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[124.209.188.1]) by smtp.gmail.com with ESMTPSA id ja3-20020a170902efc300b001a65258011bsm6458214plb.26.2023.04.16.19.44.49 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Sun, 16 Apr 2023 19:44:50 -0700 (PDT) Date: Mon, 17 Apr 2023 11:44:46 +0900 From: Sergey Senozhatsky To: Yu Zhao Cc: Sergey Senozhatsky , Minchan Kim , Andrew Morton , Yosry Ahmed , linux-kernel@vger.kernel.org, linux-mm@kvack.org Subject: Re: [PATCHv4 0/4] zsmalloc: fine-grained fullness and new compaction algorithm Message-ID: <20230417024446.GL25053@google.com> References: <20230304034835.2082479-1-senozhatsky@chromium.org> <20230416151853.GK25053@google.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: X-Rspam-User: X-Rspamd-Server: rspam03 X-Stat-Signature: hch9dxazme61c4brfzn9em17j6kxt8po X-Rspamd-Queue-Id: 999B72000C X-HE-Tag: 1681699492-618235 X-HE-Meta: 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 POU6zwtY YsDzxafEYoOjkJwF1EZUWRzcvRWo4Wcv6K5PcX7/3NNrli6f+RxerSq1UYmeQ9AMbaqNIuPs8UWbNHuf/Ml14wwuZMy/VQ6rsEoF6DLb4zFtj5PLolxdTvZ5eP5UjOWEyRDxrxu+Wk2o1J60Sph7C7Kj8GyH0HpFXQclZA9L+hW7H4ivGKkwD/p8jgOHx4y9WRZWX2I2Sjs01/GuCY6gv928mdkw1yjLyHjS1iy1fS+0q/D2zdPXvFJoLmAIqb079YJItH+QTSRgYcXqtgtV/7/69gTOpEfxWrkB39XxA6e5JXYpz2T8nWh10pnTYPBDs464otDLc3xvcEKdpqYf+7n3TGqfv35dBN5j3DWT3yy8tYWJzLaIYKEQGHg== X-Bogosity: Ham, tests=bogofilter, spamicity=0.010160, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: On (23/04/16 13:27), Yu Zhao wrote: > > Hi, > > > > Did you bisect it down to this series? > > Not exactly -- since this series was the only suspect I had, I cherry > picked it to v6.3-rc6 and verified it is the culprit. Can't reproduce it yet. One of the theories is that get_fullness_group() maybe returns an invalid index, but I don't immediately see how would it do so. Is the problem reproducible? Do you run some specific test?