d/freebsd-nq
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

Fixed a null pointer panic in spc_free(). swap_pager_putpages()

Browse Source 
almost always causes this panic for the curproc != pageproc case.
This case apparently doesn't happen in normal operation, but it
happens when vm_page_alloc_contig() is called when there is a memory
hogging application that hasn't already been paged out.

PR:		8632
Reviewed by:	info@opensound.com (Dev Mazumdar), dg
Broken in:	rev.1.89 (1998/02/23)
This commit is contained in:
Bruce Evans 1998-11-19 06:20:42 +00:00
parent cbffe59841
commit 04258de351
1 changed files with 9 additions and 7 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

16
sys/vm/swap_pager.c
View File

@ -39,7 +39,7 @@
* from: Utah $Hdr: swap_pager.c 1.4 91/04/30$
*
* @(#)swap_pager.c 8.9 (Berkeley) 3/21/94
* $Id: swap_pager.c,v 1.102 1998/10/13 08:24:42 dg Exp $
* $Id: swap_pager.c,v 1.103 1998/10/31 15:31:28 peter Exp $
*/
/*
@ -1535,12 +1535,14 @@ swap_pager_putpages(object, m, count, sync, rtvals)
}
}
if (bp->b_rcred != NOCRED)
crfree(bp->b_rcred);
if (bp->b_wcred != NOCRED)
crfree(bp->b_wcred);
spc_free(spc);
if (spc != NULL) {
if (bp->b_rcred != NOCRED)
crfree(bp->b_rcred);
if (bp->b_wcred != NOCRED)
crfree(bp->b_wcred);
spc_free(spc);
} else
relpbuf(bp);
if (swap_pager_free_pending)
swap_pager_sync();