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| author | peter <peter@FreeBSD.org> | 2000-02-14 06:09:01 +0000 |
|---|---|---|
| committer | peter <peter@FreeBSD.org> | 2000-02-14 06:09:01 +0000 |
| commit | 89739dfdaa94296468383ea05fac006c6aa306c4 (patch) | |
| tree | b9f6a88b977e0e45d55e504174d6d823bdc6fa66 /sys/kern/vfs_cache.c | |
| parent | 1caf5347c9e5b9317bbb540d9be7db97d83db354 (diff) | |
| download | FreeBSD-src-89739dfdaa94296468383ea05fac006c6aa306c4.zip FreeBSD-src-89739dfdaa94296468383ea05fac006c6aa306c4.tar.gz | |
Avoid a panic in __getcwd(2) when combined with umount -f.
Diffstat (limited to 'sys/kern/vfs_cache.c')
| -rw-r--r-- | sys/kern/vfs_cache.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/sys/kern/vfs_cache.c b/sys/kern/vfs_cache.c index 860db8d..33462b1 100644 --- a/sys/kern/vfs_cache.c +++ b/sys/kern/vfs_cache.c @@ -535,6 +535,8 @@ __getcwd(p, uap) slash_prefixed = 0; for (vp = fdp->fd_cdir; vp != fdp->fd_rdir && vp != rootvnode;) { if (vp->v_flag & VROOT) { + if (vp->v_mount == NULL) /* forced unmount */ + return (EBADF); vp = vp->v_mount->mnt_vnodecovered; continue; } |
