Crash in RTE_TIMER

Crash in RTE_TIMER

[Nishant Verma]

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Hi,

I am facing one issue in rte_timer. The description is quite generic.

*Setup*:
I am using DPDK 21.11
OS: Centos 7.9
CPU: Intel(R) Xeon(R) CPU D-1581 @ 1.80GHz
NIC: SR-IOV on X552
Process: Single primary process(one core, one instance) only

*Earlier Running Application: *
We built our app as a library and used that lib while building the DPDK
app.
For example:
We have some c source code that we build libMY_APP.a This library was
included in an application that is using DPDK libs as well. Consider this
application as an extension to the l3fwd app present in the example
section. It works well. [BINARY = DPDK_APP(l3fwd based app) + libMY_APP.a ]


*Changed APP:*
Now instead of our my_app as library, we build DPDK app as static lib and
include that lib plus rte libs while compiling my_app.
Compilation and everything is fine but don't know why rte_timer_mange
always crashed out.
[BINARY = DPDK_APP compile as static lib(libL3DPDK.a) + (librte_*.a) +
MY_APP(source code) ]


*Extract from gdb core dump*
0x00000000060db2ae in timer_get_prev_entries (time_val=17207637256614021,
tim_lcore=1, prev=0x7fffffffe100, priv_timer=0x5bfe20980)
    at ../lib/timer/rte_timer.c:364
364                                     prev[lvl]->sl_next[lvl]->expire <=
time_val)
Missing separate debuginfos, use: debuginfo-install
boost-system-1.53.0-27.el7.x86_64 glibc-2.17-260.el7.x86_64
libgcc-4.8.5-36.el7.x86_64 libstdc++-4.8.5-36.el7.x86_64
numactl-libs-2.0.9-7.el7.x86_64 openssl-libs-1.0.2k-16.el7.x86_64
zlib-1.2.7-18.el7.x86_64
(gdb) bt
#0  0x00000000060db2ae in timer_get_prev_entries
(time_val=17207637256614021, tim_lcore=1, prev=0x7fffffffe100,
priv_timer=0x5bfe20980)
    at ../lib/timer/rte_timer.c:364
#1  0x00000000060db41f in timer_add (tim=0x4bbe54200, tim_lcore=1,
priv_timer=0x5bfe20980) at ../lib/timer/rte_timer.c:406
#2  0x00000000060db8f8 in __rte_timer_reset (tim=0x4bbe54200,
expire=17207637256614021, period=1170000000, tim_lcore=1,
    fct=0x6fbc7c <SKL_timerExpired>, arg=0x730f200 <g_healthCheckTimer>,
local_is_locked=0, timer_data=0x5bfe20980)
    at ../lib/timer/rte_timer.c:531
#3  0x00000000060dba42 in rte_timer_alt_reset (timer_data_id=0,
tim=0x4bbe54200, ticks=1170000000, type=PERIODICAL, tim_lcore=1,
    fct=0x6fbc7c <SKL_timerExpired>, arg=0x730f200 <g_healthCheckTimer>) at
../lib/timer/rte_timer.c:574
#4  0x00000000060db99b in rte_timer_reset (tim=0x4bbe54200,
ticks=1170000000, type=PERIODICAL, tim_lcore=1


Any pointer or suggestion, anything needs to be checked is highly
appreciated.


Thanks.

Nishant

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