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From: srini@kernel.org
To: gregkh@linuxfoundation.org
Cc: linux-kernel@vger.kernel.org,
	Eddie Lin <eddie.lin@oss.qualcomm.com>,
	stable@vger.kernel.org,
	Ekansh Gupta <ekansh.gupta@oss.qualcomm.com>,
	Srinivas Kandagatla <srini@kernel.org>
Subject: [PATCH 5/5] misc: fastrpc: fix memory leak in fastrpc_channel_ctx_free
Date: Fri, 24 Jul 2026 23:33:41 +0100	[thread overview]
Message-ID: <20260724223342.629168-6-srini@kernel.org> (raw)
In-Reply-To: <20260724223342.629168-1-srini@kernel.org>

From: Eddie Lin <eddie.lin@oss.qualcomm.com>

The 'ctx_idr' is initialized but never destroyed when
the channel context is freed, leading to a memory leak.
Add idr_destroy() to properly clean up the IDR resources.

Fixes: f6f9279f2bf0 ("misc: fastrpc: Add Qualcomm fastrpc basic driver model")
Cc: stable@vger.kernel.org
Signed-off-by: Eddie Lin <eddie.lin@oss.qualcomm.com>
Reviewed-by: Ekansh Gupta <ekansh.gupta@oss.qualcomm.com>
Signed-off-by: Srinivas Kandagatla <srini@kernel.org>
---
 drivers/misc/fastrpc.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/misc/fastrpc.c b/drivers/misc/fastrpc.c
index f8cbe30c5d5c..eb6c2a78d3c7 100644
--- a/drivers/misc/fastrpc.c
+++ b/drivers/misc/fastrpc.c
@@ -492,6 +492,7 @@ static void fastrpc_channel_ctx_free(struct kref *ref)
 
 	cctx = container_of(ref, struct fastrpc_channel_ctx, refcount);
 
+	idr_destroy(&cctx->ctx_idr);
 	kfree(cctx);
 }
 
-- 
2.53.0


      parent reply	other threads:[~2026-07-24 22:33 UTC|newest]

Thread overview: 6+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2026-07-24 22:33 [PATCH 0/5] fastrpc: fixes for 7.2 srini
2026-07-24 22:33 ` [PATCH 1/5] misc: fastrpc: Fix initial memory allocation for Audio PD memory pool srini
2026-07-24 22:33 ` [PATCH 2/5] misc: fastrpc: Remove buffer from list prior to unmap operation srini
2026-07-24 22:33 ` [PATCH 3/5] misc: fastrpc: take fl->lock when moving mmaps on interrupted invoke srini
2026-07-24 22:33 ` [PATCH 4/5] misc: fastrpc: fix channel ctx ref leak when session alloc fails srini
2026-07-24 22:33 ` srini [this message]

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