>-----Original Message-----
>From: Borislav Petkov <bp@xxxxxxxxx>
>Sent: 06 January 2025 13:38
>To: Shiju Jose <shiju.jose@xxxxxxxxxx>
>Cc: linux-edac@xxxxxxxxxxxxxxx; linux-cxl@xxxxxxxxxxxxxxx; linux-
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>Subject: Re: [PATCH v18 01/19] EDAC: Add support for EDAC device features
>control
>
>On Mon, Jan 06, 2025 at 12:09:57PM +0000, shiju.jose@xxxxxxxxxx wrote:
>> +int edac_dev_register(struct device *parent, char *name,
>> + void *private, int num_features,
>> + const struct edac_dev_feature *ras_features) {
>> + const struct attribute_group **ras_attr_groups;
>> + struct edac_dev_feat_ctx *ctx;
>> + int attr_gcnt = 0;
>> + int ret, feat;
>> +
>> + if (!parent || !name || !num_features || !ras_features)
>> + return -EINVAL;
>> +
>> + /* Double parse to make space for attributes */
>> + for (feat = 0; feat < num_features; feat++) {
>> + switch (ras_features[feat].ft_type) {
>> + /* Add feature specific code */
>> + default:
>> + return -EINVAL;
>> + }
>> + }
>> +
>> + ctx = kzalloc(sizeof(*ctx), GFP_KERNEL);
>> + if (!ctx)
>> + return -ENOMEM;
>> +
>> + ras_attr_groups = kcalloc(attr_gcnt + 1, sizeof(*ras_attr_groups),
>GFP_KERNEL);
>> + if (!ras_attr_groups) {
>> + ret = -ENOMEM;
>> + goto ctx_free;
>> + }
>> +
>> + attr_gcnt = 0;
>> + for (feat = 0; feat < num_features; feat++, ras_features++) {
>> + switch (ras_features->ft_type) {
>> + /* Add feature specific code */
>> + default:
>> + ret = -EINVAL;
>> + goto groups_free;
>> + }
>> + }
>> +
>> + ctx->dev.parent = parent;
>> + ctx->dev.bus = edac_get_sysfs_subsys();
>> + ctx->dev.type = &edac_dev_type;
>> + ctx->dev.groups = ras_attr_groups;
>> + ctx->private = private;
>> + dev_set_drvdata(&ctx->dev, ctx);
>> +
>> + ret = dev_set_name(&ctx->dev, name);
>> + if (ret)
>> + goto groups_free;
>> +
>> + ret = device_register(&ctx->dev);
>> + if (ret) {
>> + put_device(&ctx->dev);
>> + return ret;
>
>Who is freeing ctx and ras_attr_groups when you return here?
Hi Boris,
ctx and ras_attr_groups are freed in the callback
function for release edac_dev_release(struct device *dev).
Thanks,
Shiju
>
>--
>Regards/Gruss,
> Boris.
>
>https://people.kernel.org/tglx/notes-about-netiquette
