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Howlett" , Andrew Morton , Vlastimil Babka , Mike Rapoport , Michal Hocko , Matthew Wilcox Cc: iommu@lists.linux.dev, security@kernel.org, x86@kernel.org, linux-mm@kvack.org, linux-kernel@vger.kernel.org, Dave Hansen References: <20251014130437.1090448-1-baolu.lu@linux.intel.com> <20251014130437.1090448-4-baolu.lu@linux.intel.com> From: Dave Hansen Content-Language: en-US Autocrypt: addr=dave.hansen@intel.com; keydata= xsFNBE6HMP0BEADIMA3XYkQfF3dwHlj58Yjsc4E5y5G67cfbt8dvaUq2fx1lR0K9h1bOI6fC oAiUXvGAOxPDsB/P6UEOISPpLl5IuYsSwAeZGkdQ5g6m1xq7AlDJQZddhr/1DC/nMVa/2BoY 2UnKuZuSBu7lgOE193+7Uks3416N2hTkyKUSNkduyoZ9F5twiBhxPJwPtn/wnch6n5RsoXsb ygOEDxLEsSk/7eyFycjE+btUtAWZtx+HseyaGfqkZK0Z9bT1lsaHecmB203xShwCPT49Blxz VOab8668QpaEOdLGhtvrVYVK7x4skyT3nGWcgDCl5/Vp3TWA4K+IofwvXzX2ON/Mj7aQwf5W iC+3nWC7q0uxKwwsddJ0Nu+dpA/UORQWa1NiAftEoSpk5+nUUi0WE+5DRm0H+TXKBWMGNCFn c6+EKg5zQaa8KqymHcOrSXNPmzJuXvDQ8uj2J8XuzCZfK4uy1+YdIr0yyEMI7mdh4KX50LO1 pmowEqDh7dLShTOif/7UtQYrzYq9cPnjU2ZW4qd5Qz2joSGTG9eCXLz5PRe5SqHxv6ljk8mb ApNuY7bOXO/A7T2j5RwXIlcmssqIjBcxsRRoIbpCwWWGjkYjzYCjgsNFL6rt4OL11OUF37wL QcTl7fbCGv53KfKPdYD5hcbguLKi/aCccJK18ZwNjFhqr4MliQARAQABzUVEYXZpZCBDaHJp c3RvcGhlciBIYW5zZW4gKEludGVsIFdvcmsgQWRkcmVzcykgPGRhdmUuaGFuc2VuQGludGVs LmNvbT7CwXgEEwECACIFAlQ+9J0CGwMGCwkIBwMCBhUIAgkKCwQWAgMBAh4BAheAAAoJEGg1 lTBwyZKwLZUP/0dnbhDc229u2u6WtK1s1cSd9WsflGXGagkR6liJ4um3XCfYWDHvIdkHYC1t MNcVHFBwmQkawxsYvgO8kXT3SaFZe4ISfB4K4CL2qp4JO+nJdlFUbZI7cz/Td9z8nHjMcWYF IQuTsWOLs/LBMTs+ANumibtw6UkiGVD3dfHJAOPNApjVr+M0P/lVmTeP8w0uVcd2syiaU5jB aht9CYATn+ytFGWZnBEEQFnqcibIaOrmoBLu2b3fKJEd8Jp7NHDSIdrvrMjYynmc6sZKUqH2 I1qOevaa8jUg7wlLJAWGfIqnu85kkqrVOkbNbk4TPub7VOqA6qG5GCNEIv6ZY7HLYd/vAkVY E8Plzq/NwLAuOWxvGrOl7OPuwVeR4hBDfcrNb990MFPpjGgACzAZyjdmYoMu8j3/MAEW4P0z F5+EYJAOZ+z212y1pchNNauehORXgjrNKsZwxwKpPY9qb84E3O9KYpwfATsqOoQ6tTgr+1BR CCwP712H+E9U5HJ0iibN/CDZFVPL1bRerHziuwuQuvE0qWg0+0SChFe9oq0KAwEkVs6ZDMB2 P16MieEEQ6StQRlvy2YBv80L1TMl3T90Bo1UUn6ARXEpcbFE0/aORH/jEXcRteb+vuik5UGY 5TsyLYdPur3TXm7XDBdmmyQVJjnJKYK9AQxj95KlXLVO38lczsFNBFRjzmoBEACyAxbvUEhd GDGNg0JhDdezyTdN8C9BFsdxyTLnSH31NRiyp1QtuxvcqGZjb2trDVuCbIzRrgMZLVgo3upr MIOx1CXEgmn23Zhh0EpdVHM8IKx9Z7V0r+rrpRWFE8/wQZngKYVi49PGoZj50ZEifEJ5qn/H Nsp2+Y+bTUjDdgWMATg9DiFMyv8fvoqgNsNyrrZTnSgoLzdxr89FGHZCoSoAK8gfgFHuO54B lI8QOfPDG9WDPJ66HCodjTlBEr/Cwq6GruxS5i2Y33YVqxvFvDa1tUtl+iJ2SWKS9kCai2DR 3BwVONJEYSDQaven/EHMlY1q8Vln3lGPsS11vSUK3QcNJjmrgYxH5KsVsf6PNRj9mp8Z1kIG qjRx08+nnyStWC0gZH6NrYyS9rpqH3j+hA2WcI7De51L4Rv9pFwzp161mvtc6eC/GxaiUGuH BNAVP0PY0fqvIC68p3rLIAW3f97uv4ce2RSQ7LbsPsimOeCo/5vgS6YQsj83E+AipPr09Caj 0hloj+hFoqiticNpmsxdWKoOsV0PftcQvBCCYuhKbZV9s5hjt9qn8CE86A5g5KqDf83Fxqm/ vXKgHNFHE5zgXGZnrmaf6resQzbvJHO0Fb0CcIohzrpPaL3YepcLDoCCgElGMGQjdCcSQ+Ci FCRl0Bvyj1YZUql+ZkptgGjikQARAQABwsFfBBgBAgAJBQJUY85qAhsMAAoJEGg1lTBwyZKw l4IQAIKHs/9po4spZDFyfDjunimEhVHqlUt7ggR1Hsl/tkvTSze8pI1P6dGp2XW6AnH1iayn yRcoyT0ZJ+Zmm4xAH1zqKjWplzqdb/dO28qk0bPso8+1oPO8oDhLm1+tY+cOvufXkBTm+whm +AyNTjaCRt6aSMnA/QHVGSJ8grrTJCoACVNhnXg/R0g90g8iV8Q+IBZyDkG0tBThaDdw1B2l asInUTeb9EiVfL/Zjdg5VWiF9LL7iS+9hTeVdR09vThQ/DhVbCNxVk+DtyBHsjOKifrVsYep WpRGBIAu3bK8eXtyvrw1igWTNs2wazJ71+0z2jMzbclKAyRHKU9JdN6Hkkgr2nPb561yjcB8 sIq1pFXKyO+nKy6SZYxOvHxCcjk2fkw6UmPU6/j/nQlj2lfOAgNVKuDLothIxzi8pndB8Jju KktE5HJqUUMXePkAYIxEQ0mMc8Po7tuXdejgPMwgP7x65xtfEqI0RuzbUioFltsp1jUaRwQZ MTsCeQDdjpgHsj+P2ZDeEKCbma4m6Ez/YWs4+zDm1X8uZDkZcfQlD9NldbKDJEXLIjYWo1PH hYepSffIWPyvBMBTW2W5FRjJ4vLRrJSUoEfJuPQ3vW9Y73foyo/qFoURHO48AinGPZ7PC7TF vUaNOTjKedrqHkaOcqB185ahG2had0xnFsDPlx5y In-Reply-To: <20251014130437.1090448-4-baolu.lu@linux.intel.com> Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit X-Rspamd-Server: rspam12 X-Rspamd-Queue-Id: 0C6F5160008 X-Stat-Signature: zgfehdyohm1uswki3u6465gckhy4zi1m X-Rspam-User: X-HE-Tag: 1760484018-909704 X-HE-Meta: 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 9wNHrcpY 2x+UK9HH1vS7qbr3GsRogCk3hHl0oNzZPHCbkzH6R6LDpuzhHNAKFKUCW+Yt6IP6mtEU9BVDJxlpiCh1zkjJ6x062EOtwpxSGXfY1dVr6s+3kuhqpsnPiqihPx+iEtgXj9UmeTIEoTdCgr4/bWvbOFvI5fnNFA9/whbVlQrGxi5FL88Gq3p5XGcb3qYzOJqiCdDolv02m3CN/pl7fr7RnZkwLOA== X-Bogosity: Ham, tests=bogofilter, spamicity=0.000000, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: List-Subscribe: List-Unsubscribe: On 10/14/25 06:04, Lu Baolu wrote: > -#if defined(CONFIG_SPLIT_PMD_PTLOCKS) > - > +#if defined(CONFIG_SPLIT_PMD_PTLOCKS) || defined(CONFIG_X86_64) What's with the #ifdef munging? It's not mentioned in the changelog. I went looking at this because pmd_free_pte_page() is right in the middle of the action on this reported use after free: > https://lore.kernel.org/all/68eeb99e.050a0220.91a22.0220.GAE@google.com/ so something fishy is going on. It would be great to narrow that report down to a _specific_ patch in the series.