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| author | Kevin Wolf <kwolf@redhat.com> | 2020-11-30 11:56:15 +0100 |
|---|---|---|
| committer | Kevin Wolf <kwolf@redhat.com> | 2020-12-11 17:52:40 +0100 |
| commit | 7cc25f6c9ba1622c0e2c1186bb47fca8de03672b (patch) | |
| tree | 265cd398727096e36dc02b25b2a28749fdf31fe4 /net/can | |
| parent | f0947dc694e57d6ecb0f5ac3d684bcce8952cdff (diff) | |
| download | qemu-7cc25f6c9ba1622c0e2c1186bb47fca8de03672b.zip qemu-7cc25f6c9ba1622c0e2c1186bb47fca8de03672b.tar.gz qemu-7cc25f6c9ba1622c0e2c1186bb47fca8de03672b.tar.bz2 | |
can-host: Fix crash when 'canbus' property is not set
Providing the 'if' property, but not 'canbus' segfaults like this:
#0 0x0000555555b0f14d in can_bus_insert_client (bus=0x0, client=0x555556aa9af0) at ../net/can/can_core.c:88
#1 0x00005555559c3803 in can_host_connect (ch=0x555556aa9ac0, errp=0x7fffffffd568) at ../net/can/can_host.c:62
#2 0x00005555559c386a in can_host_complete (uc=0x555556aa9ac0, errp=0x7fffffffd568) at ../net/can/can_host.c:72
#3 0x0000555555d52de9 in user_creatable_complete (uc=0x555556aa9ac0, errp=0x7fffffffd5c8) at ../qom/object_interfaces.c:23
Add the missing NULL check.
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Message-Id: <20201130105615.21799-5-kwolf@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Diffstat (limited to 'net/can')
| -rw-r--r-- | net/can/can_host.c | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/net/can/can_host.c b/net/can/can_host.c index be4547d..ba7f163 100644 --- a/net/can/can_host.c +++ b/net/can/can_host.c @@ -53,6 +53,11 @@ static void can_host_connect(CanHostState *ch, Error **errp) CanHostClass *chc = CAN_HOST_GET_CLASS(ch); Error *local_err = NULL; + if (ch->bus == NULL) { + error_setg(errp, "'canbus' property not set"); + return; + } + chc->connect(ch, &local_err); if (local_err) { error_propagate(errp, local_err); |