diff options
| author | alc <alc@FreeBSD.org> | 2003-04-04 06:14:54 +0000 |
|---|---|---|
| committer | alc <alc@FreeBSD.org> | 2003-04-04 06:14:54 +0000 |
| commit | cbd6318ffdb340e5a49bcbcb93e97b292a5924ff (patch) | |
| tree | 5f59c51fc62c1621043f93a95b00155d45ab9256 | |
| parent | b72dee7e432894a54443ddfc0ebdb74e44b73a21 (diff) | |
| download | FreeBSD-src-cbd6318ffdb340e5a49bcbcb93e97b292a5924ff.zip FreeBSD-src-cbd6318ffdb340e5a49bcbcb93e97b292a5924ff.tar.gz | |
o Check the b_bufsize passed to vmapbuf() returning an error
if it is invalid.
o Remove a debugging printf() from vmapbuf().
Suggested by: tegge
| -rw-r--r-- | sys/kern/vfs_bio.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/sys/kern/vfs_bio.c b/sys/kern/vfs_bio.c index 489512c..f5d803a 100644 --- a/sys/kern/vfs_bio.c +++ b/sys/kern/vfs_bio.c @@ -3618,7 +3618,8 @@ vmapbuf(struct buf *bp) if ((bp->b_flags & B_PHYS) == 0) panic("vmapbuf"); - + if (bp->b_bufsize < 0) + return (-1); for (addr = (caddr_t)trunc_page((vm_offset_t)bp->b_data), pidx = 0; addr < bp->b_data + bp->b_bufsize; addr += PAGE_SIZE, pidx++) { @@ -3635,7 +3636,6 @@ retry: (bp->b_iocmd == BIO_READ) ? (VM_PROT_READ|VM_PROT_WRITE) : VM_PROT_READ); if (i < 0) { - printf("vmapbuf: warning, bad user address during I/O\n"); vm_page_lock_queues(); for (i = 0; i < pidx; ++i) { vm_page_unhold(bp->b_pages[i]); |
