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Code Issues Releases Activity

Check for curproc != NULL before dereferencing it.

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This commit is contained in:
David Greenman 1995-04-30 05:09:13 +00:00
parent 3586bcab62
commit fc3d49a9dc
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=8176
1 changed files with 6 additions and 5 deletions
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11
sys/kern/vfs_bio.c
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@ -18,7 +18,7 @@
* 5. Modifications may be freely made to this file if the above conditions
* are met.
*
* $Id: vfs_bio.c,v 1.41 1995/04/16 11:45:30 davidg Exp $
* $Id: vfs_bio.c,v 1.42 1995/04/16 12:02:42 davidg Exp $
*/
/*
@ -169,7 +169,7 @@ bread(struct vnode * vp, daddr_t blkno, int size, struct ucred * cred,
/* if not found in cache, do some I/O */
if ((bp->b_flags & B_CACHE) == 0) {
if (curproc && curproc->p_stats) /* count block I/O */
if (curproc != NULL)
curproc->p_stats->p_ru.ru_inblock++;
bp->b_flags |= B_READ;
bp->b_flags &= ~(B_DONE | B_ERROR | B_INVAL);
@ -202,7 +202,7 @@ breadn(struct vnode * vp, daddr_t blkno, int size,
/* if not found in cache, do some I/O */
if ((bp->b_flags & B_CACHE) == 0) {
if (curproc && curproc->p_stats) /* count block I/O */
if (curproc != NULL)
curproc->p_stats->p_ru.ru_inblock++;
bp->b_flags |= B_READ;
bp->b_flags &= ~(B_DONE | B_ERROR | B_INVAL);
@ -221,7 +221,7 @@ breadn(struct vnode * vp, daddr_t blkno, int size,
rabp = getblk(vp, *rablkno, *rabsize, 0, 0);
if ((rabp->b_flags & B_CACHE) == 0) {
if (curproc && curproc->p_stats)
if (curproc != NULL)
curproc->p_stats->p_ru.ru_inblock++;
rabp->b_flags |= B_READ | B_ASYNC;
rabp->b_flags &= ~(B_DONE | B_ERROR | B_INVAL);
@ -268,7 +268,8 @@ bwrite(struct buf * bp)
bp->b_vp->v_numoutput++;
vfs_busy_pages(bp, 1);
curproc->p_stats->p_ru.ru_oublock++;
if (curproc != NULL)
curproc->p_stats->p_ru.ru_oublock++;
VOP_STRATEGY(bp);
if ((oldflags & B_ASYNC) == 0) {