[Lustre-discuss] ldiskfs kernel bug in ldiskfs_mb_use_best_found
Alex Zhuravlev
Alex.Zhuravlev at sun.com
Mon Jun 2 05:08:08 PDT 2008
could you also send me your mballoc.c please?
thanks, Alex
Aaron Knister wrote:
> Thanks so much for looking into this. Here's what I got from dmesg.
> Interestingly enough every time it panics the CPU listed is #4...do you
> think that points to a hardware problem? -
>
> ----------- [cut here ] --------- [please bite here ] ---------
> Kernel BUG at ...build/BUILD/lustre-ldiskfs-3.0.4/ldiskfs/mballoc.c:1334
> invalid opcode: 0000 [1] SMP
> last sysfs file:
> /devices/pci0000:00/0000:00:02.0/0000:01:00.0/0000:02:02.0/0000:04:00.1/irq
> CPU 4
> Modules linked in: obdfilter(U) fsfilt_ldiskfs(U) ost(U) mgc(U)
> ldiskfs(U) crc16(U) lustre(U) lov(U) lquota(U) mdc(U) ko2iblnd(U)
> ptlrpc(U) obdclass(
> U) lnet(U) lvfs(U) libcfs(U) netconsole(U) autofs4(U) hidp(U) rfcomm(U)
> l2cap(U) bluetooth(U) sunrpc(U) ip6t_REJECT(U) xt_tcpudp(U)
> ip6table_filter(U
> ) ip6_tables(U) x_tables(U) ipv6(U) ib_iser(U) libiscsi(U)
> scsi_transport_iscsi(U) rdma_ucm(U) ib_ucm(U) ib_srp(U) ib_sdp(U)
> rdma_cm(U) ib_cm(U) iw_c
> m(U) ib_addr(U) ib_local_sa(U) ib_ipoib(U) ib_sa(U) ib_uverbs(U)
> ib_umad(U) dm_multipath(U) video(U) sbs(U) backlight(U) i2c_ec(U)
> button(U) battery(
> U) asus_acpi(U) acpi_memhotplug(U) ac(U) parport_pc(U) lp(U) parport(U)
> ib_mthca(U) ib_mad(U) i2c_i801(U) e1000(U) ide_cd(U) ib_core(U)
> shpchp(U) i2c
> _core(U) cdrom(U) sg(U) pcspkr(U) dm_snapshot(U) dm_zero(U) dm_mirror(U)
> dm_mod(U) ata_piix(U) ahci(U) megaraid_sas(U) sata_sil(U) libata(U)
> sd_mod(U
> ) scsi_mod(U) ext3(U) jbd(U) ehci_hcd(U) ohci_hcd(U) uhci_hcd(U)
> Pid: 5717, comm: ll_ost_io_11 Tainted: GF
> 2.6.18-53.1.13.el5_lustre.1.6.4.3smp #1
> RIP: 0010:[<ffffffff8885a01f>] [<ffffffff8885a01f>]
> :ldiskfs:ldiskfs_mb_use_best_found+0xef/0x520
> RSP: 0018:ffff81040e4dd320 EFLAGS: 00010246
> RAX: 0000000000000000 RBX: ffff81040e4dd3d0 RCX: 000000000000007f
> RDX: ffff810406833000 RSI: ffff8103a8250000 RDI: 0000000000001000
> RBP: 0000000000000800 R08: 0000000000000020 R09: 0000000000000010
> R10: ffff81037d136ff8 R11: 0000000000008000 R12: ffff81040e4dd470
> R13: 0000000000010000 R14: 0000000000000020 R15: 0000000000000800
> FS: 00002aaaaaac0220(0000) GS:ffff81042fc20b40(0000)
> knlGS:0000000000000000
> CS: 0010 DS: 0000 ES: 0000 CR0: 000000008005003b
> CR2: 00002aaaae2ad0a0 CR3: 000000041c6d1000 CR4: 00000000000006e0
> Process ll_ost_io_11 (pid: 5717, threadinfo ffff81040e4dc000, task
> ffff81041228a040)
> Stack: ffff81040e4dd4c0 ffff81040e4dd470 000000000000000b 0000000000010000
> 0000000000010000 0000000000000020 ffff81040e4dd4c0 ffffffff8885cd4e
> ffff81038c2b0a38 0000000000000010 ffff81040e4dd4a0 0000000000000000
> Call Trace:
> [<ffffffff8885cd4e>] :ldiskfs:ldiskfs_mb_regular_allocator+0x66e/0xd50
> [<ffffffff888443c2>] :ldiskfs:ldiskfs_mark_inode_dirty+0x132/0x160
> [<ffffffff88859664>] :ldiskfs:ldiskfs_mb_initialize_context+0x144/0x160
> [<ffffffff8885e1e6>] :ldiskfs:ldiskfs_mb_new_blocks+0x166/0x280
> [<ffffffff888bf091>] :fsfilt_ldiskfs:ldiskfs_ext_new_extent_cb+0x301/0x640
> [<ffffffff8000a63f>] get_page_from_freelist+0x223/0x3cf
> [<ffffffff882390b0>] :ib_mthca:mthca_arbel_post_send+0x5a2/0x5b4
> [<ffffffff88856d27>] :ldiskfs:ldiskfs_ext_walk_space+0x1b7/0x250
> [<ffffffff888bed90>] :fsfilt_ldiskfs:ldiskfs_ext_new_extent_cb+0x0/0x640
> [<ffffffff80054ccc>] mwait_idle+0x0/0x4a
> [<ffffffff888ba9ae>] :fsfilt_ldiskfs:fsfilt_map_nblocks+0xfe/0x150
> [<ffffffff888eee08>] :obdfilter:filter_direct_io+0x478/0xce0
> [<ffffffff888f14de>] :obdfilter:filter_commitrw_write+0x184e/0x2570
> [<ffffffff8005a2ea>] cache_alloc_refill+0x106/0x186
> [<ffffffff8003ce86>] lock_timer_base+0x1b/0x3c
> [<ffffffff8889eb46>] :ost:ost_brw_write+0x21b6/0x28c0
> [<ffffffff80088431>] default_wake_function+0x0/0xe
> [<ffffffff888a283e>] :ost:ost_handle+0x2a8e/0x58d8
> [<ffffffff88603c82>] :obdclass:class_handle2object+0xd2/0x160
> [<ffffffff8869f230>] :ptlrpc:lustre_swab_ptlrpc_body+0x0/0x90
> [<ffffffff8869cde5>] :ptlrpc:lustre_swab_buf+0xc5/0xf0
> [<ffffffff886a4a3b>] :ptlrpc:ptlrpc_server_handle_request+0xb0b/0x1270
> [<ffffffff80060f29>] thread_return+0x0/0xeb
> [<ffffffff8006b6c9>] do_gettimeofday+0x50/0x92
> [<ffffffff8855d056>] :libcfs:lcw_update_time+0x16/0x100
> [<ffffffff8003ce86>] lock_timer_base+0x1b/0x3c
> [<ffffffff886a747c>] :ptlrpc:ptlrpc_main+0x7dc/0x950
> [<ffffffff80088431>] default_wake_function+0x0/0xe
> [<ffffffff8005bfb1>] child_rip+0xa/0x11
> [<ffffffff886a6ca0>] :ptlrpc:ptlrpc_main+0x0/0x950
> [<ffffffff8005bfa7>] child_rip+0x0/0x11
>
>
> Code: 0f 0b 68 50 5c 86 88 c2 36 05 0f 1f 80 00 00 00 00 48 8b 43
> RIP [<ffffffff8885a01f>] :ldiskfs:ldiskfs_mb_use_best_found+0xef/0x520
> RSP <ffff81040e4dd320>
> <0>Kernel panic - not syncing: Fatal exception
>
>
> On Jun 2, 2008, at 3:40 AM, Alex Zhuravlev wrote:
>
>> what about dmesg output? it's unlikely lustre debug can help here as
>> the problem
>> seem to be very internal to ldiskfs (mballoc piece of it)
>>
>> thanks, Alex
>>
>> Aaron Knister wrote:
>>> I bumped up debugging, and here's (below) the last bit of debugging
>>> info from lustre that I have on the oss before it went belly up. My
>>> system is totally inoperable. Does anybody have any ideas?
>>>
>>> 00010000:00001000:4:1212157576.884909:0:6378:0:(ldlm_resource.c:865:ldlm_resource_add_lock())
>>>
>>> About to add this lock:
>>> 00010000:00001000:4:1212157576.884910:0:6378:0:(ldlm_lock.c:1718:ldlm_lock_dump())
>>>
>>> -- Lock dump: ffff81036e61f1c0/0x1fb135e1e3fd2cc6 (rc: 3) (pos: 0)
>>> (pid:6378)
>>> 00010000:00001000:4:1212157576.884913:0:6378:0:(ldlm_lock.c:1726:ldlm_lock_dump())
>>>
>>> Node: local
>>> 00010000:00001000:4:1212157576.884914:0:6378:0:(ldlm_lock.c:1735:ldlm_lock_dump())
>>>
>>> Resource: ffff8103849211c0 (3129942/0)
>>> 00010000:00001000:4:1212157576.884915:0:6378:0:(ldlm_lock.c:1740:ldlm_lock_dump())
>>>
>>> Req mode: PW, grant mode: PW, rc: 3, read: 0, write: 1 flags: 0x80004000
>>> 00010000:00001000:4:1212157576.884917:0:6378:0:(ldlm_lock.c:1746:ldlm_lock_dump())
>>>
>>> Extent: 0 -> 18446744073709551615 (req 0-18446744073709551615)
>>> 00010000:00000040:4:1212157576.884920:0:6378:0:(ldlm_lock.c:615:ldlm_lock_decref_internal())
>>>
>>> forcing cancel of local lock
>>> 00010000:00000010:4:1212157576.884922:0:6378:0:(ldlm_lockd.c:1357:ldlm_bl_to_thread())
>>>
>>> kmalloced 'blwi': 120 at ffff81040e90a340 (tot 49135175)
>>> 00002000:00000040:4:1212157576.884925:0:6378:0:(lustre_fsfilt.h:194:fsfilt_start_log())
>>>
>>> started handle ffff8103766dfc78 (0000000000000000)
>>> 00002000:00000040:4:1212157576.884930:0:6378:0:(lustre_fsfilt.h:270:fsfilt_commit())
>>>
>>> committing handle ffff8103766dfc78
>>> 00002000:00000040:4:1212157576.884931:0:6378:0:(lustre_fsfilt.h:194:fsfilt_start_log())
>>>
>>> started handle ffff8103766dfc78 (0000000000000000)
>>> 00000020:00000040:4:1212157576.884957:0:5557:0:(lustre_handles.c:121:class_handle_unhash_nolock())
>>>
>>> removing object ffff81036e61f1c0 with handle 0x1fb135e1e3fd2cc6 from
>>> hash
>>> 00000100:00000010:4:1212157576.884960:0:5557:0:(client.c:394:ptlrpc_prep_set())
>>>
>>> kmalloced 'set': 104 at ffff8104012d38c0 (tot 49135279)
>>> 00000100:00000010:4:1212157576.884962:0:5557:0:(client.c:457:ptlrpc_set_destroy())
>>>
>>> kfreed 'set': 104 at ffff8104012d38c0 (tot 49135175).
>>> 00010000:00000040:4:1212157576.884964:0:5557:0:(ldlm_resource.c:818:ldlm_resource_putref())
>>>
>>> putref res: ffff8103849211c0 count: 0
>>> 00010000:00000010:4:1212157576.884969:0:5557:0:(ldlm_resource.c:828:ldlm_resource_putref())
>>>
>>> kfreed 'res->lr_lvb_data': 40 at ffff810379ded880 (tot 49135135).
>>> 00010000:00000010:4:1212157576.885000:0:5557:0:(ldlm_resource.c:829:ldlm_resource_putref())
>>>
>>> slab-freed 'res': 224 at ffff8103849211c0 (tot 49135135).
>>> 00010000:00000010:4:1212157576.885002:0:5557:0:(ldlm_lockd.c:1657:ldlm_bl_thread_main())
>>>
>>> kfreed 'blwi': 120 at ffff81040e90a340 (tot 49134791).
>>> 00002000:00000040:4:1212157576.885623:0:6378:0:(lustre_fsfilt.h:270:fsfilt_commit())
>>>
>>> committing handle ffff8103766dfc78
>>> 00002000:00000002:4:1212157576.885625:0:6378:0:(filter.c:148:f_dput())
>>> putting 3129942: ffff8103599cea98, count = 0
>>> 00002000:00080000:4:1212157576.885627:0:6378:0:(filter.c:2689:filter_destroy_precreated())
>>>
>>> crew4-OST0001: after destroy: set last_objids[0] = 3129941
>>> 00002000:00000002:4:1212157576.885630:0:6378:0:(filter.c:607:filter_update_last_objid())
>>>
>>> crew4-OST0001: server last_objid for group 0: 3129941
>>> 00002000:00000010:4:1212157576.912615:0:6485:0:(fsfilt-ldiskfs.c:747:fsfilt_ldiskfs_cb_func())
>>>
>>> slab-freed 'fcb': 56 at ffff810371404920 (tot 49134335).
>>> 00010000:00000040:4:1212157576.912669:0:6378:0:(ldlm_lib.c:1556:target_committed_to_req())
>>>
>>> last_committed 17896268, xid 3841
>>> 00000100:00000040:4:1212157576.912674:0:6378:0:(connection.c:191:ptlrpc_connection_addref())
>>>
>>> connection=ffff8103fbe9e2c0 refcount 10 to 172.18.0.10
>>> <http://172.18.0.10>@o2ib
>>> 00000100:00000040:4:1212157576.912678:0:6378:0:(niobuf.c:46:ptl_send_buf())
>>>
>>> conn=ffff8103fbe9e2c0 id 12345-172.18.0.10 at o2ib
>>> 00000400:00000010:4:1212157576.912680:0:6378:0:(lib-lnet.h:247:lnet_md_alloc())
>>>
>>> kmalloced 'md': 136 at ffff81040cb6cb80 (tot 9568949).
>>> 00000400:00000010:4:1212157576.912683:0:6378:0:(lib-lnet.h:295:lnet_msg_alloc())
>>>
>>> kmalloced 'msg': 336 at ffff8104285e1e00 (tot 9569285).
>>> 00000100:00000040:4:1212157576.912693:0:6378:0:(connection.c:150:ptlrpc_put_connection())
>>>
>>> connection=ffff8103fbe9e2c0 refcount 9 to 172.18.0.10
>>> <http://172.18.0.10>@o2ib
>>> 00000100:00000040:4:1212157576.912695:0:6378:0:(service.c:648:ptlrpc_server_handle_request())
>>>
>>> RPC PUTting export ffff8103848e9000 : new rpc_count 0
>>> 00000100:00000040:4:1212157576.912697:0:6378:0:(service.c:648:ptlrpc_server_handle_request())
>>>
>>> PUTting export ffff8103848e9000 : new refcount 4
>>> 00000100:00000040:4:1212157576.912699:0:6378:0:(service.c:652:ptlrpc_server_handle_request())
>>>
>>> PUTting export ffff8103848e9000 : new refcount 3
>>> 00000400:00000010:4:1212157576.912741:0:5351:0:(lib-lnet.h:269:lnet_md_free())
>>>
>>> kfreed 'md': 136 at ffff81040cb6cb80 (tot 9569149).
>>> 00000400:00000010:4:1212157576.912744:0:5351:0:(lib-lnet.h:312:lnet_msg_free())
>>>
>>> kfreed 'msg': 336 at ffff8104285e1e00 (tot 9568813).
>>>
>>>
>>> On Wed, May 28, 2008 at 8:03 PM, Aaron Knister <aaron.knister at gmail.com
>>> <mailto:aaron.knister at gmail.com>> wrote:
>>>
>>> Thank you very much for looking into this. I've attached my dmesg to
>>> the bug. i looked at line number 1334 which the panic seems to
>>> reference. i can't figure out what its doing though
>>>
>>> On Wed, May 28, 2008 at 4:54 PM, Alex Zhuravlev
>>> <Alex.Zhuravlev at sun.com <mailto:Alex.Zhuravlev at sun.com>> wrote:
>>>
>>> Aaron Knister wrote:
>>>
>>> I'm seeing this bug (14465) under heavy load on my OSSes. If
>>> I reboot the MDS it appears to help...any ideas? What's the
>>> status on this bug?
>>>
>>>
>>> could you attach your dmesg to the bug? as for the status - I'm
>>> still not
>>> able to reproduce this, neither I found possible cause, sorry.
>>>
>>> thanks, Alex
>>>
>>>
>>>
>>
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