Date: Sun, 10 Sep 2006 17:15:56 -0400 From: Kris Kennaway <kris@obsecurity.org> To: Alexander Leidinger <Alexander@Leidinger.net> Cc: current@freebsd.org, Kris Kennaway <kris@obsecurity.org> Subject: Re: panic: System call old.recv returning with 1 locks held Message-ID: <20060910211556.GA9924@xor.obsecurity.org> In-Reply-To: <20060910230003.28fbc780@Magellan.Leidinger.net> References: <20060910194536.1b699733@Magellan.Leidinger.net> <20060910184359.GA7152@xor.obsecurity.org> <20060910230003.28fbc780@Magellan.Leidinger.net>
next in thread | previous in thread | raw e-mail | index | archive | help
[-- Attachment #1 --] On Sun, Sep 10, 2006 at 11:00:03PM +0200, Alexander Leidinger wrote: > Quoting Kris Kennaway <kris@obsecurity.org> (Sun, 10 Sep 2006 14:43:59 -0400): > > > Enable DEBUG_LOCKS and DEBUG_VFS_LOCKS then run 'show lockedvnods' > > from DDB to find out where the lockmgr lock was acquired. > > I've enabled them (and WITNESS, INVARIANTS and DIAGNOSTICS) and rebuild > the kernel. Not much files where rebuild. That's a warning sign; almost every file in the kernel should have been rebuilt when you turned on WITNESS and INVARIANTS. Perhaps you didn't run 'make depend'? > show lockedvnods did not show any locks. Odd, I thought your initial panic was from a held lockmgr lock, so it should have showed up here. > Other show XXX commands did > show nothing too. show lockchain showed a process. It's send01 (a LTP > testcase). The ddb bt command showed not much more. I got "syscall > -90" (dup2?) and the registers eip=0x28120706, esp=0xbfbfe9fc and > ebp=0xbfbfea28. > > While rebooting I got another panic: This panic also looks like a symptom of an inconsistent kernel: > at ../../../i386/i386/trap.c:461 #6 0xc057fefa in calltrap () > at ../../../i386/i386/exception.s:138 #7 0xc04e3035 in vfs_filteropt > (opts=0xc05b95d6, legal=0xc2960ae4) at ../../../kern/vfs_mount.c:1648 > #8 0xc2949dd9 in ?? () #9 0xc05b95d6 in ?? () #10 0xc2960ae4 in ?? () > #11 0x000003a1 in ?? () #12 0x00000008 in ?? () #13 0xc0607758 in > w_lock_list_free () #14 0xc05b46a4 in ?? () #15 0xc05aff94 in ?? () #16 > 0xc2460010 in ?? () #17 0xd49498d8 in ?? () #18 0xc04ba3fb in > fixup_filename (file=0xc05ef780 " ???^???") > at ../../../kern/subr_witness.c:764 #19 0xc04e2244 in vfs_donmount > (td=0xc26c66c0, fsflags=0xc292d000, fsoptions=0xd4949bb4) > at ../../../kern/vfs_mount.c:947 #20 0xc04e3962 in kernel_mount > (ma=0xc26c3610, flags=0x10000000) at pcpu.h:163 #21 0xc2949671 in ?? () Kris [-- Attachment #2 --] -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.5 (FreeBSD) iD8DBQFFBICMWry0BWjoQKURAjs/AJ9scyW8eS5CeqD3B6oYj4xJ2dFj7wCfQ7cp RAykjxqa8VyWxLMhkRpcD6U= =3old -----END PGP SIGNATURE-----
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?20060910211556.GA9924>