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Message-Id: <1453963027-19770-4-git-send-email-suganath-prabu.subramani@avagotech.com> Date: Thu, 28 Jan 2016 12:07:00 +0530 From: Suganath prabu Subaramani <suganath-prabu.subramani@...gotech.com> To: JBottomley@...allels.com, jejb@...nel.org, hch@...radead.org Cc: martin.petersen@...cle.com, linux-scsi@...r.kernel.org, Sathya.Prakash@...gotech.com, kashyap.desai@...gotech.com, krishnaraddi.mankani@...gotech.com, linux-kernel@...r.kernel.org, suganath-prabu.subramani@...gotech.com, chaitra.basappa@...gotech.com, sreekanth.reddy@...gotech.com Subject: [mpt3sas driver 03/10] mpt3sas: Fix static analyzer(coverity) tool identified defects From: Suganath prabu Subramani <suganath-prabu.subramani@...gotech.com> 1.Wrong size of argument is being passed The size of struct being passed as an argument to memset func and area of memory being pointed by an instance of struct in memset func should be of same structure type. 2.Dereference null return value 3.Array compared against '0' Check whether value pointed by particular index of an array is null or not in "if" statement. Signed-off-by: Suganath prabu Subramani <suganath-prabu.subramani@...gotech.com> Signed-off-by: Chaitra P B <chaitra.basappa@...gotech.com> --- drivers/scsi/mpt3sas/mpt3sas_ctl.c | 3 ++- drivers/scsi/mpt3sas/mpt3sas_scsih.c | 4 ++-- drivers/scsi/mpt3sas/mpt3sas_transport.c | 2 +- 3 files changed, 5 insertions(+), 4 deletions(-) diff --git a/drivers/scsi/mpt3sas/mpt3sas_ctl.c b/drivers/scsi/mpt3sas/mpt3sas_ctl.c index ef9971e..d872587 100644 --- a/drivers/scsi/mpt3sas/mpt3sas_ctl.c +++ b/drivers/scsi/mpt3sas/mpt3sas_ctl.c @@ -401,7 +401,8 @@ mpt3sas_ctl_event_callback(struct MPT3SAS_ADAPTER *ioc, u8 msix_index, Mpi2EventNotificationReply_t *mpi_reply; mpi_reply = mpt3sas_base_get_reply_virt_addr(ioc, reply); - mpt3sas_ctl_add_to_event_log(ioc, mpi_reply); + if (mpi_reply) + mpt3sas_ctl_add_to_event_log(ioc, mpi_reply); return 1; } diff --git a/drivers/scsi/mpt3sas/mpt3sas_scsih.c b/drivers/scsi/mpt3sas/mpt3sas_scsih.c index 0fb4ccd..686a46a 100644 --- a/drivers/scsi/mpt3sas/mpt3sas_scsih.c +++ b/drivers/scsi/mpt3sas/mpt3sas_scsih.c @@ -2399,7 +2399,7 @@ _scsih_tm_display_info(struct MPT3SAS_ADAPTER *ioc, struct scsi_cmnd *scmd) (unsigned long long) sas_device->enclosure_logical_id, sas_device->slot); - if (sas_device->connector_name) + if (sas_device->connector_name[0] != '\0') starget_printk(KERN_INFO, starget, "enclosure level(0x%04x),connector name(%s)\n", sas_device->enclosure_level, @@ -3134,7 +3134,7 @@ _scsih_tm_tr_send(struct MPT3SAS_ADAPTER *ioc, u16 handle) " slot(%d)\n", ioc->name, (unsigned long long) sas_device->enclosure_logical_id, sas_device->slot)); - if (sas_device->connector_name) + if (sas_device->connector_name[0] != '\0') dewtprintk(ioc, pr_info(MPT3SAS_FMT "setting delete flag: enclosure level(0x%04x)," " connector name( %s)\n", ioc->name, diff --git a/drivers/scsi/mpt3sas/mpt3sas_transport.c b/drivers/scsi/mpt3sas/mpt3sas_transport.c index df08aeb..6a84b82 100644 --- a/drivers/scsi/mpt3sas/mpt3sas_transport.c +++ b/drivers/scsi/mpt3sas/mpt3sas_transport.c @@ -1600,7 +1600,7 @@ _transport_phy_reset(struct sas_phy *phy, int hard_reset) SMP_PHY_CONTROL_LINK_RESET); /* handle hba phys */ - memset(&mpi_request, 0, sizeof(Mpi2SasIoUnitControlReply_t)); + memset(&mpi_request, 0, sizeof(Mpi2SasIoUnitControlRequest_t)); mpi_request.Function = MPI2_FUNCTION_SAS_IO_UNIT_CONTROL; mpi_request.Operation = hard_reset ? MPI2_SAS_OP_PHY_HARD_RESET : MPI2_SAS_OP_PHY_LINK_RESET; -- 1.8.3.1
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