From f96e0808212ca284cc9398d7cd3f573786c1d890 Mon Sep 17 00:00:00 2001 From: Jaswinder Singh Rajput Date: Sun, 19 Jul 2009 21:58:34 +0530 Subject: [PATCH] ALSA: OSS sequencer should be initialized after snd_seq_system_client_init When build SND_SEQUENCER in kernel then OSS sequencer(alsa_seq_oss_init) is initialized before System (snd_seq_system_client_init) which leads to memory leak : unreferenced object 0xf6b0e680 (size 256): comm "swapper", pid 1, jiffies 4294670753 backtrace: [] create_object+0x135/0x204 [] kmemleak_alloc+0x26/0x4c [] kmem_cache_alloc+0x72/0xff [] seq_create_client1+0x22/0x160 [] snd_seq_create_kernel_client+0x72/0xef [] snd_seq_oss_create_client+0x86/0x142 [] alsa_seq_oss_init+0xf6/0x155 [] do_one_initcall+0x4f/0x111 [] kernel_init+0x115/0x166 [] kernel_thread_helper+0x7/0x10 [] 0xffffffff unreferenced object 0xf688a580 (size 64): comm "swapper", pid 1, jiffies 4294670753 backtrace: [] create_object+0x135/0x204 [] kmemleak_alloc+0x26/0x4c [] kmem_cache_alloc+0x72/0xff [] snd_seq_pool_new+0x1c/0xb8 [] seq_create_client1+0x87/0x160 [] snd_seq_create_kernel_client+0x72/0xef [] snd_seq_oss_create_client+0x86/0x142 [] alsa_seq_oss_init+0xf6/0x155 [] do_one_initcall+0x4f/0x111 [] kernel_init+0x115/0x166 [] kernel_thread_helper+0x7/0x10 [] 0xffffffff unreferenced object 0xf6b0e480 (size 256): comm "swapper", pid 1, jiffies 4294670754 backtrace: [] create_object+0x135/0x204 [] kmemleak_alloc+0x26/0x4c [] kmem_cache_alloc+0x72/0xff [] snd_seq_create_port+0x51/0x21c [] snd_seq_ioctl_create_port+0x57/0x13c [] snd_seq_do_ioctl+0x4a/0x69 [] snd_seq_kernel_client_ctl+0x33/0x49 [] snd_seq_oss_create_client+0xf5/0x142 [] alsa_seq_oss_init+0xf6/0x155 [] do_one_initcall+0x4f/0x111 [] kernel_init+0x115/0x166 [] kernel_thread_helper+0x7/0x10 [] 0xffffffff The correct order should be : System (snd_seq_system_client_init) should be initialized before OSS sequencer(alsa_seq_oss_init) which is equivalent to : 1. insmod sound/core/seq/snd-seq-device.ko 2. insmod sound/core/seq/snd-seq.ko 3. insmod sound/core/seq/snd-seq-midi-event.ko 4. insmod sound/core/seq/oss/snd-seq-oss.ko Including sound/core/seq/oss/Makefile after other seq modules fixes the ordering and memory leak. Signed-off-by: Jaswinder Singh Rajput Signed-off-by: Takashi Iwai --- sound/core/seq/Makefile | 7 ++----- 1 file changed, 2 insertions(+), 5 deletions(-) diff --git a/sound/core/seq/Makefile b/sound/core/seq/Makefile index 1bcb360330e5..941f64a853eb 100644 --- a/sound/core/seq/Makefile +++ b/sound/core/seq/Makefile @@ -3,10 +3,6 @@ # Copyright (c) 1999 by Jaroslav Kysela # -ifeq ($(CONFIG_SND_SEQUENCER_OSS),y) - obj-$(CONFIG_SND_SEQUENCER) += oss/ -endif - snd-seq-device-objs := seq_device.o snd-seq-objs := seq.o seq_lock.o seq_clientmgr.o seq_memory.o seq_queue.o \ seq_fifo.o seq_prioq.o seq_timer.o \ @@ -19,7 +15,8 @@ snd-seq-virmidi-objs := seq_virmidi.o obj-$(CONFIG_SND_SEQUENCER) += snd-seq.o snd-seq-device.o ifeq ($(CONFIG_SND_SEQUENCER_OSS),y) -obj-$(CONFIG_SND_SEQUENCER) += snd-seq-midi-event.o + obj-$(CONFIG_SND_SEQUENCER) += snd-seq-midi-event.o + obj-$(CONFIG_SND_SEQUENCER) += oss/ endif obj-$(CONFIG_SND_SEQ_DUMMY) += snd-seq-dummy.o -- 2.20.1