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iommufd: Initialize the flags of vevent in iommufd_viommu_report_event()

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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: e8e1ef9b77 ("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>
This commit is contained in:
Yi Liu 2025-03-24 05:00:33 -07:00 committed by Jason Gunthorpe
parent 6d9500bb1f
commit 41464a4628
1 changed files with 1 additions and 1 deletions
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2
drivers/iommu/iommufd/driver.c
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@ -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;