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ui: fix crash when there are no active_console 

Thread 1 "qemu-system-x86" received signal SIGSEGV, Segmentation fault.
0x0000555555888630 in dpy_ui_info_supported (con=0x0) at ../ui/console.c:812
812	    return con->hw_ops->ui_info != NULL;
(gdb) bt
#0  0x0000555555888630 in dpy_ui_info_supported (con=0x0) at ../ui/console.c:812
#1  0x00005555558a44b1 in protocol_client_msg (vs=0x5555578c76c0, data=0x5555581e93f0 <incomplete sequence \373>, len=24) at ../ui/vnc.c:2585
#2  0x00005555558a19ac in vnc_client_read (vs=0x5555578c76c0) at ../ui/vnc.c:1607
#3  0x00005555558a1ac2 in vnc_client_io (ioc=0x5555581eb0e0, condition=G_IO_IN, opaque=0x5555578c76c0) at ../ui/vnc.c:1635

Fixes:
https://issues.redhat.com/browse/RHEL-2600

Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Reviewed-by: Albert Esteve <aesteve@redhat.com>
(cherry picked from commit 48a35e12fa)
Signed-off-by: Michael Tokarev <mjt@tls.msk.ru>
Marc-André Lureau 2023-09-11 18:04:47 +04:00 committed by Michael Tokarev
parent 9eda3b6874
commit d0f8b52fc1
1 changed files with 3 additions and 0 deletions
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ui/console.c
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@ -1697,6 +1697,9 @@ bool dpy_ui_info_supported(QemuConsole *con)
if (con == NULL) {
con = active_console;
}
if (con == NULL) {
return false;
}
return con->hw_ops->ui_info != NULL;
}