This issue can be found on E PowerPC as well, test will stop at the fan
smoke test as well.
[ 1316.676714] BUG: Unable to handle kernel data access at 0xd9d4a05293989f60
[ 1316.676743] Faulting instruction address: 0xc00800000cd9b164
[ 1316.676755] Oops: Kernel access of bad area, sig: 11 [#1]
[ 1316.676777] LE PAGE_SIZE=64K MMU=Radix SMP NR_CPUS=2048 NUMA PowerNV
[ 1316.676788] Modules linked in: xt_conntrack xt_MASQUERADE
nf_conntrack_netlink nfnetlink xfrm_user xfrm_algo xt_addrtype iptable_filter
iptable_nat nf_nat nf_conntrack nf_defrag_ipv6 nf_defrag_ipv4 bpfilter
br_netfilter bridge stp llc aufs overlay unix_diag binfmt_misc kvm_hv kvm
zfs(PO) zunicode(PO) zavl(PO) icp(PO) zlua(PO) zcommon(PO) znvpair(PO) spl(O)
userio snd_seq snd_seq_device snd_timer snd soundcore hci_vhci bluetooth
ecdh_generic ecc vhost_vsock vmw_vsock_virtio_transport_common vsock uhid
vhost_net vhost tap cuse dccp_ipv4 dccp atm algif_rng aegis128 aegis128l
aegis256 morus1280 morus640 algif_aead anubis fcrypt khazad seed sm4_generic
tea crc32_generic md4 michael_mic nhpoly1305 poly1305_generic rmd128 rmd160
rmd256 rmd320 sha3_generic sm3_generic streebog_generic tgr192 wp512
xxhash_generic algif_hash blowfish_generic blowfish_common cast5_generic
des_generic salsa20_generic chacha_generic camellia_generic cast6_generic
cast_common serpent_generic twofish_generic
[ 1316.676839] twofish_common algif_skcipher af_alg dm_multipath scsi_dh_rdac
scsi_dh_emc scsi_dh_alua joydev input_leds mac_hid ofpart cmdlinepart
ipmi_powernv powernv_flash ipmi_devintf mtd ipmi_msghandler at24
uio_pdrv_genirq opal_prd ibmpowernv uio vmx_crypto sch_fq_codel ip_tables
x_tables autofs4 btrfs zstd_compress raid10 raid456 async_raid6_recov
async_memcpy async_pq async_xor async_tx xor raid6_pq libcrc32c raid1 raid0
multipath linear hid_generic usbhid hid ses enclosure scsi_transport_sas ast
drm_vram_helper i2c_algo_bit ttm drm_kms_helper syscopyarea sysfillrect
crct10dif_vpmsum sysimgblt fb_sys_fops crc32c_vpmsum drm i40e aacraid
drm_panel_orientation_quirks
[ 1316.677182] CPU: 16 PID: 104008 Comm: dockerd Tainted: P O
5.3.0-52-generic #46-Ubuntu
[ 1316.677214] NIP: c00800000cd9b164 LR: c00800000cd9b148 CTR: c000000000161290
[ 1316.677235] REGS: c000000bbe603690 TRAP: 0380 Tainted: P O
(5.3.0-52-generic)
[ 1316.677256] MSR: 9000000002009033 <SF,HV,VEC,EE,ME,IR,DR,RI,LE> CR:
28402884 XER: 00000000
[ 1316.677291] CFAR: c00800000cd96ad0 IRQMASK: 0
GPR00: c00800000cd9b148 c000000bbe603920 c00800000cdbca00
c000000fecf26000
GPR04: 0000000004050001 c00000094cb4a910 0000000000000001
ffffffffffffffff
GPR08: c00000095056e490 d9d4a05293989f00 000000006a656a62
c00800000cda73a8
GPR12: c000000000161290 c000000ffffed000 000000c00040b340
0000000000000001
GPR16: 000000c00040a000 ffffffffffffffff 000000000000004e
0000000000000001
GPR20: 0000000000000200 000004e2c41b29c0 0000000000100000
00000000000041ed
GPR24: 0000000000000000 0000000000000200 0000000000000000
c00000095056e490
GPR28: c000000fecf26000 c00000095056e490 c0000009504f1628
c00000094cb4a900
[ 1316.677485] NIP [c00800000cd9b164] ovl_open_realfile+0x7c/0x1b0 [overlay]
[ 1316.677516] LR [c00800000cd9b148] ovl_open_realfile+0x60/0x1b0 [overlay]
[ 1316.677535] Call Trace:
[ 1316.677552] [c000000bbe603920] [c00800000cd9b148]
ovl_open_realfile+0x60/0x1b0 [overlay] (unreliable)
[ 1316.677586] [c000000bbe6039e0] [c00800000cd9c844] ovl_open+0x9c/0x110
[overlay]
[ 1316.677619] [c000000bbe603a20] [c000000000450a98] do_dentry_open+0x298/0x4d0
[ 1316.677650] [c000000bbe603ab0] [c00000000046fc70] do_last+0x1f0/0xb40
[ 1316.677680] [c000000bbe603bb0] [c000000000470670] path_openat+0xb0/0x370
[ 1316.677709] [c000000bbe603c70] [c000000000472470] do_filp_open+0x90/0x130
[ 1316.677730] [c000000bbe603d90] [c000000000452f38] do_sys_open+0x268/0x410
[ 1316.677761] [c000000bbe603e20] [c00000000000b388] system_call+0x5c/0x70
[ 1316.677789] Instruction dump:
[ 1316.677805] 65290404 e87b0028 7d2407b4 f8810068 4bffb95d 60000000 e9210080
3d406a65
[ 1316.677838] e8810068 614a6a62 7c7c1b78 e9290068 <e9290060> 7c295000 418200d4
e92d0968
[ 1316.677873] ---[ end trace 25b0ddfe848d368f ]---
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https://bugs.launchpad.net/bugs/1876645
Title:
Unable to handle kernel pointer dereference in virtual kernel address
space on Eoan
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