I reported the problem to Xen, and they came up with this patch: https://lists.xenproject.org/archives/html/xen- devel/2018-08/msg02775.html
I recompiled linux-image-4.15.0-33-generic with this patch applied and it now works. As far as I can see there is no working 32-bit Xen PV kernel package in 18.04, so it would be good if this could be remedied. What needs to happen for that? Does the above fix need to reach the upstream kernel and then be considered for backport? -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu. https://bugs.launchpad.net/bugs/1789118 Title: Fails to boot under Xen PV: BUG: unable to handle kernel paging request at edc21fd9 Status in linux package in Ubuntu: Triaged Status in linux source package in Bionic: Triaged Bug description: After the most recent 18.04 32-bit upgrade of linux-image-generic, it now refuses to boot under Xen PV mode: . . . [ 0.114370] clocksource: jiffies: mask: 0xffffffff max_cycles: 0xffffffff, max_idle_ns: 7645041785100000 ns [ 0.114382] futex hash table entries: 256 (order: 2, 16384 bytes) [ 0.114423] pinctrl core: initialized pinctrl subsystem [ 0.134326] RTC time: 165:165:165, date: 165/165/65 [ 0.134442] NET: Registered protocol family 16 [ 0.134457] xen:grant_table: Grant tables using version 1 layout [ 0.134502] Grant table initialized [ 0.134544] audit: initializing netlink subsys (disabled) [ 0.134611] audit: type=2000 audit(1535307799.132:1): state=initialized audit_enabled=0 res=1 [ 0.134678] EISA bus registered [ 0.136019] PCI: setting up Xen PCI frontend stub [ 0.136073] BUG: unable to handle kernel paging request at edc21fd9 [ 0.136084] IP: eisa_bus_probe+0x19/0x36 [ 0.136089] *pdpt = 0000000001ee6027 *pde = 0000000029cc6067 *pte = 0000000000000000 [ 0.136100] Oops: 0000 [#1] SMP [ 0.136105] Modules linked in: [ 0.136111] CPU: 0 PID: 1 Comm: swapper/0 Not tainted 4.15.0-33-generic #36-Ubuntu [ 0.136120] EIP: eisa_bus_probe+0x19/0x36 [ 0.136125] EFLAGS: 00010246 CPU: 0 [ 0.136130] EAX: edc21fd9 EBX: 00000000 ECX: 01e0d000 EDX: 00000200 [ 0.136138] ESI: c1d0d452 EDI: c1dd34a4 EBP: e9c89f24 ESP: e9c89f24 [ 0.136145] DS: 007b ES: 007b FS: 00d8 GS: 00e0 SS: e021 [ 0.136154] CR0: 80050033 CR2: edc21fd9 CR3: 01e10000 CR4: 00042660 [ 0.136166] Call Trace: [ 0.136173] do_one_initcall+0x49/0x174 [ 0.136179] ? parse_args+0x143/0x390 [ 0.136187] ? set_debug_rodata+0x14/0x14 [ 0.136193] kernel_init_freeable+0x149/0x1c5 [ 0.136201] ? rest_init+0xa0/0xa0 [ 0.136207] kernel_init+0xd/0xf0 [ 0.136213] ret_from_fork+0x2e/0x38 [ 0.140000] Code: ff b8 df 43 ae c1 e8 35 1b 88 ff e8 20 12 88 ff c9 c3 3e 8d 74 26 00 55 b9 04 00 00 00 31 d2 b8 d9 ff 0f 00 89 e5 e8 35 8d 35 ff <8b> 10 81 fa 45 49 53 41 75 0a c7 05 a0 76 ed c1 01 00 00 00 e8 [ 0.140000] EIP: eisa_bus_probe+0x19/0x36 SS:ESP: e021:e9c89f24 [ 0.140000] CR2: 00000000edc21fd9 [ 0.140000] ---[ end trace 8c00b3cb7d4f06ba ]--- [ 0.140013] Kernel panic - not syncing: Attempted to kill init! exitcode=0x00000009 This is: [ 0.000000] Linux version 4.15.0-33-generic (buildd@lgw01-amd64-038) (gcc version 7.3.0 (Ubuntu 7.3.0-16ubuntu3)) #36-Ubuntu SMP Wed Aug 15 13:44:35 UTC 2018 (Ubuntu 4.15.0-33.36-generic 4.15.18) Switching to a 64-bit kernel allows boot to proceed. I cannot include output of the commands you request (uname, version_signature, dmesg, lspci) because the guest doesn't boot. The above kernel output is from a just-installed clean guest however. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1789118/+subscriptions -- Mailing list: https://launchpad.net/~kernel-packages Post to : kernel-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~kernel-packages More help : https://help.launchpad.net/ListHelp
