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-rw-r--r--kernel/console.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/kernel/console.c b/kernel/console.c
index 23a2d35..b8fa1de 100644
--- a/kernel/console.c
+++ b/kernel/console.c
@@ -89,7 +89,7 @@ consoleread(int user_dst, uint64 dst, int n)
// wait until interrupt handler has put some
// input into cons.buffer.
while(cons.r == cons.w){
- if(myproc()->killed){
+ if(__sync_add_and_fetch(&(myproc()->killed), 0)){
release(&cons.lock);
return -1;
}