From: Thomas Charbonnel <thomas@undata.org>
To: ALSA development <alsa-devel@alsa-project.org>
Subject: Rawmidi and CONFIG_DEBUG_SPINLOCK_SLEEP
Date: Thu, 29 Jan 2004 21:27:07 +0100 [thread overview]
Message-ID: <40196C9B.3050901@undata.org> (raw)
Hi,
I noticed this problem today using midi on my setup (alsa 1.0.1, kernel
2.6.1 with CONFIG_DEBUG_SPINLOCK_SLEEP) :
Debug: sleeping function called from invalid context at
include/asm/uaccess.h:473
in_atomic():1, irqs_disabled():1
Call Trace:
[<c012139c>] __might_sleep+0xac/0xe0
[<c010b170>] handle_signal+0xd0/0x140
[<c03955ef>] snd_rawmidi_kernel_read1+0x10f/0x170
[<c03957e7>] snd_rawmidi_read+0x147/0x1b0
[<c01131cf>] restore_i387_fxsave+0x8f/0xa0
[<c015b2f3>] vfs_read+0xd3/0x140
[<c015b59f>] sys_read+0x3f/0x60
[<c010b4bb>] syscall_call+0x7/0xb
I'm sorry I didn't check if this was fixed in 1.0.2, but though it was
worth mentioning. This caused regular (~ 1/second) dropouts in pd while
using midi.
Thomas
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next reply other threads:[~2004-01-29 20:43 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2004-01-29 20:27 Thomas Charbonnel [this message]
2004-01-31 8:44 ` Rawmidi and CONFIG_DEBUG_SPINLOCK_SLEEP Jaroslav Kysela
2004-02-01 11:18 ` Thomas Charbonnel
2004-02-01 14:30 ` Thomas Charbonnel
2004-02-01 16:37 ` Jaroslav Kysela
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