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misc: fastrpc: Fix initial memory allocation for Audio PD memory pool

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The initial buffer allocated for the Audio PD memory pool is never added
to the pool because pageslen is set to 0. As a result, the buffer is not
registered with Audio PD and is never used, causing a memory leak. Audio
PD immediately falls back to allocating memory from the remote heap since
the pool starts out empty.

Fix this by setting pageslen to 1 so that the initially allocated buffer
is correctly registered and becomes part of the Audio PD memory pool.

Fixes: 0871561055 ("misc: fastrpc: Add support for audiopd")
Cc: stable@kernel.org
Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@oss.qualcomm.com>
Signed-off-by: Ekansh Gupta <ekansh.gupta@oss.qualcomm.com>
Signed-off-by: Jianping Li <jianping.li@oss.qualcomm.com>
Signed-off-by: Srinivas Kandagatla <srini@kernel.org>
Link: https://patch.msgid.link/20260724223342.629168-2-srini@kernel.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Ekansh Gupta 2026-07-24 23:33:37 +01:00 committed by Greg Kroah-Hartman
parent f5098b6bae
commit ab99eaafb0
1 changed files with 4 additions and 4 deletions
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8
drivers/misc/fastrpc.c
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@ -1370,7 +1370,9 @@ static int fastrpc_init_create_static_process(struct fastrpc_user *fl,
err = PTR_ERR(name);
goto err;
}
inbuf.client_id = fl->client_id;
inbuf.namelen = init.namelen;
inbuf.pageslen = 0;
if (!fl->cctx->remote_heap) {
err = fastrpc_remote_heap_alloc(fl, fl->sctx->dev, init.memlen,
&fl->cctx->remote_heap);
@ -1393,12 +1395,10 @@ static int fastrpc_init_create_static_process(struct fastrpc_user *fl,
goto err_map;
}
scm_done = true;
inbuf.pageslen = 1;
}
}
inbuf.client_id = fl->client_id;
inbuf.namelen = init.namelen;
inbuf.pageslen = 0;
fl->pd = USER_PD;
args[0].ptr = (u64)(uintptr_t)&inbuf;