From nobody Tue Oct 17 15:56:27 2023 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 4S8z9m0jMJz4xgPY for ; Tue, 17 Oct 2023 15:56:28 +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 4S8z9l3511z4GY6 for ; Tue, 17 Oct 2023 15:56:27 +0000 (UTC) (envelope-from bugzilla-noreply@freebsd.org) ARC-Seal: i=1; s=dkim; d=freebsd.org; t=1697558187; a=rsa-sha256; cv=none; b=Qxz7w1Q5L61vLfFiSS/3Kr0Cv5I2/yn/sS+uSq37aEGfWxFU6TQwuseR6PCakU3i4epyUo M238dDyooY1VeavczK93eWsjU1/aUg+q+JvoFm3EOixz8WFe/Iuxg6Qr9rb324+cC+ew9Q qjy+IoXYTc5TA3N+PMzFlU+XI4mzK+c09jAyiOIjLue1GiG93LOTuuoyvaYDbKtPTH+/iT uElR+Yq4CfpJ9OQUrL5afHR17UoWEPCMowoWb48MrOALyXrRYqiQ+Wcq3F0uwxeXC3kiBt FJfmIm0Ipk4LaNCyOBmRMsUZ2P9hoCM/o1fX3Iu7X2mJJKfH9MFGqjG7nB4qDg== ARC-Authentication-Results: i=1; mx1.freebsd.org; none ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=freebsd.org; s=dkim; t=1697558187; 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=F9p3QTIKy+VxGIHMXlReK3rc9OE411cddBi3KS2otCk=; b=l4/YTmdCW6MPd8mftZ48ibtzVuXsC/3WSWRM857adJCBSkGzmFYh4SWWuX1GG6OYV6+vgk U5p4yH8HAViGEDwPh7kUpBgy9RHTYNNCaIXM8e+3VmcEi0NgQTyyVWJ3tkFnTcz6CfgTDr uTi4RWwfgvpz24lz/pASvxAeaNmLtRfZ6lq9eSbMJ8MQcutfibwy6OLf06Zyh8gUG8bskE UPVFqCxM38WezUJL7lvj38Aiov/eEVg40KlcCHou5ybmoDz6w+btFN9Lij4CyyklVbGvbp hviHPifgeFYM6fcZr8WJ2sJK4ydVrevWGpnywUPbzdPcVHwbz8+OLbOVb2J5XQ== 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 4S8z9l0wTVzVnh for ; Tue, 17 Oct 2023 15:56:27 +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 39HFuRAH004062 for ; Tue, 17 Oct 2023 15:56:27 GMT (envelope-from bugzilla-noreply@freebsd.org) Received: (from bugzilla@localhost) by kenobi.freebsd.org (8.15.2/8.15.2/Submit) id 39HFuRTA004061 for bugs@FreeBSD.org; Tue, 17 Oct 2023 15:56:27 GMT (envelope-from bugzilla-noreply@freebsd.org) X-Authentication-Warning: kenobi.freebsd.org: bugzilla set sender to bugzilla-noreply@freebsd.org using -f From: bugzilla-noreply@freebsd.org To: bugs@FreeBSD.org Subject: [Bug 271333] kernel panic 13.2-RELEASE with drmn0: [drm] GPU HANG Date: Tue, 17 Oct 2023 15:56:27 +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: 13.2-RELEASE X-Bugzilla-Keywords: crash X-Bugzilla-Severity: Affects Only Me X-Bugzilla-Who: commit-hook@FreeBSD.org 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 https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=3D271333 --- Comment #6 from commit-hook@FreeBSD.org --- A commit in branch main references this bug: URL: https://cgit.FreeBSD.org/src/commit/?id=3D6223d0b67af923f53d962a9bf594dc370= 04dffe8 commit 6223d0b67af923f53d962a9bf594dc37004dffe8 Author: Mark Johnston AuthorDate: 2023-10-17 14:26:18 +0000 Commit: Mark Johnston CommitDate: 2023-10-17 15:19:06 +0000 linuxkpi: Handle direct-mapped addresses in linux_free_kmem() See the analysis in PR 271333. It is possible for driver code to allocate a page, store its address as returned by page_address(), then call free_page() on that address. On most systems that'll result in the LinuxKPI calling kmem_free() with a direct-mapped address, which is not legal. Fix the problem by making linux_free_kmem() check the address to see whether it's direct-mapped or not, and handling it appropriately. PR: 271333, 274515 Reviewed by: hselasky, bz Tested by: trasz MFC after: 1 week Sponsored by: The FreeBSD Foundation Differential Revision: https://reviews.freebsd.org/D40028 sys/compat/linuxkpi/common/src/linux_page.c | 22 +++++++++++++++++++--- 1 file changed, 19 insertions(+), 3 deletions(-) --=20 You are receiving this mail because: You are the assignee for the bug.=