Comment # 8
on bug 1202541
from Claudio Fontana
I suppose the following is the part that you are interested in in the logs (I
have to guess since you don't mention it).
Since you suspect a problem in the host with migration,
we'd need to have the corresponding host logs, including the libvirt logs, and
if this is a production server, my suggestion would be to refile this as a SLES
12SP5 issue.
But for what I see here, the guest encounters a general protection fault in
"make_kuid" during "filename_lookup", in a low memory condition with OOMed
processes.
I don't see for now an indication that something went wrong with the migration.
2022-08-18T10:31:31.125351+00:00 pontifex2 kernel: [ 5236.588301][T25754]
general protection fault, probably for non-canonical address
0xb110bc3ba3d49fbc: 0000 [#12] PREEMPT SMP NOPTI
2022-08-18T10:31:31.125398+00:00 pontifex2 kernel: [ 5236.591945][T25754] CPU:
5 PID: 25754 Comm: rsyncd Tainted: G D
5.14.21-150400.24.18-default #1 SLE15-SP4
695ab7a8fc20f5ddb345280570966cd1eb06d469
2022-08-18T10:31:31.125409+00:00 pontifex2 kernel: [ 5236.596511][T25754]
Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS
rel-1.12.0-0-ga698c89-rebuilt.suse.com 04/01/2014
2022-08-18T10:31:31.125412+00:00 pontifex2 kernel: [ 5236.600209][T25754] RIP:
0010:__d_lookup_rcu+0x67/0x190
2022-08-18T10:31:31.125415+00:00 pontifex2 kernel: [ 5236.601560][T25754] Code:
e8 49 c1 e9 20 48 8d 04 c2 45 89 ce 41 83 e6 07 48 8b 18 48 83 e3 fe 75 11 e9
92 00 00 00 48 8b 1b 48 85 db 0f 84 86 00 00 00 <8b> 6b fc 4c 3b 63 10 75 eb 48
83 7b 08 00 74 e4 83 e5 fe 41 f6 04
2022-08-18T10:31:31.125417+00:00 pontifex2 kernel: [ 5236.607438][T25754] RSP:
0018:ffffb6dc8c657ae0 EFLAGS: 00010286
2022-08-18T10:31:31.125418+00:00 pontifex2 kernel: [ 5236.609482][T25754] RAX:
ffff8bc91c95dd50 RBX: b110bc3ba3d49fc0 RCX: 0000000000000009
2022-08-18T10:31:31.125420+00:00 pontifex2 kernel: [ 5236.612927][T25754] RDX:
ffff8bc91b680000 RSI: ffffb6dc8c657c20 RDI: ffff8bb59caf7d40
2022-08-18T10:31:31.125422+00:00 pontifex2 kernel: [ 5236.615312][T25754] RBP:
00000000d410fd7a R08: ffffb6dc8c657c20 R09: 0000000000000038
2022-08-18T10:31:31.125423+00:00 pontifex2 kernel: [ 5236.617599][T25754] R10:
ffff8bb24603a050 R11: 0000003800000000 R12: ffff8bb59caf7d40
2022-08-18T10:31:31.125427+00:00 pontifex2 kernel: [ 5236.624006][T25754] R13:
000000384b7755c2 R14: 0000000000000000 R15: ffffb6dc8c657d50
2022-08-18T10:31:31.125428+00:00 pontifex2 kernel: [ 5236.627676][T25754] FS:
00007fa500e97740(0000) GS:ffff8bc91fb40000(0000) knlGS:0000000000000000
2022-08-18T10:31:31.125430+00:00 pontifex2 kernel: [ 5236.629963][T25754] CS:
0010 DS: 0000 ES: 0000 CR0: 0000000080050033
2022-08-18T10:31:31.125431+00:00 pontifex2 kernel: [ 5236.631707][T25754] CR2:
0000556e9bb18fd0 CR3: 00000001cee98000 CR4: 00000000000406e0
2022-08-18T10:31:31.125433+00:00 pontifex2 kernel: [ 5236.633849][T25754] Call
Trace:
2022-08-18T10:31:31.125435+00:00 pontifex2 kernel: [ 5236.634763][T25754]
<TASK>
2022-08-18T10:31:31.125436+00:00 pontifex2 kernel: [ 5236.635767][T25754] ?
make_kuid+0xf/0x20
2022-08-18T10:31:31.125439+00:00 pontifex2 kernel: [ 5236.636949][T25754] ?
generic_permission+0x92/0x210
2022-08-18T10:31:31.125440+00:00 pontifex2 kernel: [ 5236.638620][T25754]
lookup_fast+0x45/0x150
2022-08-18T10:31:31.125442+00:00 pontifex2 kernel: [ 5236.639729][T25754]
walk_component+0x40/0x1a0
2022-08-18T10:31:31.125443+00:00 pontifex2 kernel: [ 5236.641185][T25754] ?
path_init+0x5a/0x370
2022-08-18T10:31:31.125445+00:00 pontifex2 kernel: [ 5236.642218][T25754]
path_lookupat+0x69/0x140
2022-08-18T10:31:31.125447+00:00 pontifex2 kernel: [ 5236.643875][T25754] ?
make_kuid+0xf/0x20
2022-08-18T10:31:31.125448+00:00 pontifex2 kernel: [ 5236.646268][T25754]
filename_lookup+0xe0/0x1c0
2022-08-18T10:31:31.125450+00:00 pontifex2 kernel: [ 5236.647686][T25754] ?
try_to_unlazy+0x47/0x80
2022-08-18T10:31:31.125451+00:00 pontifex2 kernel: [ 5236.649171][T25754] ?
terminate_walk+0x64/0xf0
2022-08-18T10:31:31.125453+00:00 pontifex2 kernel: [ 5236.650455][T25754] ?
kmem_cache_alloc+0x4d/0x4c0
2022-08-18T10:31:31.125455+00:00 pontifex2 kernel: [ 5236.651903][T25754] ?
path_lookupat+0x98/0x140
2022-08-18T10:31:31.125457+00:00 pontifex2 kernel: [ 5236.653071][T25754] ?
vfs_statx+0x72/0x120
2022-08-18T10:31:31.125459+00:00 pontifex2 kernel: [ 5236.654256][T25754]
vfs_statx+0x72/0x120
2022-08-18T10:31:31.125461+00:00 pontifex2 kernel: [ 5236.655240][T25754]
__do_sys_newlstat+0x39/0x70
2022-08-18T10:31:31.125463+00:00 pontifex2 kernel: [ 5236.656504][T25754] ?
_copy_to_user+0x1c/0x30
2022-08-18T10:31:31.125465+00:00 pontifex2 kernel: [ 5236.657584][T25754] ?
cp_new_stat+0x150/0x190
2022-08-18T10:31:31.125466+00:00 pontifex2 kernel: [ 5236.658798][T25754]
do_syscall_64+0x5b/0x80
2022-08-18T10:31:31.125468+00:00 pontifex2 kernel: [ 5236.659978][T25754] ?
__do_sys_newlstat+0x48/0x70
2022-08-18T10:31:31.125469+00:00 pontifex2 kernel: [ 5236.661531][T25754] ?
syscall_exit_to_user_mode+0x18/0x40
2022-08-18T10:31:31.125470+00:00 pontifex2 kernel: [ 5236.662952][T25754] ?
do_syscall_64+0x67/0x80
2022-08-18T10:31:31.125472+00:00 pontifex2 kernel: [ 5236.664062][T25754] ?
exc_page_fault+0x67/0x150
2022-08-18T10:31:31.125473+00:00 pontifex2 kernel: [ 5236.665414][T25754]
entry_SYSCALL_64_after_hwframe+0x61/0xcb
2022-08-18T10:31:31.125476+00:00 pontifex2 kernel: [ 5236.666839][T25754] RIP:
0033:0x7fa4ff695f35
2022-08-18T10:31:31.125478+00:00 pontifex2 kernel: [ 5236.668055][T25754] Code:
c3 0f 1f 40 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 83 ff 01 48 89
f0 77 30 48 89 c7 48 89 d6 b8 06 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 03 f3 c3
90 48 8b 15 29 2f 2e 00 f7 d8 64 89
2022-08-18T10:31:31.125481+00:00 pontifex2 kernel: [ 5236.673275][T25754] RSP:
002b:00007ffc18328098 EFLAGS: 00000246 ORIG_RAX: 0000000000000006
2022-08-18T10:31:31.125482+00:00 pontifex2 kernel: [ 5236.675135][T25754] RAX:
ffffffffffffffda RBX: 0000000000000000 RCX: 00007fa4ff695f35
2022-08-18T10:31:31.125485+00:00 pontifex2 kernel: [ 5236.677428][T25754] RDX:
00007ffc183281c0 RSI: 00007ffc183281c0 RDI: 00007ffc18328250
2022-08-18T10:31:31.125487+00:00 pontifex2 kernel: [ 5236.679413][T25754] RBP:
0000000000000000 R08: 00007ffc183282b8 R09: 0000000000000000
2022-08-18T10:31:31.125489+00:00 pontifex2 kernel: [ 5236.681350][T25754] R10:
2e3030333035312d R11: 0000000000000246 R12: 00007ffc18328250
2022-08-18T10:31:31.125491+00:00 pontifex2 kernel: [ 5236.683128][T25754] R13:
00007ffc183281c0 R14: 0000000000000002 R15: 0000000000000004
2022-08-18T10:31:31.125492+00:00 pontifex2 kernel: [ 5236.685106][T25754]
</TASK>
2022-08-18T10:31:31.125494+00:00 pontifex2 kernel: [ 5236.685809][T25754]
Modules linked in: tcp_diag inet_diag xt_comment iptable_raw ip6table_raw xt_CT
nfsv3 rpcsec_gss_krb5 nfsv4 dns_resolver nfs fscache netfs af_packet iscsi_ibft
iscsi_boot_sysfs rfkill xt_pkttype xt_tcpudp ip6t_REJECT nf_reject_ipv6
ipt_REJECT nf_reject_ipv4 iptable_filter bpfilter ip6table_mangle
nf_conntrack_netbios_ns nf_conntrack_broadcast xt_conntrack nf_conntrack
nf_defrag_ipv6 nf_defrag_ipv4 ip6table_filter ip6_tables cirrus kvm_amd
drm_kms_helper ccp xfs cec libcrc32c rc_core joydev virtio_balloon virtio_net
net_failover failover kvm syscopyarea sysfillrect sysimgblt fb_sys_fops
i2c_piix4 pcspkr button irqbypass nfsd auth_rpcgss nfs_acl lockd grace drm fuse
sunrpc configfs ip_tables x_tables ext4 crc16 mbcache jbd2 crc32_pclmul
crc32c_intel ata_generic ghash_clmulni_intel ata_piix ahci libahci aesni_intel
uhci_hcd ehci_hcd crypto_simd cryptd libata usbcore serio_raw virtio_blk floppy
qemu_fw_cfg sg dm_multipath dm_mod scsi_dh_rdac scsi_dh_emc
2022-08-18T10:31:31.125497+00:00 pontifex2 kernel: [ 5236.685914][T25754]
scsi_dh_alua scsi_mod
2022-08-18T10:31:31.125498+00:00 pontifex2 kernel: [ 5236.710801][T25754]
Supported: Yes
2022-08-18T10:31:31.125500+00:00 pontifex2 kernel: [ 5236.711917][T25754] ---[
end trace dcd867a75c208976 ]---