Re: GPF on modprobe kvm-amd

[Avi Kivity <avi@redhat.com>]

(adding cc)

Joerg, all I can make of it is that svm is enabled on one cpu but not on 
the other.  Can you help here?

nuitari@melchior.nuitari.net wrote:
> This is with kvm-81
> I'm getting a kernel panic when I modprobe kvm-amd
>
> It used to work until I had to use the CMOS jumper to boot.
> The motherboard is an Asus M3N78 PRO
> The CPU is an AMD Phenom 9950 Black Edition
>
> Here are the steps I've already tried:
>  - Checking that virtualization is enabled in the BIOS
>  - Updating the BIOS
>  - Restoring the defaults of the BIOS
>  - Downgrading the BIOS
>  - Trying various versions of kvm
>  - Trying various linux kernel versions
>  - Trying various vcore settings
>  - Enabling/Disabling Cool & Quiet and AMD C1E
>  - Tried a known good kernel and modules combo
>  - Interrupting the boot process to only have udev as a process, and 
> killing it.
>  - Not having any other modules loaded
>
> What I plan to try:
>  - Updating to 2.6.28 and kvm-82
>  - Tranfering the nvram from an identical motherboard I own to the
>    problematic one, using /dev/nvram
>
> Here are the traces
> [   36.870419] general protection fault: 0000 [1] PREEMPT SMP
> [   36.870579] CPU 0
> [   36.870667] Modules linked in: kvm_amd(+) kvm nvidia(P) snd_hda_intel
> [   36.870893] Pid: 0, comm: swapper Tainted: P          
> 2.6.27-gentoo-r7 #4
> [   36.870955] RIP: 0010:[<ffffffffa07e7f47>]  [<ffffffffa07e7f47>] 
> svm_hardware_enable+0x87/0xf0 [kvm_amd]
> [   36.871070] RSP: 0018:ffffffff808d9f28  EFLAGS: 00010006
> [   36.871130] RAX: 0000000000001d01 RBX: 0000000000000040 RCX: 
> 00000000c0000080
> [   36.871193] RDX: 0000000000000000 RSI: ffff88021c41c9c0 RDI: 
> 0000000000000000
> [   36.871255] RBP: ffffffff808d9f48 R08: 0000000000000000 R09: 
> 0000000000000000
> [   36.871317] R10: 0000000000000000 R11: ffffffff80869e88 R12: 
> ffff88021e843cc0
> [   36.871379] R13: ffff88021e843ce8 R14: 0000000000000000 R15: 
> 0000000000000000
> [   36.871413] FS:  00007fbabbbec6f0(0000) GS:ffffffff80863340(0000) 
> knlGS:0000000000000000
> [   36.871413] CS:  0010 DS: 0018 ES: 0018 CR0: 000000008005003b
> [   36.871413] CR2: 00007fbabbc22000 CR3: 0000000000201000 CR4: 
> 00000000000006e0
> [   36.871413] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 
> 0000000000000000
> [   36.871413] DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 
> 0000000000000400
> [   36.871413] Process swapper (pid: 0, threadinfo ffffffff80868000, 
> task ffffffff80808340)
> [   36.871413] Stack:  880028036000007f ffffffff8025ffff 
> ffff880028038d20 0000000000000011
> [   36.871413]  ffffffff808d9f58 ffffffffa07c002e ffffffff808d9f68 
> ffffffffa07bceaf
> [   36.871413]  ffffffff808d9f98 ffffffff8026515b 0000000000000011 
> ffffffff808ae500
> [   36.871413] Call Trace:
> [   36.871413]  <IRQ>  [<ffffffff8025ffff>] ? 
> tick_broadcast_oneshot_control+0xff/0x130
> [   36.871413]  [<ffffffffa07c002e>] kvm_arch_hardware_enable+0xe/0x10 
> [kvm]
> [   36.871413]  [<ffffffffa07bceaf>] hardware_enable+0x2f/0x40 [kvm]
> [   36.871413]  [<ffffffff8026515b>] 
> generic_smp_call_function_interrupt+0x6b/0x160
> [   36.871413]  [<ffffffff8021e3f9>] 
> smp_call_function_interrupt+0x19/0x30
> [   36.871413]  [<ffffffff8020d0d6>] call_function_interrupt+0x66/0x70
> [   36.871413]  <EOI>  [<ffffffff80214232>] ? default_idle+0x42/0x50
> [   36.871413]  [<ffffffff80214348>] ? c1e_idle+0x38/0x100
> [   36.871413]  [<ffffffff8025ae51>] ? 
> atomic_notifier_call_chain+0x11/0x20
> [   36.871413]  [<ffffffff8020b496>] ? cpu_idle+0x56/0xc0
> [   36.871413]  [<ffffffff80642856>] ? rest_init+0x86/0x90
> [   36.871413]
> [   36.871413]
> [   36.871413] Code: 46 10 0f 01 45 e0 48 8b 45 e2 b9 80 00 00 c0 48 
> 83 c0 40 48 89 46 18 0f 32 48 c1 e2 20 89 c0 48 09 c2 89 d0 48 c1 ea 
> 20 80 cc 10 <0f> 30 48 ba 00 00 00 00 00 1e 00 00 48 03 56 20 48 b8 b7 
> 6d db
> [   36.871413] RIP  [<ffffffffa07e7f47>] svm_hardware_enable+0x87/0xf0 
> [kvm_amd]
> [   36.871413]  RSP <ffffffff808d9f28>
> [   36.871413] ---[ end trace 91fceceaf959d326 ]---
> [   36.871413] Kernel panic - not syncing: Aiee, killing interrupt 
> handler!
> [   36.871413] ------------[ cut here ]------------
> [   36.871413] WARNING: at kernel/smp.c:332 
> smp_call_function_mask+0x21c/0x230()
> [   36.871413] Modules linked in: kvm_amd(+) kvm nvidia(P) snd_hda_intel
> [   36.871413] Pid: 0, comm: swapper Tainted: P      D   
> 2.6.27-gentoo-r7 #4
> [   36.871413]
> [   36.871413] Call Trace:
> [   36.871413]  <IRQ>  [<ffffffff8023fb6f>] warn_on_slowpath+0x5f/0x90
> [   36.871413]  [<ffffffff8023feae>] ? __call_console_drivers+0x6e/0x90
> [   36.871413]  [<ffffffff8025a5e4>] ? up+0x34/0x50
> [   36.871413]  [<ffffffff8024049c>] ? release_console_sem+0x1dc/0x1f0
> [   36.871413]  [<ffffffff80264f6c>] smp_call_function_mask+0x21c/0x230
> [   36.871413]  [<ffffffff8021e380>] ? stop_this_cpu+0x0/0x30
> [   36.871413]  [<ffffffff806578c6>] ? printk+0x67/0x69
> [   36.871413]  [<ffffffff8026a8e4>] ? crash_kexec+0x74/0x100
> [   36.871413]  [<ffffffff8023feae>] ? __call_console_drivers+0x6e/0x90
> [   36.871413]  [<ffffffff80264faf>] smp_call_function+0x2f/0x70
> [   36.871413]  [<ffffffff8021e363>] native_smp_send_stop+0x23/0x40
> [   36.871413]  [<ffffffff806577ae>] panic+0xbe/0x16f
> [   36.871413]  [<ffffffff806578c6>] ? printk+0x67/0x69
> [   36.871413]  [<ffffffff806578c6>] ? printk+0x67/0x69
> [   36.871413]  [<ffffffff80243986>] do_exit+0x786/0x900
> [   36.871413]  [<ffffffff8020e3a5>] ? show_registers+0x95/0x2c0
> [   36.871413]  [<ffffffff8040ff7f>] ? do_unblank_screen+0xf/0x140
> [   36.871413]  [<ffffffff8020dc18>] oops_end+0x88/0x90
> [   36.871413]  [<ffffffff8020eade>] die+0x5e/0x90
> [   36.871413]  [<ffffffff8020f6d0>] do_general_protection+0x150/0x160
> [   36.871413]  [<ffffffff8065ab79>] error_exit+0x0/0x51
> [   36.871413]  [<ffffffffa07e7f47>] ? svm_hardware_enable+0x87/0xf0 
> [kvm_amd]
> [   36.871413]  [<ffffffffa07e7ed6>] ? svm_hardware_enable+0x16/0xf0 
> [kvm_amd]
> [   36.871413]  [<ffffffff8025ffff>] ? 
> tick_broadcast_oneshot_control+0xff/0x130
> [   36.871413]  [<ffffffffa07c002e>] kvm_arch_hardware_enable+0xe/0x10 
> [kvm]
> [   36.871413]  [<ffffffffa07bceaf>] hardware_enable+0x2f/0x40 [kvm]
> [   36.871413]  [<ffffffff8026515b>] 
> generic_smp_call_function_interrupt+0x6b/0x160
> [   36.871413]  [<ffffffff8021e3f9>] 
> smp_call_function_interrupt+0x19/0x30
> [   36.871413]  [<ffffffff8020d0d6>] call_function_interrupt+0x66/0x70
> [   36.871413]  <EOI>  [<ffffffff80214232>] ? default_idle+0x42/0x50
> [   36.871413]  [<ffffffff80214348>] ? c1e_idle+0x38/0x100
> [   36.871413]  [<ffffffff8025ae51>] ? 
> atomic_notifier_call_chain+0x11/0x20
> [   36.871413]  [<ffffffff8020b496>] ? cpu_idle+0x56/0xc0
> [   36.871413]  [<ffffffff80642856>] ? rest_init+0x86/0x90
> [   36.871413]
> [   36.871413] ---[ end trace 91fceceaf959d326 ]---
>
> Here is the hexdump of /dev/nvram for the mobo that works:
> diskgrinder ~ # hexdump /dev/nvram
> 0000000 0000 ec00 0200 8007 c002 2fff f62f d7ef
> 0000010 0000 0000 0000 0000 0000 0010 a400 ff95
> 0000020 9808 ffc0 ff20 fee7 ecf7 ff57 077d d1bf
> 0000030 13f0 8a7b 2877 d9cd af11 cf5f 5d7f fffc
> 0000040 f799 6b29 0bfc 0e8f e25e bc65 faf7 ff9f
> 0000050 81b2 fcfe 40fd 0122 f488 dc01 3f05 d2ff
> 0000060 ffff 7fff 25ff edde fffe f9ff 22ab 0083
> 0000070 2000
> 0000072
>
> and here is the one that doesn't work:
> gandalf ~ # hexdump /dev/nvram
> 0000000 0000 f840 0200 800b c002 2fff 472f bfcf
> 0000010 0000 0000 0000 0000 0000 0000 0000 0000
> 0000020 b905 ffc0 dd20 3be3 ffac fbff 07e6 d1bb
> 0000030 13f0 88e9 08f7 d9ed 7f11 ef73 fd3b 4bb4
> 0000040 7f9f ea7f 0ffe 0e8e e77a bc35 ef7f 5eef
> 0000050 03ba ff3e 60df 1026 f482 dc01 f705 ffcb
> 0000060 df7d fdfc f7df cff2 ef5e fbfd 2097 00b6
> 0000070 2000
> 0000072
>
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-- 
error compiling committee.c: too many arguments to function