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b=aMzYH3zAs+3wbAFnWqVBM8apCrSSsiS01IPD2V5K8Xaqpc8N8eLR6N8BpPAU+vWbG Jbd1yXeOVf0RBf4q2k/l4ax9ZZwknfhDboCj1MZyC+8Dhon9aVRH4T6Pg1k534ycXs BDTxGVtJkuO+qlxgA6NcWvVXEW7LWWwNt66lFdPLuSdQ8MhSUr+Gr+URw9zRON3c5P 9LXljskJkDHa7kwbxaJROwDk2IYdhFq5L+VRu9ybYNrLM8PINQHkbgfbGvbyYPhG5J m2su8QQ6OG66nUrJRBDrmhCJOjQrbgPQ3qaBQSukd0P9QSJL0sazp/CLRlAyWN2Eil shuKbiMUH8jJQ== Date: Fri, 10 Jul 2026 18:04:53 +0100 From: Lorenzo Stoakes To: Hao Zhang Cc: Kiryl Shutsemau , Andrew Morton , David Hildenbrand , linux-mm@kvack.org Subject: Re: [PATCH] mm: thp: unlock i_mmap before releasing split folios Message-ID: References: <20260710071344.GA106129@zh-pc> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: X-Rspamd-Queue-Id: 3417720007 X-Rspam-User: X-Stat-Signature: od4zn9eot8n7uttmpp16q3cmbm77bzb8 X-Rspamd-Server: rspam03 X-HE-Tag: 1783703105-85806 X-HE-Meta: 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 EMeSoSvZ 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 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: List-Subscribe: List-Unsubscribe: I hate to have to keep pointing this out to people and maybe you were trying to limit the mailing list rather to maintainers only buuuut :) $ scripts/get_maintainer.pl mm/huge_memory.c Andrew Morton (maintainer:MEMORY MANAGEMENT - THP (TRANSPARENT HUGE PAGE)) David Hildenbrand (maintainer:MEMORY MANAGEMENT - THP (TRANSPARENT HUGE PAGE)) Lorenzo Stoakes (maintainer:MEMORY MANAGEMENT - THP (TRANSPARENT HUGE PAGE)) Zi Yan (reviewer:MEMORY MANAGEMENT - THP (TRANSPARENT HUGE PAGE)) Baolin Wang (reviewer:MEMORY MANAGEMENT - THP (TRANSPARENT HUGE PAGE)) "Liam R. Howlett" (reviewer:MEMORY MANAGEMENT - THP (TRANSPARENT HUGE PAGE)) Nico Pache (reviewer:MEMORY MANAGEMENT - THP (TRANSPARENT HUGE PAGE)) Ryan Roberts (reviewer:MEMORY MANAGEMENT - THP (TRANSPARENT HUGE PAGE)) Dev Jain (reviewer:MEMORY MANAGEMENT - THP (TRANSPARENT HUGE PAGE)) Barry Song (reviewer:MEMORY MANAGEMENT - THP (TRANSPARENT HUGE PAGE)) Lance Yang (reviewer:MEMORY MANAGEMENT - THP (TRANSPARENT HUGE PAGE)) Usama Arif (reviewer:MEMORY MANAGEMENT - THP (TRANSPARENT HUGE PAGE)) linux-mm@kvack.org (open list:MEMORY MANAGEMENT - THP (TRANSPARENT HUGE PAGE)) linux-kernel@vger.kernel.org (open list) It definitely helps to cc everybody relevant when it comes to getting review. On Fri, Jul 10, 2026 at 11:56:00PM +0800, Hao Zhang wrote: > Memory failure: 0x5a6a7: recovery action for clean LRU page: Recovered > Injecting memory failure for pfn 0x81bfe at process virtual address 0x200000ffe000 > ================================================================== > BUG: KASAN: slab-use-after-free in __up_read+0x634/0x790 data/linux/kernel/locking/rwsem.c:1353 > Read of size 8 at addr ffff88800b81c5e8 by task syz.2.11034/45874 > > ... > > <<<<<<<<<<<<<<< tail report >>>>>>>>>>>>>>> > > This is the crash report, please review. > Thanks but do you have any of the other pieces around this to help? Like a reproducer, .config, the arch you ran it on, etc. etc.? In general please do ensure you evidence things like this without needing to be asked for it, we can't just take your word for it and the more you do to make our lives easier the quicker we can get the review done. We've had real issues in the past with private syzbot reports where it's turned out on more than one occasion to not actually be a genuine issue. So your help at a time where mm review is _totally_ overwhelmed would be much appreciated :) Thanks, Lorenzo