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Fri, 13 Feb 2026 23:45:47 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1771026347; bh=EWfaKJCaJC2GErydog5q9S65WnGr3OmrX5J6uwCpiPk=; h=Subject:From:Date:References:In-Reply-To:To:Cc:From; b=GZ6LJlyZWLf4CDD5S/zkdrpwC2BXwCpeTxgo1tIB1sIcZco7UXK8Hdj4gaVXMxXwz IyqXcv7lo9oeR//v00ELuNg66qlpw9bzGf7XqxUsNZMUy2EUCuPJfnzRQ1UU8fcLlH XG3ptvUaXIezNwP1k8g2s9vlYWAy5TLqIVLvJpQllknBDZYAWaxwdcpzqzL9a8DSFM vnZGWriKQS6uWTi8U36rK9OmdRe3GVAcGatiya2g+PIQbWFkJZLl68iGfdtr/ckr+d tNCTSaRznDdLmk0AHz72k2L6ZggIyYEgpgkRpO+AMCQt8ZOgVU9i01qo8tS+bjd69S YnCUoqkY9aHvg== Received: from [10.30.226.235] (localhost [IPv6:::1]) by aws-us-west-2-korg-oddjob-rhel9-1.codeaurora.org (Postfix) with ESMTP id 852673811A44; Fri, 13 Feb 2026 23:45:42 +0000 (UTC) Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Subject: Re: [PATCH mm-hotfixes-stable] procfs: fix possible double mmput() in do_procmap_query() From: patchwork-bot+netdevbpf@kernel.org Message-Id: <177102634133.2575868.4556838261873713161.git-patchwork-notify@kernel.org> Date: Fri, 13 Feb 2026 23:45:41 +0000 References: <20260210192738.3041609-1-andrii@kernel.org> In-Reply-To: <20260210192738.3041609-1-andrii@kernel.org> To: Andrii Nakryiko Cc: akpm@linux-foundation.org, linux-mm@kvack.org, linux-fsdevel@vger.kernel.org, bpf@vger.kernel.org, surenb@google.com, shakeel.butt@linux.dev, ruikai@pwno.io, tglx@kernel.org, syzbot+237b5b985b78c1da9600@syzkaller.appspotmail.com X-Stat-Signature: wq877ewapx8w6ojrbccqi4ofc3kajsgn X-Rspam-User: X-Rspamd-Server: rspam08 X-Rspamd-Queue-Id: BD1CAC0002 X-HE-Tag: 1771026348-44071 X-HE-Meta: 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 XVjoxArq 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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: Hello: This patch was applied to bpf/bpf.git (master) by Andrew Morton : On Tue, 10 Feb 2026 11:27:38 -0800 you wrote: > When user provides incorrectly sized buffer for build ID for PROCMAP_QUERY we > return with -ENAMETOOLONG error. After recent changes this condition happens > later, after we unlocked mmap_lock/per-VMA lock and did mmput(), so original > goto out is now wrong and will double-mmput() mm_struct. Fix by jumping > further to clean up only vm_file and name_buf. > > Fixes: b5cbacd7f86f ("procfs: avoid fetching build ID while holding VMA lock") > Reported-by: Ruikai Peng > Reported-by: Thomas Gleixner > Reported-by: syzbot+237b5b985b78c1da9600@syzkaller.appspotmail.com > Signed-off-by: Andrii Nakryiko > > [...] Here is the summary with links: - [mm-hotfixes-stable] procfs: fix possible double mmput() in do_procmap_query() https://git.kernel.org/bpf/bpf/c/61dc9f776705 You are awesome, thank you! -- Deet-doot-dot, I am a bot. https://korg.docs.kernel.org/patchwork/pwbot.html