Comment 29 for bug 1822096

#0 __GI_raise (sig=sig@entry=6) at ../sysdeps/unix/sysv/linux/raise.c:50
#1 0x00007f6adcbd2535 in __GI_abort () at abort.c:79
#2 0x00007f6adcc397b6 in __libc_message (action=action@entry=do_abort, fmt=fmt@entry=0x7f6adcd5f952 "%s\n") at ../sysdeps/posix/libc_fatal.c:181
#3 0x00007f6adcc4060a in malloc_printerr (str=str@entry=0x7f6adcd61638 "double free or corruption (fasttop)") at malloc.c:5352
#4 0x00007f6adcc425a4 in _int_free (av=0x7f6ab0000020, p=0x7f6ab0022690, have_lock=<optimized out>) at malloc.c:4274
#5 0x00007f6adce923cb in virFree (ptrptr=ptrptr@entry=0x7f6ad765b6f0) at ../../../src/util/viralloc.c:581
#6 0x00007f6adcfabdc9 in virChrdevFDStreamCloseCbFree (opaque=<optimized out>) at ../../../src/conf/virchrdev.c:238
#7 0x00007f6adcebc839 in virFDStreamSetInternalCloseCb (st=<optimized out>, cb=cb@entry=0x0, opaque=opaque@entry=0x0, fcb=fcb@entry=0x0) at ../../../src/util/virfdstream.c:1444
#8 0x00007f6adcfabfaf in virChrdevFreeClearCallbacks (payload=<optimized out>, name=<optimized out>, data=<optimized out>) at ../../../src/conf/virchrdev.c:299
#9 0x00007f6adcec6f30 in virHashForEach (data=<optimized out>, iter=<optimized out>, table=<optimized out>) at ../../../src/util/virhash.c:575