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Tue, 27 Jan 2026 22:27:05 -0800 (PST) From: Qing Wang To: andrii.nakryiko@gmail.com Cc: acme@kernel.org, adrian.hunter@intel.com, alexander.shishkin@linux.intel.com, bpf@vger.kernel.org, irogers@google.com, jolsa@kernel.org, linux-kernel@vger.kernel.org, linux-perf-users@vger.kernel.org, mark.rutland@arm.com, mingo@redhat.com, namhyung@kernel.org, peterz@infradead.org, radoslaw.zielonek@gmail.com, syzbot+72a43cdb78469f7fbad1@syzkaller.appspotmail.com Subject: Re: [PATCH] perf callchain: Fix suspicious RCU usage in get_callchain_entry() Date: Wed, 28 Jan 2026 14:26:56 +0800 Message-Id: <20260128062656.1860201-1-wangqing7171@gmail.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: References: Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit On Fri, 19 Jul 2024 at 01:41, Andrii Nakryiko wrote: > Which is what I'm doing in [0]. Radoslaw, can you please help > validating if those changes are enough to fix this issue or we need to > do some more? > > [0] https://patchwork.kernel.org/project/netdevbpf/patch/20240709204245.3= > 847811-10-andrii@kernel.org/ > > > > > > --- > > > kernel/events/callchain.c | 11 +++++++++-- > > > 1 file changed, 9 insertions(+), 2 deletions(-) > > > Hi, I found this issue still exists after your patch in upstream and I have a patch to fix it. Patch here: https://lore.kernel.org/all/20260128061753.1857803-1-wangqing7171@gmail.com/T/ Looking forward to your review. -- Best regards, Qing