[LU-9517] Ubuntu16 client: LBUG ASSERTION( npages <= page_pools.epp_free_pages ) failed

• Type: Bug
• Resolution: Duplicate
• Priority: Minor
• Affects Version/s: Lustre 2.10.0
• Environment: client: Ubuntu 16, kernel: 4.4.0-71-generic; server: lustre-master #3578
• Severity: 3
• Assignee: WC Triage
• Reporter: Sarah Liu

Description

Hit LBUG when try to load module on client

Started at Tue May 16 21:19:42 UTC 2017
Lustre is not mounted, trying to do setup ... 
Stopping clients: trevis-73vm7.trevis.hpdd.intel.com,trevis-73vm8 /mnt/lustre (opts:)
Stopping clients: trevis-73vm7.trevis.hpdd.intel.com,trevis-73vm8 /mnt/lustre2 (opts:)
trevis-73vm8: trevis-73vm8.trevis.hpdd.intel.com: executing set_hostid
trevis-73vm10: trevis-73vm10.trevis.hpdd.intel.com: executing set_hostid
trevis-73vm9: trevis-73vm9.trevis.hpdd.intel.com: executing set_hostid
Loading modules from /usr/lib64/lustre
detected 1 online CPUs by sysfs
libcfs will create CPU partition based on online CPUs
[12118.323703] LustreError: 27:0:(sec_bulk.c:188:enc_pools_release_free_pages()) ASSERTION( npages <= page_pools.epp_free_pages ) failed: 
[12118.324790] LustreError: 27:0:(sec_bulk.c:188:enc_pools_release_free_pages()) LBUG
[12118.325548] Kernel panic - not syncing: LBUG
[12118.325903] CPU: 0 PID: 27 Comm: kswapd0 Tainted: G           OE   4.4.0-71-generic #92-Ubuntu
[12118.326565] Hardware name: Red Hat KVM, BIOS 0.5.1 01/01/2007
[12118.327019]  0000000000000086 000000007416c949 ffff880076453b70 ffffffff813f82b3
[12118.327656]  ffffffffc0316e1c ffff880076453c08 ffff880076453bf8 ffffffff8118d367
[12118.328299]  ffffffff00000008 ffff880076453c08 ffff880076453ba0 000000007416c949
[12118.328772] Call Trace:
[12118.328772]  [<ffffffff813f82b3>] dump_stack+0x63/0x90
[12118.328772]  [<ffffffff8118d367>] panic+0xd3/0x215
[12118.328772]  [<ffffffffc02fa799>] lbug_with_loc+0x59/0xa0 [libcfs]
[12118.328772]  [<ffffffffc05af758>] enc_pools_shrink_scan+0x458/0x510 [ptlrpc]
[12118.328772]  [<ffffffff811bb213>] ? list_lru_count_one+0x23/0x30
[12118.328772]  [<ffffffff811a2533>] shrink_slab.part.40+0x203/0x420
[12118.328772]  [<ffffffff811a6b08>] shrink_zone+0x2c8/0x2e0
[12118.328772]  [<ffffffff811a7bee>] kswapd+0x51e/0x990
[12118.328772]  [<ffffffff811a76d0>] ? mem_cgroup_shrink_node_zone+0x1c0/0x1c0
[12118.328772]  [<ffffffff810a0be8>] kthread+0xd8/0xf0
[12118.328772]  [<ffffffff810a0b10>] ? kthread_create_on_node+0x1e0/0x1e0
[12118.328772]  [<ffffffff8183ca0f>] ret_from_fork+0x3f/0x70
[12118.328772]  [<ffffffff810a0b10>] ? kthread_create_on_node+0x1e0/0x1e0
[12118.328772] Kernel Offset: disabled
[12118.328772] ---[ end Kernel panic - not syncing: LBUG

system info

root@trevis-73vm8:~# uname -a
Linux trevis-73vm8.trevis.hpdd.intel.com 4.4.0-71-generic #92-Ubuntu SMP Fri Mar 24 12:59:01 UTC 2017 x86_64 x86_64 x86_64 GNU/Linux

root@trevis-73vm8:~# lctl --version
lctl 2.9.57_31_ge0deeb2

root@trevis-73vm8:~# dpkg -l | grep lustre
ii  lustre-client-modules-4.4.0-71-generic 2.9.57-31-ge0deeb2-1                       amd64        Lustre Linux kernel module (kernel 4.4.0-71-generic)
ii  lustre-dev                             2.9.57-31-ge0deeb2-1                       amd64        Development files for the Lustre filesystem
iU  lustre-source                          2.9.57-31-ge0deeb2-1                       all          source for Lustre filesystem client kernel modules
ii  lustre-tests                           2.9.57-31-ge0deeb2-1                       amd64        Test suite for the Lustre filesystem
ii  lustre-utils                           2.9.57-31-ge0deeb2-1                       amd64        Userspace utilities for the Lustre filesystem

Issue Links

• is related to: LU-9458 LustreError: 12764:0:(sec_bulk.c:188:enc_pools_release_free_pages()) ASSERTION( npages <= page_pools.epp_free_pages ) failed: