Quoting syzbot (2019-10-30 05:52:08) > Hello, > > syzbot found the following crash on: > > HEAD commit: ff6409a6 usb-fuzzer: main usb gadget fuzzer driver > git tree: https://github.com/google/kasan.git usb-fuzzer > console output: https://syzkaller.appspot.com/x/log.txt?x=15e1ba24e00000 > kernel config: https://syzkaller.appspot.com/x/.config?x=3230c37d442895b7 > dashboard link: https://syzkaller.appspot.com/bug?extid=6d8505fcdf25f00ac276 > compiler: gcc (GCC) 9.0.0 20181231 (experimental) > syz repro: https://syzkaller.appspot.com/x/repro.syz?x=169b8904e00000 > C reproducer: https://syzkaller.appspot.com/x/repro.c?x=166f3104e00000 > > IMPORTANT: if you fix the bug, please add the following tag to the commit: > Reported-by: syzbot+6d8505fcdf25f00ac276@xxxxxxxxxxxxxxxxxxxxxxxxx > Ok, let's try that again #syz test: https://github.com/google/kasan.git ff6409a6 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);
