https://bugzilla.kernel.org/show_bug.cgi?id=206215 --- Comment #9 from kernel@xxxxxxxxxx --- Sean, for the record ... I did: git clone git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git @f5ae2ea6347a308cfe91f53b53682ce635497d0d git revert e751732486eb3f159089a64d1901992b1357e7cc Then I built and installed kernel: 5.5.0-rc6-revert-e751732486eb3f159089a64d1901992b1357e7cc+ #1 SMP Thu Jan 16 13:02:23 EST 2020 x86_64 x86_64 x86_64 GNU/Linux Guest is stable; no more "general protection fault". Here is the stack trace with your patch '0001-thread_info-Add-a-debug-hook-to-detect-FPU-changes-w.patch' [ 122.323347] ------------[ cut here ]------------ [ 122.323355] WARNING: CPU: 1 PID: 1132 at include/linux/thread_info.h:55 kernel_fpu_begin+0x6b/0xc0 [ 122.323356] Modules linked in: vhost_net vhost tap tun xfrm4_tunnel tunnel4 ipcomp xfrm_ipcomp esp4 ah4 af_key ebtable_filter ebtables ip6table_filter ip6_tables bridge stp llc rfkill xt_TCPMSS xt_tcpmss xt_nat iptable_nat nf_nat xt_DSCP iptable_mangle iptable_raw iptable_security nf_log_ipv4 nf_log_common xt_policy xt_LOG xt_multiport ipt_REJECT nf_reject_ipv4 xt_state xt_conntrack nf_conntrack nf_defrag_ipv6 nf_defrag_ipv4 iptable_filter intel_rapl_msr intel_rapl_common snd_hda_codec_hdmi x86_pkg_temp_thermal intel_powerclamp snd_hda_codec_realtek snd_hda_codec_generic coretemp ledtrig_audio kvm_intel snd_hda_intel sunrpc snd_intel_dspcfg kvm snd_hda_codec snd_hda_core irqbypass mei_wdt mei_hdcp snd_hwdep vfat crct10dif_pclmul snd_seq fat crc32_pclmul snd_seq_device ghash_clmulni_intel iTCO_wdt snd_pcm iTCO_vendor_support intel_cstate snd_timer intel_uncore snd pcspkr intel_rapl_perf mei_me soundcore i2c_i801 lpc_ich mei ata_generic pata_acpi tcp_bbr sch_fq ip_tables xfs libcrc32c i915 [ 122.323384] i2c_algo_bit drm_kms_helper crc32c_intel e1000e drm r8169 serio_raw video [ 122.323389] CPU: 1 PID: 1132 Comm: CPU 2/KVM Not tainted 5.5.0-rc6-thread_info-Add-a-debug-hook-to-detect-FPU-changes-w+ #1 [ 122.323390] Hardware name: CompuLab 0000000-00000/Intense-PC, BIOS IPC_2.2.400.5 X64 03/15/2018 [ 122.323392] RIP: 0010:kernel_fpu_begin+0x6b/0xc0 [ 122.323394] Code: f6 40 26 20 75 08 48 8b 10 80 e6 40 74 16 65 48 c7 05 d5 2b fe 48 00 00 00 00 c3 65 8a 05 c5 2b fe 48 eb c4 80 78 0c 00 74 02 <0f> 0b 48 83 c0 01 f0 80 08 40 65 48 8b 0c 25 c0 8b 01 00 0f 1f 44 [ 122.323395] RSP: 0018:ffffa69b80108308 EFLAGS: 00010202 [ 122.323396] RAX: ffff8992513ecd00 RBX: 0000000000000088 RCX: ffffdd96904487c0 [ 122.323397] RDX: 0000000000000000 RSI: ffff89925fa99b00 RDI: ffff89925fa99b00 [ 122.323397] RBP: ffffa69b801085b0 R08: ffffa69b801085c0 R09: ffffa69b80108370 [ 122.323398] R10: 0000000000000000 R11: 0000000000000bbe R12: 0000000000000bce [ 122.323399] R13: ffffa69b80108370 R14: 0000000000000000 R15: ffff89925121fbbe [ 122.323400] FS: 00007ff235b52700(0000) GS:ffff89927e240000(0000) knlGS:0000000000000000 [ 122.323401] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 122.323401] CR2: 00000000ffffffff CR3: 000000040b55e002 CR4: 00000000001626e0 [ 122.323402] Call Trace: [ 122.323404] <IRQ> [ 122.323409] gcmaes_crypt_by_sg.constprop.0+0x276/0x6c0 [ 122.323415] ? skb_clone_tx_timestamp+0x3c/0xa0 [ 122.323419] ? sch_direct_xmit+0x8b/0x310 [ 122.323423] ? esp4_err+0x120/0x120 [esp4] [ 122.323425] ? helper_rfc4106_encrypt+0x7c/0xa0 [ 122.323428] ? crypto_aead_encrypt+0x3c/0x60 [ 122.323429] ? crypto_aead_encrypt+0x3c/0x60 [ 122.323431] ? seqiv_aead_encrypt+0x13a/0x1d0 [ 122.323434] ? fib4_rule_action+0x61/0x70 [ 122.323436] ? fib4_rule_action+0x70/0x70 [ 122.323438] ? fib_rules_lookup+0x143/0x1a0 [ 122.323440] ? __fib_lookup+0x6b/0xb0 [ 122.323442] ? ip_route_output_key_hash_rcu+0x562/0x890 [ 122.323444] ? ip_route_output_key_hash+0x5e/0x80 [ 122.323445] ? __xfrm4_dst_lookup.isra.0+0x88/0x90 [ 122.323446] ? xfrm4_dst_lookup+0x2f/0x50 [ 122.323447] ? rt_add_uncached_list+0x4b/0x80 [ 122.323449] ? xfrm4_fill_dst+0xae/0xf0 [ 122.323450] ? crypto_aead_encrypt+0x3c/0x60 [ 122.323452] ? esp_output_tail+0x1e5/0x580 [esp4] [ 122.323454] ? esp_output+0x116/0x190 [esp4] [ 122.323457] ? xfrm_output_resume+0x431/0x4f0 [ 122.323464] ? nf_confirm+0xcb/0xf0 [nf_conntrack] [ 122.323466] ? __xfrm4_output+0x3f/0x70 [ 122.323467] ? xfrm4_output+0x3b/0xd0 [ 122.323468] ? xfrm4_udp_encap_rcv+0x190/0x190 [ 122.323470] ? ip_forward+0x36c/0x470 [ 122.323472] ? ip_defrag.cold+0x37/0x37 [ 122.323473] ? ip_rcv+0xbc/0xd0 [ 122.323475] ? ip_rcv_finish_core.isra.0+0x410/0x410 [ 122.323476] ? __netif_receive_skb_one_core+0x80/0x90 [ 122.323478] ? netif_receive_skb_internal+0x41/0xb0 [ 122.323479] ? nf_hook_slow+0x40/0xb0 [ 122.323480] ? netif_receive_skb+0x18/0xb0 [ 122.323486] ? br_pass_frame_up+0x133/0x150 [bridge] [ 122.323491] ? br_port_flags_change+0x40/0x40 [bridge] [ 122.323495] ? br_handle_frame_finish+0x16f/0x430 [bridge] [ 122.323497] ? enqueue_entity+0x10e/0x650 [ 122.323501] ? br_handle_frame_finish+0x430/0x430 [bridge] [ 122.323505] ? br_handle_frame+0x247/0x370 [bridge] [ 122.323506] ? enqueue_task_fair+0x8c/0x4e0 [ 122.323508] ? update_group_capacity+0x25/0x1e0 [ 122.323512] ? br_handle_frame_finish+0x430/0x430 [bridge] [ 122.323513] ? __netif_receive_skb_core+0x2db/0xf70 [ 122.323515] ? __netif_receive_skb_list_core+0x138/0x2e0 [ 122.323517] ? netif_receive_skb_list_internal+0x1cc/0x300 [ 122.323518] ? enqueue_task_fair+0x8c/0x4e0 [ 122.323520] ? kmem_cache_alloc+0x165/0x220 [ 122.323521] ? gro_normal_list.part.0+0x19/0x40 [ 122.323522] ? napi_complete_done+0x92/0x130 [ 122.323526] ? rtl8169_poll+0x5a9/0x640 [r8169] [ 122.323527] ? net_rx_action+0x148/0x3c0 [ 122.323530] ? rtl8169_interrupt+0xfd/0x1e0 [r8169] [ 122.323532] ? __do_softirq+0xee/0x2ff [ 122.323535] ? irq_exit+0xe9/0xf0 [ 122.323536] ? do_IRQ+0x55/0xe0 [ 122.323538] ? common_interrupt+0xf/0xf [ 122.323539] </IRQ> [ 122.323541] ? irq_entries_start+0x30/0x660 [ 122.323546] ? handle_external_interrupt_irqoff+0x7a/0x100 [kvm_intel] [ 122.323568] ? kvm_arch_vcpu_ioctl_run+0x995/0x1a60 [kvm] [ 122.323570] ? futex_wake+0x90/0x170 [ 122.323581] ? kvm_vcpu_ioctl+0x218/0x5c0 [kvm] [ 122.323584] ? __seccomp_filter+0x7b/0x670 [ 122.323585] ? signal_setup_done+0x82/0xa0 [ 122.323586] ? __fpu__restore_sig+0x436/0x500 [ 122.323588] ? do_vfs_ioctl+0x461/0x6d0 [ 122.323590] ? ksys_ioctl+0x5e/0x90 [ 122.323591] ? __x64_sys_ioctl+0x16/0x20 [ 122.323593] ? do_syscall_64+0x5b/0x1c0 [ 122.323595] ? entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 122.323597] ---[ end trace fffe8684d1d1c2f4 ]--- [ 122.323626] ------------[ cut here ]------------ [ 122.323644] WARNING: CPU: 1 PID: 1132 at arch/x86/kvm/x86.c:8206 kvm_arch_vcpu_ioctl_run+0x163e/0x1a60 [kvm] [ 122.323644] Modules linked in: vhost_net vhost tap tun xfrm4_tunnel tunnel4 ipcomp xfrm_ipcomp esp4 ah4 af_key ebtable_filter ebtables ip6table_filter ip6_tables bridge stp llc rfkill xt_TCPMSS xt_tcpmss xt_nat iptable_nat nf_nat xt_DSCP iptable_mangle iptable_raw iptable_security nf_log_ipv4 nf_log_common xt_policy xt_LOG xt_multiport ipt_REJECT nf_reject_ipv4 xt_state xt_conntrack nf_conntrack nf_defrag_ipv6 nf_defrag_ipv4 iptable_filter intel_rapl_msr intel_rapl_common snd_hda_codec_hdmi x86_pkg_temp_thermal intel_powerclamp snd_hda_codec_realtek snd_hda_codec_generic coretemp ledtrig_audio kvm_intel snd_hda_intel sunrpc snd_intel_dspcfg kvm snd_hda_codec snd_hda_core irqbypass mei_wdt mei_hdcp snd_hwdep vfat crct10dif_pclmul snd_seq fat crc32_pclmul snd_seq_device ghash_clmulni_intel iTCO_wdt snd_pcm iTCO_vendor_support intel_cstate snd_timer intel_uncore snd pcspkr intel_rapl_perf mei_me soundcore i2c_i801 lpc_ich mei ata_generic pata_acpi tcp_bbr sch_fq ip_tables xfs libcrc32c i915 [ 122.323664] i2c_algo_bit drm_kms_helper crc32c_intel e1000e drm r8169 serio_raw video [ 122.323669] CPU: 1 PID: 1132 Comm: CPU 2/KVM Tainted: G W 5.5.0-rc6-thread_info-Add-a-debug-hook-to-detect-FPU-changes-w+ #1 [ 122.323669] Hardware name: CompuLab 0000000-00000/Intense-PC, BIOS IPC_2.2.400.5 X64 03/15/2018 [ 122.323683] RIP: 0010:kvm_arch_vcpu_ioctl_run+0x163e/0x1a60 [kvm] [ 122.323685] Code: a8 f3 fe ff 41 f6 44 24 42 02 75 08 4c 89 e7 e8 e8 f3 fe ff 4c 89 e7 e8 20 7d fe ff 41 83 a4 24 60 26 00 00 fb e9 cb f2 ff ff <0f> 0b e9 8e f2 ff ff 31 db bf 07 00 00 00 48 89 de e8 cc 11 65 f6 [ 122.323685] RSP: 0018:ffffa69b80fcbd40 EFLAGS: 00010002 [ 122.323686] RAX: 0000000080004b00 RBX: 0000000000000000 RCX: ffff8992513ecd00 [ 122.323687] RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000000000000000 [ 122.323688] RBP: ffffa69b80fcbde0 R08: 0000000000000001 R09: 0000000000000000 [ 122.323688] R10: 0000000000000000 R11: 0000000000000000 R12: ffff899250a28000 [ 122.323689] R13: 0000000000000000 R14: ffff899250a28038 R15: ffffa69b81042320 [ 122.323690] FS: 00007ff235b52700(0000) GS:ffff89927e240000(0000) knlGS:0000000000000000 [ 122.323691] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 122.323691] CR2: 00000000ffffffff CR3: 000000040b55e002 CR4: 00000000001626e0 [ 122.323692] Call Trace: [ 122.323695] ? futex_wake+0x90/0x170 [ 122.323707] kvm_vcpu_ioctl+0x218/0x5c0 [kvm] [ 122.323709] ? __seccomp_filter+0x7b/0x670 [ 122.323710] ? signal_setup_done+0x82/0xa0 [ 122.323711] ? __fpu__restore_sig+0x436/0x500 [ 122.323713] do_vfs_ioctl+0x461/0x6d0 [ 122.323715] ksys_ioctl+0x5e/0x90 [ 122.323716] __x64_sys_ioctl+0x16/0x20 [ 122.323718] do_syscall_64+0x5b/0x1c0 [ 122.323720] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 122.323722] RIP: 0033:0x7ff2399bf34b [ 122.323723] Code: 0f 1e fa 48 8b 05 3d 9b 0c 00 64 c7 00 26 00 00 00 48 c7 c0 ff ff ff ff c3 66 0f 1f 44 00 00 f3 0f 1e fa b8 10 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 0d 9b 0c 00 f7 d8 64 89 01 48 [ 122.323724] RSP: 002b:00007ff235b51698 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 122.323725] RAX: ffffffffffffffda RBX: 000056321fab4f50 RCX: 00007ff2399bf34b [ 122.323726] RDX: 0000000000000000 RSI: 000000000000ae80 RDI: 000000000000001b [ 122.323726] RBP: 00007ff23534f000 R08: 000056321d5ac390 R09: 000056321da50d40 [ 122.323727] R10: 000056321f960760 R11: 0000000000000246 R12: 000056321fad7770 [ 122.323727] R13: 000056321fab4f50 R14: 00007ffdb09a9730 R15: 000056321da2de80 [ 122.323729] ---[ end trace fffe8684d1d1c2f5 ]--- -- You are receiving this mail because: You are watching the assignee of the bug.
