Re: divide error in cdc_ncm_update_rxtx_max

syzbot [off-list ref] writes:

syzbot has tested the proposed patch but the reproducer still
triggered crash:
divide error in usbnet_update_max_qlen

cdc_ncm 5-1:1.0: setting tx_max = 16384
divide error: 0000 [#1] SMP KASAN
CPU: 1 PID: 1737 Comm: kworker/1:2 Not tainted 5.3.0-rc7+ #0
Hardware name: Google Google Compute Engine/Google Compute Engine,
BIOS Google 01/01/2011
Workqueue: usb_hub_wq hub_event
RIP: 0010:usbnet_update_max_qlen drivers/net/usb/usbnet.c:344 [inline]
RIP: 0010:usbnet_update_max_qlen+0x231/0x370 drivers/net/usb/usbnet.c:338

Sure, but that's another error already fixed by Oliver..

I guess this fix worked.  But I believe we should see if this is a more
generic issue than just this single driver/bug.  I fear it is...



Bjørn