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| author | Jonathan Lemon <jlemon@FreeBSD.org> | 2000-07-18 21:41:47 +0000 |
|---|---|---|
| committer | Jonathan Lemon <jlemon@FreeBSD.org> | 2000-07-18 21:41:47 +0000 |
| commit | 2ba03123c5de8ca8cd86a2603503a3af6d4bb12f (patch) | |
| tree | dca10ff4071ab47ab23d025a7e3699678593d62e /sys/kern/kern_event.c | |
| parent | d98c7b9a99af829b67d202a74d3c70d6e6b06517 (diff) | |
| download | src-2ba03123c5de8ca8cd86a2603503a3af6d4bb12f.tar.gz src-2ba03123c5de8ca8cd86a2603503a3af6d4bb12f.zip | |
Fix a bug which would cause some knotes to get lost when two kqueues
were being used in a process at the same time.
Test case provided by: Chris Peiffer <peifferc@CS.Stanford.EDU>
Notes
Notes:
svn path=/head/; revision=63470
Diffstat (limited to 'sys/kern/kern_event.c')
| -rw-r--r-- | sys/kern/kern_event.c | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/sys/kern/kern_event.c b/sys/kern/kern_event.c index 724b568456a4..2f1a390f0de7 100644 --- a/sys/kern/kern_event.c +++ b/sys/kern/kern_event.c @@ -311,7 +311,8 @@ kqueue(struct proc *p, struct kqueue_args *uap) TAILQ_INIT(&kq->kq_head); fp->f_data = (caddr_t)kq; p->p_retval[0] = fd; - fdp->fd_knlistsize = 0; /* mark this fdesc as having a kq */ + if (fdp->fd_knlistsize < 0) + fdp->fd_knlistsize = 0; /* this process has a kq */ kq->kq_fdp = fdp; return (error); } |