qemu-ga on a NetBSD -current VM terminates with a SIGSEGV upon receiving
'guest-set-time' command...
Core was generated by `qemu-ga'.
Program terminated with signal SIGSEGV, Segmentation fault.
at ../qga/commands-posix.c:88
88 *str[len] = '\0';
[Current thread is 1 (process 1112)]
(gdb) bt
at ../qga/commands-posix.c:88
action=action@entry=0xcda34b8 "set hardware clock to system time", errp=errp@entry=0xffffff922a70, in_str=0x0)
at ../qga/commands-posix.c:164
errp=errp@entry=0xffffff922ad0) at ../qga/commands-posix.c:304
at qga/qga-qapi-commands.c:193
allow_oob=allow_oob@entry=false, cur_mon=cur_mon@entry=0x0) at ../qapi/qmp-dispatch.c:220
type=type@entry=JSON_RCURLY, x=28, y=1) at ../qobject/json-streamer.c:99
at ../qobject/json-lexer.c:313
buffer=buffer@entry=0xffffff922d10 "{\"execute\":\"guest-set-time\"}\n", size=<optimized out>)
at ../qobject/json-lexer.c:350
buffer=buffer@entry=0xffffff922d10 "{\"execute\":\"guest-set-time\"}\n", size=<optimized out>)
at ../qobject/json-streamer.c:121
at ../qga/channel-posix.c:94
(gdb)
The commandline options used on the host machine...
qemu-system-aarch64 \
-machine type=virt,pflash0=rom \
-m 8G \
-cpu host \
-smp 8 \
-accel hvf \
-device virtio-net-pci,netdev=unet \
-device virtio-blk-pci,drive=hd \
-drive file=netbsd.qcow2,if=none,id=hd \
-netdev user,id=unet,hostfwd=tcp::2223-:22 \
-object rng-random,filename=/dev/urandom,id=viornd0 \
-device virtio-rng-pci,rng=viornd0 \
-serial mon:stdio \
-display none \
-blockdev node-name=rom,driver=file,filename=/opt/homebrew/Cellar/qemu/9.0.2/share/qemu/edk2-aarch64-code.fd,read-only=true \
-chardev socket,path=/tmp/qga_netbsd.sock,server=on,wait=off,id=qga0 \
-device virtio-serial \
-device virtconsole,chardev=qga0,name=org.qemu.guest_agent.0
This patch rectifies the operator precedence while assigning the NUL
terminator.
Fixes: c3f32c13a3
Signed-off-by: Sunil Nimmagadda <sunil@nimmagadda.net>
Reviewed-by: Konstantin Kostiuk <kkostiuk@redhat.com>
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
Link: https://lore.kernel.org/r/m15xppk9qg.fsf@nimmagadda.net
Signed-off-by: Konstantin Kostiuk <kkostiuk@redhat.com>
(cherry picked from commit 9cfe110d9f)
References: bsc#1232617
Signed-off-by: Dario Faggioli <dfaggioli@suse.com>
0217be221c