From: "Maxin B. John" <maxin.john@xxxxxxxx> cppcheck reported possible null pointer dereference in mdc_lib.c [lustre/lustre/mdc/mdc_lib.c:233]: (error) Possible null pointer dereference : op_data - otherwise it is redundant to check if op_data is null at line 226 Signed-off-by: Maxin B. John <maxin.john@xxxxxxxx> --- drivers/staging/lustre/lustre/mdc/mdc_lib.c | 41 ++++++++++++++------------- 1 file changed, 21 insertions(+), 20 deletions(-) diff --git a/drivers/staging/lustre/lustre/mdc/mdc_lib.c b/drivers/staging/lustre/lustre/mdc/mdc_lib.c index 91f6876..594e07c 100644 --- a/drivers/staging/lustre/lustre/mdc/mdc_lib.c +++ b/drivers/staging/lustre/lustre/mdc/mdc_lib.c @@ -223,29 +223,30 @@ void mdc_open_pack(struct ptlrpc_request *req, struct md_op_data *op_data, rec->cr_fsuid = from_kuid(&init_user_ns, current_fsuid()); rec->cr_fsgid = from_kgid(&init_user_ns, current_fsgid()); rec->cr_cap = cfs_curproc_cap_pack(); + if (op_data != NULL) { rec->cr_fid1 = op_data->op_fid1; rec->cr_fid2 = op_data->op_fid2; - } - rec->cr_mode = mode; - cr_flags = mds_pack_open_flags(flags, mode); - rec->cr_rdev = rdev; - rec->cr_time = op_data->op_mod_time; - rec->cr_suppgid1 = op_data->op_suppgids[0]; - rec->cr_suppgid2 = op_data->op_suppgids[1]; - rec->cr_bias = op_data->op_bias; - rec->cr_umask = current_umask(); - rec->cr_old_handle = op_data->op_handle; - - mdc_pack_capa(req, &RMF_CAPA1, op_data->op_capa1); - /* the next buffer is child capa, which is used for replay, - * will be packed from the data in reply message. */ - - if (op_data->op_name) { - tmp = req_capsule_client_get(&req->rq_pill, &RMF_NAME); - LOGL0(op_data->op_name, op_data->op_namelen, tmp); - if (op_data->op_bias & MDS_CREATE_VOLATILE) - cr_flags |= MDS_OPEN_VOLATILE; + rec->cr_mode = mode; + cr_flags = mds_pack_open_flags(flags, mode); + rec->cr_rdev = rdev; + rec->cr_time = op_data->op_mod_time; + rec->cr_suppgid1 = op_data->op_suppgids[0]; + rec->cr_suppgid2 = op_data->op_suppgids[1]; + rec->cr_bias = op_data->op_bias; + rec->cr_umask = current_umask(); + rec->cr_old_handle = op_data->op_handle; + + mdc_pack_capa(req, &RMF_CAPA1, op_data->op_capa1); + /* the next buffer is child capa, which is used for replay, + * will be packed from the data in reply message. */ + + if (op_data->op_name) { + tmp = req_capsule_client_get(&req->rq_pill, &RMF_NAME); + LOGL0(op_data->op_name, op_data->op_namelen, tmp); + if (op_data->op_bias & MDS_CREATE_VOLATILE) + cr_flags |= MDS_OPEN_VOLATILE; + } } if (lmm) { -- 1.7.10.4 _______________________________________________ devel mailing list devel@xxxxxxxxxxxxxxxxxxxxxx http://driverdev.linuxdriverproject.org/mailman/listinfo/driverdev-devel