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description of problem: target libvirtd crashed when migrate uri not right Version-Release number of selected component (if applicable): libvirt-1.2.8-16.el7.x86_64 How reproducible: 100% Steps to Reproduce: 1.direct migrate a happy vm from source to target # virsh migrate test4 --live qemu+ssh://lhuang/system --migrateuri 10.66.6.12 error: End of file while reading data: Ncat: Broken pipe.: Input/output error 2.check target libvirtd pid have changed Actual results: target libvirtd crashed when migrate uri not right Expected results: not crash infomation: backtrace: Program received signal SIGSEGV, Segmentation fault. [Switching to Thread 0x7faf28e76700 (LWP 17918)] 0x00007faf215e2584 in qemuMigrationPrepareDirect (driver=driver@entry=0x7faf180ffc20, dconn=dconn@entry=0x7faf140009a0, cookiein=cookiein@entry=0x7faf00001400 "<qemu-migration>\n <name>test4</name>\n <uuid>b1e7936b-104b-430e-9211-d6c61b8df313</uuid>\n <hostname>test1</hostname>\n <hostuuid>9541c739-5475-b76e-fd71-9f33cd23da24</hostuuid>\n <feature name='lock"..., cookieinlen=cookieinlen@entry=228, cookieout=cookieout@entry=0x7faf28e75b68, cookieoutlen=cookieoutlen@entry=0x7faf28e75b64, uri_in=0x7faf000015c0 "10.66.6.12", uri_out=uri_out@entry=0x7faf00002030, def=def@entry=0x7faf28e759d8, origname=0x0, listenAddress=0x7faf181160d0 "10.66.6.127", flags=flags@entry=1) at qemu/qemu_migration.c:3009 3009 if (STRNEQ(uri->scheme, "tcp") && (gdb) t a a bt ... Thread 10 (Thread 0x7faf28e76700 (LWP 17918)): #0 0x00007faf215e2584 in qemuMigrationPrepareDirect (driver=driver@entry=0x7faf180ffc20, dconn=dconn@entry=0x7faf140009a0, cookiein=cookiein@entry=0x7faf00001400 "<qemu-migration>\n <name>test4</name>\n <uuid>b1e7936b-104b-430e-9211-d6c61b8df313</uuid>\n <hostname>test1</hostname>\n <hostuuid>9541c739-5475-b76e-fd71-9f33cd23da24</hostuuid>\n <feature name='lock"..., cookieinlen=cookieinlen@entry=228, cookieout=cookieout@entry=0x7faf28e75b68, cookieoutlen=cookieoutlen@entry=0x7faf28e75b64, uri_in=0x7faf000015c0 "10.66.6.12", uri_out=uri_out@entry=0x7faf00002030, def=def@entry=0x7faf28e759d8, origname=0x0, listenAddress=0x7faf181160d0 "10.66.6.127", flags=flags@entry=1) at qemu/qemu_migration.c:3009 #1 0x00007faf2160b4a0 in qemuDomainMigratePrepare3Params (dconn=0x7faf140009a0, params=<optimized out>, nparams=2, cookiein=0x7faf00001400 "<qemu-migration>\n <name>test4</name>\n <uuid>b1e7936b-104b-430e-9211-d6c61b8df313</uuid>\n <hostname>test1</hostname>\n <hostuuid>9541c739-5475-b76e-fd71-9f33cd23da24</hostuuid>\n <feature name='lock"..., cookieinlen=228, cookieout=0x7faf28e75b68, cookieoutlen=0x7faf28e75b64, uri_out=0x7faf00002030, flags=1) at qemu/qemu_driver.c:11601 #2 0x00007faf382da6ac in virDomainMigratePrepare3Params (dconn=0x7faf140009a0, params=params@entry=0x7faf000014f0, nparams=2, cookiein=0x7faf00001400 "<qemu-migration>\n <name>test4</name>\n <uuid>b1e7936b-104b-430e-9211-d6c61b8df313</uuid>\n <hostname>test1</hostname>\n <hostuuid>9541c739-5475-b76e-fd71-9f33cd23da24</hostuuid>\n <feature name='lock"..., cookieinlen=228, cookieout=cookieout@entry=0x7faf28e75b68, cookieoutlen=cookieoutlen@entry=0x7faf28e75b64, uri_out=0x7faf00002030, flags=1) at libvirt.c:6935 #3 0x00007faf38d665e8 in remoteDispatchDomainMigratePrepare3Params (server=<optimized out>, msg=<optimized out>, ret=0x7faf000008f0, args=0x7faf000008c0, rerr=0x7faf28e75c80, client=<optimized out>) at remote.c:5582 #4 remoteDispatchDomainMigratePrepare3ParamsHelper (server=<optimized out>, client=<optimized out>, msg=<optimized out>, rerr=0x7faf28e75c80, args=0x7faf000008c0, ret=0x7faf000008f0) at remote_dispatch.h:6094 #5 0x00007faf38343242 in virNetServerProgramDispatchCall (msg=0x7faf394e2fb0, client=0x7faf394f2ee0, server=0x7faf394e1f10, prog=0x7faf394eefe0) at rpc/virnetserverprogram.c:437 #6 virNetServerProgramDispatch (prog=0x7faf394eefe0, server=server@entry=0x7faf394e1f10, client=0x7faf394f2ee0, msg=0x7faf394e2fb0) at rpc/virnetserverprogram.c:307 #7 0x00007faf38d903ed in virNetServerProcessMsg (msg=<optimized out>, prog=<optimized out>, client=<optimized out>, srv=0x7faf394e1f10) at rpc/virnetserver.c:172 #8 virNetServerHandleJob (jobOpaque=<optimized out>, opaque=0x7faf394e1f10) at rpc/virnetserver.c:193 #9 0x00007faf38246e65 in virThreadPoolWorker (opaque=opaque@entry=0x7faf394c4900) at util/virthreadpool.c:145 #10 0x00007faf382467fe in virThreadHelper (data=<optimized out>) at util/virthread.c:197 #11 0x00007faf35a97df5 in start_thread (arg=0x7faf28e76700) at pthread_create.c:308 #12 0x00007faf353ae1ad in clone () from /lib64/libc.so.6 ...
Fixed upstream by: commit 45853b5289646dfcb8215d714df57f069811001c Author: Luyao Huang <lhuang@redhat.com> CommitDate: 2015-02-11 13:20:30 +0100 qemu: fix crash when migrateuri has no scheme https://bugzilla.redhat.com/show_bug.cgi?id=1191355 When we attempt to migrate a vm with a migrateuri that has no scheme: # virsh migrate test4 --live qemu+ssh://lhuang/system --migrateuri 127.0.0.1 target libvirtd will crash because uri->scheme is NULL in qemuMigrationPrepareDirect on this line: if (STRNEQ(uri->scheme, "tcp") && Add a value check before this line. Also fix a bug like this in doNativeMigrate, that could only happen when destination libvirtd returned an incorrect URI. Signed-off-by: Luyao Huang <lhuang@redhat.com> Signed-off-by: Ján Tomko <jtomko@redhat.com> git describe: v1.2.12-108-g45853b5
I can reproduce this with libvirt-1.2.8-16.el7.x86_64 verify with build: libvirt-1.2.15-2.el7.x86_64 on target: check libvirtd pid before migration # pidof libvirtd 19449 on source do migration # virsh migrate rhel7 --live qemu+ssh://$target_ip/system --migrateuri 1.1.1.1 error: invalid argument: missing scheme in migration URI: 1.1.1.1 on target check libvird pid again # pidof libvirtd 19449 libvirtd on target not crashed move to verified.
Since the problem described in this bug report should be resolved in a recent advisory, it has been closed with a resolution of ERRATA. For information on the advisory, and where to find the updated files, follow the link below. If the solution does not work for you, open a new bug report. https://rhn.redhat.com/errata/RHBA-2015-2202.html