Quoting syzbot (2019-11-06 04:32:09) > Hello, > > syzbot found the following crash on: > > HEAD commit: b1aa9d83 usb: raw: add raw-gadget interface > git tree: https://github.com/google/kasan.git usb-fuzzer > console output: https://syzkaller.appspot.com/x/log.txt?x=16ae2adce00000 > kernel config: https://syzkaller.appspot.com/x/.config?x=79de80330003b5f7 > dashboard link: https://syzkaller.appspot.com/bug?extid=f41c4f7c6d8b0b778780 > compiler: gcc (GCC) 9.0.0 20181231 (experimental) > syz repro: https://syzkaller.appspot.com/x/repro.syz?x=10248158e00000 > C reproducer: https://syzkaller.appspot.com/x/repro.c?x=16afbf7ce00000 > > IMPORTANT: if you fix the bug, please add the following tag to the commit: > Reported-by: syzbot+f41c4f7c6d8b0b778780@xxxxxxxxxxxxxxxxxxxxxxxxx > There are two reports. Let's test this one too. #syz test: https://github.com/google/kasan.git b1aa9d83 diff --git a/drivers/char/random.c b/drivers/char/random.c index 5b799aa973a3..c487709499fc 100644 --- a/drivers/char/random.c +++ b/drivers/char/random.c @@ -2440,8 +2440,8 @@ void add_hwgenerator_randomness(const char *buffer, size_t count, * We'll be woken up again once below random_write_wakeup_thresh, * or when the calling thread is about to terminate. */ - wait_event_freezable(random_write_wait, - kthread_should_stop() || + wait_event_interruptible(random_write_wait, + kthread_should_stop() || freezing(current) || ENTROPY_BITS(&input_pool) <= random_write_wakeup_bits); mix_pool_bytes(poolp, buffer, count); credit_entropy_bits(poolp, entropy);
