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| author |   Yi Liu <yi.l.liu@intel.com> | 2025-03-24 05:00:33 -0700 |
|---|---|---|
| committer |   Jason Gunthorpe <jgg@nvidia.com> | 2025-03-28 10:07:23 -0300 |
| commit | 41464a4628f3b15988bdc3dcd824c2e91064fc6f (patch) | |
| tree | 0975254237fa60c2cb5950f71134276b3511ed23 | |
| parent | iommufd/selftest: Add coverage for reporting max_pasid_log2 via IOMMU_HW_INFO (diff) | |
| download | wireguard-linux-41464a4628f3b15988bdc3dcd824c2e91064fc6f.tar.xz wireguard-linux-41464a4628f3b15988bdc3dcd824c2e91064fc6f.zip | |
iommufd: Initialize the flags of vevent in iommufd_viommu_report_event()
The vevent->header.flags is not initialized per allocation, hence the
vevent read path may treat the vevent as lost_events_header wrongly.
Use kzalloc() to alloc memory for new vevent.
Fixes: e8e1ef9b77a7 ("iommufd/viommu: Add iommufd_viommu_report_event helper")
Link: https://patch.msgid.link/r/20250324120034.5940-2-yi.l.liu@intel.com
Signed-off-by: Yi Liu <yi.l.liu@intel.com>
Reviewed-by: Nicolin Chen <nicolinc@nvidia.com>
Tested-by: Nicolin Chen <nicolinc@nvidia.com>
Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>
| -rw-r--r-- | drivers/iommu/iommufd/driver.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/iommu/iommufd/driver.c b/drivers/iommu/iommufd/driver.c index a08ff0f37fc6..922cd1fe7ec2 100644 --- a/drivers/iommu/iommufd/driver.c +++ b/drivers/iommu/iommufd/driver.c @@ -102,7 +102,7 @@ int iommufd_viommu_report_event(struct iommufd_viommu *viommu, goto out_set_header; } - vevent = kmalloc(struct_size(vevent, event_data, data_len), GFP_ATOMIC); + vevent = kzalloc(struct_size(vevent, event_data, data_len), GFP_ATOMIC); if (!vevent) { rc = -ENOMEM; vevent = &veventq->lost_events_header; |