Date: Tue, 30 Nov 2004 01:24:41 -0500 (EST) From: Jeff Roberson <jroberson@chesapeake.net> To: Jeremie Le Hen <jeremie@le-hen.org> Cc: Ivan Voras <ivoras@fer.hr> Subject: Re: Giantless VFS. Message-ID: <20041130012408.S85758@mail.chesapeake.net> In-Reply-To: <20041122223621.GG960@obiwan.tataz.chchile.org> References: <20041120000743.G18094@mail.chesapeake.net> <41A1C3BD.4010903@fer.hr> <20041122223621.GG960@obiwan.tataz.chchile.org>
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On Mon, 22 Nov 2004, Jeremie Le Hen wrote: > Hi Jeff, > > > I haven't received any feedback from the list though. I hope people are > > testing it. Perhaps the silence indicates universal success? :-) > > I have just tested your patch. It compiles like a charm. FYI, my > kernel have MUTEX_DEBUG, INVARIANTS and WITNESS enabled, but no > PREEMPTION. > While using my system with debug.mpsavevfs=1, I encountered two different > panics. (Sorry, I do not have a serial cable plugged into my laptop and > manual writing of hexadecimal addresses is very annoying.) Thanks, this was plenty of information. I have these fixed and I will post a new patch in a day or so. Cheers, Jeff > > The first one seems to be related to union mounts as when I use Tobias > Roth's profile.sh (which union mounts a vnode md(4) device over /etc) > `ls /etc' panics the system but when I don't have the mount, everything > seems to work : > panic: mutex Giant not owned at ../../../kern/vfs_vnops.c:962 > db> trace > kdb_enter() > panic() > _mtx_assert() > vn_write_suspend_wait() > ufs_inactive() > ufs_vnoperate() > vput() > getdirentries() > syscall() > > > The second one appeared just when I ask bash(1) to complete a command > name : it has to scan all directories from $HOME and stat(2) every files > in them. Here is the panic() : > Memory modified after free 0xc1ddc300 (252) val=c1df59c4 @ 0xc1ddc374 > panic: Most recently used by UFS mount > kdb_enter() > panic() > mtrash_ctor() > uma_zalloc_arg() > malloc() > fdinit() > fdcopy() > fork1() > fork() > syscall() > > > I hope this will help. > Best regads, > -- > Jeremie Le Hen > jeremie@le-hen.org >
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