Hi I report this crash that happened on ARM64 in the host kernel when running a workload in a virtual machine. The crash is not reproducible. Kernel 4.18.12, board MacchiatoBin. The call sequence that leads up to the crash: find_busiest_group -> update_sd_lb_stats -> update_sg_lb_stats -> for_each_cpu_and -> cpumask_next_and -> find_next_and_bit. The crash happened because the first argument to find_next_and_bit is invalid pointer 0x2. Mikulas [75476.680487] Unable to handle kernel NULL pointer dereference at virtual address 0000000000000003 [75476.680498] Unable to handle kernel NULL pointer dereference at virtual address 0000000000000040 [75476.680521] Unable to handle kernel NULL pointer dereference at virtual address 0000000000000002 [75476.680522] Mem abort info: [75476.680524] ESR = 0x96000005 [75476.680526] Exception class = DABT (current EL), IL = 32 bits [75476.680528] SET = 0, FnV = 0 [75476.680529] EA = 0, S1PTW = 0 [75476.680530] Data abort info: [75476.680531] ISV = 0, ISS = 0x00000005 [75476.680532] CM = 0, WnR = 0 [75476.680536] user pgtable: 4k pages, 39-bit VAs, pgdp = 0000000005d2fe31 [75476.680537] [0000000000000002] pgd=0000000000000000, pud=0000000000000000 [75476.680542] Internal error: Oops: 96000005 [#1] PREEMPT SMP [75476.680544] Modules linked in: vhost_net vhost tun bridge stp llc udlfb syscopyarea sysfillrect sysimgblt fb_sys_fops fb font autofs4 hid_generic usbhid hid binfmt_misc ip6t_REJECT nf_reject_ipv6 nf_conntrack_ipv6 nf_defrag_ipv6 ip6table_filter ip6_tables ipt_MASQUERADE xt_nat iptable_nat nf_nat_ipv4 iptable_mangle xt_TCPMSS nf_conntrack_ipv4 nf_defrag_ipv4 ipt_REJECT nf_reject_ipv4 xt_tcpudp xt_conntrack xt_multiport iptable_filter ip_tables x_tables pppoe pppox af_packet ppp_generic slhc nls_utf8 nls_cp852 vfat fat snd_usb_audio snd_hwdep snd_usbmidi_lib snd_rawmidi snd_pcm snd_timer snd soundcore nf_nat_ftp nf_conntrack_ftp nf_nat nf_conntrack ftdi_sio usbserial ipv6 aes_ce_blk crypto_simd cryptd aes_ce_cipher crc32_ce ghash_ce gf128mul aes_arm64 sha2_ce sha256_arm64 sha1_ce sha1_generic efivars [75476.680639] xhci_plat_hcd xhci_hcd usbcore usb_common mvpp2 phylink unix [75476.680652] CPU: 2 PID: 9993 Comm: CPU 2/KVM Not tainted 4.18.12 #1 [75476.680653] Hardware name: Marvell Armada 8040 MacchiatoBin/Armada 8040 MacchiatoBin, BIOS EDK II Jul 30 2018 [75476.680656] pstate: 20000085 (nzCv daIf -PAN -UAO) [75476.680667] pc : find_next_and_bit+0xc/0x70 [75476.680671] lr : cpumask_next_and+0x20/0x28 [75476.680672] sp : ffffffc12c527690 [75476.680673] x29: ffffffc12c527690 x28: ffffffc12c527728 [75476.680677] x27: 00000000ffffffff x26: fffffffffffffff8 [75476.680681] x25: ffffffc13b02f380 x24: 0000000000000000 [75476.680684] x23: ffffff80088696e4 x22: 0000000000000000 [75476.680687] x21: ffffffc13b02f3a0 x20: ffffffc12c5278d8 [75476.680690] x19: ffffff8008859c80 x18: 0000000000000400 [75476.680693] x17: 0000000000000000 x16: 0000000000000000 [75476.680696] x15: 0000000000000400 x14: 0000000000000400 [75476.680699] x13: 0000000000000400 x12: 0000000000000001 [75476.680702] x11: 000000000000027b x10: ffffffc13ff9ce88 [75476.680705] x9 : ffffffc13b025e00 x8 : ffffffc13b025e00 [75476.680708] x7 : 000044a5438be2c8 x6 : 0000000000000001 [75476.680711] x5 : 0000000000000000 x4 : 0000000000000000 [75476.680714] x3 : 0000000000000000 x2 : 0000000000000004 [75476.680717] x1 : ffffffc13ff9ce88 x0 : 0000000000000002 [75476.680721] Process CPU 2/KVM (pid: 9993, stack limit = 0x00000000f6dd03c5) [75476.680722] Call trace: [75476.680725] find_next_and_bit+0xc/0x70 [75476.680728] find_busiest_group+0x128/0x938 [75476.680730] load_balance+0x148/0x848 [75476.680732] pick_next_task_fair+0x1d4/0x568 [75476.680734] __schedule+0xe8/0x4b0 [75476.680736] schedule+0x38/0xa0 [75476.680739] kvm_vcpu_block+0x88/0x180 [75476.680742] kvm_handle_wfx+0x80/0xb8 [75476.680744] handle_exit+0x138/0x1b8 [75476.680746] kvm_arch_vcpu_ioctl_run+0x2b0/0x5e8 [75476.680748] kvm_vcpu_ioctl+0x330/0x7a8 [75476.680751] do_vfs_ioctl+0xa4/0x7e8 [75476.680754] ksys_ioctl+0x78/0xa8 [75476.680756] sys_ioctl+0xc/0x18 [75476.680758] el0_svc_naked+0x30/0x34 [75476.680761] Code: d65f03c0 eb03005f 54000329 d346fc64 (f8647806) [75476.680763] ---[ end trace 19bbd785127be262 ]--- [75476.680766] note: CPU 2/KVM[9993] exited with preempt_count 1 [75476.680802] Unable to handle kernel NULL pointer dereference at virtual address 0000000000000002 [75476.680803] Mem abort info: [75476.680804] ESR = 0x96000005 [75476.680805] Exception class = DABT (current EL), IL = 32 bits [75476.680807] SET = 0, FnV = 0 [75476.680808] EA = 0, S1PTW = 0 [75476.680809] Data abort info: [75476.680810] ISV = 0, ISS = 0x00000005 [75476.680811] CM = 0, WnR = 0 [75476.680813] user pgtable: 4k pages, 39-bit VAs, pgdp = 0000000005d2fe31 [75476.680814] [0000000000000002] pgd=0000000000000000, pud=0000000000000000 [75476.680818] Internal error: Oops: 96000005 [#2] PREEMPT SMP [75476.680819] Modules linked in: vhost_net vhost tun bridge stp llc udlfb syscopyarea sysfillrect sysimgblt fb_sys_fops fb font autofs4 hid_generic usbhid hid binfmt_misc ip6t_REJECT nf_reject_ipv6 nf_conntrack_ipv6 nf_defrag_ipv6 ip6table_filter ip6_tables ipt_MASQUERADE xt_nat iptable_nat nf_nat_ipv4 iptable_mangle xt_TCPMSS nf_conntrack_ipv4 nf_defrag_ipv4 ipt_REJECT nf_reject_ipv4 xt_tcpudp xt_conntrack xt_multiport iptable_filter ip_tables x_tables pppoe pppox af_packet ppp_generic slhc nls_utf8 nls_cp852 vfat fat snd_usb_audio snd_hwdep snd_usbmidi_lib snd_rawmidi snd_pcm snd_timer snd soundcore nf_nat_ftp nf_conntrack_ftp nf_nat nf_conntrack ftdi_sio usbserial ipv6 aes_ce_blk crypto_simd cryptd aes_ce_cipher crc32_ce ghash_ce gf128mul aes_arm64 sha2_ce sha256_arm64 sha1_ce sha1_generic efivars [75476.680889] xhci_plat_hcd xhci_hcd usbcore usb_common mvpp2 phylink unix [75476.680898] CPU: 2 PID: 17426 Comm: kworker/2:1 Tainted: G D 4.18.12 #1 [75476.680899] Hardware name: Marvell Armada 8040 MacchiatoBin/Armada 8040 MacchiatoBin, BIOS EDK II Jul 30 2018 [75476.680903] Workqueue: (null) (events_power_efficient) [75476.680907] pstate: 20000085 (nzCv daIf -PAN -UAO) [75476.680910] pc : find_next_and_bit+0xc/0x70 [75476.680912] lr : cpumask_next_and+0x20/0x28 [75476.680913] sp : ffffffc07f977a30 [75476.680914] x29: ffffffc07f977a30 x28: ffffffc07f977b88 [75476.680918] x27: 00000000ffffffff x26: fffffffffffffff8 [75476.680921] x25: ffffffc13b02f200 x24: 0000000000000000 [75476.680924] x23: ffffff80088696e4 x22: 0000000000000001 [75476.680927] x21: ffffffc13b02f220 x20: ffffffc07f977c78 [75476.680930] x19: ffffff8008859c80 x18: 0000000000000400 [75476.680933] x17: 0000000000000001 x16: 0000000000000019 [75476.680936] x15: 0000000000000400 x14: 0000000000000400 [75476.680939] x13: 0000000000000400 x12: 0000000000000000 [75476.680942] x11: 00000000000003dc x10: ffffffc13ff9ce88 [75476.680946] x9 : ffffffc13b025e00 x8 : 0000000000000020 [75476.680949] x7 : 0000000000000002 x6 : ffffffc13b02f220 [75476.680952] x5 : 000000000000000c x4 : 0000000000000000 [75476.680955] x3 : 0000000000000000 x2 : 0000000000000004 [75476.680958] x1 : ffffffc13ff9ce88 x0 : 0000000000000002 [75476.680961] Process kworker/2:1 (pid: 17426, stack limit = 0x0000000054b63590) [75476.680962] Call trace: [75476.680965] find_next_and_bit+0xc/0x70 [75476.680967] find_busiest_group+0x128/0x938 [75476.680969] load_balance+0x148/0x848 [75476.680971] pick_next_task_fair+0x1d4/0x568 [75476.680973] __schedule+0xe8/0x4b0 [75476.680975] schedule+0x38/0xa0 [75476.680977] worker_thread+0xc8/0x440 [75476.680980] kthread+0x124/0x128 [75476.680982] ret_from_fork+0x10/0x18 [75476.680984] Code: d65f03c0 eb03005f 54000329 d346fc64 (f8647806) [75476.680986] ---[ end trace 19bbd785127be263 ]--- [75476.680988] note: kworker/2:1[17426] exited with preempt_count 1 [75476.681008] WARNING: CPU: 2 PID: 17426 at kernel/rcu/tree_plugin.h:330 rcu_note_context_switch+0x28/0x3a0 [75476.681009] Modules linked in: vhost_net vhost tun bridge stp llc udlfb syscopyarea sysfillrect sysimgblt fb_sys_fops fb font autofs4 hid_generic usbhid hid binfmt_misc ip6t_REJECT nf_reject_ipv6 nf_conntrack_ipv6 nf_defrag_ipv6 ip6table_filter ip6_tables ipt_MASQUERADE xt_nat iptable_nat nf_nat_ipv4 iptable_mangle xt_TCPMSS nf_conntrack_ipv4 nf_defrag_ipv4 ipt_REJECT nf_reject_ipv4 xt_tcpudp xt_conntrack xt_multiport iptable_filter ip_tables x_tables pppoe pppox af_packet ppp_generic slhc nls_utf8 nls_cp852 vfat fat snd_usb_audio snd_hwdep snd_usbmidi_lib snd_rawmidi snd_pcm snd_timer snd soundcore nf_nat_ftp nf_conntrack_ftp nf_nat nf_conntrack ftdi_sio usbserial ipv6 aes_ce_blk crypto_simd cryptd aes_ce_cipher crc32_ce ghash_ce gf128mul aes_arm64 sha2_ce sha256_arm64 sha1_ce sha1_generic efivars [75476.681079] xhci_plat_hcd xhci_hcd usbcore usb_common mvpp2 phylink unix [75476.681087] CPU: 2 PID: 17426 Comm: kworker/2:1 Tainted: G D 4.18.12 #1 [75476.681089] Hardware name: Marvell Armada 8040 MacchiatoBin/Armada 8040 MacchiatoBin, BIOS EDK II Jul 30 2018 [75476.681092] Workqueue: (null) (events_power_efficient) [75476.681095] pstate: 20000085 (nzCv daIf -PAN -UAO) [75476.681098] pc : rcu_note_context_switch+0x28/0x3a0 [75476.681100] lr : rcu_note_context_switch+0x18/0x3a0 [75476.681101] sp : ffffffc07f977570 [75476.681102] x29: ffffffc07f977570 x28: ffffffc13b048000 [75476.681105] x27: 00000000ffffffff x26: 0000000000000000 [75476.681108] x25: ffffffc04bd71700 x24: ffffff80080eaebc [75476.681111] x23: ffffff800884b018 x22: ffffffc04bd71700 [75476.681114] x21: ffffff8008869828 x20: 0000000000000000 [75476.681117] x19: ffffffc04bd71700 x18: ffffff800887929c [75476.681120] x17: 0000000000000001 x16: 0000000000000019 [75476.681124] x15: ffffff8008879298 x14: 0000000000000000 [75476.681127] x13: ffffffc071dfb478 x12: ffffffc071dfb4a0 [75476.681130] x11: ffffffc071dfb531 x10: 0000000000000013 [75476.681133] x9 : 000000000000000c x8 : 00000000400c2000 [75476.681136] x7 : 0000000000210d00 x6 : ffffffc0440a0e60 [75476.681139] x5 : ffffff80080c3968 x4 : 0000000000000000 [75476.681142] x3 : 0000004137751000 x2 : 0000004137751000 [75476.681145] x1 : ffffff800885a858 x0 : 0000000000000001 [75476.681148] Call trace: [75476.681150] rcu_note_context_switch+0x28/0x3a0 [75476.681152] __schedule+0x70/0x4b0 [75476.681155] do_task_dead+0x44/0x48 [75476.681157] do_exit+0x644/0x8e8 [75476.681159] die+0x1b8/0x1c8 [75476.681161] die_kernel_fault+0x60/0x70 [75476.681163] __do_kernel_fault+0x94/0xb0 [75476.681165] do_page_fault+0x1e0/0x458 [75476.681167] do_translation_fault+0x64/0x70 [75476.681168] do_mem_abort+0x3c/0xd0 [75476.681170] el1_da+0x20/0x80 [75476.681172] find_next_and_bit+0xc/0x70 [75476.681174] find_busiest_group+0x128/0x938 [75476.681176] load_balance+0x148/0x848 [75476.681178] pick_next_task_fair+0x1d4/0x568 [75476.681180] __schedule+0xe8/0x4b0 [75476.681181] schedule+0x38/0xa0 [75476.681183] worker_thread+0xc8/0x440 [75476.681185] kthread+0x124/0x128 [75476.681187] ret_from_fork+0x10/0x18 [75476.681188] ---[ end trace 19bbd785127be264 ]--- [75476.681192] Unable to handle kernel NULL pointer dereference at virtual address 0000000000000040 [75476.681193] Mem abort info: [75476.681194] ESR = 0x96000005 [75476.681195] Exception class = DABT (current EL), IL = 32 bits [75476.681196] SET = 0, FnV = 0 [75476.681198] EA = 0, S1PTW = 0 [75476.681199] Data abort info: [75476.681200] ISV = 0, ISS = 0x00000005 [75476.681201] CM = 0, WnR = 0 [75476.681203] user pgtable: 4k pages, 39-bit VAs, pgdp = 0000000005d2fe31 [75476.681204] [0000000000000040] pgd=0000000000000000, pud=0000000000000000 [75476.681208] Internal error: Oops: 96000005 [#3] PREEMPT SMP [75476.681209] Modules linked in: vhost_net vhost tun bridge stp llc udlfb syscopyarea sysfillrect sysimgblt fb_sys_fops fb font autofs4 hid_generic usbhid hid binfmt_misc ip6t_REJECT nf_reject_ipv6 nf_conntrack_ipv6 nf_defrag_ipv6 ip6table_filter ip6_tables ipt_MASQUERADE xt_nat iptable_nat nf_nat_ipv4 iptable_mangle xt_TCPMSS nf_conntrack_ipv4 nf_defrag_ipv4 ipt_REJECT nf_reject_ipv4 xt_tcpudp xt_conntrack xt_multiport iptable_filter ip_tables x_tables pppoe pppox af_packet ppp_generic slhc nls_utf8 nls_cp852 vfat fat snd_usb_audio snd_hwdep snd_usbmidi_lib snd_rawmidi snd_pcm snd_timer snd soundcore nf_nat_ftp nf_conntrack_ftp nf_nat nf_conntrack ftdi_sio usbserial ipv6 aes_ce_blk crypto_simd cryptd aes_ce_cipher crc32_ce ghash_ce gf128mul aes_arm64 sha2_ce sha256_arm64 sha1_ce sha1_generic efivars [75476.681279] xhci_plat_hcd xhci_hcd usbcore usb_common mvpp2 phylink unix [75476.681287] CPU: 2 PID: 17426 Comm: kworker/2:1 Tainted: G D W 4.18.12 #1 [75476.681288] Hardware name: Marvell Armada 8040 MacchiatoBin/Armada 8040 MacchiatoBin, BIOS EDK II Jul 30 2018 [75476.681291] Workqueue: (null) (events_power_efficient) [75476.681294] pstate: 00000085 (nzcv daIf -PAN -UAO) [75476.681296] pc : set_next_entity+0x1c/0x130 [75476.681298] lr : pick_next_task_fair+0x4e8/0x568 [75476.681299] sp : ffffffc07f9774b0 [75476.681301] x29: ffffffc07f9774b0 x28: ffffffc13b048000 [75476.681304] x27: 00000000ffffffff x26: ffffffc13ffaac80 [75476.681307] x25: ffffffc04bd71bf0 x24: ffffffc13ffaad00 [75476.681310] x23: ffffff8008869638 x22: ffffffc04bd71700 [75476.681313] x21: ffffffc13ffaac80 x20: ffffffc13ffaad00 [75476.681316] x19: 0000000000000000 x18: 0000000000000400 [75476.681320] x17: 0000000000000001 x16: 0000000000000019 [75476.681323] x15: 0000000000000400 x14: 0000000000000400 [75476.681326] x13: 0000000000000400 x12: 0000000000000000 [75476.681329] x11: 00000000000003dd x10: 0000000000000001 [75476.681332] x9 : 0000000000000000 x8 : 0000000000000000 [75476.681335] x7 : 000000000038b92b x6 : ffffffc13ffaad80 [75476.681338] x5 : 00000000fa83b2da x4 : 0000000000000001 [75476.681341] x3 : 0000000000000000 x2 : 0000000000000000 [75476.681344] x1 : 0000000000000000 x0 : ffffffc13ffaad00 [75476.681348] Process kworker/2:1 (pid: 17426, stack limit = 0x0000000054b63590) [75476.681349] Call trace: [75476.681351] set_next_entity+0x1c/0x130 [75476.681353] pick_next_task_fair+0x4e8/0x568 [75476.681355] __schedule+0xe8/0x4b0 [75476.681357] do_task_dead+0x44/0x48 [75476.681359] do_exit+0x644/0x8e8 [75476.681361] die+0x1b8/0x1c8 [75476.681363] die_kernel_fault+0x60/0x70 [75476.681365] __do_kernel_fault+0x94/0xb0 [75476.681367] do_page_fault+0x1e0/0x458 [75476.681368] do_translation_fault+0x64/0x70 [75476.681370] do_mem_abort+0x3c/0xd0 [75476.681372] el1_da+0x20/0x80 [75476.681374] find_next_and_bit+0xc/0x70 [75476.681376] find_busiest_group+0x128/0x938 [75476.681378] load_balance+0x148/0x848 [75476.681380] pick_next_task_fair+0x1d4/0x568 [75476.681382] __schedule+0xe8/0x4b0 [75476.681384] schedule+0x38/0xa0 [75476.681385] worker_thread+0xc8/0x440 [75476.681387] kthread+0x124/0x128 [75476.681389] ret_from_fork+0x10/0x18 [75476.681391] Code: aa0003f4 aa0103f3 a9025bf5 d1020015 (b9404020) [75476.681394] ---[ end trace 19bbd785127be265 ]--- [75476.681395] Fixing recursive fault but reboot is needed! [75476.689314] Mem abort info: [75476.698134] Mem abort info: [75476.706952] ESR = 0x96000005 [75476.706954] Exception class = DABT (current EL), IL = 32 bits [75476.709755] ESR = 0x96000005 [75476.709757] Exception class = DABT (current EL), IL = 32 bits [75476.712818] SET = 0, FnV = 0 [75476.712820] EA = 0, S1PTW = 0 [75476.718762] SET = 0, FnV = 0 [75476.721824] Data abort info: [75476.721826] ISV = 0, ISS = 0x00000005 [75476.724975] EA = 0, S1PTW = 0 [75476.724977] Data abort info: [75476.727866] CM = 0, WnR = 0 [75476.727868] user pgtable: 4k pages, 39-bit VAs, pgdp = 0000000005d2fe31 [75476.731715] ISV = 0, ISS = 0x00000005 [75476.731717] CM = 0, WnR = 0 [75476.734693] [0000000000000003] pgd=0000000000000000, pud=0000000000000000 [75476.741335] user pgtable: 4k pages, 39-bit VAs, pgdp = 0000000005d2fe31 [75476.748148] Internal error: Oops: 96000005 [#4] PREEMPT SMP [75476.753740] [0000000000000040] pgd=0000000000000000 [75476.824732] Modules linked in: [75476.831545] , pud=0000000000000000 [75476.837836] vhost_net vhost tun bridge stp llc udlfb syscopyarea sysfillrect sysimgblt fb_sys_fops fb font autofs4 hid_generic usbhid hid binfmt_misc ip6t_REJECT nf_reject_ipv6 nf_conntrack_ipv6 nf_defrag_ipv6 ip6table_filter ip6_tables ipt_MASQUERADE xt_nat iptable_nat nf_nat_ipv4 iptable_mangle xt_TCPMSS nf_conntrack_ipv4 nf_defrag_ipv4 ipt_REJECT nf_reject_ipv4 xt_tcpudp xt_conntrack xt_multiport iptable_filter ip_tables x_tables pppoe pppox af_packet ppp_generic slhc nls_utf8 nls_cp852 vfat fat snd_usb_audio snd_hwdep snd_usbmidi_lib snd_rawmidi snd_pcm snd_timer snd soundcore nf_nat_ftp nf_conntrack_ftp nf_nat nf_conntrack ftdi_sio usbserial ipv6 aes_ce_blk crypto_simd cryptd aes_ce_cipher crc32_ce ghash_ce gf128mul aes_arm64 sha2_ce sha256_arm64 sha1_ce sha1_generic efivars xhci_plat_hcd xhci_hcd [75478.149128] usbcore usb_common mvpp2 phylink unix [75478.153944] CPU: 3 PID: 9994 Comm: CPU 3/KVM Tainted: G D W 4.18.12 #1 [75478.161630] Hardware name: Marvell Armada 8040 MacchiatoBin/Armada 8040 MacchiatoBin, BIOS EDK II Jul 30 2018 [75478.171584] pstate: 20000085 (nzCv daIf -PAN -UAO) [75478.176396] pc : find_next_and_bit+0xc/0x70 [75478.180594] lr : cpumask_next_and+0x20/0x28 [75478.184792] sp : ffffffc109ffb690 [75478.188118] x29: ffffffc109ffb690 x28: ffffffc109ffb728 [75478.193452] x27: 00000000ffffffff x26: fffffffffffffff8 [75478.198785] x25: ffffffc13b02f200 x24: 0000000000000000 [75478.204119] x23: ffffff80088696e4 x22: 0000000000000000 [75478.209453] x21: ffffffc13b02f220 x20: ffffffc109ffb8d8 [75478.214786] x19: ffffff8008859c80 x18: 0000000000000400 [75478.220120] x17: 0000000000000000 x16: 0000000000000000 [75478.225454] x15: 0000000000000400 x14: 0000000000000400 [75478.230787] x13: 0000000000000400 x12: 0000000000000001 [75478.236121] x11: 000000000000027b x10: ffffffc13ffb5e88 [75478.241455] x9 : ffffffc13b025f00 x8 : ffffffc13b025f00 [75478.246789] x7 : 000044a545230be8 x6 : 0000000000000001 [75478.252123] x5 : 0000000000000000 x4 : 0000000000000000 [75478.257456] x3 : 0000000000000000 x2 : 0000000000000004 [75478.262789] x1 : ffffffc13ffb5e88 x0 : 0000000000000003 [75478.268124] Process CPU 3/KVM (pid: 9994, stack limit = 0x0000000021cd5396) [75478.275113] Call trace: [75478.277569] find_next_and_bit+0xc/0x70 [75478.281419] find_busiest_group+0x128/0x938 [75478.285618] load_balance+0x148/0x848 [75478.289294] pick_next_task_fair+0x1d4/0x568 [75478.293581] __schedule+0xe8/0x4b0 [75478.296994] schedule+0x38/0xa0 [75478.300146] kvm_vcpu_block+0x88/0x180 [75478.303910] kvm_handle_wfx+0x80/0xb8 [75478.307585] handle_exit+0x138/0x1b8 [75478.311174] kvm_arch_vcpu_ioctl_run+0x2b0/0x5e8 [75478.315809] kvm_vcpu_ioctl+0x330/0x7a8 [75478.319659] do_vfs_ioctl+0xa4/0x7e8 [75478.323247] ksys_ioctl+0x78/0xa8 [75478.326573] sys_ioctl+0xc/0x18 [75478.329725] el0_svc_naked+0x30/0x34 [75478.333315] Code: d65f03c0 eb03005f 54000329 d346fc64 (f8647806) [75478.339432] ---[ end trace 19bbd785127be266 ]--- [75478.344067] Internal error: Oops: 96000005 [#5] PREEMPT SMP [75478.344089] Unable to handle kernel NULL pointer dereference at virtual address 0000000000000003 [75478.349661] Modules linked in: vhost_net vhost tun bridge stp [75478.358486] Mem abort info: [75478.358488] ESR = 0x96000005 [75478.364254] llc udlfb syscopyarea sysfillrect [75478.367061] Exception class = DABT (current EL), IL = 32 bits [75478.370122] sysimgblt fb_sys_fops fb font [75478.374585] SET = 0, FnV = 0 [75478.380524] autofs4 hid_generic usbhid hid [75478.384639] EA = 0, S1PTW = 0 [75478.387700] binfmt_misc ip6t_REJECT nf_reject_ipv6 nf_conntrack_ipv6 [75478.391901] Data abort info: [75478.395049] nf_defrag_ipv6 ip6table_filter ip6_tables ipt_MASQUERADE [75478.401518] ISV = 0, ISS = 0x00000005 [75478.404404] xt_nat iptable_nat nf_nat_ipv4 iptable_mangle [75478.410873] CM = 0, WnR = 0 [75478.414718] xt_TCPMSS nf_conntrack_ipv4 nf_defrag_ipv4 ipt_REJECT [75478.420229] user pgtable: 4k pages, 39-bit VAs, pgdp = 0000000005d2fe31 [75478.423203] nf_reject_ipv4 xt_tcpudp xt_conntrack xt_multiport [75478.429410] [0000000000000003] pgd=0000000000000000 [75478.436045] iptable_filter ip_tables x_tables pppoe [75478.441991] , pud=0000000000000000 [75478.446885] pppox af_packet ppp_generic slhc [75478.455280] nls_utf8 nls_cp852 vfat fat snd_usb_audio snd_hwdep snd_usbmidi_lib snd_rawmidi snd_pcm snd_timer snd soundcore nf_nat_ftp nf_conntrack_ftp nf_nat nf_conntrack ftdi_sio usbserial ipv6 aes_ce_blk crypto_simd cryptd aes_ce_cipher crc32_ce ghash_ce gf128mul aes_arm64 sha2_ce sha256_arm64 sha1_ce sha1_generic efivars xhci_plat_hcd xhci_hcd usbcore usb_common mvpp2 phylink unix [75478.493976] CPU: 0 PID: 9992 Comm: CPU 1/KVM Tainted: G D W 4.18.12 #1 [75478.501663] Hardware name: Marvell Armada 8040 MacchiatoBin/Armada 8040 MacchiatoBin, BIOS EDK II Jul 30 2018 [75478.511617] pstate: 20000085 (nzCv daIf -PAN -UAO) [75478.516431] pc : find_next_and_bit+0xc/0x70 [75478.520630] lr : cpumask_next_and+0x20/0x28 [75478.524829] sp : ffffffc137b5f690 [75478.528154] x29: ffffffc137b5f690 x28: ffffffc137b5f7e8 [75478.533489] x27: 0000000000000001 x26: fffffffffffffff8 [75478.538822] x25: ffffffc13b027f80 x24: 0000000000000000 [75478.544156] x23: ffffff80088696e4 x22: 0000000000000001 [75478.549489] x21: ffffffc13b027fa0 x20: ffffffc137b5f8d8 [75478.554822] x19: ffffff8008859c80 x18: 0000000000000400 [75478.560155] x17: 0000000000000000 x16: 0000000000000000 [75478.565488] x15: 0000000000000400 x14: 0000000000000400 [75478.570821] x13: 0000000000000400 x12: 0000000000000001 [75478.576154] x11: 000000000000027a x10: 0000000000000000 [75478.581488] x9 : 00000000002f6b4d x8 : 000000000033f2aa [75478.586822] x7 : 000000000000008d x6 : 0000000000000000 [75478.592155] x5 : 0000000000000001 x4 : 0000000000000000 [75478.597488] x3 : 0000000000000002 x2 : 0000000000000004 [75478.602821] x1 : ffffffc13ff6ae88 x0 : 0000000000000040 [75478.608155] Process CPU 1/KVM (pid: 9992, stack limit = 0x00000000db714d97) [75478.615143] Call trace: [75478.617599] find_next_and_bit+0xc/0x70 [75478.621449] find_busiest_group+0x128/0x938 [75478.625647] load_balance+0x148/0x848 [75478.629322] pick_next_task_fair+0x1d4/0x568 [75478.633609] __schedule+0xe8/0x4b0 [75478.637023] schedule+0x38/0xa0 [75478.640175] kvm_vcpu_block+0x88/0x180 [75478.643938] kvm_handle_wfx+0x80/0xb8 [75478.647614] handle_exit+0x138/0x1b8 [75478.651202] kvm_arch_vcpu_ioctl_run+0x2b0/0x5e8 [75478.655837] kvm_vcpu_ioctl+0x330/0x7a8 [75478.659687] do_vfs_ioctl+0xa4/0x7e8 [75478.663275] ksys_ioctl+0x78/0xa8 [75478.666602] sys_ioctl+0xc/0x18 [75478.669755] el0_svc_naked+0x30/0x34 [75478.673344] Code: d65f03c0 eb03005f 54000329 d346fc64 (f8647806) [75478.679462] ---[ end trace 19bbd785127be267 ]--- [75478.684097] Internal error: Oops: 96000005 [#6] PREEMPT SMP [75478.684130] note: CPU 1/KVM[9992] exited with preempt_count 1 [75478.689690] Modules linked in: vhost_net vhost tun bridge stp llc udlfb syscopyarea sysfillrect sysimgblt fb_sys_fops fb font autofs4 hid_generic usbhid hid binfmt_misc ip6t_REJECT nf_reject_ipv6 nf_conntrack_ipv6 nf_defrag_ipv6 ip6table_filter ip6_tables ipt_MASQUERADE xt_nat iptable_nat nf_nat_ipv4 iptable_mangle xt_TCPMSS nf_conntrack_ipv4 nf_defrag_ipv4 ipt_REJECT nf_reject_ipv4 xt_tcpudp xt_conntrack xt_multiport iptable_filter ip_tables x_tables pppoe pppox af_packet ppp_generic slhc nls_utf8 nls_cp852 vfat fat snd_usb_audio snd_hwdep snd_usbmidi_lib snd_rawmidi snd_pcm snd_timer snd soundcore nf_nat_ftp nf_conntrack_ftp nf_nat nf_conntrack ftdi_sio usbserial ipv6 aes_ce_blk crypto_simd cryptd aes_ce_cipher crc32_ce ghash_ce gf128mul aes_arm64 sha2_ce sha256_arm64 sha1_ce sha1_generic efivars [75478.697475] ------------[ cut here ]------------ [75478.766527] xhci_plat_hcd xhci_hcd [75478.771164] kernel BUG at arch/arm64/kvm/fpsimd.c:63! [75478.771166] usbcore usb_common mvpp2 phylink unix [75478.784547] CPU: 3 PID: 9994 Comm: CPU 3/KVM Tainted: G D W 4.18.12 #1 [75478.792233] Hardware name: Marvell Armada 8040 MacchiatoBin/Armada 8040 MacchiatoBin, BIOS EDK II Jul 30 2018 [75478.802187] pstate: 20000005 (nzCv daif -PAN -UAO) [75478.806997] pc : find_next_and_bit+0xc/0x70 [75478.811196] lr : cpumask_next_and+0x20/0x28 [75478.815394] sp : ffffffc13ffc30f0 [75478.818720] x29: ffffffc13ffc30f0 x28: ffffffc13ffc3188 [75478.824054] x27: 00000000ffffffff x26: 0000000000000008 [75478.829387] x25: ffffffc13b02f200 x24: 0000000000000002 [75478.834721] x23: ffffff80088696e4 x22: 0000000000000000 [75478.840054] x21: ffffffc13b02f220 x20: ffffffc13ffc3338 [75478.845388] x19: ffffff8008859c80 x18: 0000000000000400 [75478.850721] x17: 0000000000000000 x16: 0000000000000000 [75478.856055] x15: 0000000000000400 x14: 0000000000000400 [75478.861388] x13: 0000000000000400 x12: 0000000000000001 [75478.866723] x11: 00000000000000c9 x10: ffffffc13ffb5e88 [75478.872056] x9 : ffffffc13b025f00 x8 : ffffffc13b025f00 [75478.877389] x7 : 000044a59e8b3ae8 x6 : 0000000000000001 [75478.882722] x5 : 0000000000000000 x4 : 0000000000000000 [75478.888055] x3 : 0000000000000000 x2 : 0000000000000004 [75478.893389] x1 : ffffffc13ffb5e88 x0 : 0000000000000003 [75478.898723] Process CPU 3/KVM (pid: 9994, stack limit = 0x0000000021cd5396) [75478.905711] Call trace: [75478.908167] find_next_and_bit+0xc/0x70 [75478.912017] find_busiest_group+0x128/0x938 [75478.916215] load_balance+0x148/0x848 [75478.919890] rebalance_domains+0x184/0x290 [75478.924001] run_rebalance_domains+0xf4/0x1f0 [75478.928374] __do_softirq+0x104/0x1f8 [75478.932049] irq_exit+0x9c/0xb8 [75478.935202] __handle_domain_irq+0x64/0xb8 [75478.939313] gic_handle_irq+0x50/0xa0 [75478.942988] el1_irq+0xb0/0x128 [75478.946141] _raw_spin_unlock_irq+0x18/0x48 [75478.950339] exit_signals+0x188/0x218 [75478.954014] do_exit+0xb0/0x8e8 [75478.957167] die+0x1b8/0x1c8 [75478.960057] die_kernel_fault+0x60/0x70 [75478.963908] __do_kernel_fault+0x94/0xb0 [75478.967845] do_page_fault+0x1e0/0x458 [75478.971607] do_translation_fault+0x64/0x70 [75478.975805] do_mem_abort+0x3c/0xd0 [75478.979305] el1_da+0x20/0x80 [75478.982283] find_next_and_bit+0xc/0x70 [75478.986133] find_busiest_group+0x128/0x938 [75478.990331] load_balance+0x148/0x848 [75478.994006] pick_next_task_fair+0x1d4/0x568 [75478.998292] __schedule+0xe8/0x4b0 [75479.001706] schedule+0x38/0xa0 [75479.004858] kvm_vcpu_block+0x88/0x180 [75479.008622] kvm_handle_wfx+0x80/0xb8 [75479.012297] handle_exit+0x138/0x1b8 [75479.015886] kvm_arch_vcpu_ioctl_run+0x2b0/0x5e8 [75479.020521] kvm_vcpu_ioctl+0x330/0x7a8 [75479.024370] do_vfs_ioctl+0xa4/0x7e8 [75479.027958] ksys_ioctl+0x78/0xa8 [75479.031285] sys_ioctl+0xc/0x18 [75479.034438] el0_svc_naked+0x30/0x34 [75479.038026] Code: d65f03c0 eb03005f 54000329 d346fc64 (f8647806) [75479.044143] ---[ end trace 19bbd785127be268 ]--- [75479.048778] Kernel panic - not syncing: Fatal exception in interrupt [75479.055157] SMP: stopping secondary CPUs [75480.102191] SMP: failed to stop secondary CPUs 0-3 [75480.106999] Kernel Offset: disabled [75480.110499] CPU features: 0x01002000 [75480.114087] Memory Limit: none [75480.117153] ---[ end Kernel panic - not syncing: Fatal exception in interrupt ]--- _______________________________________________ kvmarm mailing list kvmarm@xxxxxxxxxxxxxxxxxxxxx https://lists.cs.columbia.edu/mailman/listinfo/kvmarm
