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 Received: from kanga.kvack.org (kanga.kvack.org [205.233.56.17]) (using TLSv1 with cipher DHE-RSA-AES256-SHA (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id EAFACC43458 for ; Mon, 6 Jul 2026 06:21:54 +0000 (UTC) Received: by kanga.kvack.org (Postfix) id 5FA9F6B00EF; Mon, 6 Jul 2026 02:21:01 -0400 (EDT) Received: by kanga.kvack.org (Postfix, from userid 40) id 5AB136B00F1; Mon, 6 Jul 2026 02:21:01 -0400 (EDT) X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id 424A96B00F2; Mon, 6 Jul 2026 02:21:01 -0400 (EDT) X-Delivered-To: linux-mm@kvack.org Received: from relay.hostedemail.com (smtprelay0017.hostedemail.com [216.40.44.17]) by kanga.kvack.org (Postfix) with ESMTP id 169E66B00EF for ; Mon, 6 Jul 2026 02:21:01 -0400 (EDT) Received: from smtpin10.hostedemail.com (lb01a-stub [10.200.18.249]) by unirelay01.hostedemail.com (Postfix) with ESMTP id 93B461C1EBA for ; Mon, 6 Jul 2026 06:21:00 +0000 (UTC) X-FDA: 84957353880.10.A27477E Received: from invmail4.hynix.com (exvmail4.skhynix.com [166.125.252.92]) by imf17.hostedemail.com (Postfix) with ESMTP id 73D5340002 for ; Mon, 6 Jul 2026 06:20:58 +0000 (UTC) Authentication-Results: imf17.hostedemail.com; dkim=none; dmarc=pass (policy=none) header.from=sk.com; spf=pass (imf17.hostedemail.com: domain of byungchul@sk.com designates 166.125.252.92 as permitted sender) smtp.mailfrom=byungchul@sk.com ARC-Seal: i=1; a=rsa-sha256; d=hostedemail.com; s=arc-20220608; cv=none; t=1783318859; b=vI03xyQvFy15NAz6H8pKNDz7f1vcUwP4seDi6lzzLo1QmsEI+epVxOPxDrgpRnvp5KEdD3 WB0Py3L/wxM7Dmyz/iy1yzRuK320EgDFPsXaE7FBpT1+MnVavYFv2mVLIkYFEP3JXWrrmR lvM4HfOWqc5K70vTKe5FaKs912aulck= ARC-Authentication-Results: i=1; imf17.hostedemail.com; dkim=none; dmarc=pass (policy=none) header.from=sk.com; spf=pass (imf17.hostedemail.com: domain of byungchul@sk.com designates 166.125.252.92 as permitted sender) smtp.mailfrom=byungchul@sk.com ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=hostedemail.com; s=arc-20220608; t=1783318859; h=from:from:sender:reply-to:subject:subject:date:date: message-id:message-id:to:to:cc:cc:mime-version:content-type: content-transfer-encoding:in-reply-to:in-reply-to: references:references; bh=xBro/pS8XSklZi33ajlqBMARpg6j4+kbGF2NYOwbtjg=; b=MY4YIcm6HHSYtV2SXLD10lMLBqaJQ/6GCsfkkXCP2fNcojbMmQ8H1jdGkNJX8McY2oD86O m7y7Gpkx8hDiDOobJkMsvheEe1YBsTIi/OYEBjTaQqaQNdnoJnLSUtFB6Mgzdo1gTzO1p0 DaS2T1p7ScaWoaf6LTmRJeGXRMBqqcA= X-AuditID: a67dfc5b-c45ff70000001609-2d-6a4b4905bbfc From: Byungchul Park To: linux-kernel@vger.kernel.org Cc: max.byungchul.park@gmail.com, kernel_team@skhynix.com, torvalds@linux-foundation.org, damien.lemoal@opensource.wdc.com, linux-ide@vger.kernel.org, adilger.kernel@dilger.ca, linux-ext4@vger.kernel.org, mingo@redhat.com, peterz@infradead.org, will@kernel.org, tglx@linutronix.de, rostedt@goodmis.org, joel@joelfernandes.org, sashal@kernel.org, daniel.vetter@ffwll.ch, duyuyang@gmail.com, johannes.berg@intel.com, tj@kernel.org, tytso@mit.edu, willy@infradead.org, david@fromorbit.com, amir73il@gmail.com, gregkh@linuxfoundation.org, kernel-team@lge.com, linux-mm@kvack.org, akpm@linux-foundation.org, mhocko@kernel.org, minchan@kernel.org, hannes@cmpxchg.org, vdavydov.dev@gmail.com, sj@kernel.org, jglisse@redhat.com, dennis@kernel.org, cl@linux.com, penberg@kernel.org, rientjes@google.com, vbabka@suse.cz, ngupta@vflare.org, linux-block@vger.kernel.org, josef@toxicpanda.com, linux-fsdevel@vger.kernel.org, jack@suse.cz, jlayton@kernel.org, dan.j.williams@intel.com, hch@infradead.org, djwong@kernel.org, dri-devel@lists.freedesktop.org, rodrigosiqueiramelo@gmail.com, melissa.srw@gmail.com, hamohammed.sa@gmail.com, harry.yoo@oracle.com, chris.p.wilson@intel.com, gwan-gyeong.mun@intel.com, boqun.feng@gmail.com, longman@redhat.com, yunseong.kim@ericsson.com, ysk@kzalloc.com, yeoreum.yun@arm.com, netdev@vger.kernel.org, matthew.brost@intel.com, her0gyugyu@gmail.com, corbet@lwn.net, catalin.marinas@arm.com, bp@alien8.de, x86@kernel.org, hpa@zytor.com, luto@kernel.org, sumit.semwal@linaro.org, gustavo@padovan.org, christian.koenig@amd.com, andi.shyti@kernel.org, arnd@arndb.de, lorenzo.stoakes@oracle.com, Liam.Howlett@oracle.com, rppt@kernel.org, surenb@google.com, mcgrof@kernel.org, petr.pavlu@suse.com, da.gomez@kernel.org, samitolvanen@google.com, paulmck@kernel.org, frederic@kernel.org, neeraj.upadhyay@kernel.org, joelagnelf@nvidia.com, josh@joshtriplett.org, urezki@gmail.com, mathieu.desnoyers@efficios.com, jiangshanlai@gmail.com, qiang.zhang@linux.dev, juri.lelli@redhat.com, vincent.guittot@linaro.org, dietmar.eggemann@arm.com, bsegall@google.com, mgorman@suse.de, vschneid@redhat.com, chuck.lever@oracle.com, neil@brown.name, okorniev@redhat.com, Dai.Ngo@oracle.com, tom@talpey.com, trondmy@kernel.org, anna@kernel.org, kees@kernel.org, bigeasy@linutronix.de, clrkwllms@kernel.org, mark.rutland@arm.com, ada.coupriediaz@arm.com, kristina.martsenko@arm.com, wangkefeng.wang@huawei.com, broonie@kernel.org, kevin.brodsky@arm.com, dwmw@amazon.co.uk, shakeel.butt@linux.dev, ast@kernel.org, ziy@nvidia.com, yuzhao@google.com, baolin.wang@linux.alibaba.com, usamaarif642@gmail.com, joel.granados@kernel.org, richard.weiyang@gmail.com, geert+renesas@glider.be, tim.c.chen@linux.intel.com, linux@treblig.org, alexander.shishkin@linux.intel.com, lillian@star-ark.net, chenhuacai@kernel.org, francesco@valla.it, guoweikang.kernel@gmail.com, link@vivo.com, jpoimboe@kernel.org, masahiroy@kernel.org, brauner@kernel.org, thomas.weissschuh@linutronix.de, oleg@redhat.com, mjguzik@gmail.com, andrii@kernel.org, wangfushuai@baidu.com, linux-doc@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-media@vger.kernel.org, linaro-mm-sig@lists.linaro.org, linux-i2c@vger.kernel.org, linux-arch@vger.kernel.org, linux-modules@vger.kernel.org, rcu@vger.kernel.org, linux-nfs@vger.kernel.org, linux-rt-devel@lists.linux.dev, 2407018371@qq.com, dakr@kernel.org, miguel.ojeda.sandonis@gmail.com, neilb@ownmail.net, bagasdotme@gmail.com, wsa+renesas@sang-engineering.com, dave.hansen@intel.com, geert@linux-m68k.org, ojeda@kernel.org, alex.gaynor@gmail.com, gary@garyguo.net, bjorn3_gh@protonmail.com, lossin@kernel.org, a.hindborg@kernel.org, aliceryhl@google.com, tmgross@umich.edu, rust-for-linux@vger.kernel.org Subject: [PATCH v19 33/40] dept: call dept_hardirqs_off() in local_irq_*() regardless of irq state Date: Mon, 6 Jul 2026 15:19:21 +0900 Message-Id: <20260706061928.66713-34-byungchul@sk.com> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20260706061928.66713-1-byungchul@sk.com> References: <20260706061928.66713-1-byungchul@sk.com> X-Brightmail-Tracker: H4sIAAAAAAAAAzWSa0xTdxjG/Z87nZWTasYRs2BqcNpFFEHzxrnNffJ4y0yW7MMWo904Slmh TatcTAytihEHUru0BgoEYUOk5RKKFzpRrFAE2tACYlVAqq6MYMWoZZuUsML0y5snz/O8v08P g0uGyXhGkXVU0GTJlVJKRIhCSy9tYHbtydgUsLNwtiAfhvUdBJQ32SiYs1yn4d6DkwR4G60I /p614GDSI5hvdyEw+4w4XJzUE1AWtNAw2bUT5kcnMJgyv6Jg1tOPQ6trDEF73UkKBp8vg6Hw NAUhXzkGL5sp8LmnEFRYjAiCj9oxOFXTREHbuIMG31QEgxGzEQNryz7oM1RjYLl4CgNTwx8Y uGtGCKjVJYLFM0hCJJAM81UqcFknaBgtMRHQGOonoWdsmISpoJGC67pxGt4OBTA46wgT0PIs GpRWjlDguvEUg0FHOQVFzVdJGLPNk+Dt6CNhwOoloGnCj0Gf6x4BPWVXCHjsKaGh39FAgt3j xmHm/CrwXigmwW/4E0HDy2pqRxpfb7+G8bZKG+ILDNFz98U0zv/e94Li34XvU3xvNcf/VvgO 4y94NvBtZaM0f/rWI5qvajnGn+4Mkby9TsbX3JzE+Euvw+T+5O9F29MEpSJb0Gz88pAo/a/h AlKtj80N2kCHQh+dQzEMx6ZyrbcHsA+6v1VPLGiK/ZTz+//FF/QKdjVnLw6S55CIwdnBBK6o tnixtJz9kTOHxqIlhiHYRK54SL1gi9mtXO01w3tmAmdt7ljkxET9xkjFoi9ht3CPp7uJBSbH Xo7hTPW95P8PK7k7dX7CgMRVaEk9kiiysjPlCmVqUnpeliI36SdVZguKrq32ROSHG+i191sn YhkkXSqGHbszJKQ8W5uX6UQcg0tXiNeu25MhEafJ844LGtVBzTGloHWiVQwhjRNvnslJk7BH 5EeFnwVBLWg+pBgTE69DFWcCsfmxm2Rfd5pK26oSfKXrfBH2WfevPTu7TBZ3ZQ9a82SJk0kJ 9K5RQX78P2y5LnVOJatWqVNUb745MKPccqij8JcjszkfG90O+ulxKvFKUUn21r3jh9VnZPRA 3Of738geblPkGMxfhDMLI7s/62bn8j+5v/6rJ0kJztxk7XdSQpsuT5bhGq38PzJOGWtpAwAA X-Brightmail-Tracker: H4sIAAAAAAAAAzWSe0xScRTH+90XV5K6Ec07bdlYT0urle30WPbmmus129r6p6juEgUzKItW SyCmPWxEgUs0zZI1pTIflDWWs2UPa0n2cOWjB1FOiVZY+UBDW/+cfc/nfM93549D42InGUkr 0vfz6nS5UkoJCeGGJYZYMjEpde4JxxzIMR6D1g4PCa91dQT0BHIIKLjhoCBouyWAnMoLJDx6 oyeg6Xo5go6eHAS/+204GGuHCAiaGwQQ6H0nAIsOwZCrAYHVbcahpekeDo5qHQY/KwYp6Lr/ A4Hlg4eCvE4dAX77aQT5XpsAOh/IwNdxl4Shti8YvPnVjcDuGcTAU5eNIGhNg6KSqtC69TsF /c+e45BnaUJw6UMbDj863yOobmhH4Lqqp+CzqQaHZs8YeNnjp+Cx5RQFPncBBt8qKCjWu0hw P+1CUGgzI/C+dWFguHyDAmthJQG17+8IwN01gEGr1YxBeeV66LB7CWg0lWChc0OumxFgyzNg ofIVA8u1uxj02ssEy0sR99t4huDKqpwYZ3wRpDjHRQfi+vvMiAuUGnDOaAq197v9OHe86iBX 2thNcX09ryjO9auY4J6UsNyVE30Yd/ZZLFeb3ybYtGKbcOluXqnI5NVzlu0Qpnx9bSQzdGMP eR2QhXyjT6IwmmUWsM+rdcSwppjpbEtLLz6sJcxktirXS55EQhpnmqPZ0/bcEdN4Zidr9bWH TDRNMFPZ3JcZw1jELGTtThP2LzOaLa+oG8kJC/HrA4UjXMzEs+/8DwkTEhajUWVIokjPVMkV yvg4TVqKNl1xKG7XXlUlCn2T/ejA2dso0CyrRwyNpOEiWL4uVUzKMzVaVT1iaVwqEU2bkZQq Fu2Waw/z6r3b1QeUvKYeRdGENEK0biu/Q8zske/n03g+g1f/n2J0WGQWulWTrfRLuFFrHdPu zIjJ7t066WPUqnPYlORA8Jg2fO30yT7JlVUDWRPVTnf827hZ81dPiNJGvpiavCjxJlqcXIav UanOxSQcWR3VvuXy5i/hR/cl/BkXiNZr/Pol9bNlO396Z9ZuDPTrGrelnTl/QC4rkh3+HPuA SJj/9NPKmsEVW45ICU2KfF4MrtbI/wIjatboSQMAAA== X-CFilter-Loop: Reflected X-Rspamd-Queue-Id: 73D5340002 X-Rspam-User: X-Stat-Signature: i4wcijxz64d1e6mn1xycn4sf43rc7wn7 X-Rspamd-Server: rspam03 X-HE-Tag: 1783318858-713773 X-HE-Meta: U2FsdGVkX18NR1t3knwjXaVWGl3AfQN/4XiHo2ionDD9i+dA9/13vFsNCaNAOEP4PWkQfochG548YMl10T63hQGpLjgBokBqHFQJr7sFCqe1l/0NI66ipsVPO8bHO4//tjOuoRJZ5EkpvCZDKKFi3PXgKlC72Ab2bEINWs29BC7O6ORpMkaxCHfNw6uxoIWiyBHcZNWz1wn7clyfRse6Hei5JJiVDm7naGPYtIo29jVxC0PcFf2EKJ8UVUPwtfOhKngVSVGSevhUh1dSg6iaCV9D0Ju83q41t4f0MVPdVDGI9eHWUd93JUk/5s0fXMCN5fd8lRgqtM7ZEyu9MRwIVVqXCjO5iGU5E8BuEcXDcvMASn5mUEtKQ4rWeKrREoScw+YQiJ0aPbHsP0EoE99bdamOCaZH/GLiDt4zam9Ak6cQxqYDL0noK4/Py2TwwhkTXqOOGaJtomPXMjy2xho0++8ZCvjGXf8LzvhvhILN/mHdZ+73Jwgfg4PYg6E7yk0ROgOOj6+Yajbx+ht/KC+imQEpOwkmT2sPaBlqiHiBqQtpK03icr/F+hc52qnCHlZD57Sk0AN9tBH9qg1bj4+/5JL7qP3LeUrPcj+h7nq5n5HSAEHxGEtre4e2lw8Lj5uc+RQkECpglrVyHswNiOjaAiwADNb1JT7oO1YzGFZnwOxMDF77uGLPK+TC6YBw7bWcJKfHIhKuk7bH6T9er6qy4cxnXVNgW02BEMcPZfsQukc/o4qZ/I4HAQ3EIxKvVZwx0L7rpEogY0ULOeTA63GkNMiQCC9JHNBxQ/A7cy2qKKqCGk0ACmqZANEEYtkcW+RjuUB0JeMIWg4rL1sLSRIV3DeFr5Z9R0RAMpOG58H0R1X19pMNWGZFYfRngEznFM+szeHAPBJ2Sy5nnIFrgeBa5vcuCg8bjmC/LnBtEqsRIjGwfuSe9gFG2Ula7iJJW/bRb0xDKRX4/gkroUu+HDa DcK2QXqH 1Yk31mhulGOr5wjP6DLrYn144dgbvnFWFwI7GCd9zDnLkzKmXVvNbBwipArTovuXYNePzQ92kRSjt6tE2gnJx9+aWJDYvVugDf+B7CiWoq5gR3FraRqALfavFyWUPv8iuTlATe2ESCaVjjMiRBDE9VN+D4/Dxu3YRpbaHxVMSE20/mRhoEJ29glDocoUUvjGpfrzf2vJzUB+hxFO4h+3zc8jM2A== Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: List-Subscribe: List-Unsubscribe: For dept to function properly, dept_task()->hardirqs_enabled must be set correctly. If it fails to set this value to false, for example, dept may mistakenly think irq is still enabled even when it's not. Do dept_hardirqs_off() regardless of irq state not to miss any unexpected cases by any chance e.g. changes of the state by asm code. Signed-off-by: Byungchul Park --- include/linux/irqflags.h | 14 ++++++++++++++ kernel/dependency/dept.c | 1 + 2 files changed, 15 insertions(+) diff --git a/include/linux/irqflags.h b/include/linux/irqflags.h index d8b9cf093f83..586f5bad4da7 100644 --- a/include/linux/irqflags.h +++ b/include/linux/irqflags.h @@ -214,6 +214,13 @@ extern void warn_bogus_irq_restore(void); raw_local_irq_disable(); \ if (!was_disabled) \ trace_hardirqs_off(); \ + /* \ + * Just in case that C code has missed \ + * trace_hardirqs_off() at the first \ + * place e.g. disabling irq at asm code.\ + */ \ + else \ + dept_hardirqs_off(); \ } while (0) #define local_irq_save(flags) \ @@ -221,6 +228,13 @@ extern void warn_bogus_irq_restore(void); raw_local_irq_save(flags); \ if (!raw_irqs_disabled_flags(flags)) \ trace_hardirqs_off(); \ + /* \ + * Just in case that C code has missed \ + * trace_hardirqs_off() at the first \ + * place e.g. disabling irq at asm code.\ + */ \ + else \ + dept_hardirqs_off(); \ } while (0) #define local_irq_restore(flags) \ diff --git a/kernel/dependency/dept.c b/kernel/dependency/dept.c index 007e1bc7d201..35a3667ac8b3 100644 --- a/kernel/dependency/dept.c +++ b/kernel/dependency/dept.c @@ -2095,6 +2095,7 @@ void noinstr dept_hardirqs_off(void) */ dept_task()->hardirqs_enabled = false; } +EXPORT_SYMBOL_GPL(dept_hardirqs_off); void noinstr dept_update_cxt(void) { -- 2.17.1