#21 0x00007fddd3c42b43 in start_thread (arg=<optimized out>) at ./nptl/pthread_create.c:442
#22 0x00007fddd3cd4a00 in clone3 () at ../sysdeps/unix/sysv/linux/x86_64/clone3.S:81
(gdb) info reg
rax 0xfffffffffffffffc -4
rbx 0x0 0
rcx 0x7fddd3c3f197 140590717333911
rdx 0x0 0
rsi 0x189 393
rdi 0x7fddcc054794 140590587398036
rbp 0x7fddcc054768 0x7fddcc054768
rsp 0x7fddd46b45e0 0x7fddd46b45e0
r8 0x0 0
r9 0xffffffff 4294967295
r10 0x7fddd46b4820 140590728300576
r11 0x246 582
r12 0x0 0
r13 0x0 0
r14 0x7fddcc054794 140590587398036
r15 0x7 7
rip 0x7fddd3c3f197 0x7fddd3c3f197 <__GI___futex_abstimed_wait_cancelable64+231>
eflags 0x246 [ PF ZF IF ]
cs 0x33 51
ss 0x2b 43
ds 0x0 0
es 0x0 0
fs 0x0 0
gs
0x0 0
（gdb）信息线程
Id Target Id Frame
* 1 Thread 0x7fddd46b5640 (LWP 345144) __futex_abstimed_wait_common64 (private=0, cancel=true, abstime=0x7fddd46b4820, op=393,
expected=0, futex_word=0x7fddcc054794) at ./nptl/futex-internal.c:57
2 Thread 0x7fddd5eff640 (LWP 345124) __futex_abstimed_wait_common64 (private=0, cancel=true, abstime=0x7fddd5efeb80, op=393,
expected=0, futex_word=0x7fddcc004354) at ./nptl/futex-internal.c:57
3 Thread 0x7fddd4e3f640 (LWP 345127) __futex_abstimed_wait_common64 (private=-872292256, cancel=true, abstime=0x7fddd4e3ecc0,
op=393, expected=0, futex_word=0x7fddc4001084) at ./nptl/futex-internal.c:57
4 Thread 0x7fddd13ff640 (LWP 345120) __futex_abstimed_wait_common64 (private=0, cancel=true, abstime=0x7fddd13fed80, op=393,
expected=0, futex_word=0x7fddd701be08 <spq+104>) at ./nptl/futex-internal.c:57
5 Thread 0x7fddd4b5e640 (LWP 345129) __futex_abstimed_wait_common64 (private=-742119344, cancel=true, abstime=0x7fddd4b5dcb0,
op=393, expected=0, futex_word=0x7fddcc116d90) at ./nptl/futex-internal.c:57
6 Thread 0x7fddd75f3c40 (LWP 345119) 0x00007fddd3cc97ed in __GI___select (nfds=4, readfds=0x7ffe783541f0, writefds=0x0,
exceptfds=0x0, timeout=0x0) at ../sysdeps/unix/sysv/linux/select.c:69
7 Thread 0x7fddd4694640 (LWP 345145) __futex_abstimed_wait_common64 (private=0, cancel=true, abstime=0x0, op=393, expected=0,
futex_word=0x7fddd569a358 <rmi_API+472>) at ./nptl/futex-internal.c:57
8 Thread 0x7fddd673f640 (LWP 345123) 0x00007fddd3cc6d7f in __GI___poll (fds=0x7fddc0000d60, nfds=2, timeout=-1)
at ../sysdeps/unix/sysv/linux/poll.c:29
9 Thread 0x7fddd4b7f640 (LWP 345128) 0x00007fddd3cc6d7f in __GI___poll (fds=0x7fddd4b7e2c8, nfds=1, timeout=-1)
at ../sysdeps/unix/sysv/linux/poll.c:29
10 Thread 0x7fddd56bf640 (LWP 345126) __futex_abstimed_wait_common64 (private=0, cancel=true, abstime=0x0, op=393, expected=0,
futex_word=0x7fddd0a3cf10 <dispatch_lock+80>) at ./nptl/futex-internal.c:57
11 Thread 0x7fddd4673640 (LWP 345146) __GI___libc_read (nbytes=4, buf=0x7fddd4672dd0, fd=16) at ../sysdeps/unix/sysv/linux/read.c:26
12 Thread 0x7fddd5abf640 (LWP 345125) __futex_abstimed_wait_common64 (private=0, cancel=true, abstime=0x0, op=393, expected=0,
futex_word=0x7fddd569a434 <rmi_API+692>) at ./nptl/futex-internal.c:57
13 Thread 0x7fddd4718640 (LWP 345141) 0x00007fddd3c93868 in __GI___clock_nanosleep (clock_id=clock_id@entry=0, flags=flags@entry=0,
req=0x7fddd4717cb0, rem=0x0) at ../sysdeps/unix/sysv/linux/clock_nanosleep.c:78
14 Thread 0x7fddd4b3d640 (LWP 345130) __futex_abstimed_wait_common64 (private=0, cancel=true, abstime=0x7fddd4b3ccc0, op=393,
expected=0, futex_word=0x7fddcc0112c0) at ./nptl/futex-internal.c:57
15 Thread 0x7fddd47ff640 (LWP 345134) __futex_abstimed_wait_common64 (private=-1, cancel=true, abstime=0x7fddd47fece0, op=393,
expected=0, futex_word=0x7fddcc07fc30) at ./nptl/futex-internal.c:57
16 Thread 0x7fddd6c7f640 (LWP 345122) futex_wait (private=0, expected=20, futex_word=0x7fddd6c7df00)
at ../sysdeps/nptl/futex-internal.h:146
17 Thread 0x7fddd46d6640 (LWP 345143) 0x00007fddd3cc6d7f in __GI___poll (fds=0x7fddd46d5e18, nfds=1, timeout=-1)
at ../sysdeps/unix/sysv/linux/poll.c:29
18 Thread 0x7fddd47bd640 (LWP 345136) __futex_abstimed_wait_common64 (private=-1, cancel=true, abstime=0x7fddd47bcce0, op=393,
expected=0, futex_word=0x7fddcc07eee0) at ./nptl/futex-internal.c:57
19 Thread 0x7fddd477b640 (LWP 345138) __futex_abstimed_wait_common64 (private=-1, cancel=true, abstime=0x7fddd477ace0, op=393,
expected=0, futex_word=0x7fddcc07f3e0) at ./nptl/futex-internal.c:57
--Type <RET> for more, q to quit, c to continue without paging--
20 Thread 0x7fddd4afb640 (LWP 345132) 0x00007fddd3c3f972 in __GI___nptl_setxid_sighandler (sig=33, si=0x7fddcc0d1f70,
ctx=<optimized out>) at ./nptl/nptl_setxid.c:82
21 Thread 0x7fddd4739640 (LWP 345140) __GI___nptl_setxid_sighandler (sig=33, si=0x7fddcc1a4e70, ctx=<optimized out>)
at ./nptl/nptl_setxid.c:72
22 Thread 0x7fddd475a640 (LWP 345139) __futex_abstimed_wait_common64 (private=-1, cancel=true, abstime=0x7fddd4759ce0, op=393,
expected=0, futex_word=0x7fddcc0fa5a0) at ./nptl/futex-internal.c:57
23 Thread 0x7fddd4b1c640 (LWP 345131) __futex_abstimed_wait_common64 (private=0, cancel=true, abstime=0x7fddd4b1bce0, op=393,
expected=0, futex_word=0x7fddcc0819e0) at ./nptl/futex-internal.c:57
24 Thread 0x7fddd47de640 (LWP 345135) __futex_abstimed_wait_common64 (private=-1, cancel=true, abstime=0x7fddd47ddce0, op=393,
expected=0, futex_word=0x7fddcc07f710) at ./nptl/futex-internal.c:57
25 Thread 0x7fddd4ada640 (LWP 345133) __futex_abstimed_wait_common64 (private=0, cancel=true, abstime=0x7fddd4ad9ce0, op=393,
expected=0, futex_word=0x7fddcc07fa30) at ./nptl/futex-internal.c:57
26 Thread 0x7fddd479c640 (LWP 345137) __futex_abstimed_wait_common64 (private=-1, cancel=true, abstime=0x7fddd479bce0, op=393,
expected=0, futex_word=0x7fddcc07f160) at ./nptl/futex-internal.c:57
27 Thread 0x7fddd46f7640 (LWP 345142) __futex_abstimed_wait_common64 (private=-1, cancel=true, abstime=0x7fddd46f6ce0, op=393,
expected=0, futex_word=0x7fddcc080930) at ./nptl/futex-internal.c:57