diff options
| author | jhb <jhb@FreeBSD.org> | 2001-03-07 02:25:13 +0000 |
|---|---|---|
| committer | jhb <jhb@FreeBSD.org> | 2001-03-07 02:25:13 +0000 |
| commit | c7d1d654990520c728b49d9c95d05d3f5b807839 (patch) | |
| tree | 943ee310de5a6980a5a2bc592e035b5adaf95fd2 /sys/kern/vfs_syscalls.c | |
| parent | fc1cdb0ea4595a57bb61542f9cd485e395f645d2 (diff) | |
| download | FreeBSD-src-c7d1d654990520c728b49d9c95d05d3f5b807839.zip FreeBSD-src-c7d1d654990520c728b49d9c95d05d3f5b807839.tar.gz | |
Check to see if p_fd is NULL before derferencing it in checkdirs(). It's
possible for us to see a process in the early stages of fork before p_fd
has been initialized. Ideally, we wouldn't stick a process on the allproc
list until it was fully created however.
Diffstat (limited to 'sys/kern/vfs_syscalls.c')
| -rw-r--r-- | sys/kern/vfs_syscalls.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/sys/kern/vfs_syscalls.c b/sys/kern/vfs_syscalls.c index 1670d4e..a6c9887 100644 --- a/sys/kern/vfs_syscalls.c +++ b/sys/kern/vfs_syscalls.c @@ -418,6 +418,8 @@ checkdirs(olddp, newdp) ALLPROC_LOCK(AP_SHARED); LIST_FOREACH(p, &allproc, p_list) { fdp = p->p_fd; + if (fdp == NULL) + continue; if (fdp->fd_cdir == olddp) { vrele(fdp->fd_cdir); VREF(newdp); |
