From: Ekansh Gupta Date: Fri, 24 Jul 2026 22:33:37 +0000 (+0100) Subject: misc: fastrpc: Fix initial memory allocation for Audio PD memory pool X-Git-Tag: v7.2-rc7~8^2~14 X-Git-Url: http://git.ipfire.org/gitweb.cgi?a=commitdiff_plain;h=ab99eaafb0c4b412cfeb895a8cf091626e2bbd86;p=thirdparty%2Flinux.git misc: fastrpc: Fix initial memory allocation for Audio PD memory pool 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: 0871561055e66 ("misc: fastrpc: Add support for audiopd") Cc: stable@kernel.org Reviewed-by: Dmitry Baryshkov Signed-off-by: Ekansh Gupta Signed-off-by: Jianping Li Signed-off-by: Srinivas Kandagatla Link: https://patch.msgid.link/20260724223342.629168-2-srini@kernel.org Signed-off-by: Greg Kroah-Hartman --- diff --git a/drivers/misc/fastrpc.c b/drivers/misc/fastrpc.c index f3a49384586d..4f01ebfa6f95 100644 --- a/drivers/misc/fastrpc.c +++ b/drivers/misc/fastrpc.c @@ -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;