Date: Mon, 22 Apr 1996 04:30:03 +1000 From: Bruce Evans <bde@zeta.org.au> To: jdp@polstra.com, jkh@time.cdrom.com Cc: freebsd-current@FreeBSD.org Subject: Re: Another 2.2-SNAP soon, folks? Message-ID: <199604211830.EAA32380@godzilla.zeta.org.au>
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>I would very much like to see gzipped executables working again. >Without them, you can't use the fixit disk. (I know, I know, you can >use it with an older install disk. But that's not quite the same.) I sent this to the wrong list: --- I have been debugging the kernel gzip and rebooting the test systems a lot. exec_gzip_imgact() works fine if the final vm_map_remove() is omitted. Otherwise it hangs in various places in vm_map_remove() doing harmless-looking memory accesses, except the vm_map_remove() works OK if it is called only on every second gzip exec (after the previous one has left suitable garbage). It looks like a reference counting problem. The mapping that causes the problem is particularly simple. --- It might be acceptable to simply skip the vm_map_remove() for the fixit version. The vm_map_remove() is for a 4K mmapped window on the input file. There seems to be no problem removing and reallocating this window every 4K for input files larger than 4K. Brucehome | help
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