Please fix your test client.
It would be helpful to know exactly how and where the test client crashes,
since it’s fairly hard to break the svm region mutex.
Client-side code doesn’t hold that mutex while processing a message, on purpose
to avoid issues of the form seen in the backtrace:
while (!svm_queue_sub (q, (u8 *) & msg, SVM_Q_WAIT, 0))
vl_msg_api_handler ((void *) msg);
Thanks... Dave
From: [email protected] <[email protected]> On Behalf Of
[email protected]
Sent: Thursday, July 18, 2019 7:05 AM
To: [email protected]
Subject: [vpp-dev] vpp process stuck
Hello all
i have test client that use the 'c api' connection to config and get dump from
the vpp.
i noticed that if my test client got an exception then the vpp got stuck also
this is the massgae that i see in the vpp log about my application:
vl_mem_send_client_keepalive_w_reg:573: REAPER: binary API client 'test' died
and this is the stack from the gdb:
.......
0x00007fcf5e331023 in __GI___pthread_mutex_lock (
mutex=mutex@entry=0x130021008) at ../nptl/pthread_mutex_lock.c:78
#2 0x00007fcf5f4abcfd in vl_mem_api_dead_client_scan (
am=0x7fcf5f6d7c40 <api_main>, shm=shm@entry=0x1300423cc,
now=now@entry=57515.915042799999<mailto:now=now@entry=57515.915042799999>)
at /mnt/vpp_code/vpp/src/vlibmemory/memory_api.c:639
#3 0x00007fcf5f4be03d in vl_api_clnt_process (vm=<optimized out>,
node=0x7fcf1d174000, f=<optimized out>)
at /mnt/vpp_code/vpp/src/vlibmemory/vlib_api.c:430
#4 0x00007fcf5e57eab6 in vlib_process_bootstrap (_a=<optimized out>)
at /mnt/vpp_code/vpp/src/vlib/main.c:1440
#5 0x00007fcf5e0b1614 in clib_calljmp ()
from /usr/lib/x86_64-linux-gnu/libvppinfra.so.19.01.2
#6 0x00007fcf1dbffe00 in ?? ()
#7 0x00007fcf5e584679 in vlib_process_startup (f=0x0, p=0x7fcf1d174000,
vm=0x7fcf5e7c83c0 <vlib_global_main>)
at /mnt/vpp_code/vpp/src/vlib/main.c:1462
#8 dispatch_process (vm=0x7fcf5e7c83c0 <vlib_global_main>, p=0x7fcf1d174000,
last_time_stamp=150702803856, f=0x0)
at /mnt/vpp_code/vpp/src/vlib/main.c:1507
it seem that it stuck on mutex somehow on function vl_mem_api_dead_client_scan()
can someone pls advice ?
im using
Version: v19.01.2-release
Compiled by: root
Compile host: ubuntu
Compiler: GCC 7.4.0
thnaks
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