From nobody Tue May 9 19:05:02 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 4QG6zf6422z49MJf for ; Tue, 9 May 2023 19:05:02 +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 4QG6zf1VKXz4M4n for ; Tue, 9 May 2023 19:05:02 +0000 (UTC) (envelope-from bugzilla-noreply@freebsd.org) ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=freebsd.org; s=dkim; t=1683659102; 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=zX+fMPHy0zMPtJRx6+bxFgGREyn79Jf/sv3OWO8o8xA=; b=GV3xXhkXfTvHGxmsByERWmi9mr2x90tdBYResx7Rd0KY/SAKjq7f9P0njqFztKP8NF5Hi+ bMpKhRPVideJuZN3/ymK3q0jWikp6pC2wJtyxEJyzu73VNBeRINXJaFjohUE6zK03moKsn V2LvluWinlJmE3g+j0hHbNd0vJEv9h8HOV58VhFsdN5qZdBTxxeK/EE6fbXGCLpainvnpT x1Uk8lpjK1YCPvFqHgzUYeV7TBi4zVtOC0Ai1+aifkDpRBtSItan17E9MsAO2yHWy6aynX 2dKgLGyPWDXxC5jLOdUvZ6fESpIMuS5c8SdjHJBdGFKlcPsfTRFtiM3UMy7q8Q== ARC-Authentication-Results: i=1; mx1.freebsd.org; none ARC-Seal: i=1; s=dkim; d=freebsd.org; t=1683659102; a=rsa-sha256; cv=none; b=t5TAQQNG1q2Svk+UUgS30mTFrD8Ey9dzdVGNBFd6eRzs9JPHr9Y3LKtmi4bXbRwEsqNHzA PhEqHxj3R84qhyzM54nu+vSpdOqzhnA2U2btp3y61xJ9NyxJGR3CRkltVuiQ3sj6HCAvox ZPWeQH3Yr8qebG+jhhmC/rN6B7mW3BNCYRUYwQrnzQucOXarrnRXHuFAv5vfB62Q2ZYlyi hf7M0kqrf39v6DzEQZx4akzky9zRaHhOQndDRTwxuNmnS3OT/uVx1nzuZbMJiiXOirjm2m sp6vQmRxij07go3T+7WSzm9CD7jRpRJPJ3PJIU9tozK26nywY2AYXbUxPnLnHw== 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 4QG6zf0b3Fzfcm for ; Tue, 9 May 2023 19:05:02 +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 349J52a1003554 for ; Tue, 9 May 2023 19:05:02 GMT (envelope-from bugzilla-noreply@freebsd.org) Received: (from www@localhost) by kenobi.freebsd.org (8.15.2/8.15.2/Submit) id 349J52u4003553 for bugs@FreeBSD.org; Tue, 9 May 2023 19:05:02 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 271333] kernel panic 13.2-RELEASE Date: Tue, 09 May 2023 19:05:02 +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: X-Bugzilla-Severity: Affects Only Me X-Bugzilla-Who: markj@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: cc bug_status 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 X-ThisMailContainsUnwantedMimeParts: N https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=3D271333 Mark Johnston changed: What |Removed |Added ---------------------------------------------------------------------------- CC| |markj@FreeBSD.org Status|New |Open --- Comment #1 from Mark Johnston --- Looks like a LinuxKPI bug: - i915_vma_coredump contains an array of pages, freed in __i915_gpu_coredump_free() -> cleanup_gt() -> i915_vma_coredump_free() with for (page =3D 0; page < vma->page_count; page++) free_page((unsigned long)vma->pages[page]); - free_page() just calls FreeBSD's kmem_free(). That is, it expects to rec= eive a page mapped into the kernel map. - Looks like those pages are allocated by pool_alloc() in i915_gpu_error.c.= It uses alloc_page() in the LinuxKPI, which just allocates and returns an unma= pped page. pool_alloc() extracts the direct map address. So, i915kms is passing a direct map address to free_page(), which doesn't handle that. Probably free_page() should handle direct-mapped addresses by resolving them to a page and freeing that with linux_free_pages(page, 0). --=20 You are receiving this mail because: You are the assignee for the bug.=