Hi,

I freshly compile haproxy-1.9.10, and after the start, I display a lot of 
segfaults.

#0  stktable_release (t=t@entry=0x274a5a8, ts=0x0) at src/stick_table.c:419
#1  0x000000000049a0d6 in sample_conv_in_table (arg_p=<optimized out>, 
smp=0x7fffc6ed0d70, private=<optimized out>)
    at src/stick_table.c:876
#2  0x00000000004d1554 in sample_process (px=px@entry=0x32cbae0, 
sess=sess@entry=0x36e13b0,
    strm=strm@entry=0x365d0d0, opt=opt@entry=6, expr=0x3294540, 
p=p@entry=0x7fffc6ed0d70) at src/sample.c:1082
#3  0x00000000004f99fc in acl_exec_cond (cond=0x3707690, px=0x32cbae0, 
sess=sess@entry=0x36e13b0,
    strm=strm@entry=0x365d0d0, opt=6, opt@entry=2) at src/acl.c:1148
#4  0x00000000004e6c7d in tcp_inspect_request (s=s@entry=0x365d0d0, 
req=req@entry=0x365d0e0, an_bit=an_bit@entry=2)
    at src/tcp_rules.c:148
#5  0x0000000000487deb in process_stream (t=t@entry=0x8163d80) at 
src/stream.c:1902
#6  0x0000000000508b1b in process_runnable_tasks () at src/task.c:229
#7  0x00000000004ba44b in run_poll_loop () at src/haproxy.c:2403
#8  run_thread_poll_loop (data=data@entry=0x27d97e0) at src/haproxy.c:2470
#9  0x000000000041b5a5 in main (argc=<optimized out>, argv=0x7fffc6ed1498) at 
src/haproxy.c:3074

src/stick_table.c:419

 415 /* Just decrease the ref_cnt of the current session */
 416 void stktable_release(struct stktable *t, struct stksess *ts)
 417 {
 418         HA_SPIN_LOCK(STK_TABLE_LOCK, &t->lock);
 419         ts->ref_cnt--;
 420         HA_SPIN_UNLOCK(STK_TABLE_LOCK, &t->lock);
 421 }

(gdb) p ts
$1 = (struct stksess *) 0x0

There is basic haproxy 1.8.10 (ec17d7a98f30326918219ba876fcfc56f6ad6823) 
compiled with these options:

make -j 2 -C haproxy-1.8 \
        DEBUG="-DDEBUG_EXPR" \
        TARGET=linux2628 \
        USE_THREAD=1 \
        USE_REGPARM=1 \
        USE_SYSTEMD=1 \
        USE_LINUX_TPROXY=1 \
        USE_OPENSSL=yes \
        USE_PCRE=yes \
        USE_ZLIB=yes \
        USE_LUA=1 \
        USE_51DEGREES=1 \
        51DEGREES_SRC=/opt/Device-Detection/src/pattern

Tell me if you want the core & binary file.

Thierry

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