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Biederman) To: Linus Torvalds Cc: Adam Zabrocki , Linux Kernel Mailing List , Kernel Hardening , Jann Horn , Oleg Nesterov , Andy Lutomirski , Bernd Edlinger , Kees Cook , Andrew Morton , stable References: <20200324215049.GA3710@pi3.com.pl> <202003291528.730A329@keescook> <87zhbvlyq7.fsf_-_@x220.int.ebiederm.org> Date: Wed, 01 Apr 2020 16:03:20 -0500 In-Reply-To: (Linus Torvalds's message of "Wed, 1 Apr 2020 13:55:11 -0700") Message-ID: <87sghmnckn.fsf@x220.int.ebiederm.org> User-Agent: Gnus/5.13 (Gnus v5.13) Emacs/26.1 (gnu/linux) MIME-Version: 1.0 Content-Type: text/plain X-XM-SPF: eid=1jJkYk-0006fM-EY;;;mid=<87sghmnckn.fsf@x220.int.ebiederm.org>;;;hst=in02.mta.xmission.com;;;ip=68.227.160.95;;;frm=ebiederm@xmission.com;;;spf=neutral X-XM-AID: U2FsdGVkX1+c7hhxNri2jefkPydPIS+82k6pfB21yV8= X-SA-Exim-Connect-IP: 68.227.160.95 X-SA-Exim-Mail-From: ebiederm@xmission.com X-Spam-Checker-Version: SpamAssassin 3.4.2 (2018-09-13) on sa06.xmission.com X-Spam-Level: X-Spam-Status: No, score=-0.2 required=8.0 tests=ALL_TRUSTED,BAYES_50, DCC_CHECK_NEGATIVE,T_TM2_M_HEADER_IN_MSG autolearn=disabled version=3.4.2 X-Spam-Report: * -1.0 ALL_TRUSTED Passed through trusted hosts only via SMTP * 0.8 BAYES_50 BODY: Bayes spam probability is 40 to 60% * [score: 0.5000] * 0.0 T_TM2_M_HEADER_IN_MSG BODY: No description available. * -0.0 DCC_CHECK_NEGATIVE Not listed in DCC * [sa06 1397; Body=1 Fuz1=1 Fuz2=1] X-Spam-DCC: XMission; sa06 1397; Body=1 Fuz1=1 Fuz2=1 X-Spam-Combo: ;Linus Torvalds X-Spam-Relay-Country: X-Spam-Timing: total 389 ms - load_scoreonly_sql: 0.04 (0.0%), signal_user_changed: 11 (2.7%), b_tie_ro: 9 (2.4%), parse: 0.71 (0.2%), extract_message_metadata: 12 (3.2%), get_uri_detail_list: 0.65 (0.2%), tests_pri_-1000: 23 (5.8%), tests_pri_-950: 1.22 (0.3%), tests_pri_-900: 0.99 (0.3%), tests_pri_-90: 87 (22.4%), check_bayes: 86 (22.0%), b_tokenize: 4.8 (1.2%), b_tok_get_all: 6 (1.5%), b_comp_prob: 1.63 (0.4%), b_tok_touch_all: 70 (18.0%), b_finish: 0.89 (0.2%), tests_pri_0: 239 (61.5%), check_dkim_signature: 0.45 (0.1%), check_dkim_adsp: 2.3 (0.6%), poll_dns_idle: 0.75 (0.2%), tests_pri_10: 3.1 (0.8%), tests_pri_500: 9 (2.3%), rewrite_mail: 0.00 (0.0%) Subject: Re: [PATCH] signal: Extend exec_id to 64bits X-Spam-Flag: No X-SA-Exim-Version: 4.2.1 (built Thu, 05 May 2016 13:38:54 -0600) X-SA-Exim-Scanned: Yes (on in02.mta.xmission.com) Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Linus Torvalds writes: > On Wed, Apr 1, 2020 at 1:50 PM Eric W. Biederman wrote: >> >> I have updated the update of exec_id on exec to use WRITE_ONCE >> and the read of exec_id in do_notify_parent to use READ_ONCE >> to make it clear that there is no locking between these two >> locations. > > Ack, makes sense to me. > > Just put it in your branch, this doesn't look urgent, considering that > it's something that has been around forever. Done Eric