From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 334EC3BB54; Tue, 11 Feb 2025 18:35:33 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1739298935; cv=none; b=ZQHKZCxuZ05q5NMIdWr1ZG0eJikrFMYcr/asGWZ3RN3eP0u76F6sKlHIILdJ0J3aSJO4AJ4nOowavaB4w4XFqrm2xPnlGMLN171gIFdQWu1K6A8eGm5lyWmTiX9obHMGY9ddN0jbyS7mWHzfwDBqeIvsTlBmgr4RwuvBxNMTZl8= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1739298935; c=relaxed/simple; bh=/GDgxa2V50tFPQOr9OXJ/5PrkxuGxrhpmwMTgMzj/T0=; h=From:To:Cc:Subject:Date:Message-Id:In-Reply-To:References: MIME-Version; b=Uc1Eo9DIEdZkhEjCJqSXlSC1r59vNi9OeQo5y0fo5OlU4g9pWH+XNEPYevE1uMUsEFxwfFwJpZUKQSioUPBbZTtitqdl+jmXe9I4qWsWj1TKja2HKV5th6xnC5mcoA4PXuW32jeREpVrdVY+99bqY9TkXZN2fQpbC/xNiejMW1s= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=kl+DX5ig; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="kl+DX5ig" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 7A7A7C4CEDD; Tue, 11 Feb 2025 18:35:33 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1739298933; bh=/GDgxa2V50tFPQOr9OXJ/5PrkxuGxrhpmwMTgMzj/T0=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=kl+DX5igmocajTRVwBOsdZaBjIkP6B6H3j2G+72XnR5gu5LDvnJzhET+0Vb1TMSD6 A2JJP0TP1FLV+XAsv0hHXSjSVvmEa9pb6Aq69DOXfje6W4aQvorDhKm+HheB9iwZk0 HuKXXpkcwLgd97YlZP+3rVJgybJj/l5FR2DN9O8+m+fzpo18vRtEJF4U3KODj2pDqk 5Y4+pUbVH2gHNtjDAj9Di2bjvymszhio/t1iBscgngU+cs1w6NolRNEgvJOkRh/XYU fLOI0ULS1WWzZnBE83kphBPURC+LTNVtCov0hoitU4GLBR2kBgB0FgKhKc+Y6s6q+5 vUSGvKMQjmT/A== From: SeongJae Park To: "Arnd Bergmann" Cc: SeongJae Park , "Naresh Kamboju" , "open list" , linux-mm , "Linux PM" , rcu , "LTP List" , "Linux Regressions" , lkft-triage@lists.linaro.org, "Andrew Morton" , "Paul E. McKenney" , "Vincent Guittot" , "Daniel Lezcano" , "Dan Carpenter" , "Anders Roxell" Subject: Re: next-20250210: WARNING: at include/linux/rwsem.h:85 madvise_unlock Date: Tue, 11 Feb 2025 10:35:31 -0800 Message-Id: <20250211183531.4359-1-sj@kernel.org> X-Mailer: git-send-email 2.39.5 In-Reply-To: References: Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit On Tue, 11 Feb 2025 10:32:55 +0100 "Arnd Bergmann" wrote: > On Tue, Feb 11, 2025, at 10:23, Naresh Kamboju wrote: > > Regressions on arm64 Juno-r2 device while running LTP syscalls tests > > madvise01 warnings on the Linux next-20250210 tag. > > > > First seen on next-20250210 > > Good: next-20250207 > > Bad: next-20250210 > > Cc SeongJae Park [...] > This is mmap_write_unlock() triggering > rwsem_assert_held_write(&mm->mmap_lock); > > That code was changed in these commits: > > 415553982a1e mm-madvise-remove-redundant-mmap_lock-operations-from-process_madvise-fix > ec68fbd9e99f mm/madvise: remove redundant mmap_lock operations from process_madvise() > f19c9d7b57cf mm/madvise: split out madvise() behavior execution > a4d5a73cdc14 mm/madvise: split out madvise input validity check > 948a0a9ea070 mm/madvise: split out mmap locking operations for madvise() > > You could try reverting them to see if that fixes it again. Thank you for kindly Cc-ing me and further providing this nice information, Arnd! I posted a fix and continuing discussion there: https://lore.kernel.org/20250211063201.5106-1-sj@kernel.org Thanks, SJ [...]