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Mon, 21 Sep 2026 10:15:36 -0400 X-MC-Unique: nnOlowmtPSWcbtsMAlShDA-1 X-Mimecast-MFC-AGG-ID: nnOlowmtPSWcbtsMAlShDA_1790000133 Received: from mx-prod-int-08.mail-002.prod.us-west-2.aws.redhat.com (mx-prod-int-08.mail-002.prod.us-west-2.aws.redhat.com [10.30.177.111]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (2048 bits) server-digest SHA256) (No client certificate requested) by mx-prod-mc-08.mail-002.prod.us-west-2.aws.redhat.com (Postfix) with ESMTPS id 8C60D180061E; Mon, 21 Sep 2026 14:15:33 +0000 (UTC) Received: from fedora (headnet03.pony-001.prod.iad2.dc.redhat.com [10.2.32.114]) by mx-prod-int-08.mail-002.prod.us-west-2.aws.redhat.com (Postfix) with SMTP id 1FB2A180034F; Mon, 21 Sep 2026 14:15:29 +0000 (UTC) Received: by fedora (nbSMTP-1.00) for uid 1000 oleg@redhat.com; Mon, 21 Sep 2026 16:15:33 +0200 (CEST) Date: Mon, 21 Sep 2026 16:15:28 +0200 From: Oleg Nesterov To: Christian Brauner Cc: Chris Mason , linux-fsdevel@vger.kernel.org, Jens Axboe , Alexander Viro , Jan Kara , NeilBrown , Ingo Molnar , Peter Zijlstra , linux-mm@kvack.org, io-uring@vger.kernel.org Subject: Re: [PATCH v3 13/17] fork: move the coredump and exec checks into create_io_thread() Message-ID: References: <20260921-work-coredump-fixes-v3-0-8e4adb1619e6@kernel.org> <20260921-work-coredump-fixes-v3-13-8e4adb1619e6@kernel.org> MIME-Version: 1.0 In-Reply-To: <20260921-work-coredump-fixes-v3-13-8e4adb1619e6@kernel.org> X-Scanned-By: MIMEDefang 3.4.1 on 10.30.177.111 X-Mimecast-MFC-PROC-ID: Y3c9WoN9e-v2ka2xVJjl3THK8TymQUCi41iBUvDbl1U_1790000133 X-Mimecast-Originator: redhat.com Content-Type: text/plain; charset=us-ascii Content-Disposition: inline X-Rspamd-Server: rspam05 X-Rspamd-Queue-Id: 0A95640012 X-Stat-Signature: yjkq6yr83q6haerw6mwy3z8b8n5tq9i8 X-Rspam-User: X-HE-Tag: 1790000140-94474 X-HE-Meta: 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 Wa4Et8Rb Dc6bUeqlCQ80+gtBKCA8wvn1NM6suUxM3A0jbE5Em5BwezGaiKd9z1LpToMoTgoT8n7rpkJEAF0l/79B0Lgb7Voy3HMxksojLLVkTNBtw3chpi+B7MdKoeiBWlGy2Z6MiF/hkeWUd4hOuqmQFcmpJLwqRnCuy3toH6auRG4n++QvO1tfkYGW8aFEWzOewFaVNIFKo0fwlsvSYG7JC6LI3t9bnchIHxAKihVbXwXKpT/WbBIRjTDkZM/QUnk7LEqRPpxoA9bRt9Nx1+oSssjXEds2bOgRfJzwFz+CMpIbxZryXzqVhKrJMz4iuMuDMMUubsSahKtLcW8UCrfVHGUweF9SWhDoVyD7YqRwllRj0yQZI5afcdN4z4loYwUNQB9fWO8i+Vc23qbyLifQ48YX/bKD6R18KwsfszAdLfjjBonREtCcOqCRw3XqJIXYJ9xLWyPXD Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: List-Subscribe: List-Unsubscribe: On 09/21, Christian Brauner wrote: > > --- a/kernel/fork.c > +++ b/kernel/fork.c > @@ -2706,6 +2706,10 @@ struct task_struct *create_io_thread(int (*fn)(void *), void *arg, int node) > .user_worker = 1, > }; > > + /* A creator past its fatal signal gets no thread. */ > + if (current->flags & PF_SIGNALED) > + return ERR_PTR(-EINTR); Acked-by: Oleg Nesterov