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[209.85.167.42]) by smtp.gmail.com with ESMTPSA id v12sm495241ljv.65.2021.07.02.17.28.31 for (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Fri, 02 Jul 2021 17:28:31 -0700 (PDT) Received: by mail-lf1-f42.google.com with SMTP id d16so21118539lfn.3 for ; Fri, 02 Jul 2021 17:28:31 -0700 (PDT) X-Received: by 2002:a05:6512:3585:: with SMTP id m5mr920647lfr.253.1625272111199; Fri, 02 Jul 2021 17:28:31 -0700 (PDT) MIME-Version: 1.0 References: <20210630184624.9ca1937310b0dd5ce66b30e7@linux-foundation.org> In-Reply-To: <20210630184624.9ca1937310b0dd5ce66b30e7@linux-foundation.org> From: Linus Torvalds Date: Fri, 2 Jul 2021 17:28:15 -0700 X-Gmail-Original-Message-ID: Message-ID: Subject: Re: incoming To: Andrew Morton Cc: Linux-MM , mm-commits@vger.kernel.org Content-Type: text/plain; charset="UTF-8" X-Rspamd-Server: rspam01 X-Rspamd-Queue-Id: AA29290000A7 Authentication-Results: imf23.hostedemail.com; dkim=pass header.d=linux-foundation.org header.s=google header.b=MebRkDZn; spf=pass (imf23.hostedemail.com: domain of torvalds@linuxfoundation.org designates 209.85.167.51 as permitted sender) smtp.mailfrom=torvalds@linuxfoundation.org; dmarc=none X-Stat-Signature: p73r7uxrbxsn8fqzd7mmj95iqemm7zgy X-HE-Tag: 1625272113-353587 X-Bogosity: Ham, tests=bogofilter, spamicity=0.000000, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: On Wed, Jun 30, 2021 at 6:46 PM Andrew Morton wrote: > > This is the rest of the -mm tree, less 66 patches which are dependent on > things which are (or were recently) in linux-next. I'll trickle that > material over next week. I haven't bisected this yet, but with the current -git I'm getting watchdog: BUG: soft lockup - CPU#41 stuck for 49s! and the common call chain seems to be in flush_tlb_mm_range -> on_each_cpu_cond_mask. Commit e058a84bfddc42ba356a2316f2cf1141974625c9 is good, and looking at the pulls and merges I've done since, this -mm series looks like the obvious culprit. I'll go start bisection, but I thought I'd give a heads-up in case somebody else has seen TLB-flush-related lockups and already figured out the guilty party.. Linus