From nobody Tue Oct 24 13:39:23 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 4SFCpN3fy5z4y3qR for ; Tue, 24 Oct 2023 13:39:24 +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 4SFCpM6tsjz4ddH for ; Tue, 24 Oct 2023 13:39:23 +0000 (UTC) (envelope-from bugzilla-noreply@freebsd.org) ARC-Seal: i=1; s=dkim; d=freebsd.org; t=1698154764; a=rsa-sha256; cv=none; b=Q+1yDiczOk80yr0eLC/hTIziACfwi7h5m0pE27zwuKvlHAVK0Ew5Du2hrbpV0au6ARqw1J McG8dMkVM33sMibDEXJLUa8Z8g0mCGZQRpBwP0UZa/gQWd5B8YaEkFfvpOOEOZC882QAV4 4CdZaUhZe6ZCsafLU+KxoUtjkeoA8FZd0NGfTjsh5duRfuAdxypGeMf9T/+9+/EKCLKoQF 8e7EymEOrHTZKz/EPMqLHO7V19fsD9xi9y4iWJVJBWJtoftI6ic2hD6LIXJjforOMSUzLF YTeTnswj6DpcYB7LBhA92BMnTP5ag1XcUWQNJGN6V0S3v38uT/4D0fzpMxapTg== 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=1698154764; 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=11XVIAVHNeT6xZrLbc49wqojd5RySghfl4TmXtj6I0g=; b=oqEpv+7cD9HCPgpir8Jc/nNu6m3aFXPsgLLQqABbtDn+PtKpydQCKIb81H3ytAP9mmVHDL pQQvjsr2ZyYtwC49KWx6bDJ5HkBqBe/imEZ9i4Af28OZH3nwKbk+rchOUaoWhebOc8VpdP BPGb2dj5+G01d4tyRBJqZUBvEFVYlLhQ53GF0/3Sjq8LIoz8NbJbYOZCut88ZH+25KdyXs 83FAubVgxGtx5EEUzoPZvZCrPhi4ITQbpKrblLPqaI3giUokkA+mQbu/WCF+ULmicGOvC8 TurdNeNvOeIqSzWME3LRr4FLJmni7dWeVHDHKeEfLLHsQhsYQwjDuTVzWlGkRQ== 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 4SFCpM5dCvz9Z1 for ; Tue, 24 Oct 2023 13:39:23 +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 39ODdN8t036028 for ; Tue, 24 Oct 2023 13:39:23 GMT (envelope-from bugzilla-noreply@freebsd.org) Received: (from bugzilla@localhost) by kenobi.freebsd.org (8.15.2/8.15.2/Submit) id 39ODdNB3036027 for bugs@FreeBSD.org; Tue, 24 Oct 2023 13:39:23 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, 24 Oct 2023 13:39:23 +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 #7 from commit-hook@FreeBSD.org --- A commit in branch stable/14 references this bug: URL: https://cgit.FreeBSD.org/src/commit/?id=3D4862eb8604d503b52e7c3aa7ff32155b7= 5a1ff93 commit 4862eb8604d503b52e7c3aa7ff32155b75a1ff93 Author: Mark Johnston AuthorDate: 2023-10-17 14:26:18 +0000 Commit: Mark Johnston CommitDate: 2023-10-24 13:20:01 +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 (cherry picked from commit 6223d0b67af923f53d962a9bf594dc37004dffe8) 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.=