Hello On Sun, Jun 17, 2007 at 05:27:25PM +0200, Michael Hanselmann wrote: > I reproduced it with vanilla-2.6.21.5, vanilla-2.6.22-rc5 and current > KVM git. Architecture is x86_64. GCC version is "gcc (GCC) 3.4.6 (Gentoo > Hardened 3.4.6-r2, ssp-3.4.6-1.0, pie-8.7.10)".
I've got a similiar backtrace, but well without any PANIC. I can reproduce it on vanilla-2.6.21.1 and .5 (I didn't check the versions between). But it worked once with a 2.6.20.1 and even with 2.6.19. My machine is a HP Compaq dc5750 with a AMD Athlon(tm) 64 X2 Dual Core Processor 4600+ CPU in it. It's fully svm capable and like I already mentioned, worked on earlier versions of the Kernel. Der Kernel is x86_64 and my gcc is: gcc (GCC) 4.1.2 (Gentoo 4.1.2). I also tried version 4.1.1 of gcc. My backtrace in 2.6.21.1: [ 141.850341] general protection fault: 0000 [1] PREEMPT SMP [ 141.850622] CPU 0 [ 141.850768] Modules linked in: kvm_amd kvm [ 141.851006] Pid: 6475, comm: modprobe Not tainted 2.6.21.1 #1 [ 141.851195] RIP: 0010:[<ffffffff8801013a>] [<ffffffff8801013a>] :kvm_amd:svm_hardware_enable+0x91/0xc6 [ 141.851477] RSP: 0000:ffff8100a324fdf8 EFLAGS: 00010006 [ 141.851657] RAX: 0000000000001d01 RBX: 0000000000000040 RCX: 00000000c0000080 [ 141.851869] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffffffff88011278 [ 141.852082] RBP: ffff81009fea61c0 R08: ffff8100bd4b2e13 R09: 000000000009cb65 [ 141.852292] R10: 0000000000000000 R11: 0000000000000001 R12: ffffffff880100a9 [ 141.852504] R13: ffff8100b5bb9438 R14: ffffc2000005fc70 R15: ffffc2000005d000 [ 141.852717] FS: 00002afeeaaf2ae0(0000) GS:ffffffff806e8000(0000) knlGS:0000000000000000 [ 141.852944] CS: 0010 DS: 0000 ES: 0000 CR0: 000000008005003b [ 141.853132] CR2: 00002afeea6ba000 CR3: 00000000b49a9000 CR4: 00000000000006e0 [ 141.853344] Process modprobe (pid: 6475, threadinfo ffff8100a324e000, task ffff8100b6b078a0) [ 141.853577] Stack: ffff806fa0000080 000000000000ffff ffffffff880100a9 0000000000000000 [ 141.853933] 0000000000000000 ffffffff80238f9d 0000000000000000 ffffffff88012980 [ 141.854252] ffffffff88012980 ffffffff88002537 ffff8100b5bb9000 ffffffff88012980 [ 141.854486] Call Trace: [ 141.854709] [<ffffffff880100a9>] :kvm_amd:svm_hardware_enable+0x0/0xc6 [ 141.854915] [<ffffffff80238f9d>] on_each_cpu+0x27/0x56 [ 141.855101] [<ffffffff88002537>] :kvm:kvm_init_arch+0x87/0x159 [ 141.855294] [<ffffffff80250681>] sys_init_module+0x1513/0x1673 [ 141.855488] [<ffffffff802096de>] system_call+0x7e/0x83 [ 141.855667] [ 141.855782] [ 141.855782] Code: 0f 30 48 8b 7d 20 e8 08 ca 24 f8 48 8b 7d 20 48 89 c3 c1 e3 [ 141.856681] RIP [<ffffffff8801013a>] :kvm_amd:svm_hardware_enable+0x91/0xc6 [ 141.856922] RSP <ffff8100a324fdf8> [ 141.857075] note: modprobe[6475] exited with preempt_count 1 [ 141.857283] BUG: scheduling while atomic: modprobe/0x10000001/6475 [ 141.857478] [ 141.857478] Call Trace: [ 141.857729] [<ffffffff8053bb90>] __sched_text_start+0x60/0x7f2 [ 141.857922] [<ffffffff8022ba3f>] __wake_up_common+0x3e/0x68 [ 141.858111] [<ffffffff8022c02d>] __wake_up+0x38/0x4f [ 141.858289] [<ffffffff8022f061>] __cond_resched+0x1c/0x44 [ 141.858474] [<ffffffff8053cb99>] cond_resched+0x2e/0x39 [ 141.858658] [<ffffffff802656af>] unmap_vmas+0x5e9/0x774 [ 141.858842] [<ffffffff802691ac>] exit_mmap+0x85/0x121 [ 141.859022] [<ffffffff80231cdd>] mmput+0x2c/0x9e [ 141.859197] [<ffffffff802371e0>] do_exit+0x20d/0x818 [ 141.859377] [<ffffffff8020b0af>] kernel_math_error+0x0/0x90 [ 141.859381] [<ffffffff8020bec1>] do_general_protection+0xfe/0x107 [ 141.859387] [<ffffffff880100a9>] :kvm_amd:svm_hardware_enable+0x0/0xc6 [ 141.859391] [<ffffffff8053e5ed>] error_exit+0x0/0x84 [ 141.859395] [<ffffffff880100a9>] :kvm_amd:svm_hardware_enable+0x0/0xc6 [ 141.859400] [<ffffffff8801013a>] :kvm_amd:svm_hardware_enable+0x91/0xc6 [ 141.859405] [<ffffffff880100bc>] :kvm_amd:svm_hardware_enable+0x13/0xc6 [ 141.859409] [<ffffffff880100a9>] :kvm_amd:svm_hardware_enable+0x0/0xc6 [ 141.859412] [<ffffffff80238f9d>] on_each_cpu+0x27/0x56 [ 141.859418] [<ffffffff88002537>] :kvm:kvm_init_arch+0x87/0x159 [ 141.859422] [<ffffffff80250681>] sys_init_module+0x1513/0x1673 [ 141.859426] [<ffffffff802096de>] system_call+0x7e/0x83 [ 141.859428] [ 141.859502] BUG: scheduling while atomic: modprobe/0x00000001/6475 [ 141.859504] [ 141.859504] Call Trace: [ 141.859507] [<ffffffff8053bb90>] __sched_text_start+0x60/0x7f2 [ 141.859511] [<ffffffff8020ac39>] dump_trace+0x25a/0x28d [ 141.859515] [<ffffffff8053de5f>] __down+0xe8/0x100 [ 141.859518] [<ffffffff8022e88a>] default_wake_function+0x0/0xe [ 141.859522] [<ffffffff8053dad3>] __down_failed+0x35/0x3a [ 141.859525] [<ffffffff8053e502>] lock_kernel+0x25/0x29 [ 141.859532] [<ffffffff8028bd98>] __posix_lock_file_conf+0x65/0x3c1 [ 141.859536] [<ffffffff8028cc68>] locks_remove_posix+0x9d/0xc0 [ 141.859540] [<ffffffff80280241>] generic_shutdown_super+0xa0/0xf4 [ 141.859544] [<ffffffff8027cfe4>] filp_close+0x55/0x65 [ 141.859547] [<ffffffff80235feb>] put_files_struct+0x68/0xce [ 141.859551] [<ffffffff80237221>] do_exit+0x24e/0x818 [ 141.859554] [<ffffffff8020b0af>] kernel_math_error+0x0/0x90 [ 141.859558] [<ffffffff8020bec1>] do_general_protection+0xfe/0x107 [ 141.859563] [<ffffffff880100a9>] :kvm_amd:svm_hardware_enable+0x0/0xc6 [ 141.859567] [<ffffffff8053e5ed>] error_exit+0x0/0x84 [ 141.859571] [<ffffffff880100a9>] :kvm_amd:svm_hardware_enable+0x0/0xc6 [ 141.859576] [<ffffffff8801013a>] :kvm_amd:svm_hardware_enable+0x91/0xc6 [ 141.859580] [<ffffffff880100bc>] :kvm_amd:svm_hardware_enable+0x13/0xc6 [ 141.859585] [<ffffffff880100a9>] :kvm_amd:svm_hardware_enable+0x0/0xc6 [ 141.859588] [<ffffffff80238f9d>] on_each_cpu+0x27/0x56 [ 141.859594] [<ffffffff88002537>] :kvm:kvm_init_arch+0x87/0x159 [ 141.859598] [<ffffffff80250681>] sys_init_module+0x1513/0x1673 [ 141.859602] [<ffffffff802096de>] system_call+0x7e/0x83 [ 141.859604] [ 141.872543] BUG: scheduling while atomic: modprobe/0x00000001/6475 [ 141.872545] [ 141.872546] Call Trace: [ 141.872549] [<ffffffff8053bb90>] __sched_text_start+0x60/0x7f2 [ 141.872554] [<ffffffff8053de5f>] __down+0xe8/0x100 [ 141.872557] [<ffffffff8022e88a>] default_wake_function+0x0/0xe [ 141.872561] [<ffffffff8053dad3>] __down_failed+0x35/0x3a [ 141.872564] [<ffffffff8053e502>] lock_kernel+0x25/0x29 [ 141.872568] [<ffffffff8028bd98>] __posix_lock_file_conf+0x65/0x3c1 [ 141.872572] [<ffffffff8028cc68>] locks_remove_posix+0x9d/0xc0 [ 141.872576] [<ffffffff80280241>] generic_shutdown_super+0xa0/0xf4 [ 141.872579] [<ffffffff8027cfe4>] filp_close+0x55/0x65 [ 141.872583] [<ffffffff80235feb>] put_files_struct+0x68/0xce [ 141.872587] [<ffffffff80237221>] do_exit+0x24e/0x818 [ 141.872591] [<ffffffff8020b0af>] kernel_math_error+0x0/0x90 [ 141.872594] [<ffffffff8020bec1>] do_general_protection+0xfe/0x107 [ 141.872599] [<ffffffff880100a9>] :kvm_amd:svm_hardware_enable+0x0/0xc6 [ 141.872603] [<ffffffff8053e5ed>] error_exit+0x0/0x84 [ 141.872607] [<ffffffff880100a9>] :kvm_amd:svm_hardware_enable+0x0/0xc6 [ 141.872613] [<ffffffff8801013a>] :kvm_amd:svm_hardware_enable+0x91/0xc6 [ 141.872617] [<ffffffff880100bc>] :kvm_amd:svm_hardware_enable+0x13/0xc6 [ 141.872622] [<ffffffff880100a9>] :kvm_amd:svm_hardware_enable+0x0/0xc6 [ 141.872626] [<ffffffff80238f9d>] on_each_cpu+0x27/0x56 [ 141.872631] [<ffffffff88002537>] :kvm:kvm_init_arch+0x87/0x159 [ 141.872635] [<ffffffff80250681>] sys_init_module+0x1513/0x1673 [ 141.872640] [<ffffffff802096de>] system_call+0x7e/0x83 [ 141.872642] And with 2.6.21.5: [ 96.999724] general protection fault: 0000 [1] PREEMPT SMP [ 97.000007] CPU 0 [ 97.000152] Modules linked in: kvm_amd kvm [ 97.000391] Pid: 6177, comm: modprobe Not tainted 2.6.21.5 #1 [ 97.000583] RIP: 0010:[<ffffffff8801013a>] [<ffffffff8801013a>] :kvm_amd:svm_hardware_enable+0x91/0xc6 [ 97.000867] RSP: 0000:ffff8100ba0c5df8 EFLAGS: 00010006 [ 97.001049] RAX: 0000000000001d01 RBX: 0000000000000040 RCX: 00000000c0000080 [ 97.001262] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffffffff88011278 [ 97.001475] RBP: ffff8100bba53700 R08: ffff8100bd4b2e13 R09: 00000000000b89db [ 97.001688] R10: 0000000000000000 R11: 0000000000000001 R12: ffffffff880100a9 [ 97.001902] R13: ffff8100bba4d438 R14: ffffc2000005fca8 R15: ffffc2000005d000 [ 97.002117] FS: 00002b3954247ae0(0000) GS:ffffffff806e8000(0000) knlGS:0000000000000000 [ 97.002346] CS: 0010 DS: 0000 ES: 0000 CR0: 000000008005003b [ 97.002534] CR2: 0000000000508c28 CR3: 00000000bc5bd000 CR4: 00000000000006e0 [ 97.002747] Process modprobe (pid: 6177, threadinfo ffff8100ba0c4000, task ffff8100ba526b20) [ 97.002982] Stack: ffff806fa0000080 000000000000ffff ffffffff880100a9 0000000000000000 [ 97.003341] 0000000000000000 ffffffff80238f35 0000000000000000 ffffffff88012980 [ 97.003660] ffffffff88012980 ffffffff88002541 ffff8100bba4d000 ffffffff88012980 [ 97.003896] Call Trace: [ 97.004118] [<ffffffff880100a9>] :kvm_amd:svm_hardware_enable+0x0/0xc6 [ 97.004325] [<ffffffff80238f35>] on_each_cpu+0x27/0x56 [ 97.004511] [<ffffffff88002541>] :kvm:kvm_init_arch+0x87/0x159 [ 97.004707] [<ffffffff80250669>] sys_init_module+0x1510/0x1670 [ 97.004901] [<ffffffff802096de>] system_call+0x7e/0x83 [ 97.005081] [ 97.005196] [ 97.005197] Code: 0f 30 48 8b 7d 20 e8 b0 c9 24 f8 48 8b 7d 20 48 89 c3 c1 e3 [ 97.006102] RIP [<ffffffff8801013a>] :kvm_amd:svm_hardware_enable+0x91/0xc6 [ 97.006345] RSP <ffff8100ba0c5df8> [ 97.006498] note: modprobe[6177] exited with preempt_count 1 [ 97.006705] BUG: scheduling while atomic: modprobe/0x10000001/6177 [ 97.006902] [ 97.006902] Call Trace: [ 97.007153] [<ffffffff8053bc20>] __sched_text_start+0x60/0x7f2 [ 97.007348] [<ffffffff8022b9d7>] __wake_up_common+0x3e/0x68 [ 97.007537] [<ffffffff8022bfc5>] __wake_up+0x38/0x4f [ 97.007716] [<ffffffff8022eff9>] __cond_resched+0x1c/0x44 [ 97.007903] [<ffffffff8053cc27>] cond_resched+0x2e/0x39 [ 97.008087] [<ffffffff80265625>] unmap_vmas+0x5e9/0x774 [ 97.008271] [<ffffffff80269131>] exit_mmap+0x85/0x121 [ 97.008452] [<ffffffff80231c75>] mmput+0x2c/0x9e [ 97.008624] [<ffffffff80237176>] do_exit+0x20d/0x818 [ 97.008803] [<ffffffff8020b080>] kernel_math_error+0x0/0x90 [ 97.009003] [<ffffffff8020be92>] do_general_protection+0xfe/0x107 [ 97.009008] [<ffffffff880100a9>] :kvm_amd:svm_hardware_enable+0x0/0xc6 [ 97.009013] [<ffffffff8053e67d>] error_exit+0x0/0x84 [ 97.009017] [<ffffffff880100a9>] :kvm_amd:svm_hardware_enable+0x0/0xc6 [ 97.009021] [<ffffffff8801013a>] :kvm_amd:svm_hardware_enable+0x91/0xc6 [ 97.009025] [<ffffffff880100bc>] :kvm_amd:svm_hardware_enable+0x13/0xc6 [ 97.009030] [<ffffffff880100a9>] :kvm_amd:svm_hardware_enable+0x0/0xc6 [ 97.009032] [<ffffffff80238f35>] on_each_cpu+0x27/0x56 [ 97.009038] [<ffffffff88002541>] :kvm:kvm_init_arch+0x87/0x159 [ 97.009042] [<ffffffff80250669>] sys_init_module+0x1510/0x1670 [ 97.009045] [<ffffffff802096de>] system_call+0x7e/0x83 [ 97.009047] Yours sincerely, René Nussbaumer -- Written on a Gentoo Linux system by René http://www.forkbomb.ch «Das Leben ist hart. Forkbomb ist härter.», (c) 2004 by Frank.
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