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From: Muchun Song In-Reply-To: Date: Wed, 15 Jan 2025 17:09:46 +0800 Cc: cheung wall , Andrew Morton , linux-mm@kvack.org, linux-kernel@vger.kernel.org Content-Transfer-Encoding: quoted-printable Message-Id: <024E619D-033C-4482-89D2-B997950A9463@linux.dev> References: To: Yu Zhao X-Migadu-Flow: FLOW_OUT X-Stat-Signature: 68ux14rrkmaigsojtio36qdarhijztda X-Rspam-User: X-Rspamd-Queue-Id: 395F1C001A X-Rspamd-Server: rspam08 X-HE-Tag: 1736932232-254887 X-HE-Meta: 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 9GRbknMw swXKI8jkq3oCv1d0TtZN8LkZpAk1RiSreUw+KFBqBBXEbnWjlu5NvyCiMKZKFP+AQOGyqtRWwn8fZpke3UmPKLtpHCRWNFzrw8JD4U/cptE1hFvBO32mkdXeV7yXiEsaZbOsN4eIWFkAB3V+qG6Y0ZbS59DrlkZcUTxeZuaPr291YDx10q0/uZ/4InRoRXjMJ9RbMTWGWw4TwBTShPRzMkh3BemT+QWxakIw20crEbRKsyMchK6+JASCem1mXzf2mCMPlpeJ+gBjul4ccZ9WZlK+jXY4/H0ZSJcsElAMLt1kQ7uiaTdKWpSj7F7gJfJssPYHtC2I5X8skH01I3gNDUfglsqr1Cm+AaPTIuF6Edv6TCRLTFWWegSW6Jk/ezejXHfrp8X4YrE3y+0jXc+1pqfjhXg== 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 Jan 15, 2025, at 12:42, Yu Zhao wrote: >=20 > On Tue, Jan 14, 2025 at 8:45=E2=80=AFPM Muchun Song = wrote: >>=20 >>=20 >>=20 >>> On Jan 15, 2025, at 10:17, cheung wall = wrote: >>>=20 >>> Hello, >>>=20 >>> I am writing to report a potential vulnerability identified in the >>> Linux Kernel version v6.12-rc4. This vulnerability was discovered >>> while i was testing the kernel. >>=20 >> Thanks for your report. I'll fix it later. >>=20 >> Thanks, >> Muchun >>=20 >>>=20 >>> Linux Kernel Repository Git Commit: >>> 42f7652d3eb527d03665b09edac47f85fb600924 (tag: v6.12-rc4) >>>=20 >>> Bug Location: update_and_free_pages_bulk+0x657/0x810 = mm/hugetlb.c:1860 >>>=20 >>> Bug report: https://pastebin.com/q8J3z5Gq >>>=20 >>> Entire Log: https://pastebin.com/AQF101kq >>>=20 >>> Thank you for your time and attention. >>>=20 >>> Best regards >>>=20 >>> Wall >=20 > This was fixed by > commit 9d08ec41a064 ("mm: allow set/clear page_type again") Thanks for your reminder. It's really helpful. Thanks, Muchun > and it went into v6.12-rc6.