Date: Mon, 18 Aug 2003 23:40:09 -0500 From: "Alan L. Cox" <alc@imimic.com> To: Kris Kennaway <kris@obsecurity.org> Cc: current@FreeBSD.org Subject: Re: LOR with page queue mutex and vm object Message-ID: <3F41AA29.A0CA0734@imimic.com> References: <20030819023149.GA75437@rot13.obsecurity.org>
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Kris Kennaway wrote: > > I got this on alpha just now (kernel updated 2 days ago, filesystems > created with -b 32768 -f 4096 to test reports of panics with these > settings, which may or may not be relevant). I don't think I've seen > this trace before...apologies if it's another false positive. > This is real. I'll look into it. Thanks, Alan > > 1st 0xfffffc00006e48d0 vm page queue mutex (vm page queue mutex) @ /a/asami/portbuild/alpha/src-client/sys/vm/vm_pageout.c:405 > 2nd 0xfffffc0005102e00 vm object (vm object) @ /a/asami/portbuild/alpha/src-client/sys/kern/vfs_bio.c:2280 > Stack backtrace: > db_print_backtrace() at db_print_backtrace+0x18 > backtrace() at backtrace+0x2c > witness_lock() at witness_lock+0x6fc > _mtx_lock_flags() at _mtx_lock_flags+0xc8 > vfs_setdirty() at vfs_setdirty+0x7c > bdwrite() at bdwrite+0x3b8 > ffs_update() at ffs_update+0x388 > ufs_inactive() at ufs_inactive+0x254 > ufs_vnoperate() at ufs_vnoperate+0x2c > vput() at vput+0x170 > vm_pageout_scan() at vm_pageout_scan+0x7ac > vm_pageout() at vm_pageout+0x3ac > fork_exit() at fork_exit+0x100 > exception_return() at exception_return > - > > ------------------------------------------------------------------------ > Part 1.2Type: application/pgp-signature
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