[Gluster-devel] Update on mgmt_v3-locks.t failure in netbsd

[Atin Mukherjee]

I see netbsd regression doesn't execute peer probe from any other tests
apart from mgmt_v3-locks.t, if it had that would have also failed. So
the conclusion is peer probe doesn't work in netbsd. Glusterd crashes
with following bt when peer probe is executed:

#0  __uatomic_add_return (len=8, val=1, addr=<optimized out>) at
/usr/pkg/include/urcu/uatomic.h:233
233             __asm__ __volatile__("ud2");
(gdb) bt
#0  __uatomic_add_return (len=8, val=1, addr=<optimized out>) at
/usr/pkg/include/urcu/uatomic.h:233
#1  glusterd_peerinfo_new (state=state at entry=GD_FRIEND_STATE_DEFAULT,
uuid=uuid at entry=0x0,
    hostname=<optimized out>, hostname at entry=0xb8b040e0 "127.1.1.2",
port=port at entry=24007)
    at glusterd-peer-utils.c:308
#2  0xb91e0068 in glusterd_friend_add (hoststr=hoststr at entry=0xb8b040e0
"127.1.1.2", port=port at entry=24007,
    state=state at entry=GD_FRIEND_STATE_DEFAULT, uuid=uuid at entry=0x0,
friend=friend at entry=0xb89fff30,
    restore=restore at entry=_gf_false, args=args at entry=0xb89fff38) at
glusterd-handler.c:3212
#3  0xb91e2927 in glusterd_probe_begin (req=req at entry=0xb8f40040,
hoststr=0xb8b040e0 "127.1.1.2", port=24007,
    dict=0xb9c013b0, op_errno=op_errno at entry=0xb89fff9c) at
glusterd-handler.c:3320
#4  0xb91e2de2 in __glusterd_handle_cli_probe (req=0xb8f40040) at
glusterd-handler.c:1078
#5  0xb91dc932 in glusterd_big_locked_handler (req=req at entry=0xb8f40040,
    actor_fn=actor_fn at entry=0xb91e294d <__glusterd_handle_cli_probe>) at
glusterd-handler.c:83
#6  0xb91dc9e8 in glusterd_handle_cli_probe (req=0xb8f40040) at
glusterd-handler.c:1105
#7  0xbb787c82 in synctask_wrap (old_task=0xb8f66000) at syncop.c:375
#8  0xbb39c630 in ?? () from /usr/lib/libc.so.12

http://review.gluster.org/#/c/10147/ is the cause for it. I will
continue to investigate on this, however I am not able to understand
what this line __asm__ __volatile__("ud2") indicating. Any experts :) ?

~Atin