Public bug reported:
== Comment: #0 - NAGESWARA R. SASTRY <nasas...@in.ibm.com> - 2016-09-22
06:40:59 ==
---Problem Description---
Try installing btrfs-progs using 'apt install -y btrfs-progs'
At the time of updating initramfs seeing a 'segfault' and kernel OOPs
Contact Information = nasas...@in.ibm.com
---uname output---
Linux pkvmhab010 4.8.0-11-generic #12-Ubuntu SMP Sat Sep 17 19:58:16 UTC 2016
ppc64le ppc64le ppc64le GNU/Linux
Machine Type = 8348-21C
---Debugger---
A debugger is not configured
---Steps to Reproduce---
# apt install -y btrfs-progs/yakkety
Reading package lists... Done
Building dependency tree
Reading state information... Done
Selected version '4.7-1' (Ubuntu:16.10/yakkety [ppc64el]) for 'btrfs-progs'
The following package was automatically installed and is no longer required:
libprotobuf-lite9v5
Use 'apt autoremove' to remove it.
The following additional packages will be installed:
liblzo2-2
The following NEW packages will be installed:
btrfs-progs liblzo2-2
0 upgraded, 2 newly installed, 0 to remove and 0 not upgraded.
Need to get 629 kB of archives.
After this operation, 5,987 kB of additional disk space will be used.
Get:1 http://us.ports.ubuntu.com/ubuntu-ports yakkety/main ppc64el liblzo2-2
ppc64el 2.08-1.2 [67.2 kB]
Get:2 http://us.ports.ubuntu.com/ubuntu-ports yakkety/main ppc64el btrfs-progs
ppc64el 4.7-1 [562 kB]
Fetched 629 kB in 0s (2,416 kB/s)
Selecting previously unselected package liblzo2-2:ppc64el.
(Reading database ... 129624 files and directories currently installed.)
Preparing to unpack .../0-liblzo2-2_2.08-1.2_ppc64el.deb ...
Unpacking liblzo2-2:ppc64el (2.08-1.2) ...
Selecting previously unselected package btrfs-progs.
Preparing to unpack .../1-btrfs-progs_4.7-1_ppc64el.deb ...
Unpacking btrfs-progs (4.7-1) ...
Processing triggers for initramfs-tools (0.125ubuntu3) ...
update-initramfs: Generating /boot/initrd.img-4.8.0-11-generic
Segmentation fault
Oops output:
[ 643.673740] Unable to handle kernel paging request for data at address
0x00000020
[ 643.674688] Faulting instruction address: 0xc000000000185040
[ 643.675418] Oops: Kernel access of bad area, sig: 11 [#1]
[ 643.676115] SMP NR_CPUS=2048 NUMA PowerNV
[ 643.676650] Modules linked in: 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 xt_tcpudp
tun bridge stp llc kvm_hv kvm_pr kvm ebtable_filter ebtables ip6table_filter
ip6_tables iptable_filter evdev joydev at24 ghash_generic gf128mul vmx_crypto
nvmem_core sg powernv_rng rng_core ip_tables x_tables autofs4 ext4 crc16 jbd2
fscrypto mbcache dm_mod sr_mod cdrom ses enclosure scsi_transport_sas sd_mod
hid_generic usbhid hid uas usb_storage xhci_pci bnx2x ast xhci_hcd i2c_algo_bit
ttm drm_kms_helper syscopyarea sysfillrect sysimgblt usbcore fb_sys_fops drm
tg3 aacraid ptp libphy pps_core ahci mdio usb_common libcrc32c libahci
crc32c_generic crc32c_vpmsum
[ 643.686164] CPU: 1 PID: 7267 Comm: grep Not tainted 4.8.0-11-generic
#12-Ubuntu
[ 643.687101] task: c000003c7edfd200 task.stack: c000003c82b08000
[ 643.687878] NIP: c000000000185040 LR: c000000000185054 CTR: c0000000004fd390
[ 643.688873] REGS: c000003c82b0b940 TRAP: 0300 Not tainted
(4.8.0-11-generic)
[ 643.689851] MSR: 9000000000009033 <SF,HV,EE,ME,IR,DR,RI,LE> CR: 88044828
XER: 20000000
[ 643.691001] CFAR: c0000000000087d0 DAR: 0000000000000020 DSISR: 40000000
SOFTE: 1
GPR00: c000000000185054 c000003c82b0bbc0 c000000000f46700
0000000000000710
GPR04: 0000000000010000 0000000000000001 ffff0a00ffffff04
d00000001d520723
GPR08: c0000000004f6700 0000000000000704 c0000000004fd164
0000000000000001
GPR12: 0000000028044828 c00000000fb80900 00000000289a0010
000000000000000a
GPR16: ffffffffffffffff 0000000000000000 00000000289a0110
0000000000000000
GPR20: 000001003d980000 0000000000010000 c000003c7bf63240
c000000002e8bb00
GPR24: fffffffffffff000 c000003c82b0be00 c000003c82b0bc88
c0000000009a0d50
GPR28: d00000001d432308 d00000001d432610 c000003c7bf63200
0000000000000000
[ 643.699385] NIP [c000000000185040] m_show+0xb0/0x260
[ 643.703211] LR [c000000000185054] m_show+0xc4/0x260
[ 643.721108] Call Trace:
[ 643.730239] [c000003c82b0bbc0] [c000000000185054] m_show+0xc4/0x260
(unreliable)
[ 643.756587] [c000003c82b0bc60] [c00000000034521c] seq_read+0x43c/0x550
[ 643.787204] [c000003c82b0bd00] [c0000000003a9ba0] proc_reg_read+0xb0/0x110
[ 643.804558] [c000003c82b0bd50] [c00000000030c03c] __vfs_read+0x6c/0xe0
[ 643.823169] [c000003c82b0bd90] [c00000000030d5bc] vfs_read+0xbc/0x1b0
[ 643.858380] [c000003c82b0bde0] [c00000000030f38c] SyS_read+0x6c/0x110
[ 643.893880] [c000003c82b0be30] [c0000000000095e0] system_call+0x38/0x108
[ 643.916214] Instruction dump:
[ 643.936521] 3884a648 7fc3f378 481c0961 60000000 ebfd0309 7fbdf840 419e0164
3f62ffa6
[ 643.988350] 3b7ba650 60000000 60000000 60420000 <e8bf0020> 7f64db78 7fc3f378
38a50018
[ 644.040907] ---[ end trace e452dce365a89415 ]---
** Affects: linux (Ubuntu)
Importance: Undecided
Assignee: Taco Screen team (taco-screen-team)
Status: New
** Tags: architecture-ppc64le bugnameltc-146640 severity-high
targetmilestone-inin1610
** Tags added: architecture-ppc64le bugnameltc-146640 severity-high
targetmilestone-inin1610
** Changed in: ubuntu
Assignee: (unassigned) => Taco Screen team (taco-screen-team)
** Package changed: ubuntu => linux (Ubuntu)
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https://bugs.launchpad.net/bugs/1627984
Title:
[Ubuntu16.10]KV4.8: OOPs while updating initramfs
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