Using an invalid option for a block device that is opened with
BDRV_O_PROTOCOL led to drv = NULL, and when trying to include the driver
name in the error message, qemu dereferenced it:
$ x86_64-softmmu/qemu-system-x86_64 -drive file=/tmp/test.qcow2,file.foo=bar
Segmentation fault (core dumped)
With this patch applied, the expected error message is printed:
$ x86_64-softmmu/qemu-system-x86_64 -drive file=/tmp/test.qcow2,file.foo=bar
qemu-system-x86_64: -drive file=/tmp/test.qcow2,file.foo=bar: could
not open disk image /tmp/test.qcow2: Block protocol 'file' doesn't
support the option 'foo'
Signed-off-by: Kevin Wolf <kw...@redhat.com>
Reviewed-by: Benoit Canet <ben...@irqsave.net>
---
block.c | 1 +
tests/qemu-iotests/051 | 9 +++++++++
tests/qemu-iotests/051.out | 15 +++++++++++++++
3 files changed, 25 insertions(+)
diff --git a/block.c b/block.c
index e7387f1..f1ef4b0 100644
--- a/block.c
+++ b/block.c
@@ -1234,6 +1234,7 @@ int bdrv_open(BlockDriverState **pbs, const char
*filename,
ret = bdrv_file_open(bs, filename, &options, flags & ~BDRV_O_PROTOCOL,
&local_err);
if (!ret) {
+ drv = bs->drv;
goto done;
} else if (bs->drv) {
goto close_and_fail;
diff --git a/tests/qemu-iotests/051 b/tests/qemu-iotests/051
index 46345fb..14694e1 100755
--- a/tests/qemu-iotests/051
+++ b/tests/qemu-iotests/051
@@ -78,6 +78,15 @@ run_qemu -drive
file="$TEST_IMG",format=qcow2,unknown_opt=1234
run_qemu -drive file="$TEST_IMG",format=qcow2,unknown_opt=foo
echo
+echo === Unknown protocol option ===
+echo
+
+run_qemu -drive file="$TEST_IMG",format=qcow2,file.unknown_opt=
+run_qemu -drive file="$TEST_IMG",format=qcow2,file.unknown_opt=on
+run_qemu -drive file="$TEST_IMG",format=qcow2,file.unknown_opt=1234
+run_qemu -drive file="$TEST_IMG",format=qcow2,file.unknown_opt=foo
+
+echo
echo === Invalid format ===
echo
diff --git a/tests/qemu-iotests/051.out b/tests/qemu-iotests/051.out
index 7de1870..f5e33ff 100644
--- a/tests/qemu-iotests/051.out
+++ b/tests/qemu-iotests/051.out
@@ -17,6 +17,21 @@ Testing: -drive
file=TEST_DIR/t.qcow2,format=qcow2,unknown_opt=foo
QEMU_PROG: -drive file=TEST_DIR/t.qcow2,format=qcow2,unknown_opt=foo: could
not open disk image TEST_DIR/t.qcow2: Block format 'qcow2' used by device
'ide0-hd0' doesn't support the option 'unknown_opt'
+=== Unknown protocol option ===
+
+Testing: -drive file=TEST_DIR/t.qcow2,format=qcow2,file.unknown_opt=
+QEMU_PROG: -drive file=TEST_DIR/t.qcow2,format=qcow2,file.unknown_opt=: could
not open disk image TEST_DIR/t.qcow2: Block protocol 'file' doesn't support the
option 'unknown_opt'
+
+Testing: -drive file=TEST_DIR/t.qcow2,format=qcow2,file.unknown_opt=on
+QEMU_PROG: -drive file=TEST_DIR/t.qcow2,format=qcow2,file.unknown_opt=on:
could not open disk image TEST_DIR/t.qcow2: Block protocol 'file' doesn't
support the option 'unknown_opt'
+
+Testing: -drive file=TEST_DIR/t.qcow2,format=qcow2,file.unknown_opt=1234
+QEMU_PROG: -drive file=TEST_DIR/t.qcow2,format=qcow2,file.unknown_opt=1234:
could not open disk image TEST_DIR/t.qcow2: Block protocol 'file' doesn't
support the option 'unknown_opt'
+
+Testing: -drive file=TEST_DIR/t.qcow2,format=qcow2,file.unknown_opt=foo
+QEMU_PROG: -drive file=TEST_DIR/t.qcow2,format=qcow2,file.unknown_opt=foo:
could not open disk image TEST_DIR/t.qcow2: Block protocol 'file' doesn't
support the option 'unknown_opt'
+
+
=== Invalid format ===
Testing: -drive file=TEST_DIR/t.qcow2,format=foo
--
1.8.1.4
