On 22.10.21 17:10, syzbot wrote: > syzbot has found a reproducer for the following issue on: > > HEAD commit: 2f111a6fd5b5 Merge tag 'ceph-for-5.15-rc7' of git://github.. > git tree: upstream > console output: https://syzkaller.appspot.com/x/log.txt?x=15a3aaf0b00000 > kernel config: https://syzkaller.appspot.com/x/.config?x=61f4d9af07d3bbdf > dashboard link: https://syzkaller.appspot.com/bug?extid=fd9d03311cdce9a9ec36 > compiler: gcc (Debian 10.2.1-6) 10.2.1 20210110, GNU ld (GNU Binutils for Debian) 2.35.2 > syz repro: https://syzkaller.appspot.com/x/repro.syz?x=13d4e9fcb00000 > C reproducer: https://syzkaller.appspot.com/x/repro.c?x=1444ada4b00000 #syz test https://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb.git 2f111a6fd5b5
diff --git a/drivers/usb/misc/sisusbvga/sisusb.c b/drivers/usb/misc/sisusbvga/sisusb.c index f08de33d9ff3..de30fb85ceda 100644 --- a/drivers/usb/misc/sisusbvga/sisusb.c +++ b/drivers/usb/misc/sisusbvga/sisusb.c @@ -251,7 +251,8 @@ static int sisusb_bulkout_msg(struct sisusb_usb_data *sisusb, int index, retval = urb->status; byteswritten = urb->actual_length; } - } + } else if (timeout == 0) + printk(KERN_ERR"Message without timeout\n"); if (actual_length) *actual_length = byteswritten;
