diff options
Diffstat (limited to 'results/classifier/accel-gemma3:12b/vmm/1484925')
| -rw-r--r-- | results/classifier/accel-gemma3:12b/vmm/1484925 | 25 |
1 files changed, 25 insertions, 0 deletions
diff --git a/results/classifier/accel-gemma3:12b/vmm/1484925 b/results/classifier/accel-gemma3:12b/vmm/1484925 new file mode 100644 index 000000000..80cbd4361 --- /dev/null +++ b/results/classifier/accel-gemma3:12b/vmm/1484925 @@ -0,0 +1,25 @@ + +Segfault with custom vnc client + +Hey, + +I'm using Citrix XenServer 6.5. I worte a script that uses noVNC to connect to the rfb console via xapi. When I use GRML and try to boot it, the QEMU process segfaults and kills my VM. This happens when the screen resizes and the kernel is loading: + +recvfrom(3, "\3\1\0\0\0\0\2\200\1\220\3\0\2\200\0\0\0P\1\220", 4096, 0, NULL, NULL) = 20 +--- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_MAPERR, si_addr=0xb28000} --- + +I can see in the child process the following message, right before the parent Segfaults: +read(4, "cirrus: blanking the screen line_offset=0 height=480\n", 53) = 53 + +This issue only happens, when I have my custom php/novnc-client connected. I also tried the nodejs/novnc package from xen-orchestra - same result. Using the stock client from Citrix XenCenter it works just fine. So I think it is related to noVNC. I hope this is just a bug and not exploitable to force a VM to crash or execute code. + +XenServer launches the qemu with the following command line: + +qemu-dm-25 --syslog -d 25 -m 2048 -boot dc -serial pty -vcpus 1 -videoram 4 -vncunused -k en-us -vnc 127.0.0.1:1 -usb -usbdevice tablet -net nic,vlan=0,macaddr=8a:43:e2:b1:57:df,model=rtl8139 -net tap,vlan=0,bridge=xenbr0,ifname=tap25.0 -acpi -monitor pty + +XenServer 6.5 is using the following version: +# /usr/lib64/xen/bin/qemu-dm -help +QEMU PC emulator version 0.10.2, Copyright (c) 2003-2008 Fabrice Bellard + +Greetings +Uli Stärk \ No newline at end of file |