From nobody Fri Dec 6 16:38:38 2024 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 4Y4cQQ5JRBz5gWjs for ; Fri, 06 Dec 2024 16:38:38 +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 "R10" (verified OK)) by mx1.freebsd.org (Postfix) with ESMTPS id 4Y4cQQ39x7z4Syj for ; Fri, 6 Dec 2024 16:38:38 +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=1733503118; 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=xoHk+1ymNUwkHZW3anwMbbtSBPVneGbUDs5Nk2zOjX8=; b=WSnTVXwDXbvgciCwzz90n03ph85qC4i9NG35oxhwvGwX98sBc5eJv/3S5xPEzGVvySsMr5 lPimZIzsOOJfXTgFONAJ2TESGCr8tSwqaTqr5NcymBiRIbbeUyFLW+7W3iFwlmF7xKtzE+ l1DQM/xVqK8ig7nUGWu1GHvziabiuTuTnSkHbygb3XVy0mbJSHXXedaf6gGEdgPiRg4fhX QldzG/eYa8Pn27a5DSfSq1gVgqb37B5cAZf5XSodLUNuUKcftHvqc+UHVgLVMPPKaPqooV dHfWZOhz38m/jC32+H6JT6T9JA2hYaOYOY7AS+QSge733OULk+ljj3CC2o8YVw== ARC-Authentication-Results: i=1; mx1.freebsd.org; none ARC-Seal: i=1; s=dkim; d=freebsd.org; t=1733503118; a=rsa-sha256; cv=none; b=f1EOvZu5DlmXSmSQwySDIKCAy8ckORcJ5iLh2vJRShjRf9ZOFFUc6akzFIQ4Mnf1uKhFzQ nFSqof4SFdkIrIgDkxwPaWsdLolFhWjvGgpSz8n1G3GbBwiORyy7XJ94C14tVe3bsiI5gO anh1mfugtzL5yFUT4Wcl6JnWsIDD4RxXz5BlmTk/dPMjhsMv5lLle800AO3PJ1tlaPFHjc yWlHDukbDmWITsIJ0CS7vV0DViI+Hhb6IEaiAwGgLaDu+NmEsYVyYfEDlj5P99PwsGMkGR Uvua9iLILDm0k0F60aCtm8StCToEHaGMHhr6ENX9Ioqu6fc09XFSp7o+ORSLuw== 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 4Y4cQQ2nnczlp8 for ; Fri, 6 Dec 2024 16:38:38 +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 4B6Gccmn056444 for ; Fri, 6 Dec 2024 16:38:38 GMT (envelope-from bugzilla-noreply@freebsd.org) Received: (from www@localhost) by kenobi.freebsd.org (8.15.2/8.15.2/Submit) id 4B6GccXN056443 for bugs@FreeBSD.org; Fri, 6 Dec 2024 16:38:38 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 283159] crash dump backtraces broken on arm64 Date: Fri, 06 Dec 2024 16:38:38 +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: 15.0-CURRENT X-Bugzilla-Keywords: regression X-Bugzilla-Severity: Affects Only Me X-Bugzilla-Who: jhb@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=3D283159 --- Comment #2 from John Baldwin --- Nothing has changed in unwinding for kgdb in a long while, and the only fra= me unwinding that is custom in kgdb is for exception frames. Unwinding out of doadump() is a "normal" frame just like a userspace frame and should be usi= ng DWARF unwind info. The most likely regression here is an issue with the DW= ARF. Oh, is this with PAC? The PC value looks like the upper N bits are "wrong": #0 0xffff0000004b5aa8 in doadump (textdump=3D1) at /usr/home/trasz/git/freebsd/sys/kern/kern_shutdown.c:404 #1 0x67fd0000004b5868 in ?? () The real PC for frame 1 probably starts with 'ffff' instead of '67fd'. As a workaround you can disable PAC for now (not sure if that's a thing you can = do currently). I'll try to see if I can reproduce. --=20 You are receiving this mail because: You are the assignee for the bug.=