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From: Shakeel Butt Date: Sat, 24 May 2025 21:35:02 -0700 X-Gmail-Original-Message-ID: X-Gm-Features: AX0GCFt70a-dohn4OLQpWCm28zJVtirQYFcqEHU9DglNx-ZcAPgnEltbZj2Y-_E Message-ID: Subject: Re: [syzbot] [cgroups?] [mm?] BUG: unable to handle kernel paging request in percpu_ref_get_many (2) To: syzbot Cc: akpm@linux-foundation.org, cgroups@vger.kernel.org, hannes@cmpxchg.org, linux-kernel@vger.kernel.org, linux-mm@kvack.org, mhocko@kernel.org, muchun.song@linux.dev, roman.gushchin@linux.dev, syzkaller-bugs@googlegroups.com Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable X-Migadu-Flow: FLOW_OUT X-Rspamd-Server: rspam06 X-Rspamd-Queue-Id: 005B4180002 X-Stat-Signature: 3o6aqrjt8ibmpf1ia4fk6aysaq54n9oj X-Rspam-User: X-HE-Tag: 1748147722-613335 X-HE-Meta: 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 boz65Qzg 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 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 Sat, May 24, 2025 at 5:43=E2=80=AFPM syzbot wrote: > > Hello, > > syzbot found the following issue on: > > HEAD commit: d7fa1af5b33e Merge branch 'for-next/core' into for-kernel= ci > git tree: git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux= .git for-kernelci > console output: https://syzkaller.appspot.com/x/log.txt?x=3D155428e858000= 0 > kernel config: https://syzkaller.appspot.com/x/.config?x=3D89c13de706fbf= 07a > dashboard link: https://syzkaller.appspot.com/bug?extid=3D3109abc43c8fcf1= 5212b > compiler: Debian clang version 20.1.6 (++20250514063057+1e4d39e0775= 7-1~exp1~20250514183223.118), Debian LLD 20.1.6 > userspace arch: arm64 > > Unfortunately, I don't have any reproducer for this issue yet. > The tree of this report does not contain the latest (unmerged into linus tree) mm patches from mm-tree. I will just wait for the reproducer.