diff options
| -rw-r--r-- | kernel/sysproc.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/kernel/sysproc.c b/kernel/sysproc.c index 1de184e..3b4d5bd 100644 --- a/kernel/sysproc.c +++ b/kernel/sysproc.c @@ -55,6 +55,8 @@ sys_sleep(void) uint ticks0; argint(0, &n); + if(n < 0) + n = 0; acquire(&tickslock); ticks0 = ticks; while(ticks - ticks0 < n){ |