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platform/x86/amd/hsmp: Ensure sock->metric_tbl_addr is non-NULL

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If metric table address is not allocated, accessing metrics_bin will
result in a NULL pointer dereference, so add a check.

Fixes: 5150542b8e ("platform/x86/amd/hsmp: add support for metrics tbl")
Signed-off-by: Suma Hegde <suma.hegde@amd.com>
Link: https://lore.kernel.org/r/20250807100637.952729-1-suma.hegde@amd.com
Reviewed-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>
Signed-off-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>
This commit is contained in:
Suma Hegde 2025-08-07 10:06:37 +00:00 committed by Ilpo Järvinen
parent dff6f36878
commit 2c78fb287e
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1 changed files with 5 additions and 0 deletions
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5
drivers/platform/x86/amd/hsmp/hsmp.c
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@ -356,6 +356,11 @@ ssize_t hsmp_metric_tbl_read(struct hsmp_socket *sock, char *buf, size_t size)
if (!sock || !buf)
return -EINVAL;
if (!sock->metric_tbl_addr) {
dev_err(sock->dev, "Metrics table address not available\n");
return -ENOMEM;
}
/* Do not support lseek(), also don't allow more than the size of metric table */
if (size != sizeof(struct hsmp_metric_table)) {
dev_err(sock->dev, "Wrong buffer size\n");