Hello, I installed libvirt from package manager(debian apt) and want to modify feture in it, so i git clone from https://libvirt.org/git/?p=libvirt.git;a=summary But now i have trouble to start virsh. I have traced the email: https://www.redhat.com/archives/libvirt-users/2017-February/msg00074.html Here is output of command below: strace -o libvirt.log -f -s 1000 /usr/sbin/libvirtd https://github.com/yuzibo/linux-programming/blob/master/tmp/libvirt.log Here: sudo gdb -p $(pgrep libvirtd) (gdb) t a a bt [New LWP 14781] [New LWP 14782] [New LWP 14783] [New LWP 14784] [New LWP 14785] [New LWP 14786] [New LWP 14787] [New LWP 14788] [New LWP 14789] [New LWP 14790] [New LWP 14791] [New LWP 14792] [New LWP 14793] [New LWP 14794] [New LWP 14795] [New LWP 14796] [New LWP 14799] [Thread debugging using libthread_db enabled] Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1". 0x00007fcf4c75f67d in poll () at ../sysdeps/unix/syscall-template.S:84 84../sysdeps/unix/syscall-template.S: (no such file or directory)没有那个文件或目录. "" Thread 18 (Thread 0x7fcf3a4e8700 (LWP 14799)): #0 pthread_cond_wait@(a)GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185 #1 0x00007fcf4e17ee36 in virCondWait (c=c@entry=0x7fcf3400cc90, m=m@entry=0x7fcf3400cc50) at util/virthread.c:154 #2 0x00007fcf405498a0 in udevEventHandleThread (opaque=<optimized out>) at node_device/node_device_udev.c:1606 #3 0x00007fcf4e17ec02 in virThreadHelper (data=<optimized out>) at util/virthread.c:206 #4 0x00007fcf4ca26494 in start_thread (arg=0x7fcf3a4e8700) at pthread_create.c:333 #5 0x00007fcf4c768acf in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:97 Thread 17 (Thread 0x7fcf3b315700 (LWP 14796)): #0 0x00007fcf4c75f67d in poll () at ../sysdeps/unix/syscall-template.S:84 #1 0x00007fcf4c77917e in __poll_chk (fds=<optimized out>, nfds=<optimized out>, timeout=<optimized out>, fdslen=<optimized out>) at poll_chk.c:27 #2 0x00007fcf4e10f281 in poll (__timeout=-1, __nfds=<optimized out>, __fds=0x7fcf3b3143b0) at /usr/include/x86_64-linux-gnu/bits/poll2.h:41 #3 virCommandProcessIO (cmd=cmd@entry=0x7fcf34015d30) --Type <return> to continue, or q <return> to quit--- at util/vircommand.c:2085 #4 0x00007fcf4e1134ea in virCommandRun (cmd=0x7fcf34015d30, exitstatus=exitstatus@entry=0x7fcf3b314924) at util/vircommand.c:2316 #5 0x00007fcf3e239fca in virQEMUCapsInitQMPCommandRun ( cmd=cmd@entry=0x7fcf34015b10, forceTCG=forceTCG@entry=false) at qemu/qemu_capabilities.c:4262 #6 0x00007fcf3e23f4b9 in virQEMUCapsInitQMP (qmperr=0x7fcf3b314970, runGid=<optimized out>, runUid=<optimized out>, libDir=<optimized out>, qemuCaps=0x7fcf340159d0) at qemu/qemu_capabilities.c:4318 #7 virQEMUCapsNewForBinaryInternal (hostArch=VIR_ARCH_X86_64, binary=0x7fcf3403e160 "/usr/local/bin/qemu-system-x86_64", libDir=<optimized out>, runUid=<optimized out>, runGid=<optimized out>, microcodeVersion=166, kernelVersion=0x7fcf3404e120 "4.14.0+ #1 SMP Sun Nov 26 15:17:48 HKT 2017") at qemu/qemu_capabilities.c:4405 #8 0x00007fcf3e23f793 in virQEMUCapsNewData (binary=<optimized out>, privData=<optimized out>) at qemu/qemu_capabilities.c:4447 #9 0x00007fcf4e18ca1e in virFileCacheNewData ( name=0x7fcf3403e160 "/usr/local/bin/qemu-system-x86_64", cache=0x7fcf3404ddf0) at util/virfilecache.c:219 #10 virFileCacheValidate (cache=cache@entry=0x7fcf3404ddf0, name=name@entry=0x7fcf3403e160 "/usr/local/bin/qemu-system-x86_64", data=data@entry=0x7fcf3b314ae0) at util/virfilecache.c:290 ---Type <return> to continue, or q <return> to quit--- #11 0x00007fcf4e18cd77 in virFileCacheLookup ( cache=cache@entry=0x7fcf3404ddf0, name=name@entry=0x7fcf3403e160 "/usr/local/bin/qemu-system-x86_64") at util/virfilecache.c:323 #12 0x00007fcf3e23f9ee in virQEMUCapsCacheLookup ( cache=cache@entry=0x7fcf3404ddf0, binary=0x7fcf3403e160 "/usr/local/bin/qemu-system-x86_64") at qemu/qemu_capabilities.c:4583 #13 0x00007fcf3e23fc94 in virQEMUCapsInitGuest (guestarch=VIR_ARCH_X86_64, hostarch=VIR_ARCH_X86_64, cache=0x7fcf3404ddf0, caps=0x7fcf3404ded0) at qemu/qemu_capabilities.c:736 #14 virQEMUCapsInit (cache=0x7fcf3404ddf0) at qemu/qemu_capabilities.c:971 #15 0x00007fcf3e28d3a0 in virQEMUDriverCreateCapabilities ( driver=driver@entry=0x7fcf3401cbd0) at qemu/qemu_conf.c:1101 #16 0x00007fcf3e2d0be2 in qemuStateInitialize (privileged=true, callback=<optimized out>, opaque=<optimized out>) at qemu/qemu_driver.c:851 #17 0x00007fcf4e2b0bff in virStateInitialize (privileged=<optimized out>, callback=0x564b91ad18a0 <daemonInhibitCallback>, opaque=0x564b933e4540) at libvirt.c:662 #18 0x0000564b91ad18fb in daemonRunStateInit (opaque=0x564b933e4540) at remote/remote_daemon.c:802 #19 0x00007fcf4e17ec02 in virThreadHelper (data=<optimized out>) at util/virthread.c:206 ---Type <return> to continue, or q <return> to quit--- #20 0x00007fcf4ca26494 in start_thread (arg=0x7fcf3b315700) at pthread_create.c:333 #21 0x00007fcf4c768acf in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:97 Thread 16 (Thread 0x7fcf3bb16700 (LWP 14795)): #0 pthread_cond_wait@(a)GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185 #1 0x00007fcf4e17ee36 in virCondWait (c=c@entry=0x564b933f1bc8, m=m@entry=0x564b933f1ba0) at util/virthread.c:154 #2 0x00007fcf4e17f983 in virThreadPoolWorker ( opaque=opaque@entry=0x564b933d6d80) at util/virthreadpool.c:124 #3 0x00007fcf4e17ebd8 in virThreadHelper (data=<optimized out>) at util/virthread.c:206 #4 0x00007fcf4ca26494 in start_thread (arg=0x7fcf3bb16700) at pthread_create.c:333 #5 0x00007fcf4c768acf in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:97 Thread 15 (Thread 0x7fcf3c317700 (LWP 14794)): #0 pthread_cond_wait@(a)GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185 #1 0x00007fcf4e17ee36 in virCondWait (c=c@entry=0x564b933f1bc8, ---Type <return> to continue, or q <return> to quit--- m=m@entry=0x564b933f1ba0) at util/virthread.c:154 #2 0x00007fcf4e17f983 in virThreadPoolWorker ( opaque=opaque@entry=0x564b933d6cc0) at util/virthreadpool.c:124 #3 0x00007fcf4e17ebd8 in virThreadHelper (data=<optimized out>) at util/virthread.c:206 #4 0x00007fcf4ca26494 in start_thread (arg=0x7fcf3c317700) at pthread_create.c:333 #5 0x00007fcf4c768acf in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:97 Thread 14 (Thread 0x7fcf3cb18700 (LWP 14793)): #0 pthread_cond_wait@(a)GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185 #1 0x00007fcf4e17ee36 in virCondWait (c=c@entry=0x564b933f1bc8, m=m@entry=0x564b933f1ba0) at util/virthread.c:154 #2 0x00007fcf4e17f983 in virThreadPoolWorker ( opaque=opaque@entry=0x564b933d6c00) at util/virthreadpool.c:124 #3 0x00007fcf4e17ebd8 in virThreadHelper (data=<optimized out>) at util/virthread.c:206 #4 0x00007fcf4ca26494 in start_thread (arg=0x7fcf3cb18700) at pthread_create.c:333 #5 0x00007fcf4c768acf in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:97 ---Type <return> to continue, or q <return> to quit--- Thread 13 (Thread 0x7fcf3d319700 (LWP 14792)): #0 pthread_cond_wait@(a)GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185 #1 0x00007fcf4e17ee36 in virCondWait (c=c@entry=0x564b933f1bc8, m=m@entry=0x564b933f1ba0) at util/virthread.c:154 #2 0x00007fcf4e17f983 in virThreadPoolWorker ( opaque=opaque@entry=0x564b933d6b20) at util/virthreadpool.c:124 #3 0x00007fcf4e17ebd8 in virThreadHelper (data=<optimized out>) at util/virthread.c:206 #4 0x00007fcf4ca26494 in start_thread (arg=0x7fcf3d319700) at pthread_create.c:333 #5 0x00007fcf4c768acf in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:97 Thread 12 (Thread 0x7fcf3db1a700 (LWP 14791)): #0 pthread_cond_wait@(a)GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185 #1 0x00007fcf4e17ee36 in virCondWait (c=c@entry=0x564b933f1bc8, m=m@entry=0x564b933f1ba0) at util/virthread.c:154 #2 0x00007fcf4e17f983 in virThreadPoolWorker ( opaque=opaque@entry=0x564b933d6a60) at util/virthreadpool.c:124 #3 0x00007fcf4e17ebd8 in virThreadHelper (data=<optimized out>) ---Type <return> to continue, or q <return> to quit--- at util/virthread.c:206 #4 0x00007fcf4ca26494 in start_thread (arg=0x7fcf3db1a700) at pthread_create.c:333 #5 0x00007fcf4c768acf in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:97 Thread 11 (Thread 0x7fcf41df5700 (LWP 14790)): #0 pthread_cond_wait@(a)GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185 #1 0x00007fcf4e17ee36 in virCondWait (c=c@entry=0x564b933e49b8, m=m@entry=0x564b933e48f0) at util/virthread.c:154 #2 0x00007fcf4e17f944 in virThreadPoolWorker ( opaque=opaque@entry=0x564b933d5ca0) at util/virthreadpool.c:124 #3 0x00007fcf4e17ebd8 in virThreadHelper (data=<optimized out>) at util/virthread.c:206 #4 0x00007fcf4ca26494 in start_thread (arg=0x7fcf41df5700) at pthread_create.c:333 #5 0x00007fcf4c768acf in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:97 Thread 10 (Thread 0x7fcf425f6700 (LWP 14789)): #0 pthread_cond_wait@(a)GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185 ---Type <return> to continue, or q <return> to quit--- #1 0x00007fcf4e17ee36 in virCondWait (c=c@entry=0x564b933e49b8, m=m@entry=0x564b933e48f0) at util/virthread.c:154 #2 0x00007fcf4e17f944 in virThreadPoolWorker ( opaque=opaque@entry=0x564b933d5b00) at util/virthreadpool.c:124 #3 0x00007fcf4e17ebd8 in virThreadHelper (data=<optimized out>) at util/virthread.c:206 #4 0x00007fcf4ca26494 in start_thread (arg=0x7fcf425f6700) at pthread_create.c:333 #5 0x00007fcf4c768acf in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:97 Thread 9 (Thread 0x7fcf42df7700 (LWP 14788)): #0 pthread_cond_wait@(a)GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185 #1 0x00007fcf4e17ee36 in virCondWait (c=c@entry=0x564b933e49b8, m=m@entry=0x564b933e48f0) at util/virthread.c:154 #2 0x00007fcf4e17f944 in virThreadPoolWorker ( opaque=opaque@entry=0x564b933d5bc0) at util/virthreadpool.c:124 #3 0x00007fcf4e17ebd8 in virThreadHelper (data=<optimized out>) at util/virthread.c:206 #4 0x00007fcf4ca26494 in start_thread (arg=0x7fcf42df7700) at pthread_create.c:333 #5 0x00007fcf4c768acf in clone () ---Type <return> to continue, or q <return> to quit--- at ../sysdeps/unix/sysv/linux/x86_64/clone.S:97 Thread 8 (Thread 0x7fcf435f8700 (LWP 14787)): #0 pthread_cond_wait@(a)GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185 #1 0x00007fcf4e17ee36 in virCondWait (c=c@entry=0x564b933e49b8, m=m@entry=0x564b933e48f0) at util/virthread.c:154 #2 0x00007fcf4e17f944 in virThreadPoolWorker ( opaque=opaque@entry=0x564b933d5b00) at util/virthreadpool.c:124 #3 0x00007fcf4e17ebd8 in virThreadHelper (data=<optimized out>) at util/virthread.c:206 #4 0x00007fcf4ca26494 in start_thread (arg=0x7fcf435f8700) at pthread_create.c:333 #5 0x00007fcf4c768acf in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:97 Thread 7 (Thread 0x7fcf43df9700 (LWP 14786)): #0 pthread_cond_wait@(a)GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185 #1 0x00007fcf4e17ee36 in virCondWait (c=c@entry=0x564b933e49b8, m=m@entry=0x564b933e48f0) at util/virthread.c:154 #2 0x00007fcf4e17f944 in virThreadPoolWorker ( opaque=opaque@entry=0x564b933d5d60) at util/virthreadpool.c:124 ---Type <return> to continue, or q <return> to quit--- #3 0x00007fcf4e17ebd8 in virThreadHelper (data=<optimized out>) at util/virthread.c:206 #4 0x00007fcf4ca26494 in start_thread (arg=0x7fcf43df9700) at pthread_create.c:333 #5 0x00007fcf4c768acf in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:97 Thread 6 (Thread 0x7fcf445fa700 (LWP 14785)): #0 pthread_cond_wait@(a)GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185 #1 0x00007fcf4e17ee36 in virCondWait (c=c@entry=0x564b933e4918, m=m@entry=0x564b933e48f0) at util/virthread.c:154 #2 0x00007fcf4e17f983 in virThreadPoolWorker ( opaque=opaque@entry=0x564b933d5b00) at util/virthreadpool.c:124 #3 0x00007fcf4e17ebd8 in virThreadHelper (data=<optimized out>) at util/virthread.c:206 #4 0x00007fcf4ca26494 in start_thread (arg=0x7fcf445fa700) at pthread_create.c:333 #5 0x00007fcf4c768acf in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:97 Thread 5 (Thread 0x7fcf44dfb700 (LWP 14784)): #0 pthread_cond_wait@(a)GLIBC_2.3.2 () ---Type <return> to continue, or q <return> to quit--- at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185 #1 0x00007fcf4e17ee36 in virCondWait (c=c@entry=0x564b933e4918, m=m@entry=0x564b933e48f0) at util/virthread.c:154 #2 0x00007fcf4e17f983 in virThreadPoolWorker ( opaque=opaque@entry=0x564b933d5bc0) at util/virthreadpool.c:124 #3 0x00007fcf4e17ebd8 in virThreadHelper (data=<optimized out>) at util/virthread.c:206 #4 0x00007fcf4ca26494 in start_thread (arg=0x7fcf44dfb700) at pthread_create.c:333 #5 0x00007fcf4c768acf in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:97 Thread 4 (Thread 0x7fcf455fc700 (LWP 14783)): #0 pthread_cond_wait@(a)GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185 #1 0x00007fcf4e17ee36 in virCondWait (c=c@entry=0x564b933e4918, m=m@entry=0x564b933e48f0) at util/virthread.c:154 #2 0x00007fcf4e17f983 in virThreadPoolWorker ( opaque=opaque@entry=0x564b933d5ca0) at util/virthreadpool.c:124 #3 0x00007fcf4e17ebd8 in virThreadHelper (data=<optimized out>) at util/virthread.c:206 #4 0x00007fcf4ca26494 in start_thread (arg=0x7fcf455fc700) at pthread_create.c:333 ---Type <return> to continue, or q <return> to quit--- #5 0x00007fcf4c768acf in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:97 Thread 3 (Thread 0x7fcf45dfd700 (LWP 14782)): #0 pthread_cond_wait@(a)GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185 #1 0x00007fcf4e17ee36 in virCondWait (c=c@entry=0x564b933e4918, m=m@entry=0x564b933e48f0) at util/virthread.c:154 #2 0x00007fcf4e17f983 in virThreadPoolWorker ( opaque=opaque@entry=0x564b933d5d60) at util/virthreadpool.c:124 #3 0x00007fcf4e17ebd8 in virThreadHelper (data=<optimized out>) at util/virthread.c:206 #4 0x00007fcf4ca26494 in start_thread (arg=0x7fcf45dfd700) at pthread_create.c:333 #5 0x00007fcf4c768acf in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:97 Thread 2 (Thread 0x7fcf465fe700 (LWP 14781)): #0 pthread_cond_wait@(a)GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185 #1 0x00007fcf4e17ee36 in virCondWait (c=c@entry=0x564b933e4918, m=m@entry=0x564b933e48f0) at util/virthread.c:154 #2 0x00007fcf4e17f983 in virThreadPoolWorker ( ---Type <return> to continue, or q <return> to quit--- opaque=opaque@entry=0x564b933d5e20) at util/virthreadpool.c:124 #3 0x00007fcf4e17ebd8 in virThreadHelper (data=<optimized out>) at util/virthread.c:206 #4 0x00007fcf4ca26494 in start_thread (arg=0x7fcf465fe700) at pthread_create.c:333 #5 0x00007fcf4c768acf in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:97 Thread 1 (Thread 0x7fcf4eb4dd40 (LWP 14780)): #0 0x00007fcf4c75f67d in poll () at ../sysdeps/unix/syscall-template.S:84 #1 0x00007fcf4e122684 in poll (__timeout=-1, __nfds=6, __fds=<optimized out>) at /usr/include/x86_64-linux-gnu/bits/poll2.h:46 #2 virEventPollRunOnce () at util/vireventpoll.c:641 #3 0x00007fcf4e121371 in virEventRunDefaultImpl () at util/virevent.c:327 #4 0x00007fcf4e243e4d in virNetDaemonRun (dmn=0x564b933e4540) at rpc/virnetdaemon.c:850 #5 0x0000564b91ad0d5e in main (argc=<optimized out>, argv=<optimized out>) at remote/remote_daemon.c:1460 Thank you in advance!