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![Jaswinder Singh Rajput](/assets/img/avatar_default.png)
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: [<c108ac5c>] create_object+0x135/0x204 [<c108adfe>] kmemleak_alloc+0x26/0x4c [<c1087de2>] kmem_cache_alloc+0x72/0xff [<c126d2ac>] seq_create_client1+0x22/0x160 [<c126e3b6>] snd_seq_create_kernel_client+0x72/0xef [<c1485a05>] snd_seq_oss_create_client+0x86/0x142 [<c1485920>] alsa_seq_oss_init+0xf6/0x155 [<c1001059>] do_one_initcall+0x4f/0x111 [<c14655be>] kernel_init+0x115/0x166 [<c10032af>] kernel_thread_helper+0x7/0x10 [<ffffffff>] 0xffffffff unreferenced object 0xf688a580 (size 64): comm "swapper", pid 1, jiffies 4294670753 backtrace: [<c108ac5c>] create_object+0x135/0x204 [<c108adfe>] kmemleak_alloc+0x26/0x4c [<c1087de2>] kmem_cache_alloc+0x72/0xff [<c126f964>] snd_seq_pool_new+0x1c/0xb8 [<c126d311>] seq_create_client1+0x87/0x160 [<c126e3b6>] snd_seq_create_kernel_client+0x72/0xef [<c1485a05>] snd_seq_oss_create_client+0x86/0x142 [<c1485920>] alsa_seq_oss_init+0xf6/0x155 [<c1001059>] do_one_initcall+0x4f/0x111 [<c14655be>] kernel_init+0x115/0x166 [<c10032af>] kernel_thread_helper+0x7/0x10 [<ffffffff>] 0xffffffff unreferenced object 0xf6b0e480 (size 256): comm "swapper", pid 1, jiffies 4294670754 backtrace: [<c108ac5c>] create_object+0x135/0x204 [<c108adfe>] kmemleak_alloc+0x26/0x4c [<c1087de2>] kmem_cache_alloc+0x72/0xff [<c12725a0>] snd_seq_create_port+0x51/0x21c [<c126de50>] snd_seq_ioctl_create_port+0x57/0x13c [<c126d07a>] snd_seq_do_ioctl+0x4a/0x69 [<c126d0de>] snd_seq_kernel_client_ctl+0x33/0x49 [<c1485a74>] snd_seq_oss_create_client+0xf5/0x142 [<c1485920>] alsa_seq_oss_init+0xf6/0x155 [<c1001059>] do_one_initcall+0x4f/0x111 [<c14655be>] kernel_init+0x115/0x166 [<c10032af>] kernel_thread_helper+0x7/0x10 [<ffffffff>] 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 <jaswinderrajput@gmail.com> Signed-off-by: Takashi Iwai <tiwai@suse.de>
29 lines
1.2 KiB
Makefile
29 lines
1.2 KiB
Makefile
#
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# Makefile for ALSA
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# Copyright (c) 1999 by Jaroslav Kysela <perex@perex.cz>
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#
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snd-seq-device-objs := seq_device.o
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snd-seq-objs := seq.o seq_lock.o seq_clientmgr.o seq_memory.o seq_queue.o \
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seq_fifo.o seq_prioq.o seq_timer.o \
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seq_system.o seq_ports.o seq_info.o
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snd-seq-midi-objs := seq_midi.o
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snd-seq-midi-emul-objs := seq_midi_emul.o
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snd-seq-midi-event-objs := seq_midi_event.o
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snd-seq-dummy-objs := seq_dummy.o
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snd-seq-virmidi-objs := seq_virmidi.o
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obj-$(CONFIG_SND_SEQUENCER) += snd-seq.o snd-seq-device.o
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ifeq ($(CONFIG_SND_SEQUENCER_OSS),y)
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obj-$(CONFIG_SND_SEQUENCER) += snd-seq-midi-event.o
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obj-$(CONFIG_SND_SEQUENCER) += oss/
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endif
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obj-$(CONFIG_SND_SEQ_DUMMY) += snd-seq-dummy.o
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# Toplevel Module Dependency
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obj-$(CONFIG_SND_VIRMIDI) += snd-seq-virmidi.o snd-seq-midi-event.o
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obj-$(CONFIG_SND_RAWMIDI_SEQ) += snd-seq-midi.o snd-seq-midi-event.o
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obj-$(CONFIG_SND_OPL3_LIB_SEQ) += snd-seq-midi-event.o snd-seq-midi-emul.o
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obj-$(CONFIG_SND_OPL4_LIB_SEQ) += snd-seq-midi-event.o snd-seq-midi-emul.o
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obj-$(CONFIG_SND_SBAWE_SEQ) += snd-seq-midi-emul.o snd-seq-virmidi.o
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obj-$(CONFIG_SND_EMU10K1_SEQ) += snd-seq-midi-emul.o snd-seq-virmidi.o
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