On Thu, 2017-07-13 at 08:07 -0400, Jan Stancek wrote: (You may want to CC the patch author... Added Paul).
> ----- Original Message ----- > > Hi, > > > > I'm running into Oops below on IBM PowerNV system (model 8247-22L) > > with 4.12 trees and qemu-kvm-2.9. It triggers quickly after I start > > KVM guest installation: > > > > virt-install --name ppc64le_kvm_1cpu --mac 52:56:00:00:00:06 --location > > nfs://XXX --ram=1024 --vcpus=1 --file-size=20 --hvm --nonsparse --debug > > --nographics --noautoconsole --wait -1 --prompt --accelerate > > --os-variant=virtio26 --network bridge:br3,model=virtio --serial pty > > --console pty --file /home/virtimages/VirtualMachines/ppc64le_kvm_1cpu.img > > --extra-args "serial console=tty0 console=hvc0" --noreboot > > > > # git describe > > v4.12-10985-g4ca6df1 > > > > # cat /proc/cpuinfo | head > > processor : 0 > > cpu : POWER8E (raw), altivec supported > > clock : 3325.000000MHz > > revision : 2.1 (pvr 004b 0201) > > > > 4.11 works OK > > 4.11 with these 4 patches applied panics in same way as latest HEAD > > (v4.12-10985-g4ca6df1) > > KVM: PPC: Book3S HV: Save/restore host values of debug registers > > KVM: PPC: Book3S HV: Preserve userspace HTM state properly > > KVM: PPC: Book3S HV: Restore critical SPRs to host values on guest exit > > KVM: PPC: Book3S HV: Context-switch EBB registers properly > > Bisect on git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux-2.6.git > tree identified this as first BAD patch: > > commit 46a704f8409f79fd66567ad3f8a7304830a84293 > Author: Paul Mackerras <pau...@ozlabs.org> > Date: Thu Jun 15 16:10:27 2017 +1000 > KVM: PPC: Book3S HV: Preserve userspace HTM state properly > > Regards, > Jan > > > > > --- > > > > [ 181.328511] Unrecoverable TM Unavailable Exception f60 at > > d00000001e7d9980 > > [ 181.328605] Oops: Unrecoverable TM Unavailable Exception, sig: 6 [#1] > > [ 181.328613] SMP NR_CPUS=2048 > > [ 181.328613] NUMA > > [ 181.328618] PowerNV > > [ 181.328646] Modules linked in: vhost_net vhost tap > > nfs_layout_nfsv41_files > > rpcsec_gss_krb5 nfsv4 dns_resolver nfs fscache xt_CHECKSUM iptable_mangle > > ipt_MASQUERADE nf_nat_masquerade_ipv4 iptable_nat nf_nat_ipv4 nf_nat > > nf_conntrack_ipv4 nf_defrag_ipv4 xt_conntrack nf_conntrack ipt_REJECT > > nf_reject_ipv4 tun ebtable_filter ebtables ip6table_filter ip6_tables > > iptable_filter bridge stp llc kvm_hv kvm nfsd ses enclosure > > scsi_transport_sas ghash_generic auth_rpcgss gf128mul xts sg ctr nfs_acl > > lockd vmx_crypto shpchp ipmi_powernv i2c_opal grace ipmi_devintf i2c_core > > powernv_rng sunrpc ipmi_msghandler ibmpowernv uio_pdrv_genirq uio > > leds_powernv powernv_op_panel ip_tables xfs sd_mod lpfc ipr bnx2x libata > > mdio ptp pps_core scsi_transport_fc libcrc32c dm_mirror dm_region_hash > > dm_log dm_mod > > [ 181.329278] CPU: 40 PID: 9926 Comm: CPU 0/KVM Not tainted 4.12.0+ #1 > > [ 181.329337] task: c000003fc6980000 task.stack: c000003fe4d80000 > > [ 181.329396] NIP: d00000001e7d9980 LR: d00000001e77381c CTR: > > d00000001e7d98f0 > > [ 181.329465] REGS: c000003fe4d837e0 TRAP: 0f60 Not tainted (4.12.0+) > > [ 181.329523] MSR: 9000000000009033 <SF,HV,EE,ME,IR,DR,RI,LE> > > [ 181.329527] CR: 24022448 XER: 00000000 > > [ 181.329608] CFAR: d00000001e773818 SOFTE: 1 > > [ 181.329608] GPR00: d00000001e77381c c000003fe4d83a60 d00000001e7ef410 > > c000003fdcfe0000 > > [ 181.329608] GPR04: c000003fe4f00000 0000000000000000 0000000000000000 > > c000003fd7954800 > > [ 181.329608] GPR08: 0000000000000001 c000003fc6980000 0000000000000000 > > d00000001e7e2880 > > [ 181.329608] GPR12: d00000001e7d98f0 c000000007b19000 00000001295220e0 > > 00007fffc0ce2090 > > [ 181.329608] GPR16: 0000010011886608 00007fff8c89f260 0000000000000001 > > 00007fff8c080028 > > [ 181.329608] GPR20: 0000000000000000 00000100118500a6 0000010011850000 > > 0000010011850000 > > [ 181.329608] GPR24: 00007fffc0ce1b48 0000010011850000 00000000d673b901 > > 0000000000000000 > > [ 181.329608] GPR28: 0000000000000000 c000003fdcfe0000 c000003fdcfe0000 > > c000003fe4f00000 > > [ 181.330199] NIP [d00000001e7d9980] kvmppc_vcpu_run_hv+0x90/0x6b0 [kvm_hv] > > [ 181.330264] LR [d00000001e77381c] kvmppc_vcpu_run+0x2c/0x40 [kvm] > > [ 181.330322] Call Trace: > > [ 181.330351] [c000003fe4d83a60] [d00000001e773478] > > kvmppc_set_one_reg+0x48/0x340 [kvm] (unreliable) > > [ 181.330437] [c000003fe4d83b30] [d00000001e77381c] > > kvmppc_vcpu_run+0x2c/0x40 [kvm] > > [ 181.330513] [c000003fe4d83b50] [d00000001e7700b4] > > kvm_arch_vcpu_ioctl_run+0x114/0x2a0 [kvm] > > [ 181.330586] [c000003fe4d83bd0] [d00000001e7642f8] > > kvm_vcpu_ioctl+0x598/0x7a0 [kvm] > > [ 181.330658] [c000003fe4d83d40] [c0000000003451b8] do_vfs_ioctl+0xc8/0x8b0 > > [ 181.330717] [c000003fe4d83de0] [c000000000345a64] SyS_ioctl+0xc4/0x120 > > [ 181.330776] [c000003fe4d83e30] [c00000000000b004] system_call+0x58/0x6c > > [ 181.330833] Instruction dump: > > [ 181.330869] e92d0260 e9290b50 e9290108 792807e3 41820058 e92d0260 > > e9290b50 > > e9290108 > > [ 181.330941] 792ae8a4 794a1f87 408204f4 e92d0260 <7d4022a6> f9490ff0 > > e92d0260 7d4122a6 > > [ 181.331013] ---[ end trace 6f6ddeb4bfe92a92 ]--- > > [ 181.334574] > > [ 183.334758] Kernel panic - not syncing: Fatal exception > > [ 183.338352] Rebooting in 10 seconds.. > > > > --- > > > > Regards, > > Jan > >
