Date: Sun, 6 Nov 2005 21:19:57 +0800 From: Ariff Abdullah <skywizard@MyBSD.org.my> To: Watanabe Kazuhiro <CQG00620@nifty.ne.jp> Cc: freebsd-multimedia@freebsd.org Subject: Re: [patch] calling mss_unlock() twice (causes kernel panic) Message-ID: <20051106211957.67ec42d5.skywizard@MyBSD.org.my> In-Reply-To: <20051106124900.0941D24D2E@mail.asahi-net.or.jp> References: <20051106124900.0941D24D2E@mail.asahi-net.or.jp>
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On Sun, 06 Nov 2005 21:48:46 +0900 Watanabe Kazuhiro <CQG00620@nifty.ne.jp> wrote: > Hi, everyone. > > I have an AOpen AW37Pro soundcard which uses the Crystal CX4235 > soundchip. > > When I try to record on FreeBSD-7-current/i386 (CVSup'ed Nov. 5) > with wavrec (a part of ports/audio/wavplay), it causes kernel panic. > > panic: lock (sleep mutex) pcm2 not locked @ > /FreeBSD/FreeBSD-current/src/sys/modules/sound/driver/mss/../../../ > ../dev/sound/isa/mss.c:189 cpuid = 0 > KDB: enter: panic > [thread pid 30 tid 100035 ] > Stopped at kdb_enter+0x2b: nop > db> trace > Tracing pid 30 tid 100035 td 0xc21b4480 > kdb_enter(c086b04b) at kdb_enter+0x2b > panic(c086f5f4,c0886f8e,c22d9860,c0acc397,bd) at panic+0x127 > witness_unlock(c22ef4c0,8,c0acc397,bd) at witness_unlock+0xc0 > _mtx_unlock_flags(c22ef4c0,0,c0acc397,bd,cbfefcd4) at > _mtx_unlock_flags+0x5b > mss_unlock(c231bd80,20983d18,c22ef440,c21cd880,0) at mss_unlock+0x17 > mss_intr(c2318b00) at mss_intr+0x129 > ithread_execute_handlers(c22e8000,c21cd880) at > ithread_execute_handlers+0xe6 > ithread_loop(c22d9940,cbfefd38,c22d9940,c062cefc,0) at > ithread_loop+0x67 fork_exit(c062cefc,c22d9940,cbfefd38) at > fork_exit+0xa4 fork_trampoline() at fork_trampoline+0x8 > --- trap 0x1, eip = 0, esp = 0xcbfefd6c, ebp = 0 --- > db> > Oops.. that was really a typo. Thanks, I'll fix it. -- Ariff Abdullah MyBSD http://www.MyBSD.org.my (IPv6/IPv4) http://staff.MyBSD.org.my (IPv6/IPv4) http://tomoyo.MyBSD.org.my (IPv6/IPv4)
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