Comment 3 for bug 1805256

Hi, I also found a problem that qemu-img convert hands in ARM.

The convert command line is "qemu-img convert -f qcow2 -O raw disk.qcow2 disk.raw ".

The bt is below:

Thread 2 (Thread 0x40000b776e50 (LWP 27215)):
#0 0x000040000a3f2994 in sigtimedwait () from /lib64/libc.so.6
#1 0x000040000a39c60c in sigwait () from /lib64/libpthread.so.0
#2 0x0000aaaaaae82610 in sigwait_compat (opaque=0xaaaac5163b00) at util/compatfd.c:37
#3 0x0000aaaaaae85038 in qemu_thread_start (args=args@entry=0xaaaac5163b90) at util/qemu_thread_posix.c:496
#4 0x000040000a3918bc in start_thread () from /lib64/libpthread.so.0
#5 0x000040000a492b2c in thread_start () from /lib64/libc.so.6

Thread 1 (Thread 0x40000b573370 (LWP 27214)):
#0 0x000040000a489020 in ppoll () from /lib64/libc.so.6
#1 0x0000aaaaaadaefc0 in ppoll (__ss=0x0, __timeout=0x0, __nfds=<optimized out>, __fds=<optimized out>) at /usr/include/bits/poll2.h:77
#2 qemu_poll_ns (fds=<optimized out>, nfds=<optimized out>, timeout=<optimized out>) at qemu_timer.c:391
#3 0x0000aaaaaadae014 in os_host_main_loop_wait (timeout=<optimized out>) at main_loop.c:272
#4 0x0000aaaaaadae190 in main_loop_wait (nonblocking=<optimized out>) at main_loop.c:534
#5 0x0000aaaaaad97be0 in convert_do_copy (s=0xffffdc32eb48) at qemu-img.c:1923
#6 0x0000aaaaaada2d70 in img_convert (argc=<optimized out>, argv=<optimized out>) at qemu-img.c:2414
#7 0x0000aaaaaad99ac4 in main (argc=7, argv=<optimized out>) at qemu-img.c:5305

Do you find the cause of the problem and fix it? Thanks for your reply!