From mboxrd@z Thu Jan 1 00:00:00 1970 From: Juergen Gross Subject: Re: pvgrub "Error 9: Unknown boot failure" booting Debian Jessie kernel (Was: Re: [PATCH v5 6/9] libxc: create unmapped initrd in domain builder if supported) Date: Mon, 30 Nov 2015 17:15:45 +0100 Message-ID: <565C7631.4000505@suse.com> References: <1447335816-31772-1-git-send-email-jgross@suse.com> <1447335816-31772-7-git-send-email-jgross@suse.com> <5655DDDC.5000005@oracle.com> <5656B626.6080305@suse.com> <20151130102002.GF21588@citrix.com> <565C23A6.4080707@suse.com> <1448879699.15768.14.camel@citrix.com> <565C2946.60109@suse.com> <1448880697.15768.17.camel@citrix.com> <1448880756.15768.18.camel@citrix.com> <565C2D10.9060203@suse.com> <1448882606.15768.21.camel@citrix.com> <565C3EFD.40208@suse.com> <1448886931.15768.31.camel@citrix.com> <565C483B.1080908@suse.com> <1448889417.15768.36.camel@citrix.com> <1448890911.15768.39.camel@citrix.com> Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Return-path: In-Reply-To: <1448890911.15768.39.camel@citrix.com> List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Sender: xen-devel-bounces@lists.xen.org Errors-To: xen-devel-bounces@lists.xen.org To: Ian Campbell , Wei Liu Cc: Boris Ostrovsky , xen-devel@lists.xen.org, ian.jackson@eu.citrix.com, stefano.stabellini@eu.citrix.com, roger.pau@citrix.com List-Id: xen-devel@lists.xenproject.org On 30/11/15 14:41, Ian Campbell wrote: > On Mon, 2015-11-30 at 13:16 +0000, Ian Campbell wrote: >> On Mon, 2015-11-30 at 13:59 +0100, Juergen Gross wrote: >>> On 30/11/15 13:35, Ian Campbell wrote: >>>> FYI attempting to upgrade osstest to use Debian Jessie in the guest >>>> seems >>>> to have exposed another issue here. >>>> >>>> http://logs.test-lab.xenproject.org/osstest/logs/65172/test-amd64-amd >>>> 64-amd64-pvgrub/info.html >>>> >>>> Booting 'Debian GNU/Linux, kernel 3.16.0-4-amd64' >>>> >>>> root (hd0,0) >>>> Filesystem type is ext2fs, partition type 0x83 >>>> kernel /boot/vmlinuz-3.16.0-4-amd64 root=UUID=12447529-e85a- >>>> 4b41-86b6-3e83ccfc >>>> 1377 ro >>>> initrd /boot/initrd.img-3.16.0-4-amd64 >>>> >>>> ============= Init TPM Front ================ >>>> Tpmfront:Error Unable to read device/vtpm/0/backend-id during >>>> tpmfront initialization! error = ENOENT >>>> Tpmfront:Info Shutting down tpmfront >>>> pin_table(x) returned 1357193 >>>> close(3) >>>> >>>> Error 9: Unknown boot failure >>>> >>>> Press any key to continue... >>>> >>>> xen.git 6853c9bf9ff0 is OK, whereas 713b7e4ef2aa is not. Adding your >>>> two >>>> outstanding patches: >>>> libxc: correct domain builder for 64 bit guest with 32 bit tools >>>> libxc: use correct return type for do_memory_op() >>>> >>>> Doesn't appear to have helped. Anyway, I was in the process of >>>> investigating/bisecting etc but since I was mailing you any way I >>>> thought >>>> I'd mention it. I'll start a fresh thread once I have some more to go >>>> on. >>> >>> When something was wrong with pvgrub in my tests of the patches it died >>> right away and didn't show random errors later. I don't think the >>> problem you are seeing is related to my recent changes. OTOH I have >>> been >>> wrong before. :-( >> >> Bisection has blamed 06954411ee14 "xen: add generic flag to elf_dom_parms >> indicating support of unmapped initrd" which I'm struggling to explain >> right now... > > And trying again it has blamed ea7c8a3d0e82 "libxc: reorganize domain > builder guest memory allocator" which is far more likely. > > I double checked clean rebuilds twice this time and ea7c8a3d0e82 is bad > while 6853c9bf9ff0 "MINIOS_UPSTREAM_REVISION Update" is good. > > Now, the question is why... Indeed. I can't spot anything wrong with that patch. I could imagine the change is triggering an issue which has been present in pvgrub before but didn't show up. I'll try to trigger it on my machine and see if I can get some more debug information. Juergen