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 A0AA22701B6 for ; Sun, 7 Dec 2025 13:04:43 +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=1765112683; cv=none; b=hqNvZIb97k6JWOjCzuNgvyepbbWqPovhwvFHkrLQnPKQFsag34R0UuQtk0M05b3O8hhPLi3Tqi7HUlceFegeI/dYaBv+u9c6/oW3STT6hP5hk2Kjrc5kVP8g7AZvNvejSoJc2R+bphGqXhaSJtlPdT4SEaXB6Gjgj8q6RLvYo+M= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1765112683; c=relaxed/simple; bh=suZ5RP7nk4iFu1RkIe8IPKnlQIupdZBccdvK43dhMo0=; h=From:To:Subject:Date:Message-ID:In-Reply-To:References: Content-Type:MIME-Version; b=JBqarx9hKEsK85Urp+4RsfE7f7dcC/r0Fzebb3DerBOzV5Kqatpr+9LpmexMlbxmTQ5JRXJ5J/LnH6OvGbEM/kBn4MCU0ksvA24+HLiK5nyRYYEnicnD3DImadslqlBAR8NwgTNCfqgVHP0TPJBaDH7Y7SHhnAnmyTvWaEm5LFQ= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=EKF9smBa; 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="EKF9smBa" Received: by smtp.kernel.org (Postfix) with ESMTPS id 2F25CC4CEFB for ; Sun, 7 Dec 2025 13:04:43 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1765112683; bh=suZ5RP7nk4iFu1RkIe8IPKnlQIupdZBccdvK43dhMo0=; h=From:To:Subject:Date:In-Reply-To:References:From; b=EKF9smBaFzvGVdrUtkfi6h/Jrl2Hrxwokj8Xn7pIlZPjmGzyPDtUyn/1BAB+JWuvU WctDktaGcimajW+njxDxOpWqMSvMOJxc7BwMHS5QrxI14frzHzyJWpjYg5G0JiazUu KsmEAZVxQDCHab60mlC5REh5Xsjb/XzHFFfmj1gI0P2ZmJGjuoUjMO5mc8ZQ19waUi BvVBhgaHM5esgN+fwkmiAehQ719OaDsGGS1lB9JW70hlQtLuhsLRUEwLnQXwBd1ImR 6xfk1sTvaOHz5ub9AhZ1+OEizbjDX+hhdAId1IVsK8wl/XmFShP+4C+c+5eS2YqaGM fG4s09Iu00xHA== Received: by aws-us-west-2-korg-bugzilla-1.web.codeaurora.org (Postfix, from userid 48) id 2904CC41614; Sun, 7 Dec 2025 13:04:43 +0000 (UTC) From: bugzilla-daemon@kernel.org To: linux-ext4@vger.kernel.org Subject: [Bug 220842] dmesg flooded with ext4 backtraces when underlying USB device chokes Date: Sun, 07 Dec 2025 13:04:42 +0000 X-Bugzilla-Reason: None X-Bugzilla-Type: changed X-Bugzilla-Watch-Reason: AssignedTo fs_ext4@kernel-bugs.osdl.org X-Bugzilla-Product: File System X-Bugzilla-Component: ext4 X-Bugzilla-Version: 2.5 X-Bugzilla-Keywords: X-Bugzilla-Severity: normal X-Bugzilla-Who: tytso@mit.edu X-Bugzilla-Status: NEW X-Bugzilla-Resolution: X-Bugzilla-Priority: P3 X-Bugzilla-Assigned-To: fs_ext4@kernel-bugs.osdl.org X-Bugzilla-Flags: X-Bugzilla-Changed-Fields: Message-ID: In-Reply-To: References: Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable X-Bugzilla-URL: https://bugzilla.kernel.org/ Auto-Submitted: auto-generated Precedence: bulk X-Mailing-List: linux-ext4@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 https://bugzilla.kernel.org/show_bug.cgi?id=3D220842 --- Comment #4 from Theodore Tso (tytso@mit.edu) --- Linux doesn't have a way for the block layer to let the system know that something terrible has happened to a storage device. So whether the cause= is an explosion in the data center, or hard drive head crashing into the spinn= ing magnetic platter at 10,000 RPM, or the user just simply carelessly pulling = out a USB drive, all any file system will see is a whole set of I/O errors. = It's not always this noisy, but in this particular case, you got unlock and it resulted in a whole series of messages to the log. We can try to reduce the noise, but in general, if there are problems with = the underlying storage device --- fix that first. It should be self-evident t= hat if there is a problem with the underlying device, (a) it shouldn't happen, = and (b) data will be lost. --=20 You may reply to this email to add a comment. You are receiving this mail because: You are watching the assignee of the bug.=