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Registered in England and Wales under Company Registration No. 3798903 From: David Howells In-Reply-To: <2362635.1726655653@warthog.procyon.org.uk> References: <2362635.1726655653@warthog.procyon.org.uk> <202409131438.3f225fbf-oliver.sang@intel.com> <1263138.1726214359@warthog.procyon.org.uk> <20240913-felsen-nervig-7ea082a2702c@brauner> To: Oliver Sang Cc: dhowells@redhat.com, Christian Brauner , Steve French , oe-lkp@lists.linux.dev, lkp@intel.com, Linux Memory Management List , "Jeff Layton" , netfs@lists.linux.dev, linux-fsdevel@vger.kernel.org Subject: Re: [linux-next:master] [netfs] a05b682d49: BUG:KASAN:slab-use-after-free_in_copy_from_iter MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-ID: <2364478.1726658868.1@warthog.procyon.org.uk> Content-Transfer-Encoding: quoted-printable Date: Wed, 18 Sep 2024 12:27:48 +0100 Message-ID: <2364479.1726658868@warthog.procyon.org.uk> X-Scanned-By: MIMEDefang 3.0 on 10.30.177.12 X-Rspamd-Queue-Id: 8141040006 X-Rspam-User: X-Rspamd-Server: rspam05 X-Stat-Signature: 871zmxa7oykz178emy8pme398j7eawjr X-HE-Tag: 1726658882-24455 X-HE-Meta: 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 0oJxCjni 7qGyWP6R13P1vZ7NTMGWkOygvdUSKv8sKClD0orfriX/DjBl1EyEIESnyALKchPNqrDLTcJ/UvDX/sq397dXzCjXmT+ic5TdT2EqCOl+D7/hg/CFDA+mis54gkHZta0hx7BEE3NGFd6lDHXIu1Q4NGiybqdxS8I6FYODvPOpbo0dI1r3hPpuMLY7r3fw1gtL8IF9Z6t91be9axGLqSvk8DqLOIZ8RvNHRisjBUvJ3wD48XC0CXgnBvWAHBVQHgp+ff6daQ7Jhbxr3xn79r6f+d7G8nrMjQsIuGVS+8eMlTrsGnDb+73Mrx9ire8KY6qhh6uEbhu0Ff51lv3WkMMHigyDZMFy36mY7E+3uw0JMN363eFoPUiXd4xU9SSpNgXparSzYTgh3OUQnW5GAybzEJgwnSQOIZb9//CJX8jatVNszJ1B07U2imMqBhuef01QAFj57SuT5sLYYni0JT+zoksT3Yg== 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: David Howells wrote: > Does this: > = > https://lore.kernel.org/linux-fsdevel/2280667.1726594254@warthog.procyon= .org.uk/T/#u > = > [PATCH] cifs: Fix reversion of the iter in cifs_readv_receive() > = > help? Actually, it probably won't. The issue seems to be one I'm already trying= to reproduce that Steve has flagged. Can you tell me SMB server you're using? Samba, ksmbd, Windows, Azure? I= 'm guessing one of the first two. Also, will your reproducer really clobber four arbitrary partitions on sdb= ? David