Hoi,
Here's a minimal repro that reliably crashes VPP at head for me, does not
crash before gerrit 35640:
create loopback interface instance 0
create bond id 0 mode lacp load-balance l34
create bond id 1 mode lacp load-balance l34
delete loopback interface intfc loop0
delete bond BondEthernet0
delete bond BondEthernet1
create bond id 0 mode lacp load-balance l34
delete bond BondEthernet0
comment { the next command crashes VPP }
create loopback interface instance 0
On Tue, Apr 5, 2022 at 9:48 PM Pim van Pelt <p...@ipng.nl> wrote:
> Hoi,
>
> There is a crashing regression in VPP after
> https://gerrit.fd.io/r/c/vpp/+/35640
>
> With that change merged, VPP crashes upon creation and deletion of
> interfaces. Winding back the repo until before 35640 does not crash. The
> crash happens in
> 0: /home/pim/src/vpp/src/vlib/stats/stats.h:115 (vlib_stats_get_entry)
> assertion `entry_index < vec_len (sm->directory_vector)' fails
>
> (gdb) bt
> #0 __GI_raise (sig=sig@entry=6) at ../sysdeps/unix/sysv/linux/raise.c:50
> #1 0x00007ffff6a5e859 in __GI_abort () at abort.c:79
> #2 0x00000000004072e3 in os_panic () at
> /home/pim/src/vpp/src/vpp/vnet/main.c:413
> #3 0x00007ffff6dada29 in debugger () at
> /home/pim/src/vpp/src/vppinfra/error.c:84
> #4 0x00007ffff6dad7fa in _clib_error (how_to_die=2, function_name=0x0,
> line_number=0, fmt=0x7ffff6f9c19c "%s:%d (%s) assertion `%s' fails")
> at /home/pim/src/vpp/src/vppinfra/error.c:143
> #5 0x00007ffff6f39605 in vlib_stats_get_entry (sm=0x7ffff6fce5e8
> <vlib_stats_main>, entry_index=4294967295)
> at /home/pim/src/vpp/src/vlib/stats/stats.h:115
> #6 0x00007ffff6f39273 in vlib_stats_remove_entry (entry_index=4294967295)
> at /home/pim/src/vpp/src/vlib/stats/stats.c:135
> #7 0x00007ffff6ee36d9 in vlib_register_errors (vm=0x7fff96800740,
> node_index=718, n_errors=0, error_strings=0x0, counters=0x0)
> at /home/pim/src/vpp/src/vlib/error.c:149
> #8 0x00007ffff70b8e0c in setup_tx_node (vm=0x7fff96800740,
> node_index=718, dev_class=0x7fff973f9fb0) at
> /home/pim/src/vpp/src/vnet/interface.c:816
> #9 0x00007ffff70b7f26 in vnet_register_interface (vnm=0x7ffff7f579a0
> <vnet_main>, dev_class_index=31, dev_instance=0, hw_class_index=29,
> hw_instance=7) at /home/pim/src/vpp/src/vnet/interface.c:1085
> #10 0x00007ffff7129efd in vnet_eth_register_interface (vnm=0x7ffff7f579a0
> <vnet_main>, r=0x7fff4b288f18)
> at /home/pim/src/vpp/src/vnet/ethernet/interface.c:376
> #11 0x00007ffff712bd05 in vnet_create_loopback_interface
> (sw_if_indexp=0x7fff4b288fb8, mac_address=0x7fff4b288fb2 "", is_specified=1
> '\001',
> user_instance=0) at /home/pim/src/vpp/src/vnet/ethernet/interface.c:883
> #12 0x00007ffff712fecf in create_simulated_ethernet_interfaces
> (vm=0x7fff96800740, input=0x7fff4b2899d0, cmd=0x7fff973c7e38)
> at /home/pim/src/vpp/src/vnet/ethernet/interface.c:930
> #13 0x00007ffff6ed65e8 in vlib_cli_dispatch_sub_commands
> (vm=0x7fff96800740, cm=0x42c2f0 <vlib_global_main+48>,
> input=0x7fff4b2899d0,
> parent_command_index=1161) at /home/pim/src/vpp/src/vlib/cli.c:592
> #14 0x00007ffff6ed6358 in vlib_cli_dispatch_sub_commands
> (vm=0x7fff96800740, cm=0x42c2f0 <vlib_global_main+48>,
> input=0x7fff4b2899d0,
> parent_command_index=33) at /home/pim/src/vpp/src/vlib/cli.c:549
> #15 0x00007ffff6ed6358 in vlib_cli_dispatch_sub_commands
> (vm=0x7fff96800740, cm=0x42c2f0 <vlib_global_main+48>,
> input=0x7fff4b2899d0,
> parent_command_index=0) at /home/pim/src/vpp/src/vlib/cli.c:549
> #16 0x00007ffff6ed5528 in vlib_cli_input (vm=0x7fff96800740,
> input=0x7fff4b2899d0, function=0x0, function_arg=0)
> at /home/pim/src/vpp/src/vlib/cli.c:695
> #17 0x00007ffff6f61f21 in unix_cli_exec (vm=0x7fff96800740,
> input=0x7fff4b289e78, cmd=0x7fff973c99d8) at
> /home/pim/src/vpp/src/vlib/unix/cli.c:3454
> #18 0x00007ffff6ed65e8 in vlib_cli_dispatch_sub_commands
> (vm=0x7fff96800740, cm=0x42c2f0 <vlib_global_main+48>,
> input=0x7fff4b289e78,
> parent_command_index=0) at /home/pim/src/vpp/src/vlib/cli.c:592
> #19 0x00007ffff6ed5528 in vlib_cli_input (vm=0x7fff96800740,
> input=0x7fff4b289e78, function=0x7ffff6f55960 <unix_vlib_cli_output>,
> function_arg=1)
> at /home/pim/src/vpp/src/vlib/cli.c:695
>
> This is caught by a local regression test (
> https://github.com/pimvanpelt/vppcfg/tree/main/intest) that executes a
> bunch of CLI statements, and I have a set of transitions there which I can
> probably narrow down to an exact repro case.
>
> On Fri, Apr 1, 2022 at 3:08 PM Pim van Pelt via lists.fd.io <pim=
> ipng...@lists.fd.io> wrote:
>
>> Hoi,
>>
>> As a followup - I tried to remember why I copied class VPPStats() and
>> friends into my own repository, but that may be because it's not exported
>> in __init__.py. Should it be? I pulled in the latest changed Damjan made to
>> vpp_stats.py into my own repo, and my app runs again. Is it possibly worth
>> our while to add the VPPStats() class to the exported classes in vpp_papi ?
>>
>> groet,
>> Pim
>>
>> On Fri, Apr 1, 2022 at 2:50 PM Pim van Pelt via lists.fd.io <pim=
>> ipng...@lists.fd.io> wrote:
>>
>>> Hoi,
>>>
>>> I noticed that my VPP SNMP Agent no longer works with the python API at
>>> HEAD, and my attention was drawn to this change:
>>> https://gerrit.fd.io/r/c/vpp/+/35640
>>> stats: convert error counters to normal counters
>>> At HEAD, src/vpp-api/python/vpp_papi/vpp_stats.py now fails 4 out of 6
>>> tests with the same error as my application:
>>> struct.error: offset -140393469444104 out of range for 1073741824-byte
>>> buffer
>>> ..
>>> Ran 6 tests in 0.612s
>>> FAILED (errors=4)
>>>
>>> Damjan, Ole, any clues?
>>>
>>> groet,
>>> Pim
>>> --
>>> Pim van Pelt <p...@ipng.nl>
>>> PBVP1-RIPE - http://www.ipng.nl/
>>>
>>>
>>>
>>>
>>
>> --
>> Pim van Pelt <p...@ipng.nl>
>> PBVP1-RIPE - http://www.ipng.nl/
>>
>>
>>
>>
>
> --
> Pim van Pelt <p...@ipng.nl>
> PBVP1-RIPE - http://www.ipng.nl/
>
--
Pim van Pelt <p...@ipng.nl>
PBVP1-RIPE - http://www.ipng.nl/
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