From: Justin Tee justin.tee@broadcom.com
[ Upstream commit 312320b0e0ec21249a17645683fe5304d796aec1 ]
If kzalloc() fails in lpfc_sli4_cgn_params_read(), then we rely on lpfc_read_object()'s routine to NULL check pdata.
Currently, an early return error is thrown from lpfc_read_object() to protect us from NULL ptr dereference, but the errno code is -ENODEV.
Change the errno code to a more appropriate -ENOMEM.
Reported-by: Kang Chen void0red@gmail.com Link: https://lore.kernel.org/all/20230226102338.3362585-1-void0red@gmail.com Signed-off-by: Justin Tee justin.tee@broadcom.com Link: https://lore.kernel.org/r/20230228044336.5195-1-justintee8345@gmail.com Signed-off-by: Martin K. Petersen martin.petersen@oracle.com Signed-off-by: Sasha Levin sashal@kernel.org --- drivers/scsi/lpfc/lpfc_init.c | 2 ++ drivers/scsi/lpfc/lpfc_sli.c | 4 ---- 2 files changed, 2 insertions(+), 4 deletions(-)
diff --git a/drivers/scsi/lpfc/lpfc_init.c b/drivers/scsi/lpfc/lpfc_init.c index 855817f6fe671..f79299f6178cd 100644 --- a/drivers/scsi/lpfc/lpfc_init.c +++ b/drivers/scsi/lpfc/lpfc_init.c @@ -7056,6 +7056,8 @@ lpfc_sli4_cgn_params_read(struct lpfc_hba *phba) /* Find out if the FW has a new set of congestion parameters. */ len = sizeof(struct lpfc_cgn_param); pdata = kzalloc(len, GFP_KERNEL); + if (!pdata) + return -ENOMEM; ret = lpfc_read_object(phba, (char *)LPFC_PORT_CFG_NAME, pdata, len);
diff --git a/drivers/scsi/lpfc/lpfc_sli.c b/drivers/scsi/lpfc/lpfc_sli.c index 7d333167047f5..1f1d346adc038 100644 --- a/drivers/scsi/lpfc/lpfc_sli.c +++ b/drivers/scsi/lpfc/lpfc_sli.c @@ -22376,10 +22376,6 @@ lpfc_read_object(struct lpfc_hba *phba, char *rdobject, uint32_t *datap, struct lpfc_dmabuf *pcmd; u32 rd_object_name[LPFC_MBX_OBJECT_NAME_LEN_DW] = {0};
- /* sanity check on queue memory */ - if (!datap) - return -ENODEV; - mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL); if (!mbox) return -ENOMEM;