Hi; running a 'make check' on a clang sanitizer build one of the iotests falls over due to a NULL pointer being passed to memset():
TEST iotest-qcow2: nbd-qemu-allocation [fail] QEMU -- "/mnt/nvmedisk/linaro/qemu-from-laptop/qemu/build/arm-clang/tests/qemu-iotests/../../qemu-system-aarch64" -nodefaults -display none -accel qtest -machine virt QEMU_IMG -- "/mnt/nvmedisk/linaro/qemu-from-laptop/qemu/build/arm-clang/tests/qemu-iotests/../../qemu-img" QEMU_IO -- "/mnt/nvmedisk/linaro/qemu-from-laptop/qemu/build/arm-clang/tests/qemu-iotests/../../qemu-io" --cache writeback --aio threads -f qcow2 QEMU_NBD -- "/mnt/nvmedisk/linaro/qemu-from-laptop/qemu/build/arm-clang/tests/qemu-iotests/../../qemu-nbd" IMGFMT -- qcow2 IMGPROTO -- file PLATFORM -- Linux/x86_64 e104462 5.4.0-89-generic TEST_DIR -- /mnt/nvmedisk/linaro/qemu-from-laptop/qemu/build/arm-clang/tests/qemu-iotests/scratch SOCK_DIR -- /tmp/tmp13ihi_hj GDB_OPTIONS -- VALGRIND_QEMU -- PRINT_QEMU_OUTPUT -- --- /home/petmay01/linaro/qemu-from-laptop/qemu/tests/qemu-iotests/tests/nbd-qemu-allocation.out +++ nbd-qemu-allocation.out.bad @@ -14,6 +14,8 @@ [{ "start": 0, "length": 1048576, "depth": 1, "present": true, "zero": false, "data": true, "offset": 327680}, { "start": 1048576, "length": 2097152, "depth": 0, "present": true, "zero": false, "data": true, "offset": 327680}, { "start": 3145728, "length": 1048576, "depth": 1, "present": false, "zero": true, "data": false}] +../../nbd/server.c:1027:16: runtime error: null pointer passed as argument 1, which is declared to never be null +/usr/include/string.h:61:62: note: nonnull attribute specified here exports available: 1 export: '' size: 4194304 TEST iotest-qcow2: qsd-jobs Not run: 172 186 192 220 287 Failures: nbd-qemu-allocation Failed 1 of 118 iotests Does this look familiar ? -- PMM