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Wed, 28 Aug 2024 22:20:15 -0700 (PDT) X-Google-Smtp-Source: AGHT+IHtw1BOlLUaOKprgVjlL/LtyLeM1+0tuUpnn+kK49YRBERx/P+NDQeXjxtE+TO094UecuMe95yJy/8UvktdhKw= X-Received: by 2002:a05:6e02:184c:b0:39b:389d:f7ce with SMTP id e9e14a558f8ab-39f378ec19fmr20752935ab.2.1724908815041; Wed, 28 Aug 2024 22:20:15 -0700 (PDT) MIME-Version: 1.0 References: In-Reply-To: From: Xingyu Li Date: Wed, 28 Aug 2024 22:20:04 -0700 Message-ID: Subject: Re: BUG: general protection fault in get_mem_cgroup_from_objcg To: Roman Gushchin Cc: hannes@cmpxchg.org, mhocko@kernel.org, shakeel.butt@linux.dev, muchun.song@linux.dev, cgroups@vger.kernel.org, linux-mm@kvack.org, linux-kernel@vger.kernel.org, Yu Hao , Juefei Pu Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable X-Rspam-User: X-Rspamd-Server: rspam04 X-Rspamd-Queue-Id: 569B918001E X-Stat-Signature: abps4dywsggtnehhonm9yp96duzpaikc X-HE-Tag: 1724908817-608275 X-HE-Meta: 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 i7K97Mrp mkXYvLukO7ajpo/ARf24ke3ZxtJCCkaHWnDAOqIJgqY65m++7dTrji79Po6j1B1hMEtmDKUJorAN5+e+lTSd1/DTiL8p72iEwtrlLkTSreSWlyQgwOi/J6+XEq5Sj65jR7+EZDdapqeUEgyq6EgmdP3lgbMcS8HaadVJJpdbtHf3BH/WsD3MooEg1GyNz54ZrsdA63FYBMjHJaO9e7J/6hbq+1UZ7tTPCtRLgpjBThQ6G66yf2vYaf+q/aRypr82ikc4kqoLd82s5tRWBDdH6il4hJr0350GiyfrYBe+37yk8nXHK4vDDvDD+NfcbcKDHFUkB3QlOYqndRiZRdrKmMrNPuQ== X-Bogosity: Ham, tests=bogofilter, spamicity=0.001819, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: List-Subscribe: List-Unsubscribe: Hi, Here is the kernel config file: https://gist.github.com/TomAPU/64f5db0fe976a3e94a6dd2b621887cdd how long does it take to reproduce? Juefei will follow on this, and I just CC'ed him. On Wed, Aug 28, 2024 at 7:43=E2=80=AFPM Roman Gushchin wrote: > > On Wed, Aug 28, 2024 at 04:09:49PM -0700, Xingyu Li wrote: > > Hi, > > > > We found a bug in Linux 6.10 using syzkaller. It is possibly a null > > pointer dereference bug. > > The reprodcuer is > > https://gist.github.com/freexxxyyy/315733cb1dc3bc8cbe055b457c1918c0 > > Hello, > > thank you for the report. Can you, please, share the kernel config file? > Also, how long does it take to reproduce? > > Thanks! -- Yours sincerely, Xingyu