[sdl-qemu] [PATCH 1/1] No checks, dereferencing possible

[Миронов Сергей Владимирович]

No checks, dereferencing possible.


Return value of a function 'virDomainChrSourceDefNew'
is dereferenced at qemu_command.c without checking
for NULL, but it is usually checked for this function.


Found by Linux Verification Center (linuxtesting.org) with SVACE.


Fixes: 1f85f0967b ("ci: jobs.sh: Add back '--no-suite syntax-check 
--print-errorlogs'")

Signed-off-by: Sergey Mironov <miro...@fintech.ru>

---
src/qemu/qemu_command.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/src/qemu/qemu_command.c b/src/qemu/qemu_command.c
index e84374b4cf..8d11972c88 100644
--- a/src/qemu/qemu_command.c
+++ b/src/qemu/qemu_command.c
@@ -4698,6 +4698,8 @@ qemuBuildVideoCommandLine(virCommand *cmd,
             g_autofree char *name = g_strdup_printf("%s-vhost-user", 
video->info.alias);
             qemuDomainChrSourcePrivate *chrsrcpriv = 
QEMU_DOMAIN_CHR_SOURCE_PRIVATE(chrsrc);

+           if (chrsrc == NULL)
+                   return -1;
             chrsrc->type = VIR_DOMAIN_CHR_TYPE_UNIX;
             chrsrcpriv->directfd = qemuFDPassDirectNew(name, 
&videopriv->vhost_user_fd);
--
2.31.1