Public bug reported:
== Comment: #0 - RAHUL CHANDRAKAR <rahch...@in.ibm.com> - 2017-12-01 03:26:31 ==
---Problem Description---
Error while running targetcli command on Ubuntu 16.04
---uname output---
Linux alpvm2nova 4.4.0-98-generic #121-Ubuntu SMP Tue Oct 10 14:23:01 UTC 2017
ppc64le ppc64le ppc64le GNU/Linux
Machine Type = 8408-44E
---System Hang---
gpfs is stuck because of this
---Debugger---
A debugger is not configured
Contact Information = rahch...@in.ibm.com
Stack trace output:
[Fri Dec 1 03:05:12 2017] Unable to handle kernel paging request for data at
address 0x010d0688
[Fri Dec 1 03:05:12 2017] Faulting instruction address: 0xd000000007570a30
[Fri Dec 1 03:05:12 2017] Oops: Kernel access of bad area, sig: 11 [#2]
[Fri Dec 1 03:05:12 2017] SMP NR_CPUS=2048 NUMA pSeries
[Fri Dec 1 03:05:12 2017] Modules linked in: hvcs(OE) hvcserver rpadlpar_io
rpaphp xt_tcpudp xt_nat target_core_pscsi(OE) target_core_file(OE)
target_core_iblock(OE) target_core_user(OE) uio iscsi_target_mod(OE) mmfs26(OE)
mmfslinux(OE) tracedev(OE) dccp_diag dccp tcp_diag udp_diag inet_diag unix_diag
af_packet_diag netlink_diag openvswitch binfmt_misc pseries_rng ibmvmc(OE)
vmx_crypto rtc_generic xt_conntrack nf_nat_ftp nf_conntrack_ftp
nf_conntrack_netlink nfnetlink nf_conntrack_netbios_ns nf_conntrack_broadcast
nf_conntrack_ipv6 nf_defrag_ipv6 nbd br_netfilter bridge ib_iser rdma_cm iw_cm
ib_cm ib_sa ib_mad ib_core ib_addr vhost_net vhost macvtap macvlan iscsi_tcp
libiscsi_tcp libiscsi scsi_transport_iscsi ip_vs libcrc32c iptable_nat
nf_conntrack_ipv4 nf_defrag_ipv4 nf_nat_ipv4 iptable_mangle iptable_filter
[Fri Dec 1 03:05:12 2017] ipt_REJECT nf_reject_ipv4 ipt_MASQUERADE
nf_nat_masquerade_ipv4 nf_nat nf_conntrack ip_tables ip6table_filter ip6_tables
ebtables x_tables dm_snapshot dm_bufio 8021q garp mrp stp llc autofs4
dm_round_robin ses enclosure scsi_transport_sas be2net ibmvscsis(OE)
target_core_mod(OE) configfs(OE) ibmveth(OE) lpfc vxlan ip6_udp_tunnel
udp_tunnel scsi_transport_fc ipr scsi_dh_emc scsi_dh_rdac scsi_dh_alua
dm_multipath
[Fri Dec 1 03:05:12 2017] CPU: 13 PID: 178523 Comm: targetcli Tainted: G
D W OE 4.4.0-98-generic #121-Ubuntu
[Fri Dec 1 03:05:12 2017] task: c0000007d399cf60 ti: c0000007e4a84000 task.ti:
c0000007e4a84000
[Fri Dec 1 03:05:12 2017] NIP: d000000007570a30 LR: d0000000075709c4 CTR:
c00000000016e220
[Fri Dec 1 03:05:12 2017] REGS: c0000007e4a87820 TRAP: 0300 Tainted: G
D W OE (4.4.0-98-generic)
[Fri Dec 1 03:05:12 2017] MSR: 8000000000009033 <SF,EE,ME,IR,DR,RI,LE> CR:
42222248 XER: 00000000
[Fri Dec 1 03:05:12 2017] CFAR: c000000000008468 DAR: 00000000010d0688 DSISR:
40000000 SOFTE: 1
GPR00: d0000000075709c4 c0000007e4a87aa0
d00000000757fdf8 0000000000000001
GPR04: 0000000002400000 c0000007e8739b10
0000000000000001 0000000000000000
GPR08: 00000000010d0680 d000000007f61d50
d00000000757fdf8 d0000000075765f0
GPR12: c00000000016e220 c00000000fb47b80
00003fffc86beb50 0000000000000000
GPR16: 0000000000000000 00000000103b7d00
0000000000000000 0000000000000000
GPR20: c0000007d5379aa0 c0000004d39b5280
0000000000000000 0000000000000024
GPR24: c0000007e8739b00 c0000004d39b5280
d000000007570910 c000000516f61d00
GPR28: c000000518b7e488 c0000007a6367810
c0000007e8739b00 d000000007f6db50
[Fri Dec 1 03:05:12 2017] NIP [d000000007570a30]
configfs_open_file+0x120/0x260 [configfs]
[Fri Dec 1 03:05:12 2017] LR [d0000000075709c4] configfs_open_file+0xb4/0x260
[configfs]
[Fri Dec 1 03:05:12 2017] Call Trace:
[Fri Dec 1 03:05:12 2017] [c0000007e4a87aa0] [d0000000075709c4]
configfs_open_file+0xb4/0x260 [configfs] (unreliable)
[Fri Dec 1 03:05:12 2017] [c0000007e4a87af0] [c0000000002e2d40]
do_dentry_open+0x2c0/0x460
[Fri Dec 1 03:05:12 2017] [c0000007e4a87b50] [c0000000002fb388]
do_last+0x178/0xff0
[Fri Dec 1 03:05:12 2017] [c0000007e4a87c10] [c0000000002fc41c]
path_openat+0xcc/0x3c0
[Fri Dec 1 03:05:12 2017] [c0000007e4a87c90] [c0000000002fe33c]
do_filp_open+0xfc/0x170
[Fri Dec 1 03:05:12 2017] [c0000007e4a87db0] [c0000000002e4b30]
do_sys_open+0x1c0/0x3b0
[Fri Dec 1 03:05:12 2017] [c0000007e4a87e30] [c000000000009204]
system_call+0x38/0xb4
[Fri Dec 1 03:05:12 2017] Instruction dump:
[Fri Dec 1 03:05:12 2017] 419e00e0 792a07e1 41820020 a13c0000 71290124
2f890000 419e00c8 e93f0018
[Fri Dec 1 03:05:12 2017] 2fa90000 419e00bc 3d420000 3c800240 <eb880008>
e92a8028 38a00050 608480c0
[Fri Dec 1 03:05:12 2017] ---[ end trace 16fe4073c33fc91e ]---
Oops output:
no
System Dump Info:
The system is not configured to capture a system dump.
*Additional Instructions for rahch...@in.ibm.com:
-Post a private note with access information to the machine that the bug is
occuring on.
-Attach sysctl -a output output to the bug.
== Comment: #1 - RAHUL CHANDRAKAR <rahch...@in.ibm.com> - 2017-12-01
03:31:28 ==
== Comment: #2 - RAHUL CHANDRAKAR <rahch...@in.ibm.com> - 2017-12-01 03:36:09 ==
== Comment: #5 - VIPIN K. PARASHAR <vipar...@in.ibm.com> - 2017-12-01 06:00:29
==
(In reply to comment #4)
> From dmesg logs
> ===========
> [Fri Dec 1 02:16:57 2017] ------------[ cut here ]------------
> [Fri Dec 1 02:16:57 2017] WARNING: at include/linux/kref.h:46
> [Fri Dec 1 02:16:57 2017] Modules linked in: hvcs(OE) hvcserver rpadlpar_io
> rpaphp xt_tcpudp xt_nat target_core_pscsi(OE) target_core_file(OE)
> target_core_iblock(OE) target_core_user(OE) uio iscsi_target_mod(OE)
> mmfs26(OE) mmfslinux(OE) tracedev(OE) dccp_diag dccp tcp_diag udp_diag
> inet_diag unix_diag af_packet_diag netlink_diag openvswitch binfmt_misc
> pseries_rng ibmvmc(OE) vmx_crypto rtc_generic xt_conntrack nf_nat_ftp
> nf_conntrack_ftp nf_conntrack_netlink nfnetlink nf_conntrack_netbios_ns
> nf_conntrack_broadcast nf_conntrack_ipv6 nf_defrag_ipv6 nbd br_netfilter
> bridge ib_iser rdma_cm iw_cm ib_cm ib_sa ib_mad ib_core ib_addr vhost_net
> vhost macvtap macvlan iscsi_tcp libiscsi_tcp libiscsi scsi_transport_iscsi
> ip_vs libcrc32c iptable_nat nf_conntrack_ipv4 nf_defrag_ipv4 nf_nat_ipv4
> iptable_mangle iptable_filter
> [Fri Dec 1 02:16:57 2017] ipt_REJECT nf_reject_ipv4 ipt_MASQUERADE
> nf_nat_masquerade_ipv4 nf_nat nf_conntrack ip_tables ip6table_filter
> ip6_tables ebtables x_tables dm_snapshot dm_bufio 8021q garp mrp stp llc
> autofs4 dm_round_robin ses enclosure scsi_transport_sas be2net ibmvscsis(OE)
> target_core_mod(OE) configfs(OE) ibmveth(OE) lpfc vxlan ip6_udp_tunnel
> udp_tunnel scsi_transport_fc ipr scsi_dh_emc scsi_dh_rdac scsi_dh_alua
> dm_multipath
> [Fri Dec 1 02:16:57 2017] CPU: 14 PID: 139667 Comm: targetcli Tainted: G
> OE 4.4.0-98-generic #121-Ubuntu
> [Fri Dec 1 02:16:57 2017] task: c0000007d39911d0 ti: c000000783430000
> task.ti: c000000783430000
> [Fri Dec 1 02:16:57 2017] NIP: d000000007575c10 LR: d000000007570980 CTR:
> c000000000b10610
> [Fri Dec 1 02:16:57 2017] REGS: c0000007834337f0 TRAP: 0700 Tainted: G
> OE (4.4.0-98-generic)
> [Fri Dec 1 02:16:57 2017] MSR: 8000000000029033 <SF,EE,ME,IR,DR,RI,LE> CR:
> 22242842 XER: 00000000
> [Fri Dec 1 02:16:57 2017] CFAR: d000000007575bec SOFTE: 1
> GPR00: d000000007570980 c000000783433a70
> d00000000757fdf8 c0000007a6367810
> GPR04: c00000078264e400 c00000078264e410
> 0000000000000001 0000000000000000
> GPR08: 0000000000000000 0000000000000001
> d000000007578848 d0000000075763e8
> GPR12: c000000000b10610 c00000000fb48500
> 00003fffd23170f0 0000000000000000
> GPR16: 0000000000000000 00000000103b7d00
> 0000000000000000 0000000000000000
> GPR20: c0000007d5379aa0 c0000004d39b5280
> 0000000000000000 0000000000000024
> GPR24: c00000078264e400 c0000004d39b5280
> d000000007570910 c0000007637e0200
> GPR28: c000000518b7e488 0000000000000000
> c00000078264e400 c0000004d39b5280
> [Fri Dec 1 02:16:57 2017] NIP [d000000007575c10] config_item_get+0x70/0x90
> [configfs]
> [Fri Dec 1 02:16:57 2017] LR [d000000007570980]
> configfs_open_file+0x70/0x260 [configfs]
> [Fri Dec 1 02:16:57 2017] Call Trace:
> [Fri Dec 1 02:16:57 2017] [c000000783433aa0] [d000000007570980]
> configfs_open_file+0x70/0x260 [configfs]
> [Fri Dec 1 02:16:57 2017] [c000000783433af0] [c0000000002e2d40]
> do_dentry_open+0x2c0/0x460
> [Fri Dec 1 02:16:57 2017] [c000000783433b50] [c0000000002fb388]
> do_last+0x178/0xff0
> [Fri Dec 1 02:16:57 2017] [c000000783433c10] [c0000000002fc41c]
> path_openat+0xcc/0x3c0
> [Fri Dec 1 02:16:57 2017] [c000000783433c90] [c0000000002fe33c]
> do_filp_open+0xfc/0x170
> [Fri Dec 1 02:16:57 2017] [c000000783433db0] [c0000000002e4b30]
> do_sys_open+0x1c0/0x3b0
> [Fri Dec 1 02:16:57 2017] [c000000783433e30] [c000000000009204]
> system_call+0x38/0xb4
> [Fri Dec 1 02:16:57 2017] Instruction dump:
> [Fri Dec 1 02:16:57 2017] 40c2fff4 7c0004ac 2f890001 409d0014 38210030
> e8010010 7c0803a6 4e800020
> [Fri Dec 1 02:16:57 2017] 3d220000 e94981c8 892a0000 69290001 <0b090000>
> 2fa90000 41feffd8 39200001
> [Fri Dec 1 02:16:57 2017] ---[ end trace 16fe4073c33fc91c ]---
> [Fri Dec 1 02:16:57 2017] Unable to handle kernel paging request for data
> at address 0x010d0688
> [Fri Dec 1 02:16:57 2017] Faulting instruction address: 0xd000000007570a30
> [Fri Dec 1 02:16:57 2017] Oops: Kernel access of bad area, sig: 11 [#1]
> [Fri Dec 1 02:16:57 2017] SMP NR_CPUS=2048 NUMA pSeries
> [Fri Dec 1 02:16:57 2017] Modules linked in: hvcs(OE) hvcserver rpadlpar_io
> rpaphp xt_tcpudp xt_nat target_core_pscsi(OE) target_core_file(OE)
> target_core_iblock(OE) target_core_user(OE) uio iscsi_target_mod(OE)
> mmfs26(OE) mmfslinux(OE) tracedev(OE) dccp_diag dccp tcp_diag udp_diag
> inet_diag unix_diag af_packet_diag netlink_diag openvswitch binfmt_misc
> pseries_rng ibmvmc(OE) vmx_crypto rtc_generic xt_conntrack nf_nat_ftp
> nf_conntrack_ftp nf_conntrack_netlink nfnetlink nf_conntrack_netbios_ns
> nf_conntrack_broadcast nf_conntrack_ipv6 nf_defrag_ipv6 nbd br_netfilter
> bridge ib_iser rdma_cm iw_cm ib_cm ib_sa ib_mad ib_core ib_addr vhost_net
> vhost macvtap macvlan iscsi_tcp libiscsi_tcp libiscsi scsi_transport_iscsi
> ip_vs libcrc32c iptable_nat nf_conntrack_ipv4 nf_defrag_ipv4 nf_nat_ipv4
> iptable_mangle iptable_filter
> [Fri Dec 1 02:16:57 2017] ipt_REJECT nf_reject_ipv4 ipt_MASQUERADE
> nf_nat_masquerade_ipv4 nf_nat nf_conntrack ip_tables ip6table_filter
> ip6_tables ebtables x_tables dm_snapshot dm_bufio 8021q garp mrp stp llc
> autofs4 dm_round_robin ses enclosure scsi_transport_sas be2net ibmvscsis(OE)
> target_core_mod(OE) configfs(OE) ibmveth(OE) lpfc vxlan ip6_udp_tunnel
> udp_tunnel scsi_transport_fc ipr scsi_dh_emc scsi_dh_rdac scsi_dh_alua
> dm_multipath
> [Fri Dec 1 02:16:57 2017] CPU: 14 PID: 139667 Comm: targetcli Tainted: G
> W OE 4.4.0-98-generic #121-Ubuntu
> [Fri Dec 1 02:16:57 2017] task: c0000007d39911d0 ti: c000000783430000
> task.ti: c000000783430000
> [Fri Dec 1 02:16:57 2017] NIP: d000000007570a30 LR: d0000000075709c4 CTR:
> c00000000016e220
> [Fri Dec 1 02:16:57 2017] REGS: c000000783433820 TRAP: 0300 Tainted: G
> W OE (4.4.0-98-generic)
> [Fri Dec 1 02:16:57 2017] MSR: 8000000000009033 <SF,EE,ME,IR,DR,RI,LE> CR:
> 42242848 XER: 00000000
> [Fri Dec 1 02:16:57 2017] CFAR: c000000000008468 DAR: 00000000010d0688
> DSISR: 40000000 SOFTE: 1
> GPR00: d0000000075709c4 c000000783433aa0
> d00000000757fdf8 0000000000000001
> GPR04: 0000000002400000 c00000078264e410
> 0000000000000001 0000000000000000
> GPR08: 00000000010d0680 d000000007f61d50
> d00000000757fdf8 d0000000075765f0
> GPR12: c00000000016e220 c00000000fb48500
> 00003fffd23170f0 0000000000000000
> GPR16: 0000000000000000 00000000103b7d00
> 0000000000000000 0000000000000000
> GPR20: c0000007d5379aa0 c0000004d39b5280
> 0000000000000000 0000000000000024
> GPR24: c00000078264e400 c0000004d39b5280
> d000000007570910 c0000007637e0200
> GPR28: c000000518b7e488 c0000007a6367810
> c00000078264e400 d000000007f6db50
> [Fri Dec 1 02:16:57 2017] NIP [d000000007570a30]
> configfs_open_file+0x120/0x260 [configfs]
> [Fri Dec 1 02:16:57 2017] LR [d0000000075709c4]
> configfs_open_file+0xb4/0x260 [configfs]
> [Fri Dec 1 02:16:57 2017] Call Trace:
> [Fri Dec 1 02:16:57 2017] [c000000783433aa0] [d0000000075709c4]
> configfs_open_file+0xb4/0x260 [configfs] (unreliable)
> [Fri Dec 1 02:16:57 2017] [c000000783433af0] [c0000000002e2d40]
> do_dentry_open+0x2c0/0x460
> [Fri Dec 1 02:16:57 2017] [c000000783433b50] [c0000000002fb388]
> do_last+0x178/0xff0
> [Fri Dec 1 02:16:57 2017] [c000000783433c10] [c0000000002fc41c]
> path_openat+0xcc/0x3c0
> [Fri Dec 1 02:16:57 2017] [c000000783433c90] [c0000000002fe33c]
> do_filp_open+0xfc/0x170
> [Fri Dec 1 02:16:57 2017] [c000000783433db0] [c0000000002e4b30]
> do_sys_open+0x1c0/0x3b0
> [Fri Dec 1 02:16:57 2017] [c000000783433e30] [c000000000009204]
> system_call+0x38/0xb4
> [Fri Dec 1 02:16:57 2017] Instruction dump:
> [Fri Dec 1 02:16:57 2017] 419e00e0 792a07e1 41820020 a13c0000 71290124
> 2f890000 419e00c8 e93f0018
> [Fri Dec 1 02:16:57 2017] 2fa90000 419e00bc 3d420000 3c800240 <eb880008>
> e92a8028 38a00050 608480c0
> [Fri Dec 1 02:16:57 2017] ---[ end trace 16fe4073c33fc91d ]---
>
Kernel WARNING: at include/linux/kref.h:46 is reported just before Kernel Oops.
Both get triggered with configfs module while executing configfs_open_file().
Transferring this bug to Canonical for further debug.
** Affects: linux (Ubuntu)
Importance: Undecided
Assignee: Ubuntu on IBM Power Systems Bug Triage (ubuntu-power-triage)
Status: New
** Tags: architecture-ppc64le bugnameltc-162050 severity-critical
targetmilestone-inin16043
** Tags added: architecture-ppc64le bugnameltc-162050 severity-critical
targetmilestone-inin16043
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https://bugs.launchpad.net/bugs/1735713
Title:
Ubuntu16.04.03: Kernel Oops on targetcli
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