCPT_ALL(0.00)[]; DKIM_TRACE(0.00)[suse.cz:+]; TO_DN_SOME(0.00)[]; DKIM_SIGNED(0.00)[suse.cz:s=susede2_rsa,suse.cz:s=susede2_ed25519]; DBL_BLOCKED_OPENRESOLVER(0.00)[suse.cz:email,suse.cz:dkim,localhost.localdomain:helo,crowdstrike.com:email] X-Spam-Score: 17.41 X-Spam-Level: ***************** X-Spamd-Bar: +++++++++++++++++ X-Rspamd-Queue-Id: 026281F766 X-Rspamd-Server: rspamd1.dmz-prg2.suse.org X-Spam-Flag: YES X-Rspamd-Action: add header X-Spam: Yes On Thu, 06 Aug 2026 11:30:00 -0400, Andrey Grodzovsky wrote: > kernel.ftrace_enabled=0 is now refused on kernels that deprecate the > knob, so the old disable/reload flow no longer applies there. Probe > for this with ftrace_disable_supported() and keep the full original > scenario (disable, fail to load a livepatch, re-enable, load, confirm > disable is refused while loaded) on kernels where it still works; > otherwise just confirm the write is refused. > > [...] Acked-by: Miroslav Benes -- Miroslav