Bug#688964: qemu-kvm: Fedora 17 guest hangs on boot with soft lockup in udevd
On 09/27/2012 11:06 PM, Michael Tokarev wrote: Easiest way to get a backtrace is to add a serial console to guest (I used -serial file:out), set it up in grub (console=ttyS0), AND remove quiet parameter from kernel command line, together with rhgb. The quiet thing is the most frequently forgotten parameter. Thanks. I suspected there was something like that. I used the serial console in virt-manager, but obviously it didn't help. Shall be removing both of these parameters from all my VMs. Thank you very much for fixing it this fast :)! It was really easy to find the stuff in between the 13 commits :) And Jan noted the right place as well, it is more his work than mine. Well, still, nothing was preventing you from putting it off ;) Now, it isn't really clear when this fix will hit the debian archive (ie, will be released to debian). I understand it is annoying to have bugs like this, but I'm afraid to push even more work to the release team. Current freeze policy is to allow fixing only bugs with severity serious and up, and your does not qualify :) Sure, I agree with the policy. It's not a big deal for me to live with a self-built package - it's only needed for a single laptop. However, someone else might find this cumbersome. Could you please tag your last two dfsg releases, so it is easier to check them out next time? I tagged it the time when I uploaded them, but forgot to push. I forget to push the tags quite often myself. Note I changed the tag format to include package name too, since else the tags in qemu and qemu-kvm packages/repositories clashes with each other. Sure, the important thing is that they're there. Thank you :) Sincerely, Nick -- To UNSUBSCRIBE, email to debian-bugs-dist-requ...@lists.debian.org with a subject of unsubscribe. Trouble? Contact listmas...@lists.debian.org
Bug#688964: qemu-kvm: Fedora 17 guest hangs on boot with soft lockup in udevd
Package: qemu-kvm Version: 1.1.2+dfsg-2 Severity: important A fully-updated 64-bit Fedora 17 guest using the 3.5.4-1.fc17.x86_64 kernel hangs on boot with the following repeated messages on the console: BUG: soft lockup - CPU#0 stuck for 22s! [udevd:417] It boots at least with 1.1.0+dfsg-3. The 1.1.1+dfsg-1 breaks it. The qemu-kvm was being controlled by virt-manager. Trying to bisect it with git, skipping merged commits, which don't have the debian directory, produced the following list of commits which could be breaking it: dbe4ac16bbab4c237ff54132968accad4f5a4757 f63e60327b8e239ae97fa71060940ca20a8bf38e 02fe741375d4993b3d6870ff6466cc775b409ba1 0ec39075710ae15acc2a5825cd21e0c229fa04af 1658e3cd893e3a35d89388fdd736a6d81cb405e8 ee7735fa639c43ccb3746d84609332e48e22479f 065436479b9164b51892dbd7a7e35a3f9f496894 0da4c073228c645a0366f3fe801df072cf268482 70d582074f0b9485ad9800f8e0126ef68608ba85 f6db26e4f8fe6d80e17aa62e6bcc465e323a7fee 4c45bf61d315316b5932051551c16b17cf9b3d85 c49dd1bf6450b7880972b2f176ec10e8a496073c b4fcb4b4995b292b6013600af78d37416c6ebb34 c9c2479289fd1faf4a1a40db54cc255fbf03af21 7672b714b28e3d49f73c605873404bf6f644c2b2 feba8ae20b372115bc15432d7c484171c25bee62 7d440f20bda8658fe16bdfe9c41c689764c50248 ca09717e8e0664801522781962a3c727d04eef33 0cc21de484d4f00c7b7cacb487bd343cc55effa5 845685265756467050859e2359acf1632352 08375616a0e24484f313900311e1748a2fe12f87 cd63a77e990f68a699ba220c8006386bd4379f81 b7093f294c330c4db789c077dac9d8611e4f8ee0 b993b863e78ae54c5e966f4e1626bc37c560e6aa 07ff37597bee726681c94c650568870bd4ff94d1 4082e889ee8aa43b303105180399bab14312231e e77326d99c938d78a06036b8529b669253baec59 f52d0d639e96f30b226b853d931881d034c57308 785adb09b9fd0d4df6707f00247ec519c42fcfc6 8b3ac661208c88b9d424ede176b99be6fff1283e 2eb4d314cef55749f7835f6338080895daed277e adda59173c976b8863d74b612fafa9212b9182f2 7fa12eb15f95c269f488fce4096093c96dbaffab b696aeab6ad6abe3b45fac96264a40a555ff64ce 6514fe50471ca277c461435b17771e91c115b010 6f82a5ea52302bab33287b0191538be6f9138637 dd48eac4f170fa78ada12df70573c0d757f8febf 37add8028a2872563e7c6efa598e439508eb9a53 398b87f4ef3426569bdda2da2c9c2b89f4ba906f c63c453889d0bfbd183da686bc076590220fd44a 94a6e73b39d7f9ad8ebebaa080932437690a7412 -- Package-specific info: /proc/cpuinfo: processor : 0 vendor_id : GenuineIntel cpu family : 6 model : 58 model name : Intel(R) Core(TM) i7-3520M CPU @ 2.90GHz stepping: 9 microcode : 0x12 cpu MHz : 1200.000 cache size : 4096 KB physical id : 0 siblings: 4 core id : 0 cpu cores : 2 apicid : 0 initial apicid : 0 fpu : yes fpu_exception : yes cpuid level : 13 wp : yes flags : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm pbe syscall nx rdtscp lm constant_tsc arch_perfmon pebs bts rep_good nopl xtopology nonstop_tsc aperfmperf pni pclmulqdq dtes64 monitor ds_cpl vmx smx est tm2 ssse3 cx16 xtpr pdcm pcid sse4_1 sse4_2 x2apic popcnt tsc_deadline_timer aes xsave avx f16c rdrand lahf_lm ida arat epb xsaveopt pln pts dtherm tpr_shadow vnmi flexpriority ept vpid fsgsbase smep erms bogomips: 5787.07 clflush size: 64 cache_alignment : 64 address sizes : 36 bits physical, 48 bits virtual power management: processor : 1 vendor_id : GenuineIntel cpu family : 6 model : 58 model name : Intel(R) Core(TM) i7-3520M CPU @ 2.90GHz stepping: 9 microcode : 0x12 cpu MHz : 1200.000 cache size : 4096 KB physical id : 0 siblings: 4 core id : 0 cpu cores : 2 apicid : 1 initial apicid : 1 fpu : yes fpu_exception : yes cpuid level : 13 wp : yes flags : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm pbe syscall nx rdtscp lm constant_tsc arch_perfmon pebs bts rep_good nopl xtopology nonstop_tsc aperfmperf pni pclmulqdq dtes64 monitor ds_cpl vmx smx est tm2 ssse3 cx16 xtpr pdcm pcid sse4_1 sse4_2 x2apic popcnt tsc_deadline_timer aes xsave avx f16c rdrand lahf_lm ida arat epb xsaveopt pln pts dtherm tpr_shadow vnmi flexpriority ept vpid fsgsbase smep erms bogomips: 5787.07 clflush size: 64 cache_alignment : 64 address sizes : 36 bits physical, 48 bits virtual power management: processor : 2 vendor_id : GenuineIntel cpu family : 6 model : 58 model name : Intel(R) Core(TM) i7-3520M CPU @ 2.90GHz stepping: 9 microcode : 0x12 cpu MHz : 1200.000 cache size : 4096 KB physical id : 0 siblings: 4 core id : 1 cpu cores : 2 apicid : 2 initial apicid : 2 fpu : yes fpu_exception : yes cpuid level : 13 wp : yes flags : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36
Bug#688964: qemu-kvm: Fedora 17 guest hangs on boot with soft lockup in udevd
Control: tags -1 + moreinfo On 27.09.2012 18:27, Nikolai Kondrashov wrote: Package: qemu-kvm Version: 1.1.2+dfsg-2 Severity: important A fully-updated 64-bit Fedora 17 guest using the 3.5.4-1.fc17.x86_64 kernel hangs on boot with the following repeated messages on the console: BUG: soft lockup - CPU#0 stuck for 22s! [udevd:417] It boots at least with 1.1.0+dfsg-3. The 1.1.1+dfsg-1 breaks it. Ok, so this is a breakage in 1.1.x stable series. This update contains 30 commits -- http://git.qemu.org/?p=qemu-stable-1.1.git;a=shortlog between v1.1.1 and v1.1.0 tags. 2 of these commits are already in qemu-kvm 1.1.0, and 15 commits are completely irrelevant (touching different architectures, or are documentation fixes, or adding config-time checks etc. So that's definitely not too much. The qemu-kvm was being controlled by virt-manager. Please provide full command line which virt-manager uses. You can find it in virtmanager logs or in ps(1) output. Trying to bisect it with git, skipping merged commits, which don't have the debian directory, produced the following list of commits which could be breaking it: Bisecting these 13 commits is a bit, well, fun, but bisecting across merges is difficult. dbe4ac16bbab4c237ff54132968accad4f5a4757 f63e60327b8e239ae97fa71060940ca20a8bf38e 02fe741375d4993b3d6870ff6466cc775b409ba1 0ec39075710ae15acc2a5825cd21e0c229fa04af 1658e3cd893e3a35d89388fdd736a6d81cb405e8 ee7735fa639c43ccb3746d84609332e48e22479f 065436479b9164b51892dbd7a7e35a3f9f496894 0da4c073228c645a0366f3fe801df072cf268482 70d582074f0b9485ad9800f8e0126ef68608ba85 f6db26e4f8fe6d80e17aa62e6bcc465e323a7fee 4c45bf61d315316b5932051551c16b17cf9b3d85 c49dd1bf6450b7880972b2f176ec10e8a496073c b4fcb4b4995b292b6013600af78d37416c6ebb34 c9c2479289fd1faf4a1a40db54cc255fbf03af21 7672b714b28e3d49f73c605873404bf6f644c2b2 feba8ae20b372115bc15432d7c484171c25bee62 7d440f20bda8658fe16bdfe9c41c689764c50248 ca09717e8e0664801522781962a3c727d04eef33 0cc21de484d4f00c7b7cacb487bd343cc55effa5 845685265756467050859e2359acf1632352 08375616a0e24484f313900311e1748a2fe12f87 cd63a77e990f68a699ba220c8006386bd4379f81 b7093f294c330c4db789c077dac9d8611e4f8ee0 b993b863e78ae54c5e966f4e1626bc37c560e6aa 07ff37597bee726681c94c650568870bd4ff94d1 4082e889ee8aa43b303105180399bab14312231e e77326d99c938d78a06036b8529b669253baec59 f52d0d639e96f30b226b853d931881d034c57308 785adb09b9fd0d4df6707f00247ec519c42fcfc6 8b3ac661208c88b9d424ede176b99be6fff1283e 2eb4d314cef55749f7835f6338080895daed277e adda59173c976b8863d74b612fafa9212b9182f2 7fa12eb15f95c269f488fce4096093c96dbaffab b696aeab6ad6abe3b45fac96264a40a555ff64ce 6514fe50471ca277c461435b17771e91c115b010 6f82a5ea52302bab33287b0191538be6f9138637 dd48eac4f170fa78ada12df70573c0d757f8febf 37add8028a2872563e7c6efa598e439508eb9a53 398b87f4ef3426569bdda2da2c9c2b89f4ba906f c63c453889d0bfbd183da686bc076590220fd44a 94a6e73b39d7f9ad8ebebaa080932437690a7412 Wow. That's quite a bit more than 13 commits which are EVER possible to be the problem ;) I don't understand what did you bisect. Please give me some pointers about how to install this fedora version - download links, options you've choosen etc. I haven't used redhat-based distro for more than 10 years, so your help can greatly reduce time required to solve this. And please don't forget to provide the command line. Thanks, /mjt -- To UNSUBSCRIBE, email to debian-bugs-dist-requ...@lists.debian.org with a subject of unsubscribe. Trouble? Contact listmas...@lists.debian.org
Bug#688964: qemu-kvm: Fedora 17 guest hangs on boot with soft lockup in udevd
On 09/27/2012 06:23 PM, Michael Tokarev wrote: Please provide full command line which virt-manager uses. You can find it in virtmanager logs or in ps(1) output. Here is the command line: LC_ALL=C PATH=/usr/local/sbin:/usr/local/bin:/sbin:/bin:/usr/sbin:/usr/bin HOME=/root USER=root LOGNAME=root QEMU_AUDIO_DRV=none /usr/bin/kvm -S -M pc-1.1 -enable-kvm -m 1024 -smp 1,sockets=1,cores=1,threads=1 -name fedora-hang-test -uuid d155797a-03fb-0181-8e71-8d38181a7158 -nodefconfig -nodefaults -chardev socket,id=charmonitor,path=/var/lib/libvirt/qemu/fedora-hang-test.monitor,server,nowait -mon chardev=charmonitor,id=monitor,mode=control -rtc base=utc -no-shutdown -device piix3-usb-uhci,id=usb,bus=pci.0,addr=0x1.0x2 -drive file=/var/lib/libvirt/images/fedora-hang-test.img,if=none,id=drive-virtio-disk0,format=raw -device virtio-blk-pci,scsi=off,bus=pci.0,addr=0x5,drive=drive-virtio-disk0,id=virtio-disk0,bootindex=1 -drive file=/home/nkondras/tmp/Fedora-17-x86_64-Live-Desktop.iso,if=none,id=drive-ide0-1-0,readonly=on,format=raw -device ide-cd,bus=ide.1,unit=0,drive=drive-ide0-1-0,id=ide0-1-0 -netdev tap,fd=20,id=hostnet0,vhost=on,vhostfd=22 -device virtio-net-pci,netdev=hostnet0,id=net0,mac=52:54:00:5e:20:81,bus=pci.0,addr=0x3 -chardev pty,id=charserial0 -device isa-serial,chardev=charserial0,id=serial0 -device usb-tablet,id=input0 -vnc 127.0.0.1:1 -vga cirrus -device intel-hda,id=sound0,bus=pci.0,addr=0x4 -device hda-duplex,id=sound0-codec0,bus=sound0.0,cad=0 -device virtio-balloon-pci,id=balloon0,bus=pci.0,addr=0x6 Bisecting these 13 commits is a bit, well, fun, but bisecting across merges is difficult. That's why I only narroved them down to these 41. Wow. That's quite a bit more than 13 commits which are EVER possible to be the problem ;) Yes :) I don't understand what did you bisect. I did git bisect start debian/1.1.1+dfsg-1 debian/1.1.0+dfsg-3 and then git bisect skip 864599d0..37add802. Please give me some pointers about how to install this fedora version - download links, options you've choosen etc. I haven't used redhat-based distro for more than 10 years, so your help can greatly reduce time required to solve this. Simply booting from this Live CD hangs: http://download.fedoraproject.org/pub/fedora/linux/releases/17/Live/x86_64/Fedora-17-x86_64-Live-Desktop.iso Thanks! -- To UNSUBSCRIBE, email to debian-bugs-dist-requ...@lists.debian.org with a subject of unsubscribe. Trouble? Contact listmas...@lists.debian.org
Bug#688964: qemu-kvm: Fedora 17 guest hangs on boot with soft lockup in udevd
On 27.09.2012 20:25, Nikolai Kondrashov wrote: On 09/27/2012 06:23 PM, Michael Tokarev wrote: Please provide full command line which virt-manager uses. You can find it in virtmanager logs or in ps(1) output. Here is the command line: LC_ALL=C PATH=/usr/local/sbin:/usr/local/bin:/sbin:/bin:/usr/sbin:/usr/bin HOME=/root USER=root LOGNAME=root QEMU_AUDIO_DRV=none /usr/bin/kvm -S -M pc-1.1 -enable-kvm -m 1024 -smp 1,sockets=1,cores=1,threads=1 -name fedora-hang-test -uuid d155797a-03fb-0181-8e71-8d38181a7158 -nodefconfig -nodefaults -chardev socket,id=charmonitor,path=/var/lib/libvirt/qemu/fedora-hang-test.monitor,server,nowait -mon chardev=charmonitor,id=monitor,mode=control -rtc base=utc -no-shutdown -device piix3-usb-uhci,id=usb,bus=pci.0,addr=0x1.0x2 -drive file=/var/lib/libvirt/images/fedora-hang-test.img,if=none,id=drive-virtio-disk0,format=raw -device virtio-blk-pci,scsi=off,bus=pci.0,addr=0x5,drive=drive-virtio-disk0,id=virtio-disk0,bootindex=1 -drive file=/home/nkondras/tmp/Fedora-17-x86_64-Live-Desktop.iso,if=none,id=drive-ide0-1-0,readonly=on,format=raw -device ide-cd,bus=ide.1,unit=0,drive=drive-ide0-1-0,id=ide0-1-0 -netdev tap,fd=20,id=hostnet0,vhost=on,vhostfd=22 -device virtio-net-pci,netdev=hostnet0,id=net0,mac=52:54:00:5e:20:81,bus=pci.0,addr=0x3 -chardev pty,id=charserial0 -device isa-serial,chardev=charserial0,id=serial0 -device usb-tablet,id=input0 -vnc 127.0.0.1:1 -vga cirrus -device intel-hda,id=sound0,bus=pci.0,addr=0x4 -device hda-duplex,id=sound0-codec0,bus=sound0.0,cad=0 -device virtio-balloon-pci,id=balloon0,bus=pci.0,addr=0x6 Simply booting from this Live CD hangs: http://download.fedoraproject.org/pub/fedora/linux/releases/17/Live/x86_64/Fedora-17-x86_64-Live-Desktop.iso Ok. I reproduced this, I _think_, and now I want some confirmation from you. This is my command line: QEMU_AUDIO_DRV=none qemu-kvm -nodefconfig -nodefaults -enable-kvm \ -monitor stdio -rtc base=utc \ -device piix3-usb-uhci,id=usb,bus=pci.0,addr=0x1.0x2 \ -m 512 -vga cirrus -cdrom Fedora-17-x86_64-Live-Desktop.iso \ -device intel-hda,id=sound0,bus=pci.0,addr=0x4 \ -device hda-duplex,id=sound0-codec0,bus=sound0.0,cad=0 leads to this in guest: ... Starting udev Wait for Complete Device Initialization... [4.123978] piix4_smbus :00:01.3: SMBus Host Controller at 0xb100, revision 0 [4.311473] microcode: AMD CPU family 0x6 not supported [4.355429] microcode: AMD CPU family 0x6 not supported [7.323032] ALSA sound/pci/hda/hda_intel.c:823 azx_get_response timeout, switching to polling mode: last cmd=0x000f [8.325018] ALSA sound/pci/hda/hda_intel.c:831 No response from codec, disabling MSI: last cmd=0x000f [ 36.055021] BUG: soft lockup - CPU#0 stuck for 22s! [udevd:385] [ 36.055026] Modules linked in: snd_hda_intel(+) snd_hda_codec snd_hwdep i2c_piix4 snd_pcm i2c_core snd_page_alloc snd_timer snd soundcore uinput squashfs [ 36.055026] CPU 0 [ 36.055026] Modules linked in: snd_hda_intel(+) snd_hda_codec snd_hwdep i2c_piix4 snd_pcm i2c_core snd_page_alloc snd_timer snd soundcore uinput squashfs [ 36.055026] [ 36.055026] [ 36.055026] Pid: 385, comm: udevd Not tainted 3.3.4-5.fc17.x86_64 #1 Bochs Bochs [ 36.055026] RIP: 0010:[8105dc40] [8105dc40] __do_softirq+0x70/0x1e0 [ 36.055026] RSP: 0018:88001f003ef0 EFLAGS: 0206 [ 36.055026] RAX: 88001f8a7fd8 RBX: 81a17240 RCX: 0001f0542108 [ 36.055026] RDX: RSI: 006f RDI: 0002 [ 36.055026] RBP: 88001f003f40 R08: R09: 81c64540 [ 36.055026] R10: 0400 R11: 0020 R12: 88001f003e68 [ 36.055026] R13: 815f439e R14: 88001f003f40 R15: 0046 [ 36.055026] FS: 7f14b7509840() GS:88001f00() knlGS: [ 36.055026] CS: 0010 DS: ES: CR0: 8005003b [ 36.055026] CR2: 7fa5e9e4 CR3: 1f80e000 CR4: 06f0 [ 36.055026] DR0: DR1: DR2: [ 36.055026] DR3: DR6: 0ff0 DR7: 0400 [ 36.055026] Process udevd (pid: 385, threadinfo 88001f8a6000, task 88001b218000) [ 36.055026] Stack: [ 36.055026] 8101ac19 88001f8a7fd8 88001f8a7fd8 880a [ 36.055026] 88001f014000 88001f8a7fd8 0046 0007 [ 36.055026] 0050 0001 88001f003f58 815f4d9c [ 36.055026] Call Trace: [ 36.055026] IRQ [ 36.055026] [815f4d9c] call_softirq+0x1c/0x30 [ 36.055026] [81015465] do_softirq+0x75/0xb0 [ 36.055026] [8105e055] irq_exit+0xb5/0xc0 [ 36.055026] [815f56ee] smp_apic_timer_interrupt+0x6e/0x99 [ 36.055026] [815f439e] apic_timer_interrupt+0x6e/0x80 [ 36.055026] EOI [ 36.055026] [810e22ac]
Bug#688964: qemu-kvm: Fedora 17 guest hangs on boot with soft lockup in udevd
To clarify: 1. this only affects 1.1.x tree (which is a history for most developers already) 2. the same guest boots okay with 1.2 (with kvm and irqchip enabled). BTW, what is this hda-duplex device anyway? I never heard of it before now :). And I guess using QEMU_AUDIO_DRV=none with a guest sound device isn't very smart move ;) (But setting it to something else does not change things). Also note that 1.1.1 contained one more patch which added msi reset, this time for ahci. Thanks, /mjt QEMU_AUDIO_DRV=none qemu-kvm -nodefconfig -nodefaults -enable-kvm \ -monitor stdio -rtc base=utc \ -device piix3-usb-uhci,id=usb,bus=pci.0,addr=0x1.0x2 \ -m 512 -vga cirrus -cdrom Fedora-17-x86_64-Live-Desktop.iso \ -device intel-hda,id=sound0,bus=pci.0,addr=0x4 \ -device hda-duplex,id=sound0-codec0,bus=sound0.0,cad=0 leads to this in guest: ... Starting udev Wait for Complete Device Initialization... [4.123978] piix4_smbus :00:01.3: SMBus Host Controller at 0xb100, revision 0 [4.311473] microcode: AMD CPU family 0x6 not supported [4.355429] microcode: AMD CPU family 0x6 not supported [7.323032] ALSA sound/pci/hda/hda_intel.c:823 azx_get_response timeout, switching to polling mode: last cmd=0x000f [8.325018] ALSA sound/pci/hda/hda_intel.c:831 No response from codec, disabling MSI: last cmd=0x000f [ 36.055021] BUG: soft lockup - CPU#0 stuck for 22s! [udevd:385] [ 36.055026] Modules linked in: snd_hda_intel(+) snd_hda_codec snd_hwdep i2c_piix4 snd_pcm i2c_core snd_page_alloc snd_timer snd soundcore uinput squashfs commit 0ec39075710ae15acc2a5825cd21e0c229fa04af (8e729e3b521d9fcd87fc2e40b6322e684f58bb2e upstream) Author: Jan Kiszka jan.kis...@siemens.com Date: Fri May 11 11:42:35 2012 -0300 intel-hda: Fix reset of MSI function -- To UNSUBSCRIBE, email to debian-bugs-dist-requ...@lists.debian.org with a subject of unsubscribe. Trouble? Contact listmas...@lists.debian.org
Bug#688964: qemu-kvm: Fedora 17 guest hangs on boot with soft lockup in udevd
On 27.09.2012 22:28, Jan Kiszka wrote:
[]
--- a/hw/intel-hda.c
+++ b/hw/intel-hda.c
@@ -1107,6 +1107,9 @@ static void intel_hda_reset(DeviceState *dev)
DeviceState *qdev;
HDACodecDevice *cdev;
+if (d-msi) {
+msi_reset(d-pci);
+}
intel_hda_regs_reset(d);
d-wall_base_ns = qemu_get_clock_ns(vm_clock);
which is exactly about this hda thing. I'm CC'ing relevant
people here.
I suppose we are resetting the MSI configuration also in cases here
where only the HDA internals are supposed to be reset (when called from
intel_hda_set_g_ctl).
Hmm. I was looking at this code already (but i don't know the machinery
anyway). Here it is (I addedd two printfs in obvious places):
in intel_hda_reset
calling intel_hda_reset from intel_hda_set_g_ctl
in intel_hda_reset
(at this time it hangs in guest).
The following patch fixes it. Is it correct? :)
/mjt
diff --git a/hw/intel-hda.c b/hw/intel-hda.c
index e38861e..fdd7eeb 100644
--- a/hw/intel-hda.c
+++ b/hw/intel-hda.c
@@ -199,7 +199,7 @@ struct IntelHDAReg {
void (*rhandler)(IntelHDAState *d, const IntelHDAReg *reg);
};
-static void intel_hda_reset(DeviceState *dev);
+static void intel_hda_reset_dev(DeviceState *dev);
/* - */
@@ -500,7 +500,7 @@ static void intel_hda_notify_codecs(IntelHDAState *d, uint32_t stream, bool runn
static void intel_hda_set_g_ctl(IntelHDAState *d, const IntelHDAReg *reg, uint32_t old)
{
if ((d-g_ctl ICH6_GCTL_RESET) == 0) {
-intel_hda_reset(d-pci.qdev);
+intel_hda_reset_dev(d-pci.qdev);
}
}
@@ -1101,15 +1101,12 @@ static const MemoryRegionOps intel_hda_mmio_ops = {
/* - */
-static void intel_hda_reset(DeviceState *dev)
+static void intel_hda_reset_dev(DeviceState *dev)
{
IntelHDAState *d = DO_UPCAST(IntelHDAState, pci.qdev, dev);
DeviceState *qdev;
HDACodecDevice *cdev;
-if (d-msi) {
-msi_reset(d-pci);
-}
intel_hda_regs_reset(d);
d-wall_base_ns = qemu_get_clock_ns(vm_clock);
@@ -1122,6 +1119,15 @@ static void intel_hda_reset(DeviceState *dev)
intel_hda_update_irq(d);
}
+static void intel_hda_reset(DeviceState *dev)
+{
+IntelHDAState *d = DO_UPCAST(IntelHDAState, pci.qdev, dev);
+if (d-msi) {
+msi_reset(d-pci);
+}
+intel_hda_reset_dev(dev);
+}
+
static int intel_hda_init(PCIDevice *pci)
{
IntelHDAState *d = DO_UPCAST(IntelHDAState, pci, pci);
Bug#688964: qemu-kvm: Fedora 17 guest hangs on boot with soft lockup in udevd
On 2012-09-27 19:15, Michael Tokarev wrote: On 27.09.2012 20:25, Nikolai Kondrashov wrote: On 09/27/2012 06:23 PM, Michael Tokarev wrote: Please provide full command line which virt-manager uses. You can find it in virtmanager logs or in ps(1) output. Here is the command line: LC_ALL=C PATH=/usr/local/sbin:/usr/local/bin:/sbin:/bin:/usr/sbin:/usr/bin HOME=/root USER=root LOGNAME=root QEMU_AUDIO_DRV=none /usr/bin/kvm -S -M pc-1.1 -enable-kvm -m 1024 -smp 1,sockets=1,cores=1,threads=1 -name fedora-hang-test -uuid d155797a-03fb-0181-8e71-8d38181a7158 -nodefconfig -nodefaults -chardev socket,id=charmonitor,path=/var/lib/libvirt/qemu/fedora-hang-test.monitor,server,nowait -mon chardev=charmonitor,id=monitor,mode=control -rtc base=utc -no-shutdown -device piix3-usb-uhci,id=usb,bus=pci.0,addr=0x1.0x2 -drive file=/var/lib/libvirt/images/fedora-hang-test.img,if=none,id=drive-virtio-disk0,format=raw -device virtio-blk-pci,scsi=off,bus=pci.0,addr=0x5,drive=drive-virtio-disk0,id=virtio-disk0,bootindex=1 -drive file=/home/nkondras/tmp/Fedora-17-x86_64-Live-Desktop.iso,if=none,id=drive-ide0-1-0,readonly=on,format=raw -device ide-cd,bus=ide.1,unit=0,drive=drive-ide0-1-0,id=ide0-1-0 -netdev tap,fd=20,id=hostnet0,vhost=on,vhostfd=22 -device virtio-net-pci,netdev=hostnet0,id=net0,mac=52:54:00:5e:20:81,bus=pci.0,addr=0x3 -chardev pty,id=charserial0 -device isa-serial,chardev=charserial0,id=serial0 -device usb-tablet,id=input0 -vnc 127.0.0.1:1 -vga cirrus -device intel-hda,id=sound0,bus=pci.0,addr=0x4 -device hda-duplex,id=sound0-codec0,bus=sound0.0,cad=0 -device virtio-balloon-pci,id=balloon0,bus=pci.0,addr=0x6 Simply booting from this Live CD hangs: http://download.fedoraproject.org/pub/fedora/linux/releases/17/Live/x86_64/Fedora-17-x86_64-Live-Desktop.iso Ok. I reproduced this, I _think_, and now I want some confirmation from you. This is my command line: QEMU_AUDIO_DRV=none qemu-kvm -nodefconfig -nodefaults -enable-kvm \ -monitor stdio -rtc base=utc \ -device piix3-usb-uhci,id=usb,bus=pci.0,addr=0x1.0x2 \ -m 512 -vga cirrus -cdrom Fedora-17-x86_64-Live-Desktop.iso \ -device intel-hda,id=sound0,bus=pci.0,addr=0x4 \ -device hda-duplex,id=sound0-codec0,bus=sound0.0,cad=0 leads to this in guest: ... Starting udev Wait for Complete Device Initialization... [4.123978] piix4_smbus :00:01.3: SMBus Host Controller at 0xb100, revision 0 [4.311473] microcode: AMD CPU family 0x6 not supported [4.355429] microcode: AMD CPU family 0x6 not supported [7.323032] ALSA sound/pci/hda/hda_intel.c:823 azx_get_response timeout, switching to polling mode: last cmd=0x000f [8.325018] ALSA sound/pci/hda/hda_intel.c:831 No response from codec, disabling MSI: last cmd=0x000f [ 36.055021] BUG: soft lockup - CPU#0 stuck for 22s! [udevd:385] [ 36.055026] Modules linked in: snd_hda_intel(+) snd_hda_codec snd_hwdep i2c_piix4 snd_pcm i2c_core snd_page_alloc snd_timer snd soundcore uinput squashfs [ 36.055026] CPU 0 [ 36.055026] Modules linked in: snd_hda_intel(+) snd_hda_codec snd_hwdep i2c_piix4 snd_pcm i2c_core snd_page_alloc snd_timer snd soundcore uinput squashfs [ 36.055026] [ 36.055026] [ 36.055026] Pid: 385, comm: udevd Not tainted 3.3.4-5.fc17.x86_64 #1 Bochs Bochs [ 36.055026] RIP: 0010:[8105dc40] [8105dc40] __do_softirq+0x70/0x1e0 [ 36.055026] RSP: 0018:88001f003ef0 EFLAGS: 0206 [ 36.055026] RAX: 88001f8a7fd8 RBX: 81a17240 RCX: 0001f0542108 [ 36.055026] RDX: RSI: 006f RDI: 0002 [ 36.055026] RBP: 88001f003f40 R08: R09: 81c64540 [ 36.055026] R10: 0400 R11: 0020 R12: 88001f003e68 [ 36.055026] R13: 815f439e R14: 88001f003f40 R15: 0046 [ 36.055026] FS: 7f14b7509840() GS:88001f00() knlGS: [ 36.055026] CS: 0010 DS: ES: CR0: 8005003b [ 36.055026] CR2: 7fa5e9e4 CR3: 1f80e000 CR4: 06f0 [ 36.055026] DR0: DR1: DR2: [ 36.055026] DR3: DR6: 0ff0 DR7: 0400 [ 36.055026] Process udevd (pid: 385, threadinfo 88001f8a6000, task 88001b218000) [ 36.055026] Stack: [ 36.055026] 8101ac19 88001f8a7fd8 88001f8a7fd8 880a [ 36.055026] 88001f014000 88001f8a7fd8 0046 0007 [ 36.055026] 0050 0001 88001f003f58 815f4d9c [ 36.055026] Call Trace: [ 36.055026] IRQ [ 36.055026] [815f4d9c] call_softirq+0x1c/0x30 [ 36.055026] [81015465] do_softirq+0x75/0xb0 [ 36.055026] [8105e055] irq_exit+0xb5/0xc0 [ 36.055026] [815f56ee]
Bug#688964: qemu-kvm: Fedora 17 guest hangs on boot with soft lockup in udevd
On 2012-09-27 20:43, Michael Tokarev wrote:
On 27.09.2012 22:28, Jan Kiszka wrote:
[]
--- a/hw/intel-hda.c
+++ b/hw/intel-hda.c
@@ -1107,6 +1107,9 @@ static void intel_hda_reset(DeviceState *dev)
DeviceState *qdev;
HDACodecDevice *cdev;
+if (d-msi) {
+msi_reset(d-pci);
+}
intel_hda_regs_reset(d);
d-wall_base_ns = qemu_get_clock_ns(vm_clock);
which is exactly about this hda thing. I'm CC'ing relevant
people here.
I suppose we are resetting the MSI configuration also in cases here
where only the HDA internals are supposed to be reset (when called from
intel_hda_set_g_ctl).
Hmm. I was looking at this code already (but i don't know the machinery
anyway). Here it is (I addedd two printfs in obvious places):
in intel_hda_reset
calling intel_hda_reset from intel_hda_set_g_ctl
in intel_hda_reset
(at this time it hangs in guest).
The following patch fixes it. Is it correct? :)
It looks ok to me.
Jan
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Corporate Competence Center Embedded Linux
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Bug#688964: qemu-kvm: Fedora 17 guest hangs on boot with soft lockup in udevd
On Thu, Sep 27, 2012 at 10:43:57PM +0400, Michael Tokarev wrote:
On 27.09.2012 22:28, Jan Kiszka wrote:
[]
--- a/hw/intel-hda.c
+++ b/hw/intel-hda.c
@@ -1107,6 +1107,9 @@ static void intel_hda_reset(DeviceState *dev)
DeviceState *qdev;
HDACodecDevice *cdev;
+if (d-msi) {
+msi_reset(d-pci);
+}
intel_hda_regs_reset(d);
d-wall_base_ns = qemu_get_clock_ns(vm_clock);
which is exactly about this hda thing. I'm CC'ing relevant
people here.
I suppose we are resetting the MSI configuration also in cases here
where only the HDA internals are supposed to be reset (when called from
intel_hda_set_g_ctl).
Hmm. I was looking at this code already (but i don't know the machinery
anyway). Here it is (I addedd two printfs in obvious places):
in intel_hda_reset
calling intel_hda_reset from intel_hda_set_g_ctl
in intel_hda_reset
(at this time it hangs in guest).
The following patch fixes it. Is it correct? :)
/mjt
diff --git a/hw/intel-hda.c b/hw/intel-hda.c
index e38861e..fdd7eeb 100644
--- a/hw/intel-hda.c
+++ b/hw/intel-hda.c
@@ -199,7 +199,7 @@ struct IntelHDAReg {
void (*rhandler)(IntelHDAState *d, const IntelHDAReg *reg);
};
-static void intel_hda_reset(DeviceState *dev);
+static void intel_hda_reset_dev(DeviceState *dev);
/* - */
@@ -500,7 +500,7 @@ static void intel_hda_notify_codecs(IntelHDAState *d,
uint32_t stream, bool runn
static void intel_hda_set_g_ctl(IntelHDAState *d, const IntelHDAReg *reg,
uint32_t old)
{
if ((d-g_ctl ICH6_GCTL_RESET) == 0) {
-intel_hda_reset(d-pci.qdev);
+intel_hda_reset_dev(d-pci.qdev);
}
}
@@ -1101,15 +1101,12 @@ static const MemoryRegionOps intel_hda_mmio_ops = {
/* - */
-static void intel_hda_reset(DeviceState *dev)
+static void intel_hda_reset_dev(DeviceState *dev)
{
IntelHDAState *d = DO_UPCAST(IntelHDAState, pci.qdev, dev);
DeviceState *qdev;
HDACodecDevice *cdev;
-if (d-msi) {
-msi_reset(d-pci);
-}
intel_hda_regs_reset(d);
d-wall_base_ns = qemu_get_clock_ns(vm_clock);
@@ -1122,6 +1119,15 @@ static void intel_hda_reset(DeviceState *dev)
intel_hda_update_irq(d);
}
+static void intel_hda_reset(DeviceState *dev)
+{
+IntelHDAState *d = DO_UPCAST(IntelHDAState, pci.qdev, dev);
+if (d-msi) {
+msi_reset(d-pci);
+}
+intel_hda_reset_dev(dev);
+}
+
static int intel_hda_init(PCIDevice *pci)
{
IntelHDAState *d = DO_UPCAST(IntelHDAState, pci, pci);
Looks good to me.
ACK for stable branch.
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Bug#688964: qemu-kvm: Fedora 17 guest hangs on boot with soft lockup in udevd
On 27.09.2012 23:32, Michael S. Tsirkin wrote: [] Looks good to me. I just sent another patch, now with proper S-o-b and description, which does the same but touches 2 less lines (by renaming the other half of the function), -- his is to be more like the 1.2+ version. The functionality is exactly the same. ACK for stable branch. /mjt -- To UNSUBSCRIBE, email to debian-bugs-dist-requ...@lists.debian.org with a subject of unsubscribe. Trouble? Contact listmas...@lists.debian.org
Bug#688964: qemu-kvm: Fedora 17 guest hangs on boot with soft lockup in udevd
On 09/27/2012 08:15 PM, Michael Tokarev wrote: Ok. I reproduced this, I _think_, and now I want some confirmation from you. This is my command line: QEMU_AUDIO_DRV=none qemu-kvm -nodefconfig -nodefaults -enable-kvm \ -monitor stdio -rtc base=utc \ -device piix3-usb-uhci,id=usb,bus=pci.0,addr=0x1.0x2 \ -m 512 -vga cirrus -cdrom Fedora-17-x86_64-Live-Desktop.iso \ -device intel-hda,id=sound0,bus=pci.0,addr=0x4 \ -device hda-duplex,id=sound0-codec0,bus=sound0.0,cad=0 leads to this in guest: ... Starting udev Wait for Complete Device Initialization... [4.123978] piix4_smbus :00:01.3: SMBus Host Controller at 0xb100, revision 0 [4.311473] microcode: AMD CPU family 0x6 not supported [4.355429] microcode: AMD CPU family 0x6 not supported [7.323032] ALSA sound/pci/hda/hda_intel.c:823 azx_get_response timeout, switching to polling mode: last cmd=0x000f [8.325018] ALSA sound/pci/hda/hda_intel.c:831 No response from codec, disabling MSI: last cmd=0x000f [ 36.055021] BUG: soft lockup - CPU#0 stuck for 22s! [udevd:385] Is it the issue you're seeing? Removing hda-duplex device lets it to work. Removing piix3-usb-uhci allows it to boot too. Even removing the explicit bus address from piix3-usb-uhci allow it to boot. Nikolai, please verify if this is the issue you're seeing, and please try without sound device. If this is the case, let's downgrade this bug from important to normal, since emulated sound devices aren't really of high priority in this context, and there should be easy workaround (to disable sound). I wasn't able to get a backtrace, unfortunately. It just isn't printed. Could I be missing some trick? However, removing the sound device did help. I'll try the patch you sent in another message next. Thank you. -- To UNSUBSCRIBE, email to debian-bugs-dist-requ...@lists.debian.org with a subject of unsubscribe. Trouble? Contact listmas...@lists.debian.org
Bug#688964: qemu-kvm: Fedora 17 guest hangs on boot with soft lockup in udevd
On 09/27/2012 10:40 PM, Nikolai Kondrashov wrote: Nikolai, please verify if this is the issue you're seeing, and please try without sound device. If this is the case, let's downgrade this bug from important to normal, since emulated sound devices aren't really of high priority in this context, and there should be easy workaround (to disable sound). I wasn't able to get a backtrace, unfortunately. It just isn't printed. Could I be missing some trick? However, removing the sound device did help. I'll try the patch you sent in another message next. I've just tried latest master of git://git.debian.org/git/collab-maint/qemu-kvm.git where you applied your patch and it works. Both with your command line and from virt-manager. Thank you very much for fixing it this fast :)! Could you please tag your last two dfsg releases, so it is easier to check them out next time? Thank you. Sincerely, Nick -- To UNSUBSCRIBE, email to debian-bugs-dist-requ...@lists.debian.org with a subject of unsubscribe. Trouble? Contact listmas...@lists.debian.org
Bug#688964: qemu-kvm: Fedora 17 guest hangs on boot with soft lockup in udevd
[Dropping the Cc list] On 27.09.2012 23:57, Nikolai Kondrashov wrote: On 09/27/2012 10:40 PM, Nikolai Kondrashov wrote: Nikolai, please verify if this is the issue you're seeing, and please try without sound device. If this is the case, let's downgrade this bug from important to normal, since emulated sound devices aren't really of high priority in this context, and there should be easy workaround (to disable sound). I wasn't able to get a backtrace, unfortunately. It just isn't printed. Could I be missing some trick? However, removing the sound device did help. Easiest way to get a backtrace is to add a serial console to guest (I used -serial file:out), set it up in grub (console=ttyS0), AND remove quiet parameter from kernel command line, together with rhgb. The quiet thing is the most frequently forgotten parameter. I'll try the patch you sent in another message next. I've just tried latest master of git://git.debian.org/git/collab-maint/qemu-kvm.git where you applied your patch and it works. Both with your command line and from virt-manager. OK, excellent! Thank you very much for fixing it this fast :)! It was really easy to find the stuff in between the 13 commits :) And Jan noted the right place as well, it is more his work than mine. Now, it isn't really clear when this fix will hit the debian archive (ie, will be released to debian). I understand it is annoying to have bugs like this, but I'm afraid to push even more work to the release team. Current freeze policy is to allow fixing only bugs with severity serious and up, and your does not qualify :) Could you please tag your last two dfsg releases, so it is easier to check them out next time? I tagged it the time when I uploaded them, but forgot to push. Note I changed the tag format to include package name too, since else the tags in qemu and qemu-kvm packages/repositories clashes with each other. Thanks for noticing this, and for verifying the fix! /mjt -- To UNSUBSCRIBE, email to debian-bugs-dist-requ...@lists.debian.org with a subject of unsubscribe. Trouble? Contact listmas...@lists.debian.org
Bug#688964: qemu-kvm: Fedora 17 guest hangs on boot with soft lockup in udevd
Control: retitle -1 emulated hda-intel does not work since 1.1.1 upstream release (linux guest hangs) Control: found -1 1.1.1+dfsg-1 Control: affects -1 qemu I tried a few other guests with the same command line, and all shows bad behavor. Debian wheezy kernel also hangs when loading hda-intel modules, and win7 guest BSODs at startup. Is intel-hda the default for libvirt now, or should it be explicitly enabled? If the former, we've a serious bug here, for sure. Retitling the bug accordingly, and trying to understand the defaults of libvirt... And sure thing, the same issue equally affects qemu too. Thanks, /mjt -- To UNSUBSCRIBE, email to debian-bugs-dist-requ...@lists.debian.org with a subject of unsubscribe. Trouble? Contact listmas...@lists.debian.org
