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Differential D43090

nvme: Initialize HMB entries before loading them into the controller
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Authored by markj on Dec 18 2023, 10:30 PM.
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rGdcd747fda58a: nvme: Initialize HMB entries before loading them into the controller
rGd9b7301bb791: nvme: Initialize HMB entries before loading them into the controller
Summary

struct nvme_hmb_desc contains a pad field which was not getting
initialized before being synced. This doesn't have much consequence but
triggers a report from KMSAN, which verifies that host-filled DMA memory
is initialized before it is made visible to the device. So, let's just
initialize it properly.

Reported by: KMSAN
Sponsored by: Klara, Inc.
Sponsored by: Juniper Networks, Inc.

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rG FreeBSD src repository
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Buildable 54992
Build 51881: arc lint + arc unit

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PathSize
sys/
dev/
nvme/
2 lines

Diff 131535

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sys/dev/nvme/nvme_ctrlr.c

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