Public bug reported:
The latest libvirtd (6.0.0-0ubuntu8.13) crashes when trying to bring up
network pools with the stacktrace below. I tracked down the problem to
the newly added patch (lp-1892132-Add-phys_port_name-support-on-
virPCIGetNetName.patch). Assigning *netname = firstEntryName; ends up
in memory corruption. Looking at the mainline, I changed it to the
following:
*netname = g_steal_pointer(&firstEntryName);
or you can just do
firstEntryName = NULL;
Both will solve the problem.
#0 __GI_raise (sig=sig@entry=6) at ../sysdeps/unix/sysv/linux/raise.c:50
#1 0x00007f40e5d1c859 in __GI_abort () at abort.c:79
#2 0x00007f40e5d873ee in __libc_message (action=action@entry=do_abort,
fmt=fmt@entry=0x7f40e5eb1285 "%s\n") at ../sysdeps/posix/libc_fatal.c:155
#3 0x00007f40e5d8f47c in malloc_printerr (str=str@entry=0x7f40e5eb35d0
"free(): double free detected in tcache 2") at malloc.c:5347
#4 0x00007f40e5d910ed in _int_free (av=0x7f40c8000020, p=0x7f40c80079e0,
have_lock=0) at malloc.c:4201
#5 0x00007f40e61a9a4f in virFree (ptrptr=0x7f40c8003b60) at
../../../src/util/viralloc.c:348
#6 0x00007f40dd0cf8b1 in networkCreateInterfacePool (netdef=0x7f40840187f0) at
../../../src/network/bridge_driver.c:2849
#7 0x00007f40dd0d799c in networkStartNetworkExternal (obj=0x7f408400f720) at
../../../src/network/bridge_driver.c:2938
#8 networkStartNetwork (driver=driver@entry=0x7f408400a7a0,
obj=0x7f408400f720) at ../../../src/network/bridge_driver.c:2938
#9 0x00007f40dd0d854d in networkCreate (net=0x7f40c8000c60) at
../../../src/network/bridge_driver.c:4013
#10 0x00007f40e63fac3f in virNetworkCreate
(network=network@entry=0x7f40c8000c60) at ../../../src/libvirt-network.c:585
#11 0x0000560240e255d1 in remoteDispatchNetworkCreate (server=0x560240ea4280,
msg=0x560240ee8200, args=0x7f40c8000c40, rerr=0x7f40e00ec9a0, client=<optimized
out>) at ./remote/remote_daemon_dispatch_stubs.h:13570
#12 remoteDispatchNetworkCreateHelper (server=0x560240ea4280, client=<optimized
out>, msg=0x560240ee8200, rerr=0x7f40e00ec9a0, args=0x7f40c8000c40, ret=0x0) at
./remote/remote_daemon_dispatch_stubs.h:13549
#13 0x00007f40e630c970 in virNetServerProgramDispatchCall (msg=0x560240ee8200,
client=0x560240eea270, server=0x560240ea4280, prog=0x560240ee1520) at
../../../src/rpc/virnetserverprogram.c:430
#14 virNetServerProgramDispatch (prog=0x560240ee1520,
server=server@entry=0x560240ea4280, client=0x560240eea270, msg=0x560240ee8200)
at ../../../src/rpc/virnetserverprogram.c:302
#15 0x00007f40e6311c2c in virNetServerProcessMsg (msg=<optimized out>,
prog=<optimized out>, client=<optimized out>, srv=0x560240ea4280) at
../../../src/rpc/virnetserver.c:136
#16 virNetServerHandleJob (jobOpaque=<optimized out>, opaque=0x560240ea4280) at
../../../src/rpc/virnetserver.c:153
#17 0x00007f40e62301af in virThreadPoolWorker
(opaque=opaque@entry=0x560240e885f0) at ../../../src/util/virthreadpool.c:163
#18 0x00007f40e622f51c in virThreadHelper (data=<optimized out>) at
../../../src/util/virthread.c:196
#19 0x00007f40e5ef2609 in start_thread (arg=<optimized out>) at
pthread_create.c:477
#20 0x00007f40e5e19293 in clone () at
../sysdeps/unix/sysv/linux/x86_64/clone.S:95
** Affects: libvirt (Ubuntu)
Importance: Undecided
Status: New
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https://bugs.launchpad.net/bugs/1943481
Title:
libvirtd crashes when creating network interface pools in
6.0.0-0ubuntu8.13
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