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Date: Sat, 6 Sep 2003 01:48:36 -0700 (PDT)
From: Dave <mudman@metafocus.net>
To: freebsd-current@freebsd.org
Message-ID: <20030906014720.Q3531@metafocus.net>
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Subject: sound lock
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I got this when I exited XFree86....
Reproduceable?  Not always...


acquiring duplicate lock of same type: "pcm channel"
 1st pcm0:record:0 @ /usr/src/sys/dev/sound/pcm/sound.c:195
 2nd pcm0:play:0 @ /usr/src/sys/dev/sound/pcm/sound.c:195
Stack backtrace:
backtrace(c05a25b4,c44a2a54,c059025d,c3,246) at backtrace+0x17
witness_lock(c44d4a40,8,c059025d,c3,c44d4bc0) at witness_lock+0x672
_mtx_lock_flags(c44d4a40,0,c059025d,c3,3) at _mtx_lock_flags+0xba
pcm_chnalloc(c44d6600,1,d3c,ffffffff,8) at pcm_chnalloc+0x56
dsp_open(c065e5f0,7,2000,c4a43ab0,c03e8fe2) at dsp_open+0x19f
spec_open(dd8ada50,dd8adb0c,c03f0e73,dd8ada50,0) at spec_open+0x2ab
spec_vnoperate(dd8ada50,0,c066b140,180,c4a43ab0) at spec_vnoperate+0x18
vn_open_cred(dd8adbc0,dd8adcc0,0,c4bffb00,a) at vn_open_cred+0x3f3
vn_open(dd8adbc0,dd8adcc0,0,a,c061862c) at vn_open+0x30
kern_open(c4a43ab0,c450c800,1,7,0) at kern_open+0x140
linux_open(c4a43ab0,dd8add10,c05ba3a0,3eb,3) at linux_open+0x110
syscall(2f,2f,2f,2874af73,802) at syscall+0x273
Xint0x80_syscall() at Xint0x80_syscall+0x1d
--- syscall (5), eip = 0x288476b4, esp = 0xbfbfe8e8, ebp = 0xbfbfe918 ---