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Howlett" , Vlastimil Babka , Shakeel Butt , David Hildenbrand , Mike Rapoport , Michal Hocko , Uladzislau Rezki , Toshi Kani , Dave Hansen , Andy Lutomirski , Peter Zijlstra , Thomas Gleixner , Ingo Molnar , Borislav Petkov , x86@kernel.org, "H. Peter Anvin" , Kiryl Shutsemau , Catalin Marinas , Will Deacon , Dev Jain , Ryan Roberts , David Carlier , linux-mm@kvack.org, linux-kernel@vger.kernel.org, bpf@vger.kernel.org, linux-arm-kernel@lists.infradead.org, "Denis V. Lunev" , stable@vger.kernel.org, "intel-gfx@lists.freedesktop.org" , "intel-xe@lists.freedesktop.org" Subject: Re: [REGRESSION]: [PATCH mm-hotfixes v5 3/5] x86/mm/pat: acquire init_mm read lock on attribute change to avoid UAF Message-ID: References: <20260717-series-vmap-race-fix-v5-0-606a0ac6d3e5@kernel.org> <20260717-series-vmap-race-fix-v5-3-606a0ac6d3e5@kernel.org> <80993b70-352f-4069-84c7-39a04c061e98@intel.com> <15f365d9-b5b9-4dc1-b24c-1b6f9363e9b1@intel.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <15f365d9-b5b9-4dc1-b24c-1b6f9363e9b1@intel.com> X-Stat-Signature: posbjeuq8jj1wbwr4nagync1wgo19dsw X-Rspam-User: X-Rspamd-Server: rspam11 X-Rspamd-Queue-Id: 4F7C918000C X-HE-Tag: 1785151537-236502 X-HE-Meta: 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 /j2f6rcP 61hrHtyELQqnxe3U8uu7pNHS1RJdFpW3zWGtUW0yUWyCRcdHxMUYoR0qP0gok137Pq1dYGlP+1n99h1nFI6iCwG5g857yKvZAfuSV2tJfihqLStx2f+0fE5bpsm9VmnLl2CKxYMpD22K/gmcSytw0vlQTRXeuaq+2LJgePwf8k4rPCAMmZ93bE4MdEUWkhFPvN6iA5690QojXRnqEUWMy3BKC+EtTrEqZA2Hk4eiSAoqnoSRzwPNRiTFwB2hFGGJIgcAoGNNPv3PQLbEZgjOOQUMmxKoGkNYzUsfOmktWUCDcJbqL0bpjWTZL6+uAi8Gr72jnlxzEIOeutXaBoYNwalSlVr+XCoQC6TYY4iTazrg9C7Jcj2Wnr77Qtov5dX/jncSPjXjaGqKeJNGHjXTl4LGzV15/9pmg9msOvwWRZw9VIx8= Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: List-Subscribe: List-Unsubscribe: On Mon, Jul 27, 2026 at 02:30:57PM +0530, Borah, Chaitanya Kumar wrote: > > > On 7/23/2026 7:48 PM, Lorenzo Stoakes (ARM) wrote: > > Thanks for the report! > > > > A small note - it'd be useful for you to clearly point > > out the revision of next to make our life a bit easier :) > > > > Ack. > Thanks! :) > > (another small note - running scripts/decode_stacktrace.sh would be hugely > > useful as these offsets aren't so useful unless I have the exact kernel > > binary you have with debug symbols :) > > > > We have not been asked for that yet but we can surely provide it if it > becomes absolutely necessary for debugging. > It would be SUPER useful if it's not too difficult to implement, thanks :) > Thank you for sending the fixes. > > CI looks good now. > > https://intel-gfx-ci.01.org/tree/linux-next/combined-alt.html? Great thanks! Cheers, Lorenzo