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c=relaxed/simple; d=linux-foundation.org; s=korg; t=1688572148; bh=wUQaHnYHUwnVipBpt2LgwmRDolTVE3ThEDGnTGR+Eds=; h=Date:From:To:Cc:Subject:In-Reply-To:References:From; b=fG4XT65n6cKnLJenjLqQmGWEBlAiyjkMKt0HSpYaUV5eR2EHSpIgV0SOmzYSapEc3 7LXqOIeoCOXNXSWuuaxx3BN+jUfYb/G5r213KO5LsowSdYtl+rA0e7BctzdnCsKY+d btp/WMyfyUG/4qN91o+MTZq7O12MH+TLIfEZM4rE= Date: Wed, 5 Jul 2023 08:49:06 -0700 From: Andrew Morton To: Linux regressions mailing list Cc: "Linux regression tracking (Thorsten Leemhuis)" , Suren Baghdasaryan , Bagas Sanjaya , Jacob Young , Laurent Dufour , Linux Kernel Mailing List , Linux Memory Management , Linux PowerPC , Linux ARM , Greg KH Subject: Re: Fwd: Memory corruption in multithreaded user space program while calling fork Message-Id: <20230705084906.22eee41e6e72da588fce5a48@linux-foundation.org> In-Reply-To: <7668c45a-70b1-dc2f-d0f5-c0e76ec17145@leemhuis.info> References: <5c7455db-4ed8-b54f-e2d5-d2811908123d@leemhuis.info> <2023070359-evasive-regroup-f3b8@gregkh> <2023070453-plod-swipe-cfbf@gregkh> <20230704091808.aa2ed3c11a5351d9bf217ac9@linux-foundation.org> <2023070509-undertow-pulverize-5adc@gregkh> <7668c45a-70b1-dc2f-d0f5-c0e76ec17145@leemhuis.info> X-Mailer: Sylpheed 3.8.0beta1 (GTK+ 2.24.33; x86_64-pc-linux-gnu) Mime-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit X-Rspamd-Queue-Id: AE82F140023 X-Rspam-User: X-Rspamd-Server: rspam11 X-Stat-Signature: kfoj966gxgea5yu5t36nse3qhafmwcob X-HE-Tag: 1688572149-51345 X-HE-Meta: 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 wXIXcjmX KNSyzwJhvTIe6xXLsCDWvMGk53d+XD9hPYffbxJ8byns7CVeDCxaXPFyGYL1LXbFTKMNbaPolTSpjAt8Q6vhLOFcMTw4RtCILXOZ/ArlGfyOqDzZ72G1CiabryEHN3pu6zQ+eWffriWPy8EuifmuL0dqlQkuqyr+XTdUS6RtGawa+1APAnfh9APnDCfSJIAdekii412SSwfN7cUZ6H9z7BQVFY5guT3ijQp/YhlcGiXGuwAW+YtYMFjbJwl6eeySVF3gpkleFwUcZDqy5K1SRqu3sK9N8Z5XOf1/G6+T5KJ8hGMcQh5l24NkheHl970XA8PKL2yknBEMY+qLBgx8xhlEGikA8Yq5Al4mq6GjzsjQYGJn2mcdRcAp6W3409paBhMGnmfv7841BOsmmH6oFnGp52D0M3H/Ia8jnDRhYE8hRIO4waXOBcMTYMr6XSWpbritPZXx/DbiTG3c= 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: On Wed, 5 Jul 2023 10:51:57 +0200 "Linux regression tracking (Thorsten Leemhuis)" wrote: > >>> I'm in wait-a-few-days-mode on this. To see if we have a backportable > >>> fix rather than disabling the feature in -stable. > > Andrew, how long will you remain in "wait-a-few-days-mode"? Given what > Greg said below and that we already had three reports I know of I'd > prefer if we could fix this rather sooner than later in mainline -- > especially as Arch Linux and openSUSE Tumbleweed likely have switched to > 6.4.y already or will do so soon. I'll send today's 2-patch series to Linus today or tomorrow.