Date: Wed, 17 May 1995 12:33:15 -0700 (PDT) From: Steven G Kargl <kargl@troutmask.apl.washington.edu> To: freebsd-current@freefall.cdrom.com (FreeBSD Current) Cc: phk@ref.tfs.com Subject: RE: panic: swfree Message-ID: <199505171933.MAA00176@troutmask.apl.washington.edu>
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>A typical "one off" error. Please test this patch.
>
>(David, Rod & John please review.)
>Poul-Henning
>Index: vm_swap.c
>===================================================================
>RCS file: /home/ncvs/src/sys/vm/vm_swap.c,v
>retrieving revision 1.17
>diff -u -r1.17 vm_swap.c
>--- 1.17 1995/05/14 03:00:10
>+++ vm_swap.c 1995/05/17 18:08:26
>@@ -241,15 +241,11 @@
> sp->sw_nblks = nblks;
>
> if (nblks * nswdev > nswap)
>- nswap = nblks * nswdev;
>+ nswap = (nblks+1) * nswdev;
>
> for (dvbase = dmmax; dvbase < nblks; dvbase += dmmax) {
> blk = nblks - dvbase;
>
>- if ((vsbase = index * dmmax + dvbase * nswdev) >= nswap)
>- panic("swfree");
>- if (blk > dmmax)
>- blk = dmmax;
> /* XXX -- we need to exclude the first cluster as above */
> /* but for now, this will work fine... */
> rlist_free(&swaplist, vsbase, vsbase + blk - 1);
>
This patch gets rid of the swfree panic, but introduced a new one:
panic: rlist_free: free start overlaps already freed area at list tail
--
Steven G. Kargl | Phone: 206-685-4677 |
Applied Physics Lab | Fax: 206-543-6785 |
Univ. of Washington |---------------------|
1013 NE 40th St | FreeBSD 2.1-current |
Seattle, WA 98105 |---------------------|
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