Takashi Iwai 66efdc71d9 ALSA: seq: Fix missing error handling in snd_seq_timer_open() ... snd_seq_timer_open() didn't catch the whole error path but let through if the timer id is a slave. This may lead to Oops by accessing the uninitialized pointer. BUG: unable to handle kernel NULL pointer dereference at 00000000000002ae IP: [<ffffffff819b3477>] snd_seq_timer_open+0xe7/0x130 PGD 785cd067 PUD 76964067 PMD 0 Oops: 0002 [#4] SMP CPU 0 Pid: 4288, comm: trinity-child7 Tainted: G D W 3.9.0-rc1+ #100 Bochs Bochs RIP: 0010:[<ffffffff819b3477>] [<ffffffff819b3477>] snd_seq_timer_open+0xe7/0x130 RSP: 0018:ffff88006ece7d38 EFLAGS: 00010246 RAX: 0000000000000286 RBX: ffff88007851b400 RCX: 0000000000000000 RDX: 000000000000ffff RSI: ffff88006ece7d58 RDI: ffff88006ece7d38 RBP: ffff88006ece7d98 R08: 000000000000000a R09: 000000000000fffe R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000 R13: ffff8800792c5400 R14: 0000000000e8f000 R15: 0000000000000007 FS: 00007f7aaa650700(0000) GS:ffff88007f800000(0000) GS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00000000000002ae CR3: 000000006efec000 CR4: 00000000000006f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400 Process trinity-child7 (pid: 4288, threadinfo ffff88006ece6000, task ffff880076a8a290) Stack: 0000000000000286 ffffffff828f2be0 ffff88006ece7d58 ffffffff810f354d 65636e6575716573 2065756575712072 ffff8800792c0030 0000000000000000 ffff88006ece7d98 ffff8800792c5400 ffff88007851b400 ffff8800792c5520 Call Trace: [<ffffffff810f354d>] ? trace_hardirqs_on+0xd/0x10 [<ffffffff819b17e9>] snd_seq_queue_timer_open+0x29/0x70 [<ffffffff819ae01a>] snd_seq_ioctl_set_queue_timer+0xda/0x120 [<ffffffff819acb9b>] snd_seq_do_ioctl+0x9b/0xd0 [<ffffffff819acbe0>] snd_seq_ioctl+0x10/0x20 [<ffffffff811b9542>] do_vfs_ioctl+0x522/0x570 [<ffffffff8130a4b3>] ? file_has_perm+0x83/0xa0 [<ffffffff810f354d>] ? trace_hardirqs_on+0xd/0x10 [<ffffffff811b95ed>] sys_ioctl+0x5d/0xa0 [<ffffffff813663fe>] ? trace_hardirqs_on_thunk+0x3a/0x3f [<ffffffff81faed69>] system_call_fastpath+0x16/0x1b Reported-and-tested-by: Tommi Rantala <tt.rantala@gmail.com> Cc: <stable@vger.kernel.org> Signed-off-by: Takashi Iwai <tiwai@suse.de>		2013-03-11 09:40:36 +01:00
..
oss	ALSA: core: fix NULL checking in snd_pcm_plug_slave_size()	2012-11-14 08:03:31 +01:00
seq	ALSA: seq: Fix missing error handling in snd_seq_timer_open()	2013-03-11 09:40:36 +01:00
compress_offload.c	ALSA: compress: add support for gapless playback	2013-02-14 12:30:22 +01:00
control_compat.c
control.c	ALSA: Avoid endless sleep after disconnect	2012-10-30 11:07:15 +01:00
ctljack.c
device.c
hrtimer.c
hwdep_compat.c
hwdep.c	ALSA: Avoid endless sleep after disconnect	2012-10-30 11:07:15 +01:00
info_oss.c
info.c	new helper: file_inode(file)	2013-02-22 23:31:31 -05:00
init.c	ALSA: Add a reference counter to card instance	2012-10-30 11:07:10 +01:00
isadma.c
jack.c
Kconfig
Makefile
memalloc.c
memory.c
misc.c
pcm_compat.c	ALSA: core: fix 64-bit SNDRV_PCM_IOCTL_STATUS ABI breakage	2012-10-28 09:52:37 +01:00
pcm_lib.c	ALSA: core: add hooks for audio timestamps	2012-10-23 16:13:48 +02:00
pcm_memory.c	ALSA: Make snd_sgbuf_get_{ptr|addr}() available for non-SG cases	2012-09-23 11:24:42 +02:00
pcm_misc.c
pcm_native.c	new helper: file_inode(file)	2013-02-22 23:31:31 -05:00
pcm_timer.c
pcm.c	ALSA: PCM: Remove redundant null check before kfree	2012-11-21 10:43:26 +01:00
rawmidi_compat.c
rawmidi.c	ALSA: Avoid endless sleep after disconnect	2012-10-30 11:07:15 +01:00
rtctimer.c
sgbuf.c	ALSA: Make snd_sgbuf_get_{ptr|addr}() available for non-SG cases	2012-09-23 11:24:42 +02:00
sound_oss.c	ALSA: Fix card refcount unbalance	2012-11-08 14:36:18 +01:00
sound.c	ALSA: Fix card refcount unbalance	2012-11-08 14:36:18 +01:00
timer_compat.c
timer.c
vmaster.c	ALSA: vmaster: Fix slave change notification	2013-03-05 15:43:39 +01:00