From nobody Sun Nov 21 18:00:04 2021 X-Original-To: testing@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 EB180188CBBF for ; Sun, 21 Nov 2021 18:00:03 +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 4Hxyq76FYRz4sZg for ; Sun, 21 Nov 2021 18:00:03 +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 B72E513ACC for ; Sun, 21 Nov 2021 18:00:03 +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 1ALI034J068336 for ; Sun, 21 Nov 2021 18:00:03 GMT (envelope-from bugzilla-noreply@freebsd.org) Received: (from bugzilla@localhost) by kenobi.freebsd.org (8.15.2/8.15.2/Submit) id 1ALI03dq068335 for testing@FreeBSD.org; Sun, 21 Nov 2021 18:00:03 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: testing@FreeBSD.org Subject: [Bug 259970] sys.kern.coredump_phnum_test.coredump_phnum fails with ASLR on by default Date: Sun, 21 Nov 2021 18:00:04 +0000 X-Bugzilla-Reason: AssignedTo X-Bugzilla-Type: changed X-Bugzilla-Watch-Reason: None X-Bugzilla-Product: Base System X-Bugzilla-Component: tests X-Bugzilla-Version: CURRENT X-Bugzilla-Keywords: X-Bugzilla-Severity: Affects Only Me X-Bugzilla-Who: commit-hook@FreeBSD.org X-Bugzilla-Status: New X-Bugzilla-Resolution: X-Bugzilla-Priority: --- X-Bugzilla-Assigned-To: testing@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: Testing List-Archive: https://lists.freebsd.org/archives/freebsd-testing List-Help: List-Post: List-Subscribe: List-Unsubscribe: Sender: owner-freebsd-testing@freebsd.org X-BeenThere: freebsd-testing@freebsd.org MIME-Version: 1.0 X-ThisMailContainsUnwantedMimeParts: N https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=3D259970 --- Comment #2 from commit-hook@FreeBSD.org --- A commit in branch main references this bug: URL: https://cgit.FreeBSD.org/src/commit/?id=3D8ec4c5dae32765701ac70811455084efd= 1570c32 commit 8ec4c5dae32765701ac70811455084efd1570c32 Author: Ed Maste AuthorDate: 2021-11-21 17:17:20 +0000 Commit: Ed Maste CommitDate: 2021-11-21 17:57:38 +0000 Fix coredump_phnum test with ASLR enabled by default coredump_phnum intends to generate a core file with many PT_LOAD segments. Previously it called mmap() in a loop with alternating protections, relying on each mapping following the previous, to produce a core file with many page-sized PT_LOAD segments. With ASLR on we no longer have this property of each mmap() following the previous. Instead, perform a single allocation, and then use mprotect() to set alternating pages to PROT_READ. PR: 259970 Reported by: lwhsu, mw Reviewed by: kib MFC after: 1 week Sponsored by: The FreeBSD Foundation Differential Revision: https://reviews.freebsd.org/D33070 tests/sys/kern/coredump_phnum_helper.c | 21 ++++++++++++--------- 1 file changed, 12 insertions(+), 9 deletions(-) --=20 You are receiving this mail because: You are the assignee for the bug.=