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* hvc console not working on 4.4.0 guest
@ 2015-12-21 22:57 M A Young
  2015-12-22 10:01 ` David Vrabel
  0 siblings, 1 reply; 2+ messages in thread
From: M A Young @ 2015-12-21 22:57 UTC (permalink / raw)
  To: xen-devel

[-- Attachment #1: Type: TEXT/PLAIN, Size: 619 bytes --]

I am testing Fedora rawhide in a xen pv guest and I get the error
[    9.809550] genirq: Flags mismatch irq 8. 00000000 (hvc_console) vs. 
00000000 (rtc0)
[    9.809714] hvc_open: request_irq failed with rc -16.
during the boot and the hvc console doesn't respond when the boot 
finishes. I have noticed this I think since the update through various 
linux 4.4.0 kernels up to the current 4.4.0-0.rc5.git3.1.fc24.x86_64 one.
I do get an hvc console if I use the Fedora 23 kernel 4.2.6-300.fc23.x86_64
from before the update.
Is this a known problem? I have attached the boot log up to the above 
error. 

	Michael Young

[-- Attachment #2: Type: TEXT/plain, Size: 22765 bytes --]

[    0.000000] x86/PAT: Configuration [0-7]: WB  WT  UC- UC  WC  WP  UC  UC  
[    0.000000] Initializing cgroup subsys cpuset
[    0.000000] Initializing cgroup subsys cpu
[    0.000000] Initializing cgroup subsys cpuacct
[    0.000000] Linux version 4.4.0-0.rc5.git3.1.fc24.x86_64 (mockbuild@bkernel01.phx2.fedoraproject.org) (gcc version 5.3.1 20151207 (Red Hat 5.3.1-2) (GCC) ) #1 SMP Fri Dec 18 16:47:01 UTC 2015
[    0.000000] Command line: root=/dev/mapper/fedora00-root ro rd.lvm.lv=fedora00/swap rd.lvm.lv=fedora00/root rhgb quiet LANG=en_GB.UTF-8
[    0.000000] x86/fpu: Legacy x87 FPU detected.
[    0.000000] x86/fpu: Using 'lazy' FPU context switches.
[    0.000000] ACPI in unprivileged domain disabled
[    0.000000] Released 0 page(s)
[    0.000000] e820: BIOS-provided physical RAM map:
[    0.000000] Xen: [mem 0x0000000000000000-0x000000000009ffff] usable
[    0.000000] Xen: [mem 0x00000000000a0000-0x00000000000fffff] reserved
[    0.000000] Xen: [mem 0x0000000000100000-0x000000003fffffff] usable
[    0.000000] NX (Execute Disable) protection: active
[    0.000000] DMI not present or invalid.
[    0.000000] Hypervisor detected: Xen
[    0.000000] e820: update [mem 0x00000000-0x00000fff] usable ==> reserved
[    0.000000] e820: remove [mem 0x000a0000-0x000fffff] usable
[    0.000000] e820: last_pfn = 0x40000 max_arch_pfn = 0x400000000
[    0.000000] MTRR: Disabled
[    0.000000] Scanning 1 areas for low memory corruption
[    0.000000] Base memory trampoline at [ffff88000009a000] 9a000 size 24576
[    0.000000] BRK [0x03485000, 0x03485fff] PGTABLE
[    0.000000] BRK [0x03486000, 0x03486fff] PGTABLE
[    0.000000] BRK [0x03487000, 0x03487fff] PGTABLE
[    0.000000] BRK [0x03488000, 0x03488fff] PGTABLE
[    0.000000] BRK [0x03489000, 0x03489fff] PGTABLE
[    0.000000] BRK [0x0348a000, 0x0348afff] PGTABLE
[    0.000000] RAMDISK: [mem 0x034ac000-0x0468cfff]
[    0.000000] NUMA turned off
[    0.000000] Faking a node at [mem 0x0000000000000000-0x000000003fffffff]
[    0.000000] NODE_DATA(0) allocated [mem 0x3fe09000-0x3fe2bfff]
[    0.000000] Zone ranges:
[    0.000000]   DMA      [mem 0x0000000000001000-0x0000000000ffffff]
[    0.000000]   DMA32    [mem 0x0000000001000000-0x000000003fffffff]
[    0.000000]   Normal   empty
[    0.000000] Movable zone start for each node
[    0.000000] Early memory node ranges
[    0.000000]   node   0: [mem 0x0000000000001000-0x000000000009ffff]
[    0.000000]   node   0: [mem 0x0000000000100000-0x000000003fffffff]
[    0.000000] Initmem setup node 0 [mem 0x0000000000001000-0x000000003fffffff]
[    0.000000] On node 0 totalpages: 262047
[    0.000000]   DMA zone: 64 pages used for memmap
[    0.000000]   DMA zone: 21 pages reserved
[    0.000000]   DMA zone: 3999 pages, LIFO batch:0
[    0.000000]   DMA32 zone: 4032 pages used for memmap
[    0.000000]   DMA32 zone: 258048 pages, LIFO batch:31
[    0.000000] p2m virtual area at ffffc90000000000, size is 200000
[    0.000000] Remapped 0 page(s)
[    0.000000] SFI: Simple Firmware Interface v0.81 http://simplefirmware.org
[    0.000000] smpboot: Allowing 1 CPUs, 0 hotplug CPUs
[    0.000000] PM: Registered nosave memory: [mem 0x00000000-0x00000fff]
[    0.000000] PM: Registered nosave memory: [mem 0x000a0000-0x000fffff]
[    0.000000] e820: [mem 0x40000000-0xffffffff] available for PCI devices
[    0.000000] Booting paravirtualized kernel on Xen
[    0.000000] Xen version: 4.6.0 (preserve-AD)
[    0.000000] clocksource: refined-jiffies: mask: 0xffffffff max_cycles: 0xffffffff, max_idle_ns: 1910969940391419 ns
[    0.000000] setup_percpu: NR_CPUS:8192 nr_cpumask_bits:1 nr_cpu_ids:1 nr_node_ids:1
[    0.000000] PERCPU: Embedded 483 pages/cpu @ffff88003f800000 s1938008 r8192 d32168 u2097152
[    0.000000] pcpu-alloc: s1938008 r8192 d32168 u2097152 alloc=1*2097152
[    0.000000] pcpu-alloc: [0] 0 
[    0.000000] Built 1 zonelists in Node order, mobility grouping on.  Total pages: 257930
[    0.000000] Policy zone: DMA32
[    0.000000] Kernel command line: root=/dev/mapper/fedora00-root ro rd.lvm.lv=fedora00/swap rd.lvm.lv=fedora00/root rhgb quiet LANG=en_GB.UTF-8
[    0.000000] PID hash table entries: 4096 (order: 3, 32768 bytes)
[    0.000000] Memory: 968988K/1048188K available (8723K kernel code, 1786K rwdata, 3716K rodata, 3772K init, 17464K bss, 79200K reserved, 0K cma-reserved)
[    0.000000] SLUB: HWalign=64, Order=0-3, MinObjects=0, CPUs=1, Nodes=1
[    0.000000] Running RCU self tests
[    0.000000] Hierarchical RCU implementation.
[    0.000000] 	RCU lockdep checking is enabled.
[    0.000000] 	Build-time adjustment of leaf fanout to 64.
[    0.000000] 	RCU restricting CPUs from NR_CPUS=8192 to nr_cpu_ids=1.
[    0.000000] RCU: Adjusting geometry for rcu_fanout_leaf=64, nr_cpu_ids=1
[    0.000000] kmemleak: Kernel memory leak detector disabled
[    0.000000] Using NULL legacy PIC
[    0.000000] NR_IRQS:524544 nr_irqs:32 0
[    0.000000] xen:events: Using FIFO-based ABI
[    0.000000] 	Offload RCU callbacks from all CPUs
[    0.000000] 	Offload RCU callbacks from CPUs: 0.
[    0.000000] Console: colour dummy device 80x25
[    0.000000] console [tty0] enabled
[    0.000000] console [hvc0] enabled
[    0.000000] Lock dependency validator: Copyright (c) 2006 Red Hat, Inc., Ingo Molnar
[    0.000000] ... MAX_LOCKDEP_SUBCLASSES:  8
[    0.000000] ... MAX_LOCK_DEPTH:          48
[    0.000000] ... MAX_LOCKDEP_KEYS:        8191
[    0.000000] ... CLASSHASH_SIZE:          4096
[    0.000000] ... MAX_LOCKDEP_ENTRIES:     32768
[    0.000000] ... MAX_LOCKDEP_CHAINS:      65536
[    0.000000] ... CHAINHASH_SIZE:          32768
[    0.000000]  memory used by lock dependency info: 8671 kB
[    0.000000]  per task-struct memory footprint: 2688 bytes
[    0.000000] clocksource: xen: mask: 0xffffffffffffffff max_cycles: 0x1cd42e4dffb, max_idle_ns: 881590591483 ns
[    0.000000] Xen: using vcpuop timer interface
[    0.000000] installing Xen timer for CPU 0
[    0.000000] tsc: Detected 2394.076 MHz processor
[    0.001000] Calibrating delay loop (skipped), value calculated using timer frequency.. 4788.15 BogoMIPS (lpj=2394076)
[    0.001000] pid_max: default: 32768 minimum: 301
[    0.001000] Security Framework initialized
[    0.001000] Yama: becoming mindful.
[    0.001000] SELinux:  Initializing.
[    0.001000] SELinux:  Starting in permissive mode
[    0.001654] Dentry cache hash table entries: 131072 (order: 8, 1048576 bytes)
[    0.002460] Inode-cache hash table entries: 65536 (order: 7, 524288 bytes)
[    0.002745] Mount-cache hash table entries: 2048 (order: 2, 16384 bytes)
[    0.002760] Mountpoint-cache hash table entries: 2048 (order: 2, 16384 bytes)
[    0.004624] Initializing cgroup subsys io
[    0.004663] Initializing cgroup subsys memory
[    0.004713] Initializing cgroup subsys devices
[    0.004747] Initializing cgroup subsys freezer
[    0.004780] Initializing cgroup subsys net_cls
[    0.004791] Initializing cgroup subsys perf_event
[    0.004802] Initializing cgroup subsys net_prio
[    0.004812] Initializing cgroup subsys hugetlb
[    0.004838] Initializing cgroup subsys pids
[    0.004946] CPU: Physical Processor ID: 0
[    0.004949] CPU: Processor Core ID: 1
[    0.004957] Last level iTLB entries: 4KB 128, 2MB 4, 4MB 4
[    0.004959] Last level dTLB entries: 4KB 256, 2MB 0, 4MB 32, 1GB 0
[    0.036109] Freeing SMP alternatives memory: 28K (ffffffff8236f000 - ffffffff82376000)
[    0.037562] ftrace: allocating 29739 entries in 117 pages
[    0.044813] Could not initialize VPMU for cpu 0, error -95
[    0.045019] Performance Events: unsupported p6 CPU model 23 no PMU driver, software events only.
[    0.048049] x86: Booted up 1 node, 1 CPUs
[    0.048704] NMI watchdog: disabled (cpu0): hardware events not enabled
[    0.048706] NMI watchdog: Shutting down hard lockup detector on all cpus
[    0.049545] devtmpfs: initialized
[    0.056109] clocksource: jiffies: mask: 0xffffffff max_cycles: 0xffffffff, max_idle_ns: 1911260446275000 ns
[    0.056559] atomic64_test: passed for x86-64 platform with CX8 and with SSE
[    0.056565] pinctrl core: initialized pinctrl subsystem
[    0.076625] RTC time: 165:165:165, date: 165/165/65
[    0.077362] NET: Registered protocol family 16
[    0.077506] xen:grant_table: Grant tables using version 1 layout
[    0.077527] Grant table initialized
[    0.080026] PCI: setting up Xen PCI frontend stub
[    0.080029] PCI: pci_cache_line_size set to 64 bytes
[    0.099681] ACPI: Interpreter disabled.
[    0.099748] xen:balloon: Initialising balloon driver
[    0.103269] xen_balloon: Initialising balloon driver
[    0.105308] vgaarb: loaded
[    0.105974] SCSI subsystem initialized
[    0.106384] libata version 3.00 loaded.
[    0.106821] usbcore: registered new interface driver usbfs
[    0.106916] usbcore: registered new interface driver hub
[    0.107035] usbcore: registered new device driver usb
[    0.107473] dmi: Firmware registration failed.
[    0.107754] PCI: System does not support PCI
[    0.107757] PCI: System does not support PCI
[    0.109137] NetLabel: Initializing
[    0.109140] NetLabel:  domain hash size = 128
[    0.109142] NetLabel:  protocols = UNLABELED CIPSOv4
[    0.109229] NetLabel:  unlabeled traffic allowed by default
[    0.109587] clocksource: Switched to clocksource xen
[    0.271243] pnp: PnP ACPI: disabled
[    0.291116] NET: Registered protocol family 2
[    0.292431] TCP established hash table entries: 8192 (order: 4, 65536 bytes)
[    0.292925] TCP bind hash table entries: 8192 (order: 7, 655360 bytes)
[    0.293358] TCP: Hash tables configured (established 8192 bind 8192)
[    0.293530] UDP hash table entries: 512 (order: 4, 98304 bytes)
[    0.293663] UDP-Lite hash table entries: 512 (order: 4, 98304 bytes)
[    0.294059] NET: Registered protocol family 1
[    0.294094] PCI: CLS 0 bytes, default 64
[    0.294796] Unpacking initramfs...
[    1.035811] Freeing initrd memory: 18308K (ffff8800034ac000 - ffff88000468d000)
[    1.059189] DMA-API: preallocated 65536 debug entries
[    1.059196] DMA-API: debugging enabled by kernel config
[    1.059870] platform rtc_cmos: registered platform RTC device (no PNP device found)
[    1.061526] Scanning for low memory corruption every 60 seconds
[    1.064373] futex hash table entries: 256 (order: 3, 32768 bytes)
[    1.064503] audit: initializing netlink subsys (disabled)
[    1.064618] audit: type=2000 audit(1450736715.597:1): initialized
[    1.065856] Initialise system trusted keyring
[    1.066259] cryptomgr_test (29) used greatest stack depth: 14200 bytes left
[    1.066958] HugeTLB registered 2 MB page size, pre-allocated 0 pages
[    1.093715] zbud: loaded
[    1.095425] VFS: Disk quotas dquot_6.6.0
[    1.095846] VFS: Dquot-cache hash table entries: 512 (order 0, 4096 bytes)
[    1.101436] Key type big_key registered
[    1.101443] SELinux:  Registering netfilter hooks
[    1.104257] cryptomgr_test (37) used greatest stack depth: 13768 bytes left
[    1.104943] cryptomgr_test (39) used greatest stack depth: 13368 bytes left
[    1.126867] cryptomgr_test (55) used greatest stack depth: 13304 bytes left
[    1.131554] NET: Registered protocol family 38
[    1.131609] Key type asymmetric registered
[    1.131632] Asymmetric key parser 'x509' registered
[    1.131730] Block layer SCSI generic (bsg) driver version 0.4 loaded (major 250)
[    1.131988] io scheduler noop registered
[    1.131996] io scheduler deadline registered
[    1.132430] io scheduler cfq registered (default)
[    1.132436] start plist test
[    1.134646] end plist test
[    1.135392] pci_hotplug: PCI Hot Plug PCI Core version: 0.5
[    1.135444] pciehp: PCI Express Hot Plug Controller Driver version: 0.4
[    1.144470] Console: switching to colour frame buffer device 100x37
[    1.145826] console [tty0] disabled
[    1.146079] console [tty0] enabled
[    1.146690] intel_idle: does not run on family 6 model 23
[    1.151831] Serial: 8250/16550 driver, 32 ports, IRQ sharing enabled
[    1.171274] Non-volatile memory driver v1.3
[    1.171579] Linux agpgart interface v0.103
[    1.174348] libphy: Fixed MDIO Bus: probed
[    1.174838] ehci_hcd: USB 2.0 'Enhanced' Host Controller (EHCI) Driver
[    1.174882] ehci-pci: EHCI PCI platform driver
[    1.174958] ohci_hcd: USB 1.1 'Open' Host Controller (OHCI) Driver
[    1.174990] ohci-pci: OHCI PCI platform driver
[    1.175101] uhci_hcd: USB Universal Host Controller Interface driver
[    1.175482] usbcore: registered new interface driver usbserial
[    1.175535] usbcore: registered new interface driver usbserial_generic
[    1.175681] usbserial: USB Serial support registered for generic
[    1.175893] i8042: PNP: No PS/2 controller found. Probing ports directly.
[    2.202307] i8042: No controller found
[    2.202392] clocksource: tsc: mask: 0xffffffffffffffff max_cycles: 0x22825b615de, max_idle_ns: 440795258156 ns
[    2.203115] mousedev: PS/2 mouse device common for all mice
[    2.205539] input: Xen Virtual Keyboard as /devices/virtual/input/input0
[    2.206415] input: Xen Virtual Pointer as /devices/virtual/input/input1
[    2.232350] rtc_cmos rtc_cmos: rtc core: registered rtc_cmos as rtc0
[    2.253244] rtc_cmos rtc_cmos: alarms up to one day, 114 bytes nvram
[    2.253905] device-mapper: uevent: version 1.0.3
[    2.254883] device-mapper: ioctl: 4.34.0-ioctl (2015-10-28) initialised: dm-devel@redhat.com
[    2.255308] dmi-sysfs: dmi entry is absent.
[    2.255494] hidraw: raw HID events driver (C) Jiri Kosina
[    2.255935] usbcore: registered new interface driver usbhid
[    2.255938] usbhid: USB HID core driver
[    2.256140] drop_monitor: Initializing network drop monitor service
[    2.256430] ip_tables: (C) 2000-2006 Netfilter Core Team
[    2.256540] Initializing XFRM netlink socket
[    2.258889] NET: Registered protocol family 10
[    2.260915] mip6: Mobile IPv6
[    2.260943] NET: Registered protocol family 17
[    2.260968] mce: Unable to init device /dev/mcelog (rc: -5)
[    2.262751] registered taskstats version 1
[    2.262780] Loading compiled-in X.509 certificates
[    2.264213] Loaded X.509 cert 'Fedora kernel signing key: 91b5d8b27df7790550ed28110bcfec39686a6ea5'
[    2.264733] zswap: loaded using pool lzo/zbud
[    2.267490] xenbus_probe_frontend: Device with no driver: device/vbd/51712
[    2.267499] xenbus_probe_frontend: Device with no driver: device/vif/0
[    2.267911]   Magic number: 1:252:3141
[    2.288038] rtc_cmos rtc_cmos: hctosys: unable to read the hardware clock
[    2.308651] PM: Hibernation image not present or could not be loaded.
[    2.317707] Freeing unused kernel memory: 3772K (ffffffff81fc0000 - ffffffff8236f000)
[    2.317713] Write protecting the kernel read-only data: 14336k
[    2.344831] Freeing unused kernel memory: 1504K (ffff880001888000 - ffff880001a00000)
[    2.345714] Freeing unused kernel memory: 380K (ffff880001da1000 - ffff880001e00000)
[    2.345723] ------------[ cut here ]------------
[    2.345731] WARNING: CPU: 0 PID: 1 at arch/x86/mm/dump_pagetables.c:225 note_page+0x5e1/0x780()
[    2.345735] x86/mm: Found insecure W+X mapping at address ffff880000000000/0xffff880000000000
[    2.345737] Modules linked in:
[    2.345741] CPU: 0 PID: 1 Comm: swapper/0 Not tainted 4.4.0-0.rc5.git3.1.fc24.x86_64 #1
[    2.345744]  0000000000000000 00000000a3f233d1 ffff88003e2f3d48 ffffffff81427df9
[    2.345748]  ffff88003e2f3d90 ffff88003e2f3d80 ffffffff810add82 ffff88003e2f3e90
[    2.345751]  0010000000000067 0000000000000004 0000000000000000 0000000000000000
[    2.345755] Call Trace:
[    2.345762]  [<ffffffff81427df9>] dump_stack+0x4b/0x72
[    2.345765]  [<ffffffff810add82>] warn_slowpath_common+0x82/0xc0
[    2.345768]  [<ffffffff810ade1c>] warn_slowpath_fmt+0x5c/0x80
[    2.345771]  [<ffffffff810792f1>] note_page+0x5e1/0x780
[    2.345774]  [<ffffffff81079797>] ptdump_walk_pgd_level_core+0x307/0x450
[    2.345777]  [<ffffffff81079987>] ptdump_walk_pgd_level_checkwx+0x17/0x20
[    2.345780]  [<ffffffff8106ef94>] mark_rodata_ro+0xf4/0x100
[    2.345784]  [<ffffffff81870c40>] ? rest_init+0x140/0x140
[    2.345786]  [<ffffffff81870c5d>] kernel_init+0x1d/0xe0
[    2.345790]  [<ffffffff8188019f>] ret_from_fork+0x3f/0x70
[    2.345792]  [<ffffffff81870c40>] ? rest_init+0x140/0x140
[    2.345794] ---[ end trace 555b7fd29024e59b ]---
[    2.356367] x86/mm: Checked W+X mappings: FAILED, 5447 W+X pages found.
[    2.461685] random: systemd urandom read with 27 bits of entropy available
[    2.473189] systemd[1]: systemd 228 running in system mode. (+PAM +AUDIT +SELINUX +IMA -APPARMOR +SMACK +SYSVINIT +UTMP +LIBCRYPTSETUP +GCRYPT +GNUTLS +ACL +XZ +LZ4 +SECCOMP +BLKID +ELFUTILS +KMOD +IDN)
[    2.473815] systemd[1]: Detected virtualization xen.
[    2.473838] systemd[1]: Detected architecture x86-64.
[    2.473853] systemd[1]: Running in initial RAM disk.
[    2.473994] systemd[1]: Set hostname to <localhost.localdomain>.
[    3.025305] systemd[1]: Listening on Journal Socket (/dev/log).
[    3.025654] systemd[1]: Reached target Swap.
[    3.026234] systemd[1]: Listening on udev Control Socket.
[    3.026284] systemd[1]: Reached target Local File Systems.
[    3.026695] systemd[1]: Listening on Journal Audit Socket.
[    3.054535] systemd[1]: Created slice System Slice.
[    3.054585] systemd[1]: Reached target Slices.
[    3.054761] systemd[1]: Listening on udev Kernel Socket.
[    3.055212] systemd[1]: Listening on Journal Socket.
[    3.055929] systemd[1]: Reached target Sockets.
[    3.063417] systemd[1]: Starting Create list of required static device nodes for the current kernel...
[    3.100573] systemd[1]: Starting Apply Kernel Variables...
[    3.124622] systemd[1]: Starting dracut cmdline hook...
[    3.144801] systemd-sysctl (111) used greatest stack depth: 13280 bytes left
[    3.153557] systemd[1]: Starting Journal Service...
[    3.153664] systemd[1]: Reached target Timers.
[    3.213215] systemd[1]: Starting Setup Virtual Console...
[    3.333943] systemd[1]: Started Create list of required static device nodes for the current kernel.
[    3.337456] audit: type=1130 audit(1450736717.870:2): pid=1 uid=0 auid=4294967295 ses=4294967295 subj=kernel msg='unit=kmod-static-nodes comm="systemd" exe="/usr/lib/systemd/systemd" hostname=? addr=? terminal=? res=success'
[    3.357847] systemd[1]: Started Apply Kernel Variables.
[    3.357954] audit: type=1130 audit(1450736717.890:3): pid=1 uid=0 auid=4294967295 ses=4294967295 subj=kernel msg='unit=systemd-sysctl comm="systemd" exe="/usr/lib/systemd/systemd" hostname=? addr=? terminal=? res=success'
[    3.538788] systemd[1]: Starting Create Static Device Nodes in /dev...
[    3.589002] systemd[1]: Started Journal Service.
[    3.590928] audit: type=1130 audit(1450736718.123:4): pid=1 uid=0 auid=4294967295 ses=4294967295 subj=kernel msg='unit=systemd-journald comm="systemd" exe="/usr/lib/systemd/systemd" hostname=? addr=? terminal=? res=success'
[    3.653183] audit: type=1130 audit(1450736718.186:5): pid=1 uid=0 auid=4294967295 ses=4294967295 subj=kernel msg='unit=systemd-tmpfiles-setup-dev comm="systemd" exe="/usr/lib/systemd/systemd" hostname=? addr=? terminal=? res=success'
[    4.402279] audit: type=1130 audit(1450736718.935:6): pid=1 uid=0 auid=4294967295 ses=4294967295 subj=kernel msg='unit=systemd-vconsole-setup comm="systemd" exe="/usr/lib/systemd/systemd" hostname=? addr=? terminal=? res=success'
[    5.079691] audit: type=1130 audit(1450736719.612:7): pid=1 uid=0 auid=4294967295 ses=4294967295 subj=kernel msg='unit=dracut-cmdline comm="systemd" exe="/usr/lib/systemd/systemd" hostname=? addr=? terminal=? res=success'
[    5.464018] audit: type=1130 audit(1450736719.996:8): pid=1 uid=0 auid=4294967295 ses=4294967295 subj=kernel msg='unit=dracut-pre-udev comm="systemd" exe="/usr/lib/systemd/systemd" hostname=? addr=? terminal=? res=success'
[    5.556088] audit: type=1130 audit(1450736720.089:9): pid=1 uid=0 auid=4294967295 ses=4294967295 subj=kernel msg='unit=systemd-udevd comm="systemd" exe="/usr/lib/systemd/systemd" hostname=? addr=? terminal=? res=success'
[    6.427256] systemd-udevd (260) used greatest stack depth: 13240 bytes left
[    6.706265] audit: type=1130 audit(1450736721.239:10): pid=1 uid=0 auid=4294967295 ses=4294967295 subj=kernel msg='unit=systemd-udev-trigger comm="systemd" exe="/usr/lib/systemd/systemd" hostname=? addr=? terminal=? res=success'
[    7.392676] xen_netfront: Initialising Xen virtual ethernet driver
[    7.439664] blkfront: xvda: flush diskcache: enabled; persistent grants: enabled; indirect descriptors: enabled;
[    7.478356]  xvda: xvda1 xvda2
[    8.580155] random: nonblocking pool is initialized
[    9.628847] systemd-udevd (283) used greatest stack depth: 12592 bytes left
[    9.809550] genirq: Flags mismatch irq 8. 00000000 (hvc_console) vs. 00000000 (rtc0)
[    9.809614] CPU: 0 PID: 270 Comm: plymouthd Tainted: G        W       4.4.0-0.rc5.git3.1.fc24.x86_64 #1
[    9.809617]  0000000000000000 0000000047116a70 ffff880039d1fb10 ffffffff81427df9
[    9.809622]  ffff88003daac200 ffff880039d1fb68 ffffffff81121bc7 ffff88003daa02a0
[    9.809625]  ffff88003daac2a0 ffff88003a1eb430 0000000047116a70 ffffffff81545c60
[    9.809629] Call Trace:
[    9.809639]  [<ffffffff81427df9>] dump_stack+0x4b/0x72
[    9.809643]  [<ffffffff81121bc7>] __setup_irq+0x5e7/0x630
[    9.809648]  [<ffffffff81545c60>] ? hvc_instantiate+0xb0/0xb0
[    9.809651]  [<ffffffff81121d98>] request_threaded_irq+0xf8/0x1a0
[    9.809654]  [<ffffffff81545ccc>] notifier_add_irq+0x3c/0x50
[    9.809656]  [<ffffffff8154502f>] hvc_open+0x8f/0x110
[    9.809660]  [<ffffffff8152a623>] tty_open+0x123/0x660
[    9.809664]  [<ffffffff8127b10e>] chrdev_open+0xae/0x1c0
[    9.809668]  [<ffffffff81273e27>] do_dentry_open+0x217/0x310
[    9.809670]  [<ffffffff8127b060>] ? cdev_put+0x30/0x30
[    9.809673]  [<ffffffff8127535c>] vfs_open+0x5c/0x70
[    9.809677]  [<ffffffff812857f6>] path_openat+0x1e6/0x1260
[    9.809682]  [<ffffffff810e8037>] ? sched_clock_local+0x17/0x80
[    9.809685]  [<ffffffff81287cd1>] do_filp_open+0x91/0x100
[    9.809691]  [<ffffffff8187f397>] ? _raw_spin_unlock+0x27/0x40
[    9.809695]  [<ffffffff81298179>] ? __alloc_fd+0xf9/0x210
[    9.809698]  [<ffffffff8127575a>] do_sys_open+0x13a/0x230
[    9.809701]  [<ffffffff8127586e>] SyS_open+0x1e/0x20
[    9.809704]  [<ffffffff8187fe32>] entry_SYSCALL_64_fastpath+0x12/0x76
[    9.809714] hvc_open: request_irq failed with rc -16.

[-- Attachment #3: Type: text/plain, Size: 126 bytes --]

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^ permalink raw reply	[flat|nested] 2+ messages in thread

* Re: hvc console not working on 4.4.0 guest
  2015-12-21 22:57 hvc console not working on 4.4.0 guest M A Young
@ 2015-12-22 10:01 ` David Vrabel
  0 siblings, 0 replies; 2+ messages in thread
From: David Vrabel @ 2015-12-22 10:01 UTC (permalink / raw)
  To: M A Young, xen-devel

On 21/12/15 22:57, M A Young wrote:
> I am testing Fedora rawhide in a xen pv guest and I get the error
> [    9.809550] genirq: Flags mismatch irq 8. 00000000 (hvc_console) vs. 
> 00000000 (rtc0)
> [    9.809714] hvc_open: request_irq failed with rc -16.
> during the boot and the hvc console doesn't respond when the boot 
> finishes. I have noticed this I think since the update through various 
> linux 4.4.0 kernels up to the current 4.4.0-0.rc5.git3.1.fc24.x86_64 one.
> I do get an hvc console if I use the Fedora 23 kernel 4.2.6-300.fc23.x86_64
> from before the update.
> Is this a known problem? I have attached the boot log up to the above 
> error. 

Fixed by "x86: Xen PV guests don't have the rtc_cmos platform device"
which hasn't yet been applied.

As a workaround try using a 2 VCPU guest.

David

^ permalink raw reply	[flat|nested] 2+ messages in thread

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2015-12-21 22:57 hvc console not working on 4.4.0 guest M A Young
2015-12-22 10:01 ` David Vrabel

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