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Sat, 03 Oct 2026 11:02:29 -0700 (PDT) Date: Sat, 3 Oct 2026 23:02:24 +0500 From: Ameer Hamza To: "Lorenzo Stoakes (ARM)" Cc: rppt@kernel.org, peterz@infradead.org, akpm@linux-foundation.org, david@kernel.org, mingo@redhat.com, acme@kernel.org, namhyung@kernel.org, linux-mm@kvack.org, linux-perf-users@vger.kernel.org, linux-kernel@vger.kernel.org, regressions@lists.linux.dev, stable@vger.kernel.org, 4ncienth@gmail.com, sashal@kernel.org, alexander.motin@truenas.com, caleb.stjohn@truenas.com Subject: Re: [REGRESSION] secretmem: SIGBUS on memfd_secret() pages while perf record runs Message-ID: References: <20261002175651.811343-1-ameer.hamza@truenas.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: X-Rspamd-Server: rspam05 X-Rspamd-Queue-Id: DBEF04000F X-Stat-Signature: 4ypebry5khrnwc13m7kipdsajpx4k7zt X-Rspam-User: X-HE-Tag: 1791050551-587795 X-HE-Meta: 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 h1MgK+9/ km35xO2qC4yf97jzugPFijruL7xwQOfcXMSzhEjt8rgCgVSWB/8hnuUhigyyZUxg5LM0HFg+E+LZabjYo803LDuBFMAThbS36F9wFoqCtmuC/5h8Fh2w8t6cGQn2ikRlyAwZYjP+YVZVg7vDYFncdYklXBsAmOjwfWo1oI9ycfwScAlENvkZBU8+nHwtsEJlGGGuI1/5pxpsbs+8EcPvPbsF3AzKYLUZdSKjUzIOPY6kE7lBgm+VyIxrJl8XodftCDNydTccXQtTE9Dpf6L0kzgrkSfVpkXOptntTAxLAGI2LatZKGi1Vbnuv3qzfDJmW+Z6W0dIHnYM6iAzfvR2NjC9NTde18IwcFGrQ9udBa/HWKlMHtIa72Fdti1FPAQYYTU7WC/xS/8BvygpucubaX9dFrMMI43B/vcl+9uXcAJdZVxSWWqgi9L64nJYinQIEpa7O Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: List-Subscribe: List-Unsubscribe: On Sat, Oct 03, 2026 at 04:56:32PM +0100, Lorenzo Stoakes (ARM) wrote: > So this is a bug in perf, which should use its own counter for this, > AFAICT. Agreed, and the report's closing question pointed the same way, since the commit itself closes a real hole. Glad the longstanding perf bug is getting fixed as a result. Thanks for the analysis and for turning the fix around so quickly. Thanks, Ameer Hamza