From: Qian Cai <cai@lca.pw> To: paulmck@kernel.org Cc: Marco Elver <elver@google.com>, LKMM Maintainers -- Akira Yokosawa <akiyks@gmail.com>, Alan Stern <stern@rowland.harvard.edu>, Alexander Potapenko <glider@google.com>, Andrea Parri <parri.andrea@gmail.com>, Andrey Konovalov <andreyknvl@google.com>, Andy Lutomirski <luto@kernel.org>, Ard Biesheuvel <ard.biesheuvel@linaro.org>, Arnd Bergmann <arnd@arndb.de>, Boqun Feng <boqun.feng@gmail.com>, Borislav Petkov <bp@alien8.de>, Daniel Axtens <dja@axtens.net>, Daniel Lustig <dlustig@nvidia.com>, Dave Hansen <dave.hansen@linux.intel.com>, David Howells <dhowells@redhat.com>, Dmitry Vyukov <dvyukov@google.com>, "H. Peter Anvin" <hpa@zytor.com>, Ingo Molnar <mingo@redhat.com>, Jade Alglave <j.alglave@ucl.ac.uk>, Joel Fernandes <joel@joelfernandes.org>, Jonathan Corbet <corbet@lwn.net>, Josh Poimboeuf <jpoimboe@redhat.com>, Luc Maranget <luc.maranget@inria.fr>, Mark Rutland <Mark.Rutland@arm.com>, Nicholas Piggin <npiggin@gmail.com>, Peter Zijlstra <peterz@infradead.org>, Thomas Gleixner <tglx@linutronix.de>, Will Deacon <will@kernel.org>, Eric Dumazet <edumazet@google.com>, kasan-dev <kasan-dev@googlegroups.com>, linux-arch <linux-arch@vger.kernel.org>, "open list:DOCUMENTATION" <linux-doc@vger.kernel.org>, linux-efi@vger.kernel.org, Linux Kbuild mailing list <linux-kbuild@vger.kernel.org>, LKML <linux-kernel@vger.kernel.org>, Linux Memory Management List <linux-mm@kvack.org>, the arch/x86 maintainers <x86@kernel.org> Subject: Re: [PATCH v4 01/10] kcsan: Add Kernel Concurrency Sanitizer infrastructure Date: Tue, 14 Jan 2020 15:30:53 -0500 [thread overview] Message-ID: <F185919B-2D86-43B6-9BEC-D14D72871A58@lca.pw> (raw) In-Reply-To: <20200114192220.GS2935@paulmck-ThinkPad-P72> > On Jan 14, 2020, at 2:22 PM, Paul E. McKenney <paulmck@kernel.org> wrote: > > Just so I understand... Does this problem happen even in CONFIG_KCSAN=n > kernels? No. > > I have been running extensive CONFIG_KSCAN=y rcutorture tests for quite > awhile now, so even if this only happens for CONFIG_KSCAN=y, it is not > like it affects everyone. > > Yes, it should be fixed, and Marco does have a patch on the way. The concern is really about setting KSCAN=y in a distro debug kernel where it has other debug options. I’ll try to dig into more of those issues in the next few days.
WARNING: multiple messages have this Message-ID (diff)
From: Qian Cai <cai@lca.pw> To: paulmck@kernel.org Cc: Marco Elver <elver@google.com>, LKMM Maintainers -- Akira Yokosawa <akiyks@gmail.com>, Alan Stern <stern@rowland.harvard.edu>, Alexander Potapenko <glider@google.com>, Andrea Parri <parri.andrea@gmail.com>, Andrey Konovalov <andreyknvl@google.com>, Andy Lutomirski <luto@kernel.org>, Ard Biesheuvel <ard.biesheuvel@linaro.org>, Arnd Bergmann <arnd@arndb.de>, Boqun Feng <boqun.feng@gmail.com>, Borislav Petkov <bp@alien8.de>, Daniel Axtens <dja@axtens.net>, Daniel Lustig <dlustig@nvidia.com>, Dave Hansen <dave.hansen@linux.intel.com>, David Howells <dhowells@redhat.com>, Dmitry Vyukov <dvyukov@google.com>, "H. Peter Anvin" <hpa@zytor.com>, Ingo Molnar <mingo@redhat.com>, Jade Alglave <j.alglave@ucl.ac.uk>, Joel Fernandes <joel@joelfernandes.org> Subject: Re: [PATCH v4 01/10] kcsan: Add Kernel Concurrency Sanitizer infrastructure Date: Tue, 14 Jan 2020 15:30:53 -0500 [thread overview] Message-ID: <F185919B-2D86-43B6-9BEC-D14D72871A58@lca.pw> (raw) In-Reply-To: <20200114192220.GS2935@paulmck-ThinkPad-P72> > On Jan 14, 2020, at 2:22 PM, Paul E. McKenney <paulmck@kernel.org> wrote: > > Just so I understand... Does this problem happen even in CONFIG_KCSAN=n > kernels? No. > > I have been running extensive CONFIG_KSCAN=y rcutorture tests for quite > awhile now, so even if this only happens for CONFIG_KSCAN=y, it is not > like it affects everyone. > > Yes, it should be fixed, and Marco does have a patch on the way. The concern is really about setting KSCAN=y in a distro debug kernel where it has other debug options. I’ll try to dig into more of those issues in the next few days.
next prev parent reply other threads:[~2020-01-14 20:30 UTC|newest] Thread overview: 100+ messages / expand[flat|nested] mbox.gz Atom feed top 2019-11-14 18:02 [PATCH v4 00/10] Add Kernel Concurrency Sanitizer (KCSAN) Marco Elver 2019-11-14 18:02 ` Marco Elver 2019-11-14 18:02 ` Marco Elver 2019-11-14 18:02 ` [PATCH v4 01/10] kcsan: Add Kernel Concurrency Sanitizer infrastructure Marco Elver 2019-11-14 18:02 ` Marco Elver 2019-11-14 18:02 ` Marco Elver 2019-11-19 19:27 ` Qian Cai 2019-11-19 19:27 ` Qian Cai 2019-11-19 19:27 ` Qian Cai 2019-11-19 19:54 ` Marco Elver 2019-11-19 19:54 ` Marco Elver 2019-11-19 19:54 ` Marco Elver 2019-11-19 21:42 ` Qian Cai 2019-11-19 21:42 ` Qian Cai 2019-11-19 21:53 ` Marco Elver 2019-11-19 21:53 ` Marco Elver 2019-11-19 21:53 ` Marco Elver 2020-01-03 5:13 ` Qian Cai 2020-01-03 5:13 ` Qian Cai 2020-01-06 12:46 ` Marco Elver 2020-01-06 12:46 ` Marco Elver 2020-01-06 12:46 ` Marco Elver 2020-01-14 11:08 ` Qian Cai 2020-01-14 11:08 ` Qian Cai 2020-01-14 12:51 ` Marco Elver 2020-01-14 12:51 ` Marco Elver 2020-01-14 12:51 ` Marco Elver 2020-01-14 19:22 ` Paul E. McKenney 2020-01-14 19:22 ` Paul E. McKenney 2020-01-14 20:30 ` Qian Cai [this message] 2020-01-14 20:30 ` Qian Cai 2020-01-14 21:34 ` Paul E. McKenney 2020-01-14 21:34 ` Paul E. McKenney 2020-01-14 21:48 ` Qian Cai 2020-01-14 21:48 ` Qian Cai 2020-01-14 22:09 ` Paul E. McKenney 2020-01-14 22:09 ` Paul E. McKenney 2019-11-14 18:02 ` [PATCH v4 02/10] include/linux/compiler.h: Introduce data_race(expr) macro Marco Elver 2019-11-14 18:02 ` Marco Elver 2019-11-14 18:02 ` Marco Elver 2019-11-14 18:02 ` [PATCH v4 03/10] kcsan: Add Documentation entry in dev-tools Marco Elver 2019-11-14 18:02 ` Marco Elver 2019-11-14 18:02 ` Marco Elver 2019-11-14 18:02 ` [PATCH v4 04/10] objtool, kcsan: Add KCSAN runtime functions to whitelist Marco Elver 2019-11-14 18:02 ` Marco Elver 2019-11-14 18:02 ` Marco Elver 2019-11-14 18:02 ` [PATCH v4 05/10] build, kcsan: Add KCSAN build exceptions Marco Elver 2019-11-14 18:02 ` Marco Elver 2019-11-14 18:02 ` Marco Elver 2019-11-14 18:02 ` [PATCH v4 06/10] seqlock, kcsan: Add annotations for KCSAN Marco Elver 2019-11-14 18:02 ` Marco Elver 2019-11-14 18:02 ` Marco Elver 2019-11-14 18:03 ` [PATCH v4 07/10] seqlock: Require WRITE_ONCE surrounding raw_seqcount_barrier Marco Elver 2019-11-14 18:03 ` Marco Elver 2019-11-14 18:03 ` Marco Elver 2019-11-14 18:03 ` [PATCH v4 08/10] asm-generic, kcsan: Add KCSAN instrumentation for bitops Marco Elver 2019-11-14 18:03 ` Marco Elver 2019-11-14 18:03 ` Marco Elver 2019-11-15 11:55 ` Marco Elver 2019-11-15 11:55 ` Marco Elver 2019-11-14 18:03 ` [PATCH v4 09/10] locking/atomics, kcsan: Add KCSAN instrumentation Marco Elver 2019-11-14 18:03 ` Marco Elver 2019-11-14 18:03 ` Marco Elver 2019-11-14 18:03 ` [PATCH v4 10/10] x86, kcsan: Enable KCSAN for x86 Marco Elver 2019-11-14 18:03 ` Marco Elver 2019-11-14 18:03 ` Marco Elver 2019-11-14 19:50 ` [PATCH v4 00/10] Add Kernel Concurrency Sanitizer (KCSAN) Paul E. McKenney 2019-11-14 21:33 ` Marco Elver 2019-11-14 22:15 ` Paul E. McKenney 2019-11-15 12:02 ` Marco Elver 2019-11-15 12:02 ` Marco Elver 2019-11-15 12:02 ` Marco Elver 2019-11-15 16:41 ` Paul E. McKenney 2019-11-15 16:41 ` Paul E. McKenney 2019-11-15 17:14 ` Marco Elver 2019-11-15 17:14 ` Marco Elver 2019-11-15 17:14 ` Marco Elver 2019-11-15 20:43 ` Paul E. McKenney 2019-11-15 20:43 ` Paul E. McKenney 2019-11-16 8:20 ` Marco Elver 2019-11-16 8:20 ` Marco Elver 2019-11-16 8:20 ` Marco Elver 2019-11-16 15:34 ` Paul E. McKenney 2019-11-16 15:34 ` Paul E. McKenney 2019-11-16 18:09 ` Marco Elver 2019-11-16 18:09 ` Marco Elver 2019-11-16 18:09 ` Marco Elver 2019-11-16 18:28 ` Paul E. McKenney 2019-11-16 18:28 ` Paul E. McKenney 2019-11-19 19:50 ` Qian Cai 2019-11-19 19:50 ` Qian Cai 2019-11-19 19:50 ` Qian Cai 2019-11-19 20:12 ` Qian Cai 2019-11-19 20:12 ` Qian Cai 2019-11-19 20:12 ` Qian Cai 2019-11-19 21:50 ` Marco Elver 2019-11-19 21:50 ` Marco Elver 2019-11-19 21:50 ` Marco Elver 2019-11-20 15:54 ` Marco Elver 2019-11-20 15:54 ` Marco Elver
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