Public bug reported:
This bug is just informative since I don't think the fix applies and
I'll explain why.
I was given a dump with the main thread's back trace like this:
#0 0x00007f94529f1428 in __GI_raise (sig=sig@entry=6) at
../sysdeps/unix/sysv/linux/raise.c:54
#1 0x00007f94529f302a in __GI_abort () at abort.c:89
#2 0x00007f9452a337ea in __libc_message (do_abort=do_abort@entry=2,
fmt=fmt@entry=0x7f9452b4c2e0 "*** Error in `%s': %s: 0x%s ***\n")
at ../sysdeps/posix/libc_fatal.c:175
#3 0x00007f9452a3ea5a in malloc_printerr (ar_ptr=0x3, ptr=<optimized out>,
str=<optimized out>, action=3) at malloc.c:5004
#4 _int_realloc (av=av@entry=0x7f9452d7fb20 <main_arena>,
oldp=oldp@entry=0x55bf445eb9d0, oldsize=oldsize@entry=2912,
nb=nb@entry=2848) at malloc.c:4250
#5 0x00007f9452a3fc89 in __GI___libc_realloc (oldmem=0x55bf445eb9e0,
bytes=bytes@entry=2839) at malloc.c:3043
#6 0x00007f945340d2f3 in virReallocN (ptrptr=ptrptr@entry=0x7ffe2f31c0a0,
size=size@entry=1, count=count@entry=2839,
report=report@entry=false, domcode=domcode@entry=0,
filename=filename@entry=0x0, funcname=0x0, linenr=0)
at ../../../src/util/viralloc.c:245
#7 0x00007f942c00c119 in qemuProcessReadLog (msg=0x7ffe2f31c098,
logCtxt=<optimized out>) at ../../../src/qemu/qemu_process.c:1684
#8 qemuProcessReportLogError (logCtxt=<optimized out>,
msgprefix=0x7f942c095548 "early end of file from monitor, possible problem")
at ../../../src/qemu/qemu_process.c:1696
#9 0x00007f942c0223fc in qemuMonitorIO (watch=watch@entry=107, fd=<optimized
out>, events=<optimized out>, events@entry=13,
opaque=opaque@entry=0x7f94000ab3b0) at ../../../src/qemu/qemu_monitor.c:718
#10 0x00007f945342b393 in virEventPollDispatchHandles (fds=<optimized out>,
nfds=<optimized out>)
at ../../../src/util/vireventpoll.c:509
#11 virEventPollRunOnce () at ../../../src/util/vireventpoll.c:658
#12 0x00007f9453429c01 in virEventRunDefaultImpl () at
../../../src/util/virevent.c:314
#13 0x00007f9453575b4d in virNetDaemonRun (dmn=0x55bf445c28e0) at
../../../src/rpc/virnetdaemon.c:701
#14 0x000055bf43449407 in main (argc=<optimized out>, argv=<optimized out>) at
../../../daemon/libvirtd.c:1577
And the analysis goes in the comments...
** Affects: libvirt (Ubuntu)
Importance: Undecided
Status: New
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https://bugs.launchpad.net/bugs/1670659
Title:
Libvirt can crash on lack of memory when starting multiple instances
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