From: Dan Carpenter <dan.carpenter-QHcLZuEGTsvQT0dZR+AlfA@public.gmane.org>
To: jroedel-l3A5Bk7waGM@public.gmane.org
Cc: iommu-cunTk1MwBs9QetFLy7KEm3xJsTq8ys+cHZ5vskTnxNA@public.gmane.org
Subject: [bug report] iommu/arm-smmu: Make use of the iommu_register interface
Date: Wed, 15 Feb 2017 11:36:48 +0300 [thread overview]
Message-ID: <20170215083648.GA12604@mwanda> (raw)
Hello Joerg Roedel,
This is a semi-automatic email about new static checker warnings.
The patch 9648cbc9625b: "iommu/arm-smmu: Make use of the
iommu_register interface" from Feb 1, 2017, leads to the following
Smatch complaint:
drivers/iommu/arm-smmu-v3.c:1810 arm_smmu_remove_device()
warn: variable dereferenced before check 'master' (see line 1809)
drivers/iommu/arm-smmu-v3.c
1808 master = fwspec->iommu_priv;
1809 smmu = master->smmu;
^^^^^^^^^^^^
New dereference.
1810 if (master && master->ste.valid)
^^^^^^
Old code checked for NULL.
1811 arm_smmu_detach_dev(dev);
1812 iommu_group_remove_device(dev);
regards,
dan carpenter
next reply other threads:[~2017-02-15 8:36 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-02-15 8:36 Dan Carpenter [this message]
2017-02-22 11:00 ` [bug report] iommu/arm-smmu: Make use of the iommu_register interface Joerg Roedel
[not found] ` <20170222110042.GC4154-l3A5Bk7waGM@public.gmane.org>
2017-02-22 11:26 ` Robin Murphy
[not found] ` <96801505-0808-1ab0-8d10-2b6f22bec35f-5wv7dgnIgG8@public.gmane.org>
2017-02-22 12:17 ` Joerg Roedel
-- strict thread matches above, loose matches on Subject: below --
2018-03-05 14:33 Dan Carpenter
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