Date: Thu, 06 Feb 2003 16:07:26 -0800 From: Lars Eggert <larse@ISI.EDU> To: current@freebsd.org Subject: pcm channel duplicate lock Message-ID: <3E42F8BE.1060706@isi.edu>
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Got thsi when opening gnomemeeting2 while having xmms playing:
acquiring duplicate lock of same type: "pcm channel"
1st pcm0:record:0 @ /usr/src/sys/dev/sound/pcm/sound.c:191
2nd pcm0:play:0 @ /usr/src/sys/dev/sound/pcm/sound.c:191
Debugger("witness_lock")
Stopped at Debugger+0x5a: xchgl %ebx,in_Debugger.0
db> trace
Debugger(c0328da1,c6283a54,c0532609,bf,eb3828ac) at Debugger+0x5a
witness_lock(c635ce40,8,c0532609,bf,eb3828d4) at witness_lock+0x142
_mtx_lock_flags(c635ce40,0,c0532609,bf,c5e5) at _mtx_lock_flags+0x63
pcm_chnalloc(c21a9e00,1,c5e5,ffffffff,8) at pcm_chnalloc+0x66
dsp_open(c03a6a50,7,2000,c6612780,c0534380) at dsp_open+0x12f
spec_open(eb3829c8,eb382ae4,c0217796,eb3829c8,c03b3ae0) at spec_open+0x37d
spec_vnoperate(eb3829c8,c03b3ae0,0,180,c6612780) at spec_vnoperate+0x18
vn_open_cred(eb382bd4,eb382cd4,0,c7575600,eb382cc0) at vn_open_cred+0x306
vn_open(eb382bd4,eb382cd4,0,295,eb382b20) at vn_open+0x29
kern_open(c6612780,888ceb0,0,7,0) at kern_open+0x197
open(c6612780,eb382d10,c0363f83,407,c6610c50) at open+0x30
syscall(875002f,2f,bfbf002f,6,0) at syscall+0x3d6
Xint0x80_syscall() at Xint0x80_syscall+0x1d
--- syscall (5, FreeBSD ELF32, open), eip = 0x2932e273, esp =
0xbfa65abc, ebp = 0xbfa65ad8 ---
Lars
--
Lars Eggert <larse@isi.edu> USC Information Sciences Institute
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