On 12/20/19 8:37 AM, Yi Li wrote:

Causing a crash when storagePoolLookupByTargetPath because of Some types of storage pool have no target elements.

Core was generated by `/usr/sbin/libvirtd'. Program terminated with signal 11, Segmentation fault. (gdb) bt 0 0x0000ffff9e951388 in strcmp () from /lib64/libc.so.6 1 0x0000ffff92103e9c in storagePoolLookupByTargetPathCallback ( obj=0xffff7009aab0, opaque=0xffff801058b0) at storage/storage_driver.c:1649 2 0x0000ffff9f2c52a4 in virStoragePoolObjListSearchCb ( payload=0xffff801058b0, name=<optimized out>, opaque=<optimized out>) at conf/virstorageobj.c:476 3 0x0000ffff9f1f2f7c in virHashSearch (ctable=0xffff800f4f60, iter=iter@entry=0xffff9f2c5278 <virStoragePoolObjListSearchCb>, data=data@entry=0xffff95af7488, name=name@entry=0x0) at util/virhash.c:696 4 0x0000ffff9f2c64f0 in virStoragePoolObjListSearch (pools=0xffff800f2ce0, searcher=searcher@entry=0xffff92103e68 <storagePoolLookupByTargetPathCallback>, opaque=<optimized out>) at conf/virstorageobj.c:505 5 0x0000ffff92101f54 in storagePoolLookupByTargetPath (conn=0xffff5c0009f0, path=0xffff7009a850 "/vms/images") at storage/storage_driver.c:1672

Signed-off-by: Yi Li <yili@winhong.com> --- src/storage/storage_driver.c | 6 ++++++ 1 file changed, 6 insertions(+)

diff --git a/src/storage/storage_driver.c b/src/storage/storage_driver.c index a33328d..5863e1f 100644 --- a/src/storage/storage_driver.c +++ b/src/storage/storage_driver.c @@ -1713,6 +1713,12 @@ storagePoolLookupByTargetPathCallback(virStoragePoolObjPtr obj, return false;

def = virStoragePoolObjGetDef(obj); + + /* Some Storage pool types have no Target elements, + * so we should check it. */ + if (def->target.path == NULL) + return false; + return STREQ(path, def->target.path); }

Makes sense. You can use STREQ_NULLABLE which will cover that in a simpler way though. You can CC me on v2 and I'll review Thanks, Cole - Cole