Date: Tue, 25 Nov 2003 14:51:32 +0100 From: Pawel Jakub Dawidek <nick@garage.freebsd.pl> To: Christian Laursen <xi@borderworlds.dk> Cc: freebsd-current@freebsd.org Subject: Re: panic: sleeping without a mutex (acd related) Message-ID: <20031125135132.GA76130@garage.freebsd.pl> In-Reply-To: <86ptfgvje8.fsf@borg.borderworlds.dk> References: <86ptfgvje8.fsf@borg.borderworlds.dk>
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On Tue, Nov 25, 2003 at 11:21:03AM +0100, Christian Laursen wrote:
+> I have been experiencing some random lockups after upgrading from
+> 5.1-RELEASE to 5.2-BETA.
+>=20
+> I then wen on and enabled all the debug options in my kernel config
+> hoping to be able to find the cause.
+>=20
+> But now I cannot boot at all. In the end of the boot process when
+> detecting ATA drives, I get this:
+>=20
+> ad0: 76319MB <ST380011A> [155061/16/63] at ata0-master UDMA100 =
=20
+> acd0-5: CDROM with 6 CD changer <CD-C68E> at ata1-master PIO4 =
=20
+> acd6: DVDROM <CREATIVEDVD5240E-1> at ata1-slave PIO4 =
=20
+> panic: sleeping without a mutex =
=20
+> Debugger("panic") =
=20
+> Stopped at Debugger+0x54: xchgl %ebx,in_Debugger.0 =
=20
+> db> =
=20
+> db> trace =
=20
+> Debugger(c06e3744,c07549a0,c06e3ec9,d861ab60,100) at Debugger+0x54 =
=20
+> panic(c06e3ec9,0,c06e3eb8,c06d6584,10) at panic+0xd5 =
=20
+> msleep(c45173d8,0,4c,c06d6584,0) at msleep+0x505 =
=20
+> acd_geom_access(c452de00,1,0,0,0) at acd_geom_access+0x115 =
=20
Yeah. There are two calls of tsleep(9) without timeout set
(in line 499, 509), so this KASSERT is reached:
KASSERT(timo !=3D 0 || mtx_owned(&Giant) || mtx !=3D NULL,
("sleeping without a mutex"));
--=20
Pawel Jakub Dawidek pawel@dawidek.net
UNIX Systems Programmer/Administrator http://garage.freebsd.pl
Am I Evil? Yes, I Am! http://cerber.sourceforge.net
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