Date: Wed, 28 Jan 2009 14:53:57 -0500 From: John Baldwin <jhb@freebsd.org> To: freebsd-current@freebsd.org Cc: Petr Holub <hopet@ics.muni.cz> Subject: Re: 8.0-SNAPSHOT200812 reversed locks Message-ID: <200901281453.58214.jhb@freebsd.org> In-Reply-To: <03a001c96f1b$3fa09b20$bee1d160$@muni.cz> References: <03a001c96f1b$3fa09b20$bee1d160$@muni.cz>
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On Monday 05 January 2009 4:51:51 am Petr Holub wrote: > Hi all, > > after booting a 8.0-SNAPSHOT200812 DVD on my T61p and entering > the fixit ``live'' mode, I've encountered the following > messages about reversed locks: > > DEBUG: ioctl(3, TIOCCONS, NULL) = 0 (success) > DEBUG: MADT: Found CPU APIC ID 0 enabled > DEBUG: MADT: Found CPU APIC ID 1 enabled > lock order reversal: > 1st 0xc6e43164 isofs (isofs) @ /usr/src/sys/kern/vfs_subr.c:2079 > 2nd 0xda8e7960 bufwait (bufwait) @ /usr/src/sys/kern/vfs_bio.c:2443 > 3rd 0xc6ed0488 isofs (isofs) @ /usr/src/sys/fs/cd9660/cd9660_vfsops.c:676 > KDB: stack backtrace: > db_trace_self_wrapper(...) at db_trace_self_wrapper+0x26 > kdb_backtrace(...) at kdb_backtrace+0x29 > _witness_debugger(...) at _witness_debugger+0x25 > witness_checkorder(...) at witness_checkorder+0x839 > __lockmgr_args(...) at __lockmgr_args+0x797 > cd9660_vget_internal(...) at cd9660_vget_internal+0x118 > cd9660_lookup(...) at cd9660_lookup+0x73f > VOP_CACHEDLOOKUP_APV(...) at VOP_CACHED_LOOKUP+0xa5 > vfs_cache_lookup(...) at vfs_cache_lookup+0xcc > VOP_LOOKUP_APV(...) at VOP_LOOKUP_APV+0xa5 > lookup(...) at lookup+0x0x57e > namei(...) at namei+0x04db > kern_accessat(...) at kern_accessat+0x94 > kern_access(...) at kern_access+0x36 > access(...) at access+0x29 > syscall(c67d1d38) at syscall+0x2a3 > Xint0x80_syscall() at Xint0x80_syscall+0x20 This one should be fixed by the cd9660 changes today. -- John Baldwin
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