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RDMA/cxgb4: Free debugfs on registration failure

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c4iw_alloc() creates the per-device debugfs tree (dev->debugfs_root via
setup_debugfs()), but it is removed only in c4iw_remove(), not in
c4iw_dealloc().  When RDMA device registration fails, the registration
worker's err_dealloc_ctx path calls c4iw_dealloc() directly, bypassing
c4iw_remove(), so the debugfs dentries leak and outlive the freed
c4iw_dev.

Move debugfs_remove_recursive() into c4iw_dealloc() so every path that
frees ctx->dev also removes its debugfs tree.

Fixes: 49ea0c036e ("RDMA/iw_cxgb4: cleanup device debugfs entries on ULD remove")
Link: https://patch.msgid.link/r/20260806130128.465460-2-fanwu01@zju.edu.cn
Assisted-by: Codex:gpt-5.6
Signed-off-by: Fan Wu <fanwu01@zju.edu.cn>
Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>
This commit is contained in:
Fan Wu 2026-08-06 13:01:28 +00:00 committed by Jason Gunthorpe
parent a7100601aa
commit fe5c16bb62
1 changed files with 1 additions and 1 deletions
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2
drivers/infiniband/hw/cxgb4/device.c
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@ -933,6 +933,7 @@ static void c4iw_rdev_close(struct c4iw_rdev *rdev)
void c4iw_dealloc(struct uld_ctx *ctx)
{
debugfs_remove_recursive(ctx->dev->debugfs_root);
c4iw_rdev_close(&ctx->dev->rdev);
WARN_ON(!xa_empty(&ctx->dev->cqs));
WARN_ON(!xa_empty(&ctx->dev->qps));
@ -957,7 +958,6 @@ static void c4iw_remove(struct uld_ctx *ctx)
if (!ctx->dev)
return;
debugfs_remove_recursive(ctx->dev->debugfs_root);
c4iw_unregister_device(ctx->dev);
c4iw_dealloc(ctx);
}