From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-2.6 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS, USER_AGENT_SANE_1 autolearn=no autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id C1804C10F29 for ; Mon, 9 Mar 2020 19:04:02 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 9C7D421655 for ; Mon, 9 Mar 2020 19:04:02 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1583780642; bh=OjqjiRfH2HloYi+ecAKXsWnEex+EbCkptWtQaFFrpkc=; h=Date:From:To:Cc:Subject:Reply-To:List-ID:From; b=zGcHjUVzVAKAEPfDIfePCYMR9NhiM2JVhPfCYwHXJfsop59HzCxn98J9ppeycHc0M i7vQqlQFLlm2RxWbUjFvaQfZ+XpsxOPI29NzSlema3RxaWuFOzrdj2vwilWipH/PSh CW0qi3JpeMq3RGQay4szbTGCqGX5fNInphALrvqQ= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727516AbgCITEB (ORCPT ); Mon, 9 Mar 2020 15:04:01 -0400 Received: from mail.kernel.org ([198.145.29.99]:47360 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727380AbgCITEB (ORCPT ); Mon, 9 Mar 2020 15:04:01 -0400 Received: from paulmck-ThinkPad-P72.home (50-39-105-78.bvtn.or.frontiernet.net [50.39.105.78]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id 1417420873; Mon, 9 Mar 2020 19:04:00 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1583780640; bh=OjqjiRfH2HloYi+ecAKXsWnEex+EbCkptWtQaFFrpkc=; h=Date:From:To:Cc:Subject:Reply-To:From; b=l0sMWuxbr+K422eqYJH9wRNE/QXq6gYYgAOr5oxilRpJ/f4YKsmC+BLyz1QHiEDPz fYZxjb6Z6QoIkRCUyhBUh6UrIU8HAZohQA9ZInnukuP2bETxovD2lhSeN+IhkZf0Ai EcWfiZjkfD3f4ccjONhx+TlI1WUSNgX6RaejCEM4= Received: by paulmck-ThinkPad-P72.home (Postfix, from userid 1000) id D78053522730; Mon, 9 Mar 2020 12:03:59 -0700 (PDT) Date: Mon, 9 Mar 2020 12:03:59 -0700 From: "Paul E. McKenney" To: linux-kernel@vger.kernel.org, kasan-dev@googlegroups.com, kernel-team@fb.com, mingo@kernel.org Cc: elver@google.com, andreyknvl@google.com, glider@google.com, dvyukov@google.com, cai@lca.pw, boqun.feng@gmail.com Subject: [PATCH kcsan 0/32] KCSAN commits for v5.7 Message-ID: <20200309190359.GA5822@paulmck-ThinkPad-P72> Reply-To: paulmck@kernel.org MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline User-Agent: Mutt/1.9.4 (2018-02-28) Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Hello! The patches in this series have already been posted, so this posting is just to give a heads up as to which of them are likely to be part of next week's KCSAN pull request. Unless otherwise noted, these are courtesy of Marco Elver. 1. kcsan: Prefer __always_inline for fast-path. 2. kcsan: Show full access type in report. 3. kcsan: Rate-limit reporting per data races. 4. kcsan: Make KCSAN compatible with lockdep. 5. kcsan: Address missing case with KCSAN_REPORT_VALUE_CHANGE_ONLY. 6. include/linux: Add instrumented.h infrastructure. 7. asm-generic, atomic-instrumented: Use generic instrumented.h. 8. asm-generic, kcsan: Add KCSAN instrumentation for bitops. 9. iov_iter: Use generic instrumented.h. 10. copy_to_user, copy_from_user: Use generic instrumented.h. 11. kcsan: Add docbook header for data_race(), courtesy of yours truly. 12. kcsan: Add option to assume plain aligned writes up to word size are atomic. 13. kcsan: Clarify Kconfig option. 14. kcsan: Cleanup of main KCSAN Kconfig option. 15. kcsan: Fix 0-sized checks. 16. kcsan: Introduce KCSAN_ACCESS_ASSERT access type. 17. kcsan: Introduce ASSERT_EXCLUSIVE_* macros. 18. kcsan: Add test to generate conflicts via debugfs. 19. kcsan: Expose core configuration parameters as module params. 20. kcsan: Fix misreporting if concurrent races on same address. 21. kcsan: Move interfaces that affects checks to kcsan-checks.h. 22. compiler.h, seqlock.h: Remove unnecessary kcsan.h includes. 23. kcsan: Introduce kcsan_value_change type. 24. kcsan: Add kcsan_set_access_mask() support. 25. kcsan: Introduce ASSERT_EXCLUSIVE_BITS(var, mask). 26. kcsan, trace: Make KCSAN compatible with tracing. 27. kcsan: Add option to allow watcher interruptions. 28. kcsan: Add option for verbose reporting. 29. kcsan: Add current->state to implicitly atomic. 30. kcsan: Fix a typo in a comment, courtesy of Qiujun Huang. 31. kcsan: Update Documentation/dev-tools/kcsan.rst. 32. kcsan: Update API documentation in kcsan-checks.h. Thanx, Paul ------------------------------------------------------------------------ Documentation/dev-tools/kcsan.rst | 227 ++++++---- arch/x86/lib/Makefile | 5 include/asm-generic/atomic-instrumented.h | 395 ++++++++---------- include/asm-generic/bitops/instrumented-atomic.h | 14 include/asm-generic/bitops/instrumented-lock.h | 10 include/asm-generic/bitops/instrumented-non-atomic.h | 16 include/linux/compiler.h | 16 include/linux/instrumented.h | 109 +++++ include/linux/kcsan-checks.h | 284 ++++++++++--- include/linux/kcsan.h | 46 -- include/linux/seqlock.h | 2 include/linux/uaccess.h | 14 init/init_task.c | 1 kernel/kcsan/Makefile | 2 kernel/kcsan/atomic.h | 23 - kernel/kcsan/core.c | 279 ++++++++---- kernel/kcsan/debugfs.c | 94 +++- kernel/kcsan/encoding.h | 14 kernel/kcsan/kcsan.h | 36 + kernel/kcsan/report.c | 414 ++++++++++++++++--- kernel/kcsan/test.c | 10 kernel/locking/Makefile | 3 kernel/trace/Makefile | 3 lib/Kconfig.kcsan | 114 ++++- lib/iov_iter.c | 7 lib/usercopy.c | 7 scripts/atomic/gen-atomic-instrumented.sh | 19 27 files changed, 1517 insertions(+), 647 deletions(-)