Date: Sun, 6 Mar 2016 08:20:32 -0600 From: Larry Rosenman <ler@lerctr.org> To: Dimitry Andric <dim@FreeBSD.org> Cc: FreeBSD CURRENT <freebsd-current@freebsd.org> Subject: Re: HEADS UP: clang/llvm/lldb/compiler-rt 3.8.0 imported Message-ID: <20160306142032.GA4063@trivet.lerctr.org> In-Reply-To: <232E493E-9B22-4D1E-A1C8-619B573C56E1@FreeBSD.org> References: <06A7CAA8-1F51-4A86-97D1-F0DA938C2BC4@FreeBSD.org> <0CAC6D2A-D16B-4BD5-90F0-3A1E2F1FC375@FreeBSD.org> <613F619A-DE9E-4030-BF11-CE30465B9538@FreeBSD.org> <da31cf727bd0e074addc5e8a247ec784@thebighonker.lerctr.org> <232E493E-9B22-4D1E-A1C8-619B573C56E1@FreeBSD.org>
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On Sun, Mar 06, 2016 at 03:15:10PM +0100, Dimitry Andric wrote: > On 06 Mar 2016, at 06:20, Larry Rosenman <ler@lerctr.org> wrote: > > > > On 2016-03-05 18:46, Dimitry Andric wrote: > >> On 06 Mar 2016, at 00:30, Dimitry Andric <dim@FreeBSD.org> wrote: > >>> On 05 Mar 2016, at 22:32, Dimitry Andric <dim@FreeBSD.org> wrote: > >>>> I imported the (tentative) 3.8.0 release of clang, llvm, lldb and > >>>> compiler-rt into head, in r296417. The upstream release is going to be > >>>> very soon now, but I do not expect any changes anymore. > >>>> This was tested with make universe, and a few exp-runs, but there is > >>>> always a chance that you might run into something unexpected, either > >>>> with the base system or ports. In such cases, please file bugs, and > >>>> make sure you note somewhere in the description that it is related to > >>>> this import. > >>> Please hold off upgrading for now, if you are on amd64, and loading the > >>> aesni.ko module. It appears that loading this module can cause the > >>> kernel ELF linker to panic, but it is not yet clear why. This is being > >>> tracked in PR207729 [1]. > >> It should be safe again after r296419. Thanks to Kostik Belousov for > >> the quick fix. (Clang 3.8.0 generates a different type for unwind > >> sections on amd64, and this was unexpected in the kernel linker.) > >> -Dimitry > >> [1] https://svnweb.freebsd.org/changeset/base/296419 > > I'm getting a crash at startup (mi_startup) with a clang 3.8.0 kernel. > > > > Picture at: > > http://www.lerctr.org/~ler/FreeBSD/20160305_225532.jpg > > It's pretty hard to make out, but it looks like it is panic'ing in > link_elf_reloc_local(). That should have been fixed with r296419, but > maybe there is yet another edge case that wasn't fixed. Do you have a > crash dump and/or a backtrace? Which modules are you preloading? > > -Dimitry > loader,conf: kern.msgbuf_clear="1" kern.geom.label.disk_ident.enable="0" kern.geom.label.gptid.enable="0" zfs_load="YES" ichsmb_load="YES" hwpmc_load="YES" aesni_load="YES" cryptodev_load="YES" dtraceall_load="YES" cpuctl_load="YES" cuse_load="YES" coretemp_load="YES" #hw.usb.quirk.0="0x0bda 0x0129 0x3960 0x3960 UQ_MSC_FORCE_WIRE_BBB,UQ_MSC_FORCE_PROTO_SCSI" #hw.usb.umass.debug="-1" I'll see if I can get a better pic with a backtrace. This crash is WAY early, so no dump :( acpi_dsdt_load="YES" # DSDT Overriding acpi_dsdt_name="/boot/dsdt.aml" #hw.psm.synaptics_support="1" -- Larry Rosenman http://www.lerctr.org/~ler Phone: +1 214-642-9640 E-Mail: ler@lerctr.org US Mail: 7011 W Parmer Ln, Apt 1115, Austin, TX 78729-6961
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