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Biederman) To: Qian Cai Cc: Stephen Rothwell , Andrew Morton , Jeff Layton , "J. Bruce Fields" , linux-fsdevel@vger.kernel.org, Kees Cook , LKML , Alexey Dobriyan , Alexey Gladkov References: <06B50A1C-406F-4057-BFA8-3A7729EA7469@lca.pw> Date: Thu, 23 Apr 2020 16:11:58 -0500 In-Reply-To: (Qian Cai's message of "Thu, 23 Apr 2020 16:11:48 -0400") Message-ID: <877dy5x5y9.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=1jRjBb-0007nr-F3;;;mid=<877dy5x5y9.fsf@x220.int.ebiederm.org>;;;hst=in01.mta.xmission.com;;;ip=68.227.160.95;;;frm=ebiederm@xmission.com;;;spf=neutral X-XM-AID: U2FsdGVkX18X/dkRBG1ZIo4nUQGAwX9BujYXDfYLa/s= 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=5.5 required=8.0 tests=ALL_TRUSTED,BAYES_50, DCC_CHECK_NEGATIVE,T_TM2_M_HEADER_IN_MSG,T_TooManySym_01,XMSubLong, XM_Palau_URI 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: 0.4973] * 0.7 XMSubLong Long Subject * 0.0 T_TM2_M_HEADER_IN_MSG BODY: No description available. * 5.0 XM_Palau_URI RAW: Palau .pw URI * -0.0 DCC_CHECK_NEGATIVE Not listed in DCC * [sa06 1397; Body=1 Fuz1=1 Fuz2=1] * 0.0 T_TooManySym_01 4+ unique symbols in subject X-Spam-DCC: XMission; sa06 1397; Body=1 Fuz1=1 Fuz2=1 X-Spam-Combo: *****;Qian Cai X-Spam-Relay-Country: X-Spam-Timing: total 742 ms - load_scoreonly_sql: 0.04 (0.0%), signal_user_changed: 12 (1.6%), b_tie_ro: 11 (1.4%), parse: 1.30 (0.2%), extract_message_metadata: 15 (2.0%), get_uri_detail_list: 0.89 (0.1%), tests_pri_-1000: 5 (0.7%), tests_pri_-950: 1.34 (0.2%), tests_pri_-900: 1.06 (0.1%), tests_pri_-90: 65 (8.7%), check_bayes: 63 (8.5%), b_tokenize: 4.8 (0.6%), b_tok_get_all: 5 (0.7%), b_comp_prob: 1.62 (0.2%), b_tok_touch_all: 48 (6.5%), b_finish: 0.95 (0.1%), tests_pri_0: 627 (84.6%), check_dkim_signature: 0.72 (0.1%), check_dkim_adsp: 2.5 (0.3%), poll_dns_idle: 0.42 (0.1%), tests_pri_10: 2.0 (0.3%), tests_pri_500: 8 (1.1%), rewrite_mail: 0.00 (0.0%) Subject: Re: out-of-bounds in pid_nr_ns() due to "proc: modernize proc to support multiple private instances" 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 in01.mta.xmission.com) Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Qian Cai writes: > Eric, Stephen, can you pull out this series while Alexey is getting to > the bottom of this slab-out-of-bounds? Done several hours ago on my end. fs/locks.c and fs/security/tomoyo/realpath.c were rolling proc_pid_ns by hand and we need to correct that before Alexey's patches are safe. That is inprogress now. Eric