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AJvYcCVMDfHU4G20vXgiB9MZmRUeAqq9Zrg9tB0CEa5zyFHwQswY0EQ72QnJoM+vA5uICPRGXCkop0UZOw==@kvack.org X-Gm-Message-State: AOJu0YxBGnVR0M5L07vbPukRzIQCmszh1utSpp9EdiT1QYiz55Uosmvi T7Wk8tenT3C+IFb2uSD+Pc2iPvC7AZHRwltFRbzrUIK7fvCav34wo2/3Xt73LWk+a76Mk7jc4vE Q3tRsPecGNJI1mPGM9ogO6/W7c+D4zXDj8KOp X-Gm-Gg: ASbGncuY4xhdjlWSSohDwl+DfhvMVR2Yo4LozRwnJg7Z7oGYDjP5DmAIoiThQV0YoCv V9qdoWeR9kYavnOQv1ORTXcruWUACoWDzGp5VJ9bEs2rbJKCee0YdowqqbaR3LT0pIcBJi6c= X-Google-Smtp-Source: AGHT+IF5HmwrmCxLfUtA3z/YQ+1dk+iaXES5lSbGoA3AV1Eit75QFd6ZtDPKbBbrFd+n9gt8+8syyHpLWEApY4xRvoc= X-Received: by 2002:a05:6102:38c8:b0:4b2:7534:f26e with SMTP id ada2fe7eead31-4b2cc38e4cdmr16350169137.16.1735066183149; Tue, 24 Dec 2024 10:49:43 -0800 (PST) MIME-Version: 1.0 References: <6767ed86.050a0220.25abdd.013f.GAE@google.com> In-Reply-To: <6767ed86.050a0220.25abdd.013f.GAE@google.com> From: Yu Zhao Date: Tue, 24 Dec 2024 11:49:05 -0700 Message-ID: Subject: Re: [syzbot] [mm?] general protection fault in workingset_refault To: syzbot , akpm@linux-foundation.org Cc: linux-kernel@vger.kernel.org, linux-mm@kvack.org, syzkaller-bugs@googlegroups.com Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable X-Rspamd-Server: rspam04 X-Rspamd-Queue-Id: 36561C000C X-Stat-Signature: sxjppobwmx38orz9g3f5fhkdaxq6wyr3 X-Rspam-User: X-HE-Tag: 1735066143-275976 X-HE-Meta: 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 Qd2zm6dC 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 X-Bogosity: Ham, tests=bogofilter, spamicity=0.007584, 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 Sun, Dec 22, 2024 at 3:44=E2=80=AFAM syzbot wrote: > > Hello, > > syzbot found the following issue on: > > HEAD commit: 8faabc041a00 Merge tag 'net-6.13-rc4' of git://git.kernel= ... > git tree: upstream This is the mainline. > console output: https://syzkaller.appspot.com/x/log.txt?x=3D10f39cf858000= 0 > kernel config: https://syzkaller.appspot.com/x/.config?x=3Dc22efbd20f8da= 769 > dashboard link: https://syzkaller.appspot.com/bug?extid=3Dd21d8cd32443d6f= bded1 > compiler: gcc (Debian 12.2.0-14) 12.2.0, GNU ld (GNU Binutils for D= ebian) 2.40 > > Unfortunately, I don't have any reproducer for this issue yet. > > Downloadable assets: > disk image: https://storage.googleapis.com/syzbot-assets/0bdb6cecaf61/dis= k-8faabc04.raw.xz > vmlinux: https://storage.googleapis.com/syzbot-assets/98b22dfadac0/vmlinu= x-8faabc04.xz > kernel image: https://storage.googleapis.com/syzbot-assets/65a511d3ba7f/b= zImage-8faabc04.xz > > IMPORTANT: if you fix the issue, please add the following tag to the comm= it: > Reported-by: syzbot+d21d8cd32443d6fbded1@syzkaller.appspotmail.com > > Oops: general protection fault, probably for non-canonical address 0xdfff= fc0000000998: 0000 [#1] PREEMPT SMP KASAN PTI > KASAN: probably user-memory-access in range [0x0000000000004cc0-0x0000000= 000004cc7] > CPU: 1 UID: 0 PID: 6298 Comm: syz.0.89 Not tainted 6.13.0-rc3-syzkaller-0= 0136-g8faabc041a00 #0 > Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS G= oogle 11/25/2024 > RIP: 0010:mem_cgroup_lruvec include/linux/memcontrol.h:707 [inline] > RIP: 0010:lru_gen_test_recent mm/workingset.c:274 [inline] > RIP: 0010:lru_gen_refault mm/workingset.c:293 [inline] > RIP: 0010:workingset_refault+0x234/0x1390 mm/workingset.c:548 So it can' be related to the recent changes in mm-unstable [1]. But I keep an eye on it regardless. [1] https://lore.kernel.org/20241207221522.2250311-1-yuzhao@google.com/