diff options
| author | alc <alc@FreeBSD.org> | 2003-12-21 06:03:40 +0000 |
|---|---|---|
| committer | alc <alc@FreeBSD.org> | 2003-12-21 06:03:40 +0000 |
| commit | a0a304d068b4e9f755b5738288170551934406e9 (patch) | |
| tree | cb430a7ec89446b57c79be52561f82d667eaee0f /sys/vm | |
| parent | 01301e761d4bfbbff04c75e6e5b447e3d65c5f90 (diff) | |
| download | FreeBSD-src-a0a304d068b4e9f755b5738288170551934406e9.zip FreeBSD-src-a0a304d068b4e9f755b5738288170551934406e9.tar.gz | |
- Correct an error in mincore(2) that has existed since its introduction:
mincore(2) should check that the page is valid, not just allocated.
Otherwise, it can return a false positive for a page that is not yet
resident because it is being read from disk.
Diffstat (limited to 'sys/vm')
| -rw-r--r-- | sys/vm/vm_mmap.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/sys/vm/vm_mmap.c b/sys/vm/vm_mmap.c index b46a663..ab876a5 100644 --- a/sys/vm/vm_mmap.c +++ b/sys/vm/vm_mmap.c @@ -875,7 +875,7 @@ RestartScan: * if the page is resident, then gather information about * it. */ - if (m) { + if (m != NULL && m->valid != 0) { mincoreinfo = MINCORE_INCORE; vm_page_lock_queues(); if (m->dirty || |
