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[ex.vitorino at gmail.com]

Hi list,

After a lot of testing + troubleshooting, I guess I'm observing
what I am now calling a regression with zaptel 1.4.10 (is it?)
As such I call for peer feedback, before either asking Digium
install support or filing a bug.

Thanks in advance!
System: HP Proliant DL380 G5 with 2x PCI-X + 1x PCIe riser card
OS: Centos 5
Kernel: 2.6.18-53.1.14.el5 (also tested under 2.6.18-53.el5)
HW: Digium TE220B, the one with HW echo cancellation
(configured as 2x E1 via jumpers)

Context: Pre-site installation of system, no E1 conectivity
(loopbacks tested)


/etc/zaptel.conf:
span=1,1,0,ccs,hdb3,crc4
bchan=25-39,41-55
dchan=40
span=2,2,0,ccs,hdb3,crc4
bchan=56-70,72-86
dchan=71


Under zaptel 1.4.10, when ztcfg runs this gets logged in the kernel
buffer:

About to enter spanconfig!
Done with spanconfig!
About to enter spanconfig!
Done with spanconfig!
About to enter startup!
TE2XXP: Span 1 configured for CCS/HDB3/CRC4
timing source auto card 0!
wct2xxp: Setting yellow alarm on span 1
timing source auto card 0!
SPAN 1: Primary Sync Source
VPM400: Not Present
VPM450: echo cancellation for 64 channels
BUG: soft lockup detected on CPU#0!
[<c044d448>] softlockup_tick+0x96/0xa4
[<c042ddc8>] update_process_times+0x39/0x5c
[<c04196f7>] smp_apic_timer_interrupt+0x5b/0x6c
[<c04059bf>] apic_timer_interrupt+0x1f/0x24
[<f89bc1e7>] init_vpm450m+0x32d/0x34a [wct4xxp]
[<f89a3b11>] t4_vpm450_init+0x18ce/0x198c [wct4xxp]
[<f89a7ee4>] t4_startup+0x4315/0x43c7 [wct4xxp]
[<c042621c>] release_console_sem+0x17e/0x1b8
[<c0407406>] do_IRQ+0xa5/0xae
[<f8994311>] t4_dacs+0x211/0x24b [wct4xxp]
[<f8a01f6a>] zt_ioctl+0x273/0x144f [zaptel]
[<c0457600>] mempool_alloc+0x28/0xc9
[<c04ddd33>] cfq_resort_rr_list+0x23/0x8b
[<c04deb6c>] cfq_add_crq_rb+0xba/0xc3
[<c04dec72>] cfq_insert_request+0x42/0x498
[<c04d5175>] elv_insert+0x10a/0x1ad
[<c04d908b>] __make_request+0x31d/0x366
[<c04de8b1>] cfq_dispatch_requests+0x26a/0x46b
[<c04dde27>] __cfq_slice_expired+0x8c/0xa5
[<c04de8b1>] cfq_dispatch_requests+0x26a/0x46b
[<c04d505d>] elv_next_request+0x15c/0x16a
[<f88bc101>] start_io+0x77/0xdc [cciss]
[<f88bf63e>] do_cciss_request+0x32c/0x337 [cciss]
[<f88ccff0>] __split_bio+0x408/0x418 [dm_mod]
[<f88cd6a6>] dm_request+0xce/0xd4 [dm_mod]
[<c04d6a81>] generic_make_request+0x248/0x258
[<c04d8734>] submit_bio+0xbf/0xc5
[<c04548e2>] find_get_page+0x18/0x38
[<c04719ad>] __find_get_block_slow+0xfb/0x105
[<c0471cea>] __find_get_block+0x15c/0x166
[<c0471cea>] __find_get_block+0x15c/0x166
[<c0471d24>] __getblk+0x30/0x270
[<f885a485>] journal_cancel_revoke+0x8a/0x96 [jbd]
[<f885a472>] journal_cancel_revoke+0x77/0x96 [jbd]
[<f885626f>] __journal_file_buffer+0x10e/0x1e3 [jbd]
[<c041f871>] __wake_up+0x2a/0x3d
[<f8856679>] journal_stop+0x1b0/0x1ba [jbd]
[<c042a209>] current_fs_time+0x4a/0x55
[<c048626d>] touch_atime+0x60/0x8f
[<c04552ee>] do_generic_mapping_read+0x421/0x468
[<c045478b>] file_read_actor+0x0/0xd1
[<c04548e2>] find_get_page+0x18/0x38
[<c0457319>] filemap_nopage+0x192/0x315
[<c046048f>] __handle_mm_fault+0x85e/0x87b
[<c047f46b>] do_ioctl+0x47/0x5d
[<c047f6cb>] vfs_ioctl+0x24a/0x25c
[<c047f725>] sys_ioctl+0x48/0x5f
[<c0404eff>] syscall_call+0x7/0xb
=======================
VPM450: hardware DTMF disabled.
VPM450: Present and operational servicing 2 span(s)
Completed startup!
About to enter startup!
TE2XXP: Span 2 configured for CCS/HDB3/CRC4
wct2xxp: Setting yellow alarm on span 2
timing source auto card 0!
SPAN 2: Secondary Sync Source
Completed startup!


Soft lockup ?! Hmmm... I'm ignorant on this, but it smells fishy !

For completeness sake, driver was previously loaded ok:

Zapata Telephony Interface Registered on major 196
Zaptel Version: 1.4.10
Zaptel Echo Canceller: MG2
ACPI: PCI Interrupt 0000:18:08.0[A] -> GSI 19 (level, low) -> IRQ 98
Found TE2XXP at base address fdff0000, remapped to f8854000
TE2XXP version c01a016a, burst ON
Octasic optimized!
FALC version: 00000005, Board ID: 00
Reg 0: 0x375a2400
Reg 1: 0x375a2000
Reg 2: 0xffffffff
Reg 3: 0x00000000
Reg 4: 0x00003101
Reg 5: 0x00000000
Reg 6: 0xc01a016a
Reg 7: 0x00001300
Reg 8: 0x00000000
Reg 9: 0x00ff2031
Reg 10: 0x0000004a
TE2XXP: Launching card: 0
TE2XXP: Setting up global serial parameters
Found a Wildcard: Wildcard TE220 (4th Gen)


After trying lot's of things (disable ILO, disable USBs, try different kernel,
different TE220B, etc), I figured that this "soft hangup" does not show
under zaptel 1.4.9.2...

In all due honesty, I haven't got the faintest idea what kind of impact this
could have.

Side testing zaptel 1.4.10 on a simpler system, an HP Proliant ML110 (nearly
a PC), the error does not show up as well.


I checked the zaptel 1.4.10 ChangeLog and there are some changes which
I'd suspect:

2008-04-01 16:39 +0000 [r4122] sruffell <sruffell at localhost>:

* kernel/wct4xxp/base.c: Work around for host bridges that generate
fast back to back transactions which the current version of the
quad span cards do not advertise support for.

2008-03-14 16:39 +0000 [r3983-3990] Matthew Fredrickson <creslin at digium.com>

* firmware/Makefile, kernel/wctdm24xxp/base.c,
kernel/wctdm24xxp/GpakApi.c, kernel/wctdm24xxp/GpakApi.h: Update
wctdm24xxp's VPMADT032 firmware to version 1.16

* kernel/wct4xxp/base.c: When doing the ISR rewrite, forgot to
include the vpmdtmfcheck when doing DTMF polling causing it to
check for DTMF events even when it was told not to

(+others)


I need to have this system running in about a week and a half.
What do you guys say ?
--
exvito

[bwentdg at pipeline.com]

Please keep us updated on your "progress".
I am considering putting several of these boxes in
and I would love to hear how this comes out.
Wish I had something to suggest.

Ex Vito wrote:

[sruffell at digium.com]

Ex Vito,

[comments inline]

Ex Vito wrote:

[ex.vitorino at gmail.com]

[ex.vitorino at gmail.com]

[bwentdg at pipeline.com]

Shaun - Could you clarify your post a bit ?

1 - Is the "4 K " stacks a Known Problem ?
a) If so is it known to be problem on any specific Linux distro ?
b) Should ALL installation Check for this PRIOR to doing an
Asterisk Install ?

2) The "branch" you mention below - are "fixes" from it in Any current *
release ?
Shaun Ruffell wrote:

[ex.vitorino at gmail.com]

On Tue, Apr 15, 2008 at 8:37 PM, Al Baker <bwentdg at pipeline.com> wrote:

[ex.vitorino at gmail.com]

On Tue, Apr 15, 2008 at 7:07 PM, Shaun Ruffell <sruffell at digium.com> wrote:

[creslin at digium.com]

Ex Vito wrote:

[sruffell at digium.com]

Hi Al,

Al Baker wrote:

[ex.vitorino at gmail.com]

On Wed, Apr 16, 2008 at 3:26 PM, Matthew Fredrickson <creslin at digium.com> wrote:

[creslin at digium.com]

Shaun Ruffell wrote:

[tzafrir.cohen at xorco...]

On Wed, Apr 16, 2008 at 04:11:52PM +0100, Ex Vito wrote:

[ex.vitorino at gmail.com]

On Wed, Apr 16, 2008 at 4:20 PM, Matthew Fredrickson <creslin at digium.com> wrote:

[ex.vitorino at gmail.com]