From nobody Fri Jan 21 12:57:22 2022 X-Original-To: bugs@mlmmj.nyi.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2610:1c1:1:606c::19:1]) by mlmmj.nyi.freebsd.org (Postfix) with ESMTP id 1F2831959971 for ; Fri, 21 Jan 2022 12:57:23 +0000 (UTC) (envelope-from bugzilla-noreply@freebsd.org) Received: from mxrelay.nyi.freebsd.org (mxrelay.nyi.freebsd.org [IPv6:2610:1c1:1:606c::19:3]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (4096 bits) server-digest SHA256 client-signature RSA-PSS (4096 bits) client-digest SHA256) (Client CN "mxrelay.nyi.freebsd.org", Issuer "R3" (verified OK)) by mx1.freebsd.org (Postfix) with ESMTPS id 4JgKCk5sxWz4gyN for ; Fri, 21 Jan 2022 12:57:22 +0000 (UTC) (envelope-from bugzilla-noreply@freebsd.org) Received: from kenobi.freebsd.org (kenobi.freebsd.org [IPv6:2610:1c1:1:606c::50:1d]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (4096 bits) server-digest SHA256) (Client did not present a certificate) by mxrelay.nyi.freebsd.org (Postfix) with ESMTPS id A5FCF1BF7C for ; Fri, 21 Jan 2022 12:57:22 +0000 (UTC) (envelope-from bugzilla-noreply@freebsd.org) Received: from kenobi.freebsd.org ([127.0.1.5]) by kenobi.freebsd.org (8.15.2/8.15.2) with ESMTP id 20LCvMWr045914 for ; Fri, 21 Jan 2022 12:57:22 GMT (envelope-from bugzilla-noreply@freebsd.org) Received: (from www@localhost) by kenobi.freebsd.org (8.15.2/8.15.2/Submit) id 20LCvMWw045913 for bugs@FreeBSD.org; Fri, 21 Jan 2022 12:57:22 GMT (envelope-from bugzilla-noreply@freebsd.org) X-Authentication-Warning: kenobi.freebsd.org: www set sender to bugzilla-noreply@freebsd.org using -f From: bugzilla-noreply@freebsd.org To: bugs@FreeBSD.org Subject: [Bug 261338] [PATCH] kernel panic "bad pte" under heavy CPU load on 12.2 and 12.3 (i386) Date: Fri, 21 Jan 2022 12:57:22 +0000 X-Bugzilla-Reason: AssignedTo X-Bugzilla-Type: changed X-Bugzilla-Watch-Reason: None X-Bugzilla-Product: Base System X-Bugzilla-Component: kern X-Bugzilla-Version: 12.3-RELEASE X-Bugzilla-Keywords: panic, patch X-Bugzilla-Severity: Affects Some People X-Bugzilla-Who: Richard@FrewinIT.uk X-Bugzilla-Status: Open X-Bugzilla-Resolution: X-Bugzilla-Priority: --- X-Bugzilla-Assigned-To: bugs@FreeBSD.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://bugs.freebsd.org/bugzilla/ Auto-Submitted: auto-generated List-Id: Bug reports List-Archive: https://lists.freebsd.org/archives/freebsd-bugs List-Help: List-Post: List-Subscribe: List-Unsubscribe: Sender: owner-freebsd-bugs@freebsd.org MIME-Version: 1.0 ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=freebsd.org; s=dkim; t=1642769842; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=joHusNvS8RrvvIrn2QXTInFfgW9+ceIS/fafYs4fRAQ=; b=LntEBvmuHHpwehWmH3mU38aiI/BR3dEg6uCP8jdJ/3IICA8fGPSJiyP6sn5BxVULx1DVL0 MDJRMDVuwvyzehrgvJHiqh99sNpdJHfbyileObcwEVrGMdJqxlCcY/hknS91gmE6VHlRWQ 0HS5K4dTRB30ESsbXeDXYOefOlFQXLcNK1VcLZ4sQbxsNCbZqIC4quF9NwDoLDH7NKwYbH kDfoauNFmctH3FgLMmOe8Fid5kgZ2Hk2eK7Dwpay/j01Ey9zmNZKfqs4jJ9PHFTrk7dH8S MmfjUL29mhyCr4hHL+CvgZhVtQUB1Ktjeo9GPzBEm6c0hW55IZ5e6dbpzhXOmw== ARC-Seal: i=1; s=dkim; d=freebsd.org; t=1642769842; a=rsa-sha256; cv=none; b=CYSlvFW9opxCzJoF3AXFEp1L6gBUZhXRGOUtqIHnH9Rh1RwULr49ahTeRVHKNYc/gcTQNV vMkKSIgV3t8VFm5zbBSEUMejL+Cy9GBe/DanQ3qZejZLH1LL4OfJ6DhJPRMeT3/pqR9/JV lNBZ/waec3C313hvt3p/+s0YdMKT0N00MYBf9jE//PqK56mHveM9nDEp4135Crn0JYfjI8 9wIsxXUup9mna+bTq5HWvte+7eTXi/y3rFbt3ilmF8EHeLehLom74hrWl3dweairR4Yat8 pLssMgrx0UP9HaLST5C8bTgg7OosNTWM0fdTgU5AJR6oYJ9TseNO2zAitoFZ3Q== ARC-Authentication-Results: i=1; mx1.freebsd.org; none X-ThisMailContainsUnwantedMimeParts: N https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=3D261338 --- Comment #19 from Richard Frewin --- I installed a VirtualBox VM from 12.2 i386 ISO and used freebsd-update to update to 12.2-p12. At this point I tried to recreate problem but could not get it to panic as I'm seeing on bare-metal systems. Then built a custom kernel with the patch in Attachment 231174. By the way, that applied with "Hunk #1 succeeded at 1663 (offset -6 lines)." I've copied the resultant /boot/kernel to a production system and after a reboot (caused by another panic) it's now running the patched kernel. Init= ial tests suggest it's fixed the issue, as it didn't panic during a couple of forced backups. --=20 You are receiving this mail because: You are the assignee for the bug.=